diff --git a/.idea/.gitignore b/.idea/.gitignore
index 24adb447b4e5cccaf2a84e78dc853350a76020f4..c1de4eaf8fa713678b7b02139c00a4b156661c27 100644
--- a/.idea/.gitignore
+++ b/.idea/.gitignore
@@ -1,8 +1,8 @@
-# Default ignored files
-/shelf/
-/workspace.xml
-# Datasource local storage ignored files
-/../../../../../../:\Users\김영우\PycharmProjects\Database\.idea/dataSources/
-/dataSources.local.xml
-# Editor-based HTTP Client requests
-/httpRequests/
+# Default ignored files
+/shelf/
+/workspace.xml
+# Datasource local storage ignored files
+/../../../../../../:\Users\김영우\PycharmProjects\Database\.idea/dataSources/
+/dataSources.local.xml
+# Editor-based HTTP Client requests
+/httpRequests/
diff --git a/.idea/Database.iml b/.idea/Database.iml
index 7d65dd1f26de1b5c2329f3b385e49f3e0e9a1c5d..9827b1ea69c083dcbc8e4dec05440ce1c41f9b4c 100644
--- a/.idea/Database.iml
+++ b/.idea/Database.iml
@@ -1,21 +1,21 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<module type="PYTHON_MODULE" version="4">
-  <component name="Flask">
-    <option name="enabled" value="true" />
-  </component>
-  <component name="NewModuleRootManager">
-    <content url="file://$MODULE_DIR$">
-      <excludeFolder url="file://$MODULE_DIR$/venv" />
-    </content>
-    <orderEntry type="inheritedJdk" />
-    <orderEntry type="sourceFolder" forTests="false" />
-  </component>
-  <component name="TemplatesService">
-    <option name="TEMPLATE_CONFIGURATION" value="Jinja2" />
-    <option name="TEMPLATE_FOLDERS">
-      <list>
-        <option value="$MODULE_DIR$/../Database\templates" />
-      </list>
-    </option>
-  </component>
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="PYTHON_MODULE" version="4">
+  <component name="Flask">
+    <option name="enabled" value="true" />
+  </component>
+  <component name="NewModuleRootManager">
+    <content url="file://$MODULE_DIR$">
+      <excludeFolder url="file://$MODULE_DIR$/venv" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+  <component name="TemplatesService">
+    <option name="TEMPLATE_CONFIGURATION" value="Jinja2" />
+    <option name="TEMPLATE_FOLDERS">
+      <list>
+        <option value="$MODULE_DIR$/../Database\templates" />
+      </list>
+    </option>
+  </component>
 </module>
\ No newline at end of file
diff --git a/.idea/misc.xml b/.idea/misc.xml
index eddbb65eb56a02cb67b35228e3c49c82fb610a63..af3f205fcd1ca125764eeacfec1ab9faeab3dd69 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.9 (Database) (2)" project-jdk-type="Python SDK" />
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.9 (Database) (2)" project-jdk-type="Python SDK" />
 </project>
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
index f333a0b16fdbeb12a4b80bcb4328b425118f970e..ef2e57a39fc3f96aa0f6e733ffe34efe12301fe7 100644
--- a/.idea/modules.xml
+++ b/.idea/modules.xml
@@ -1,8 +1,8 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ProjectModuleManager">
-    <modules>
-      <module fileurl="file://$PROJECT_DIR$/.idea/Database.iml" filepath="$PROJECT_DIR$/.idea/Database.iml" />
-    </modules>
-  </component>
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/Database.iml" filepath="$PROJECT_DIR$/.idea/Database.iml" />
+    </modules>
+  </component>
 </project>
\ No newline at end of file
diff --git a/app.py b/app.py
index 6159d666e5d5cee7c2e36f59083cf71b28c44662..8e01341d8bea4c348e4152099ad8e3f1ee209577 100644
--- a/app.py
+++ b/app.py
@@ -1,280 +1,280 @@
-from flask import Flask, render_template, request, redirect, url_for
-from flask_mysqldb import MySQL
-import yaml
-
-app = Flask(__name__)
-
-db = yaml.load(open('db.yaml'))
-app.config['MYSQL_HOST'] = db['mysql_host']
-app.config['MYSQL_USER'] = db['mysql_user']
-app.config['MYSQL_PASSWORD'] = db['mysql_password']
-app.config['MYSQL_DB'] = db['mysql_db']
-
-mysql = MySQL(app)
-
-
-@app.route('/main', methods=['GET', 'POST'])
-def main():
-    if request.method == 'POST':
-        if request.form['button'] == 'Sign in':
-            return redirect('http://127.0.0.1:5000/signin')
-
-        if request.form['button'] == 'Check Profile':
-            pf = request.form
-            id = pf['AccountID']
-            password = pf['Password']
-
-            return redirect(url_for('profile', id=id, password=password))
-
-        if request.form['button'] == 'Search':
-            return redirect('http://127.0.0.1:5000/search')
-
-        if request.form['button'] == 'Recommend Movie':
-            return redirect('http://127.0.0.1:5000/recommend')
-
-        if request.form['button'] == 'Bye Bye':
-            return redirect('https://www.google.com')
-
-    return render_template('main.html')
-
-
-@app.route('/profile/<id>/<password>', methods=['GET', 'POST'])
-def profile(id, password):
-    name = id
-    pas = password;
-
-    cur = mysql.connection.cursor()
-    resultVal = cur.execute("SELECT * FROM customer WHERE AccountID = %s AND Password = %s", [name, pas])
-    if resultVal > 0:
-        customerDetails = cur.fetchall()
-        return render_template('Profile.html', customerDetails=customerDetails)
-
-
-@app.route('/search', methods=['GET', 'POST'])
-def search():
-    if request.method == 'POST':
-        if request.form['button'] == 'Search Held Movie':
-            userdetails = request.form
-
-            accountid = userdetails['Current']
-            return redirect(url_for('resultchm', val=accountid))
-
-        if request.form['button'] == 'Search Movie Queue':
-            userdetails = request.form
-
-            accountid = userdetails['Queue']
-            return redirect(url_for('resultsmq', val=accountid))
-
-        if request.form['button'] == 'Search Movie Type':
-            userdetails = request.form
-
-            movietype = userdetails['MovieType']
-            return redirect(url_for('resultsmt', val=movietype))
-
-        if request.form['button'] == 'Search Keyword':
-            userdetails = request.form
-
-            movietype = "%" + userdetails['Keyword'] + "%"
-            return redirect(url_for('resultsk', val=movietype))
-
-        if request.form['button'] == 'Search Actor':
-            userdetails = request.form
-
-            factor = userdetails['FActor']
-            lactor = userdetails['LActor']
-
-            return redirect(url_for('resultsa', val1=factor, val2=lactor))
-
-        if request.form['button'] == 'Go Back':
-            return redirect('http://127.0.0.1:5000/main')
-
-    return render_template('search.html')
-
-
-@app.route('/resultchm/<val>', methods=['GET', 'POST'])
-def resultchm(val):
-    if request.method == 'POST':
-        if request.form['button'] == 'Main Page':
-            return redirect('http://127.0.0.1:5000/main')
-
-    accountid = val;
-
-    cur = mysql.connection.cursor()
-    resultVal = cur.execute("SELECT DISTINCT b.MovieID, MovieName, Account FROM customer, borrow as b, Movie as m WHERE b.MovieID = m.MovieID AND Account = %s", [accountid])
-
-    if resultVal > 0:
-        details = cur.fetchall()
-        print(details)
-        return render_template('resultchm.html', details=details)
-
-
-@app.route('/resultsmq/<val>', methods=['GET', 'POST'])
-def resultsmq(val):
-    if request.method == 'POST':
-        if request.form['button'] == 'Main Page':
-            return redirect('http://127.0.0.1:5000/main')
-
-    accountid = val;
-
-    cur = mysql.connection.cursor()
-    resultVal = cur.execute("SELECT DISTINCT MovieQueue, FirstName, LastName, AccountID FROM customer WHERE MovieQueue >= 1 AND AccountID = %s", [accountid])
-
-    if resultVal > 0:
-        details = cur.fetchall()
-        return render_template('resultsmq.html', details=details)
-
-
-@app.route('/resultsmt/<val>', methods=['GET', 'POST'])
-def resultsmt(val):
-    if request.method == 'POST':
-        if request.form['button'] == 'Main Page':
-            return redirect('http://127.0.0.1:5000/main')
-
-    movietype = val;
-
-    cur = mysql.connection.cursor()
-    resultVal = cur.execute("SELECT MovieID, MovieName, MovieType FROM Movie WHERE MovieType = %s", [movietype])
-
-    if resultVal > 0:
-        details = cur.fetchall()
-        return render_template('resultsmt.html', details=details)
-
-
-@app.route('/resultsk/<val>', methods=['GET', 'POST'])
-def resultsk(val):
-    if request.method == 'POST':
-        if request.form['button'] == 'Main Page':
-            return redirect('http://127.0.0.1:5000/main')
-
-    keyword = val;
-
-    cur = mysql.connection.cursor()
-    resultVal = cur.execute("SELECT MovieID, MovieName FROM movie WHERE MovieName LIKE %s", [keyword])
-
-    if resultVal > 0:
-        details = cur.fetchall()
-        return render_template('resultsk.html', details=details)
-
-
-@app.route('/resultsa/<val1>/<val2>', methods=['GET', 'POST'])
-def resultsa(val1, val2):
-    if request.method == 'POST':
-        if request.form['button'] == 'Main Page':
-            return redirect('http://127.0.0.1:5000/main')
-
-    firstname = val1;
-    lastname = val2;
-
-    cur = mysql.connection.cursor()
-    resultVal = cur.execute("SELECT DISTINCT m.MovieID, m.MovieName, a.ActorID, a.FirstName, a.LastName FROM movie AS m, actor AS a WHERE m.ActorID = a.ActorID AND a.FirstName = %s AND a.LastName = %s", [firstname, lastname])
-
-    if resultVal > 0:
-        details = cur.fetchall()
-        return render_template('resultsa.html', details=details)
-
-
-@app.route('/recommend', methods=['GET', 'POST'])
-def recommend():
-    if request.method == 'POST':
-        if request.form['button'] == 'Im Feeling Lucky':
-            userdetails = request.form
-
-            accountid = userdetails['AccountID']
-            return redirect(url_for('resultlucky', val=accountid))
-
-        if request.form['button'] == 'Give Rating':
-            userdetails = request.form
-
-            accountid = userdetails['AccountID']
-            movieid = userdetails['MovieID']
-            rating = userdetails['rating']
-
-            print(rating)
-
-            return redirect(url_for('resultrating', val1=accountid, val2=movieid, val3=rating))
-
-        if request.form['button'] == 'Go Back':
-            return redirect('http://127.0.0.1:5000/main')
-
-    cur = mysql.connection.cursor()
-    resultVal = cur.execute("SELECT MAX(NumberofCopies), MovieName FROM movie")
-
-    if resultVal > 0:
-        details = cur.fetchall()
-        return render_template('recommend.html', details=details)
-
-
-@app.route('/resultlucky/<val>', methods=['GET', 'POST'])
-def resultlucky(val):
-    if request.method == 'POST':
-        if request.form['button'] == 'Main Page':
-            return redirect('http://127.0.0.1:5000/main')
-
-    accountid = val;
-
-    cur = mysql.connection.cursor()
-    resultVal = cur.execute("SELECT DISTINCT c.FirstName, c.LastName, m.MovieName, m.MovieType FROM customer AS c, borrow AS b, movie AS m WHERE b.MovieID <> m.MovieID AND c.AccountID = b.Account AND b.bMovieType = m.MovieType AND c.AccountID = %s", [accountid])
-
-    if resultVal > 0:
-        details = cur.fetchall()
-        return render_template('resultlucky.html', details=details)
-
-
-@app.route('/resultrating/<val1>/<val2>/<val3>', methods=['GET', 'POST'])
-def resultrating(val1, val2, val3):
-    if request.method == 'POST':
-        if request.form['button'] == 'Main Page':
-            return redirect('http://127.0.0.1:5000/main')
-
-    accountid = val1;
-    movieid = val2;
-    rating = val3;
-
-    cur = mysql.connection.cursor()
-    cur.execute("UPDATE borrow SET Rating = %s WHERE Account = %s AND MovieID = %s", [rating, accountid, movieid])
-    mysql.connection.commit()
-
-    resultVal = cur.execute("SELECT * FROM borrow WHERE Account = %s", [accountid])
-
-    if resultVal > 0:
-        details = cur.fetchall()
-        return render_template('resultrating.html', details=details)
-
-
-@app.route('/signin', methods=['GET', 'POST'])
-def sign():
-    if request.method == 'POST':
-        if request.form['button'] == 'Submit':
-            userdetails = request.form
-
-            firstname = userdetails['FirstName']
-            lastname = userdetails['LastName']
-            accountid = userdetails['AccountID']
-            password = userdetails['Password']
-            streetaddress = userdetails['StreetAddress']
-            city_province = userdetails['City_Province']
-            zipcode = userdetails['ZipCode']
-            country = userdetails['Country']
-            email = userdetails['Email']
-            phonenumber = userdetails['PhoneNumber']
-
-            cur = mysql.connection.cursor()
-            cur.execute("INSERT INTO customer(FirstName, LastName, AccountID, Password, StreetAddress, City_Province, ZipCode, Country, Email, PhoneNumber) VALUES(%s, %s, %s, %s, %s, %s, %s, %s, %s, %s)", (firstname, lastname, accountid, password, streetaddress, city_province, zipcode, country, email, phonenumber))
-            mysql.connection.commit()
-            cur.close()
-            return redirect('http://127.0.0.1:5000/main')
-
-        elif request.form['button'] == 'Cancel':
-            return redirect('http://127.0.0.1:5000/main')
-
-    return render_template('signin.html')
-
-
-@app.route('/add', methods=['GET', 'POST'])
-def add():
-
-    return render_template('add.html')
-
-
-if __name__ == '__main__':
-    app.run(debug=True)
+from flask import Flask, render_template, request, redirect, url_for
+from flask_mysqldb import MySQL
+import yaml
+
+app = Flask(__name__)
+
+db = yaml.load(open('db.yaml'))
+app.config['MYSQL_HOST'] = db['mysql_host']
+app.config['MYSQL_USER'] = db['mysql_user']
+app.config['MYSQL_PASSWORD'] = db['mysql_password']
+app.config['MYSQL_DB'] = db['mysql_db']
+
+mysql = MySQL(app)
+
+
+@app.route('/main', methods=['GET', 'POST'])
+def main():
+    if request.method == 'POST':
+        if request.form['button'] == 'Sign in':
+            return redirect('http://127.0.0.1:5000/signin')
+
+        if request.form['button'] == 'Check Profile':
+            pf = request.form
+            id = pf['AccountID']
+            password = pf['Password']
+
+            return redirect(url_for('profile', id=id, password=password))
+
+        if request.form['button'] == 'Search':
+            return redirect('http://127.0.0.1:5000/search')
+
+        if request.form['button'] == 'Recommend Movie':
+            return redirect('http://127.0.0.1:5000/recommend')
+
+        if request.form['button'] == 'Bye Bye':
+            return redirect('https://www.google.com')
+
+    return render_template('main.html')
+
+
+@app.route('/profile/<id>/<password>', methods=['GET', 'POST'])
+def profile(id, password):
+    name = id
+    pas = password;
+
+    cur = mysql.connection.cursor()
+    resultVal = cur.execute("SELECT * FROM customer WHERE AccountID = %s AND Password = %s", [name, pas])
+    if resultVal > 0:
+        customerDetails = cur.fetchall()
+        return render_template('Profile.html', customerDetails=customerDetails)
+
+
+@app.route('/search', methods=['GET', 'POST'])
+def search():
+    if request.method == 'POST':
+        if request.form['button'] == 'Search Held Movie':
+            userdetails = request.form
+
+            accountid = userdetails['Current']
+            return redirect(url_for('resultchm', val=accountid))
+
+        if request.form['button'] == 'Search Movie Queue':
+            userdetails = request.form
+
+            accountid = userdetails['Queue']
+            return redirect(url_for('resultsmq', val=accountid))
+
+        if request.form['button'] == 'Search Movie Type':
+            userdetails = request.form
+
+            movietype = userdetails['MovieType']
+            return redirect(url_for('resultsmt', val=movietype))
+
+        if request.form['button'] == 'Search Keyword':
+            userdetails = request.form
+
+            movietype = "%" + userdetails['Keyword'] + "%"
+            return redirect(url_for('resultsk', val=movietype))
+
+        if request.form['button'] == 'Search Actor':
+            userdetails = request.form
+
+            factor = userdetails['FActor']
+            lactor = userdetails['LActor']
+
+            return redirect(url_for('resultsa', val1=factor, val2=lactor))
+
+        if request.form['button'] == 'Go Back':
+            return redirect('http://127.0.0.1:5000/main')
+
+    return render_template('search.html')
+
+
+@app.route('/resultchm/<val>', methods=['GET', 'POST'])
+def resultchm(val):
+    if request.method == 'POST':
+        if request.form['button'] == 'Main Page':
+            return redirect('http://127.0.0.1:5000/main')
+
+    accountid = val;
+
+    cur = mysql.connection.cursor()
+    resultVal = cur.execute("SELECT DISTINCT b.MovieID, MovieName, Account FROM customer, borrow as b, Movie as m WHERE b.MovieID = m.MovieID AND Account = %s", [accountid])
+
+    if resultVal > 0:
+        details = cur.fetchall()
+        print(details)
+        return render_template('resultchm.html', details=details)
+
+
+@app.route('/resultsmq/<val>', methods=['GET', 'POST'])
+def resultsmq(val):
+    if request.method == 'POST':
+        if request.form['button'] == 'Main Page':
+            return redirect('http://127.0.0.1:5000/main')
+
+    accountid = val;
+
+    cur = mysql.connection.cursor()
+    resultVal = cur.execute("SELECT DISTINCT MovieQueue, FirstName, LastName, AccountID FROM customer WHERE MovieQueue >= 1 AND AccountID = %s", [accountid])
+
+    if resultVal > 0:
+        details = cur.fetchall()
+        return render_template('resultsmq.html', details=details)
+
+
+@app.route('/resultsmt/<val>', methods=['GET', 'POST'])
+def resultsmt(val):
+    if request.method == 'POST':
+        if request.form['button'] == 'Main Page':
+            return redirect('http://127.0.0.1:5000/main')
+
+    movietype = val;
+
+    cur = mysql.connection.cursor()
+    resultVal = cur.execute("SELECT MovieID, MovieName, MovieType FROM Movie WHERE MovieType = %s", [movietype])
+
+    if resultVal > 0:
+        details = cur.fetchall()
+        return render_template('resultsmt.html', details=details)
+
+
+@app.route('/resultsk/<val>', methods=['GET', 'POST'])
+def resultsk(val):
+    if request.method == 'POST':
+        if request.form['button'] == 'Main Page':
+            return redirect('http://127.0.0.1:5000/main')
+
+    keyword = val;
+
+    cur = mysql.connection.cursor()
+    resultVal = cur.execute("SELECT MovieID, MovieName FROM movie WHERE MovieName LIKE %s", [keyword])
+
+    if resultVal > 0:
+        details = cur.fetchall()
+        return render_template('resultsk.html', details=details)
+
+
+@app.route('/resultsa/<val1>/<val2>', methods=['GET', 'POST'])
+def resultsa(val1, val2):
+    if request.method == 'POST':
+        if request.form['button'] == 'Main Page':
+            return redirect('http://127.0.0.1:5000/main')
+
+    firstname = val1;
+    lastname = val2;
+
+    cur = mysql.connection.cursor()
+    resultVal = cur.execute("SELECT DISTINCT m.MovieID, m.MovieName, a.ActorID, a.FirstName, a.LastName FROM movie AS m, actor AS a WHERE m.ActorID = a.ActorID AND a.FirstName = %s AND a.LastName = %s", [firstname, lastname])
+
+    if resultVal > 0:
+        details = cur.fetchall()
+        return render_template('resultsa.html', details=details)
+
+
+@app.route('/recommend', methods=['GET', 'POST'])
+def recommend():
+    if request.method == 'POST':
+        if request.form['button'] == 'Im Feeling Lucky':
+            userdetails = request.form
+
+            accountid = userdetails['AccountID']
+            return redirect(url_for('resultlucky', val=accountid))
+
+        if request.form['button'] == 'Give Rating':
+            userdetails = request.form
+
+            accountid = userdetails['AccountID']
+            movieid = userdetails['MovieID']
+            rating = userdetails['rating']
+
+            print(rating)
+
+            return redirect(url_for('resultrating', val1=accountid, val2=movieid, val3=rating))
+
+        if request.form['button'] == 'Go Back':
+            return redirect('http://127.0.0.1:5000/main')
+
+    cur = mysql.connection.cursor()
+    resultVal = cur.execute("SELECT MAX(NumberofCopies), MovieName FROM movie")
+
+    if resultVal > 0:
+        details = cur.fetchall()
+        return render_template('recommend.html', details=details)
+
+
+@app.route('/resultlucky/<val>', methods=['GET', 'POST'])
+def resultlucky(val):
+    if request.method == 'POST':
+        if request.form['button'] == 'Main Page':
+            return redirect('http://127.0.0.1:5000/main')
+
+    accountid = val;
+
+    cur = mysql.connection.cursor()
+    resultVal = cur.execute("SELECT DISTINCT c.FirstName, c.LastName, m.MovieName, m.MovieType FROM customer AS c, borrow AS b, movie AS m WHERE b.MovieID <> m.MovieID AND c.AccountID = b.Account AND b.bMovieType = m.MovieType AND c.AccountID = %s", [accountid])
+
+    if resultVal > 0:
+        details = cur.fetchall()
+        return render_template('resultlucky.html', details=details)
+
+
+@app.route('/resultrating/<val1>/<val2>/<val3>', methods=['GET', 'POST'])
+def resultrating(val1, val2, val3):
+    if request.method == 'POST':
+        if request.form['button'] == 'Main Page':
+            return redirect('http://127.0.0.1:5000/main')
+
+    accountid = val1;
+    movieid = val2;
+    rating = val3;
+
+    cur = mysql.connection.cursor()
+    cur.execute("UPDATE borrow SET Rating = %s WHERE Account = %s AND MovieID = %s", [rating, accountid, movieid])
+    mysql.connection.commit()
+
+    resultVal = cur.execute("SELECT * FROM borrow WHERE Account = %s", [accountid])
+
+    if resultVal > 0:
+        details = cur.fetchall()
+        return render_template('resultrating.html', details=details)
+
+
+@app.route('/signin', methods=['GET', 'POST'])
+def sign():
+    if request.method == 'POST':
+        if request.form['button'] == 'Submit':
+            userdetails = request.form
+
+            firstname = userdetails['FirstName']
+            lastname = userdetails['LastName']
+            accountid = userdetails['AccountID']
+            password = userdetails['Password']
+            streetaddress = userdetails['StreetAddress']
+            city_province = userdetails['City_Province']
+            zipcode = userdetails['ZipCode']
+            country = userdetails['Country']
+            email = userdetails['Email']
+            phonenumber = userdetails['PhoneNumber']
+
+            cur = mysql.connection.cursor()
+            cur.execute("INSERT INTO customer(FirstName, LastName, AccountID, Password, StreetAddress, City_Province, ZipCode, Country, Email, PhoneNumber) VALUES(%s, %s, %s, %s, %s, %s, %s, %s, %s, %s)", (firstname, lastname, accountid, password, streetaddress, city_province, zipcode, country, email, phonenumber))
+            mysql.connection.commit()
+            cur.close()
+            return redirect('http://127.0.0.1:5000/main')
+
+        elif request.form['button'] == 'Cancel':
+            return redirect('http://127.0.0.1:5000/main')
+
+    return render_template('signin.html')
+
+
+@app.route('/add', methods=['GET', 'POST'])
+def add():
+
+    return render_template('add.html')
+
+
+if __name__ == '__main__':
+    app.run(debug=True)
diff --git a/db.yaml b/db.yaml
index 75622a96f8e1834b2fc1af1c475429a4d7142f52..01cf70112f3635647745c65221327b867d795ca2 100644
--- a/db.yaml
+++ b/db.yaml
@@ -1,4 +1,4 @@
-mysql_host: 'localhost'
-mysql_user: 'root'
-mysql_password: '1990silver!'
+mysql_host: 'localhost'
+mysql_user: 'root'
+mysql_password: '1990silver!'
 mysql_db: 'watch_network'
\ No newline at end of file
diff --git a/templates/Profile.html b/templates/Profile.html
index d70fcd76c3c63fd190fd13e04888866fbf7cd2c2..d90d8def15c0c74bd3e4b594a10b466024b2e1ce 100644
--- a/templates/Profile.html
+++ b/templates/Profile.html
@@ -1,57 +1,57 @@
-<!DOCTYPE html>
-<html lang="en">
-<head>
-    <link rel="icon" href="http://bootstrapk.com/favicon.ico">
-    <link href="/static/css/bootstrap.min.css" rel="stylesheet">
-    <link href="/static/css/starter-template.css" rel="stylesheet">
-    <link href="/static/css/bootstrap-theme.css" rel="stylesheet">
-    <meta charset="UTF-8">
-    <title>Profile</title>
-</head>
-<body>
-<h1>Profile</h1>
-<h3>{% for customer in customerDetails %}
-Welcome! {{ customer[0], customer[1] }}
-{% endfor %}
-</h3>
-<table border = 3 class = "table table-striped">
-    {% for customer in customerDetails %}
-    <tr style = "font-weight: bold">
-        <td>FirstName</td>
-        <td>LastName</td>
-        <td>AccountID</td>
-        <td>Password</td>
-        <td>StreetAddress</td>
-        <td>City, Province</td>
-        <td>ZipCode</td>
-        <td>Country</td>
-        <td>Account Type</td>
-        <td>PayExpireDate</td>
-        <td>Credit Card</td>
-        <td>Email</td>
-        <td>Phone Number</td>
-        <td>Movie Queue</td>
-        <td>Watched Movie</td>
-    </tr>
-    <tr>
-        <td> {{ customer[0] }}</td>
-        <td> {{ customer[1] }}</td>
-        <td> {{ customer[2] }}</td>
-        <td> {{ customer[3] }}</td>
-        <td> {{ customer[4] }}</td>
-        <td> {{ customer[5] }}</td>
-        <td> {{ customer[6] }}</td>
-        <td> {{ customer[7] }}</td>
-        <td> {{ customer[8] }}</td>
-        <td> {{ customer[9] }}</td>
-        <td> {{ customer[10] }}</td>
-        <td> {{ customer[11] }}</td>
-        <td> {{ customer[12] }}</td>
-        <td> {{ customer[13] }}</td>
-        <td> {{ customer[14] }}</td>
-    </tr>
-    {% endfor %}
-</table>
-
-</body>
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <link rel="icon" href="http://bootstrapk.com/favicon.ico">
+    <link href="/static/css/bootstrap.min.css" rel="stylesheet">
+    <link href="/static/css/starter-template.css" rel="stylesheet">
+    <link href="/static/css/bootstrap-theme.css" rel="stylesheet">
+    <meta charset="UTF-8">
+    <title>Profile</title>
+</head>
+<body>
+<h1>Profile</h1>
+<h3>{% for customer in customerDetails %}
+Welcome! {{ customer[0], customer[1] }}
+{% endfor %}
+</h3>
+<table border = 3 class = "table table-striped">
+    {% for customer in customerDetails %}
+    <tr style = "font-weight: bold">
+        <td>FirstName</td>
+        <td>LastName</td>
+        <td>AccountID</td>
+        <td>Password</td>
+        <td>StreetAddress</td>
+        <td>City, Province</td>
+        <td>ZipCode</td>
+        <td>Country</td>
+        <td>Account Type</td>
+        <td>PayExpireDate</td>
+        <td>Credit Card</td>
+        <td>Email</td>
+        <td>Phone Number</td>
+        <td>Movie Queue</td>
+        <td>Watched Movie</td>
+    </tr>
+    <tr>
+        <td> {{ customer[0] }}</td>
+        <td> {{ customer[1] }}</td>
+        <td> {{ customer[2] }}</td>
+        <td> {{ customer[3] }}</td>
+        <td> {{ customer[4] }}</td>
+        <td> {{ customer[5] }}</td>
+        <td> {{ customer[6] }}</td>
+        <td> {{ customer[7] }}</td>
+        <td> {{ customer[8] }}</td>
+        <td> {{ customer[9] }}</td>
+        <td> {{ customer[10] }}</td>
+        <td> {{ customer[11] }}</td>
+        <td> {{ customer[12] }}</td>
+        <td> {{ customer[13] }}</td>
+        <td> {{ customer[14] }}</td>
+    </tr>
+    {% endfor %}
+</table>
+
+</body>
 </html>
\ No newline at end of file
diff --git a/templates/add.html b/templates/add.html
index 8f1e6eeb4bb802b2090d7bf9f4434d73ba22ca45..d9932dd7d43e4d84a852d6c557d8a65b3e13d8ae 100644
--- a/templates/add.html
+++ b/templates/add.html
@@ -1,20 +1,20 @@
-<!DOCTYPE html>
-<html lang="en">
-<head>
-    <meta charset="UTF-8">
-    <title>Title</title>
-</head>
-<body>
-<form method="POST" action="">
-    Name <input type = "text" name = "name"/>
-    <br>
-    Email <input type = "email" name = "email"/>
-    <br>
-    <input type = "submit">
-</form>
-
-<br>
-To see tbluser table
-<a href="main">Main</a>
-</body>
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <title>Title</title>
+</head>
+<body>
+<form method="POST" action="">
+    Name <input type = "text" name = "name"/>
+    <br>
+    Email <input type = "email" name = "email"/>
+    <br>
+    <input type = "submit">
+</form>
+
+<br>
+To see tbluser table
+<a href="main">Main</a>
+</body>
 </html>
\ No newline at end of file
diff --git a/templates/login.html b/templates/login.html
index 566549bdf8fae810809c1a81066000687cb338f6..932572119fffee02a5944a3766d7358e2c508791 100644
--- a/templates/login.html
+++ b/templates/login.html
@@ -1,10 +1,10 @@
-<!DOCTYPE html>
-<html lang="en">
-<head>
-    <meta charset="UTF-8">
-    <title>Title</title>
-</head>
-<body>
-
-</body>
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <title>Title</title>
+</head>
+<body>
+
+</body>
 </html>
\ No newline at end of file
diff --git a/templates/main.html b/templates/main.html
index 4c7014d797cb524522d7f7f174520f4063018a15..9f963d94916b3fe2fffab0e3098f5bf696081b5a 100644
--- a/templates/main.html
+++ b/templates/main.html
@@ -1,28 +1,28 @@
-<!DOCTYPE html>
-<html lang="en">
-<head>
-    <link rel="icon" href="http://bootstrapk.com/favicon.ico">
-    <link href="/static/css/bootstrap.min.css" rel="stylesheet">
-    <link href="/static/css/starter-template.css" rel="stylesheet">
-    <link href="/static/css/bootstrap-theme.css" rel="stylesheet">
-    <meta charset="UTF-8">
-    <title>Watch Network</title>
-</head>
-<body>
-<h1>Welcome To Watch Network</h1>
-<form method="POST" action="">
-    ID <input type = "text" name = "AccountID"/>
-    Password  <input type = "password" name = "Password"/>
-    <input type = "submit" class="btn btn-primary" name = "button" value = "Check Profile">
-      OR...
-    <input type = "submit" class="btn btn-info" name = "button" value = "Sign in">
-    <- 회원 가입
-    <br>
-    <br>
-    You can also do:
-    <input type = "submit" class="btn btn-primary" name = "button" value = "Search">
-    or <input type = "submit" class="btn btn-primary" name = "button" value = "Recommend Movie">
-    or <input type = "submit" class="btn btn-danger" name = "button" value = "Bye Bye">
-</form>
-</body>
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <link rel="icon" href="http://bootstrapk.com/favicon.ico">
+    <link href="/static/css/bootstrap.min.css" rel="stylesheet">
+    <link href="/static/css/starter-template.css" rel="stylesheet">
+    <link href="/static/css/bootstrap-theme.css" rel="stylesheet">
+    <meta charset="UTF-8">
+    <title>Watch Network</title>
+</head>
+<body>
+<h1>Welcome To Watch Network</h1>
+<form method="POST" action="">
+    ID <input type = "text" name = "AccountID"/>
+    Password  <input type = "password" name = "Password"/>
+    <input type = "submit" class="btn btn-primary" name = "button" value = "Check Profile">
+      OR...
+    <input type = "submit" class="btn btn-info" name = "button" value = "Sign in">
+    <- 회원 가입
+    <br>
+    <br>
+    You can also do:
+    <input type = "submit" class="btn btn-primary" name = "button" value = "Search">
+    or <input type = "submit" class="btn btn-primary" name = "button" value = "Recommend Movie">
+    or <input type = "submit" class="btn btn-danger" name = "button" value = "Bye Bye">
+</form>
+</body>
 </html>
\ No newline at end of file
diff --git a/templates/recommend.html b/templates/recommend.html
index 744783b14e76490f3ad1b8f1b3a96ee0969a9d2c..8560b9f85d7bd944262e3de1183cceace2ccbedb 100644
--- a/templates/recommend.html
+++ b/templates/recommend.html
@@ -1,44 +1,44 @@
-<!DOCTYPE html>
-<html lang="en">
-<head>
-    <link rel="icon" href="http://bootstrapk.com/favicon.ico">
-    <link href="/static/css/bootstrap.min.css" rel="stylesheet">
-    <link href="/static/css/starter-template.css" rel="stylesheet">
-    <link href="/static/css/bootstrap-theme.css" rel="stylesheet">
-    <meta charset="UTF-8">
-    <title>Recommend Page</title>
-</head>
-<body>
-<form method="POST" action="">
-    <h1>Recommendation</h1>
-    <h2>Best Seller! We Recommend Copies:{% for val in details %} {{ val[0], val[1] }} {% endfor %}</h2>
-    Movie Suggestions
-    <input type = "text" name = "AccountID"/> <- Type Account ID
-    <input type = "submit" class = "btn btn-info" name = "button" value = "Im Feeling Lucky"/>
-    <br>
-    Give Rating
-    <input type = "text" name = "MovieID"/> <- Type Movie ID. You should type Account ID too ↑↑↑.
-    <br>
-    Rating:
-    <label>
-        1<input type = "radio" class = "radio" name = "rating" value = "1"/>
-    </label>
-    <label>
-        2<input type = "radio" class = "radio" name = "rating" value = "2"/>
-    </label>
-    <label>
-        3<input type = "radio" class = "radio" name = "rating" value = "3"/>
-    </label>
-    <label>
-        4<input type = "radio" class = "radio" name = "rating" value = "4"/>
-    </label>
-    <label>
-        5<input type = "radio" class = "radio" name = "rating" value = "5"/>
-    </label>
-    <input type = "submit" class = "btn btn-primary" name = "button" value = "Give Rating"/>
-    <br>
-<br>
-OR... <input type = "submit" class = "btn btn-default" name = "button" value = "Go Back"/>
-</form>
-</body>
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <link rel="icon" href="http://bootstrapk.com/favicon.ico">
+    <link href="/static/css/bootstrap.min.css" rel="stylesheet">
+    <link href="/static/css/starter-template.css" rel="stylesheet">
+    <link href="/static/css/bootstrap-theme.css" rel="stylesheet">
+    <meta charset="UTF-8">
+    <title>Recommend Page</title>
+</head>
+<body>
+<form method="POST" action="">
+    <h1>Recommendation</h1>
+    <h2>Best Seller! We Recommend Copies:{% for val in details %} {{ val[0], val[1] }} {% endfor %}</h2>
+    Movie Suggestions
+    <input type = "text" name = "AccountID"/> <- Type Account ID
+    <input type = "submit" class = "btn btn-info" name = "button" value = "Im Feeling Lucky"/>
+    <br>
+    Give Rating
+    <input type = "text" name = "MovieID"/> <- Type Movie ID. You should type Account ID too ↑↑↑.
+    <br>
+    Rating:
+    <label>
+        1<input type = "radio" class = "radio" name = "rating" value = "1"/>
+    </label>
+    <label>
+        2<input type = "radio" class = "radio" name = "rating" value = "2"/>
+    </label>
+    <label>
+        3<input type = "radio" class = "radio" name = "rating" value = "3"/>
+    </label>
+    <label>
+        4<input type = "radio" class = "radio" name = "rating" value = "4"/>
+    </label>
+    <label>
+        5<input type = "radio" class = "radio" name = "rating" value = "5"/>
+    </label>
+    <input type = "submit" class = "btn btn-primary" name = "button" value = "Give Rating"/>
+    <br>
+<br>
+OR... <input type = "submit" class = "btn btn-default" name = "button" value = "Go Back"/>
+</form>
+</body>
 </html>
\ No newline at end of file
diff --git a/templates/resultchm.html b/templates/resultchm.html
index 636550bd599ebfa3020c820173f5d4f0d7ebd07d..33b05c5b97827a1045dc1ab1fe4d45c6c3a0ae57 100644
--- a/templates/resultchm.html
+++ b/templates/resultchm.html
@@ -1,34 +1,34 @@
-<!DOCTYPE html>
-<html lang="en">
-<head>
-    <link rel="icon" href="http://bootstrapk.com/favicon.ico">
-    <link href="/static/css/bootstrap.min.css" rel="stylesheet">
-    <link href="/static/css/starter-template.css" rel="stylesheet">
-    <link href="/static/css/bootstrap-theme.css" rel="stylesheet">
-    <meta charset="UTF-8">
-    <title>Held Movie Results</title>
-</head>
-<body>
-Held Movie Results
-<table border = 3 class = "table table-striped">
-    <thead>
-        <tr style = "font-weight: bold">
-            <td>Movie ID</td>
-            <td>Movie Name</td>
-            <td>Account ID</td>
-        </tr>
-    </thead>
-    {% for val in details %}
-    <tr>
-        <td> {{ val[0] }}</td>
-        <td> {{ val[1] }}</td>
-        <td> {{ val[2] }}</td>
-    </tr>
-    {% endfor %}
-</table>
-
-<form method="POST" action="">
-    <input type = "submit" class = "btn btn-default" name = "button" value = "Main Page"/>
-</form>
-</body>
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <link rel="icon" href="http://bootstrapk.com/favicon.ico">
+    <link href="/static/css/bootstrap.min.css" rel="stylesheet">
+    <link href="/static/css/starter-template.css" rel="stylesheet">
+    <link href="/static/css/bootstrap-theme.css" rel="stylesheet">
+    <meta charset="UTF-8">
+    <title>Held Movie Results</title>
+</head>
+<body>
+Held Movie Results
+<table border = 3 class = "table table-striped">
+    <thead>
+        <tr style = "font-weight: bold">
+            <td>Movie ID</td>
+            <td>Movie Name</td>
+            <td>Account ID</td>
+        </tr>
+    </thead>
+    {% for val in details %}
+    <tr>
+        <td> {{ val[0] }}</td>
+        <td> {{ val[1] }}</td>
+        <td> {{ val[2] }}</td>
+    </tr>
+    {% endfor %}
+</table>
+
+<form method="POST" action="">
+    <input type = "submit" class = "btn btn-default" name = "button" value = "Main Page"/>
+</form>
+</body>
 </html>
\ No newline at end of file
diff --git a/templates/resultlucky.html b/templates/resultlucky.html
index 561e1cb91b4f09743d525ad6d42b509ebcb46e32..1b080337b870043269c0e59098bb138bb309123b 100644
--- a/templates/resultlucky.html
+++ b/templates/resultlucky.html
@@ -1,34 +1,34 @@
-<!DOCTYPE html>
-<html lang="en">
-<head>
-    <link rel="icon" href="http://bootstrapk.com/favicon.ico">
-    <link href="/static/css/bootstrap.min.css" rel="stylesheet">
-    <link href="/static/css/starter-template.css" rel="stylesheet">
-    <link href="/static/css/bootstrap-theme.css" rel="stylesheet">
-    <meta charset="UTF-8">
-    <title>Movie Suggestion</title>
-</head>
-<body>
-Movie Suggestion
-<table border = 3 class = "table table-striped">
-    <tr>
-        <td>First Name</td>
-        <td>Last Name</td>
-        <td>Movie Name</td>
-        <td>Movie Type</td>
-    </tr>
-    {% for val in details %}
-    <tr>
-        <td> {{ val[0] }}</td>
-        <td> {{ val[1] }}</td>
-        <td> {{ val[2] }}</td>
-        <td> {{ val[3] }}</td>
-    </tr>
-    {% endfor %}
-</table>
-
-<form method="POST" action="">
-    <input type = "submit" class = "btn btn-default" name = "button" value = "Main Page"/>
-</form>
-</body>
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <link rel="icon" href="http://bootstrapk.com/favicon.ico">
+    <link href="/static/css/bootstrap.min.css" rel="stylesheet">
+    <link href="/static/css/starter-template.css" rel="stylesheet">
+    <link href="/static/css/bootstrap-theme.css" rel="stylesheet">
+    <meta charset="UTF-8">
+    <title>Movie Suggestion</title>
+</head>
+<body>
+Movie Suggestion
+<table border = 3 class = "table table-striped">
+    <tr>
+        <td>First Name</td>
+        <td>Last Name</td>
+        <td>Movie Name</td>
+        <td>Movie Type</td>
+    </tr>
+    {% for val in details %}
+    <tr>
+        <td> {{ val[0] }}</td>
+        <td> {{ val[1] }}</td>
+        <td> {{ val[2] }}</td>
+        <td> {{ val[3] }}</td>
+    </tr>
+    {% endfor %}
+</table>
+
+<form method="POST" action="">
+    <input type = "submit" class = "btn btn-default" name = "button" value = "Main Page"/>
+</form>
+</body>
 </html>
\ No newline at end of file
diff --git a/templates/resultrating.html b/templates/resultrating.html
index 8fbcdf7e3b2ffff31729001fb2671541b1f77ed7..a2c7dd7a1414d0d53ba4dd7b44dc0b26ac72359f 100644
--- a/templates/resultrating.html
+++ b/templates/resultrating.html
@@ -1,42 +1,42 @@
-<!DOCTYPE html>
-<html lang="en">
-<head>
-    <link rel="icon" href="http://bootstrapk.com/favicon.ico">
-    <link href="/static/css/bootstrap.min.css" rel="stylesheet">
-    <link href="/static/css/starter-template.css" rel="stylesheet">
-    <link href="/static/css/bootstrap-theme.css" rel="stylesheet">
-    <meta charset="UTF-8">
-    <title>Rating Result</title>
-</head>
-<body>
-Rating Successfully done!
-<table border = 3 class = "table table-striped">
-    <tr>
-        <td>Order ID</td>
-        <td>Movie ID</td>
-        <td>Account</td>
-        <td>Movie Type</td>
-        <td>Borrowed Date</td>
-        <td>Returned Date</td>
-        <td>Return Check</td>
-        <td>Rating</td>
-    </tr>
-    {% for val in details %}
-    <tr>
-        <td> {{ val[0] }}</td>
-        <td> {{ val[1] }}</td>
-        <td> {{ val[2] }}</td>
-        <td> {{ val[3] }}</td>
-        <td> {{ val[4] }}</td>
-        <td> {{ val[5] }}</td>
-        <td> {{ val[6] }}</td>
-        <td> {{ val[7] }}</td>
-    </tr>
-    {% endfor %}
-</table>
-
-<form method="POST" action="">
-    <input type = "submit" class = "btn btn-default" name = "button" value = "Main Page"/>
-</form>
-</body>
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <link rel="icon" href="http://bootstrapk.com/favicon.ico">
+    <link href="/static/css/bootstrap.min.css" rel="stylesheet">
+    <link href="/static/css/starter-template.css" rel="stylesheet">
+    <link href="/static/css/bootstrap-theme.css" rel="stylesheet">
+    <meta charset="UTF-8">
+    <title>Rating Result</title>
+</head>
+<body>
+Rating Successfully done!
+<table border = 3 class = "table table-striped">
+    <tr>
+        <td>Order ID</td>
+        <td>Movie ID</td>
+        <td>Account</td>
+        <td>Movie Type</td>
+        <td>Borrowed Date</td>
+        <td>Returned Date</td>
+        <td>Return Check</td>
+        <td>Rating</td>
+    </tr>
+    {% for val in details %}
+    <tr>
+        <td> {{ val[0] }}</td>
+        <td> {{ val[1] }}</td>
+        <td> {{ val[2] }}</td>
+        <td> {{ val[3] }}</td>
+        <td> {{ val[4] }}</td>
+        <td> {{ val[5] }}</td>
+        <td> {{ val[6] }}</td>
+        <td> {{ val[7] }}</td>
+    </tr>
+    {% endfor %}
+</table>
+
+<form method="POST" action="">
+    <input type = "submit" class = "btn btn-default" name = "button" value = "Main Page"/>
+</form>
+</body>
 </html>
\ No newline at end of file
diff --git a/templates/resultsa.html b/templates/resultsa.html
index 9dcadc3d2f97014918fbdc5ef7bbb900a8a01011..d5d6e872a7ab69478b306ae59b01811f4046738b 100644
--- a/templates/resultsa.html
+++ b/templates/resultsa.html
@@ -1,36 +1,36 @@
-<!DOCTYPE html>
-<html lang="en">
-<head>
-    <link rel="icon" href="http://bootstrapk.com/favicon.ico">
-    <link href="/static/css/bootstrap.min.css" rel="stylesheet">
-    <link href="/static/css/starter-template.css" rel="stylesheet">
-    <link href="/static/css/bootstrap-theme.css" rel="stylesheet">
-    <meta charset="UTF-8">
-    <title>Actor Result</title>
-</head>
-<body>
-Actor Results
-<table border = 3 class = "table table-striped">
-    <tr>
-        <td>Movie ID</td>
-        <td>Movie Name</td>
-        <td>Actor ID</td>
-        <td>First Name</td>
-        <td>Last Name</td>
-    </tr>
-    {% for val in details %}
-    <tr>
-        <td> {{ val[0] }}</td>
-        <td> {{ val[1] }}</td>
-        <td> {{ val[2] }}</td>
-        <td> {{ val[3] }}</td>
-        <td> {{ val[4] }}</td>
-    </tr>
-    {% endfor %}
-</table>
-
-<form method="POST" action="">
-    <input type = "submit" class = "btn btn-default" name = "button" value = "Main Page"/>
-</form>
-</body>
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <link rel="icon" href="http://bootstrapk.com/favicon.ico">
+    <link href="/static/css/bootstrap.min.css" rel="stylesheet">
+    <link href="/static/css/starter-template.css" rel="stylesheet">
+    <link href="/static/css/bootstrap-theme.css" rel="stylesheet">
+    <meta charset="UTF-8">
+    <title>Actor Result</title>
+</head>
+<body>
+Actor Results
+<table border = 3 class = "table table-striped">
+    <tr>
+        <td>Movie ID</td>
+        <td>Movie Name</td>
+        <td>Actor ID</td>
+        <td>First Name</td>
+        <td>Last Name</td>
+    </tr>
+    {% for val in details %}
+    <tr>
+        <td> {{ val[0] }}</td>
+        <td> {{ val[1] }}</td>
+        <td> {{ val[2] }}</td>
+        <td> {{ val[3] }}</td>
+        <td> {{ val[4] }}</td>
+    </tr>
+    {% endfor %}
+</table>
+
+<form method="POST" action="">
+    <input type = "submit" class = "btn btn-default" name = "button" value = "Main Page"/>
+</form>
+</body>
 </html>
\ No newline at end of file
diff --git a/templates/resultsk.html b/templates/resultsk.html
index 431109843aa0bf27208d1e68670345edfe6083a4..f6af136a354cf1a5d9fcabeea5f6002a0b4283ef 100644
--- a/templates/resultsk.html
+++ b/templates/resultsk.html
@@ -1,30 +1,30 @@
-<!DOCTYPE html>
-<html lang="en">
-<head>
-    <link rel="icon" href="http://bootstrapk.com/favicon.ico">
-    <link href="/static/css/bootstrap.min.css" rel="stylesheet">
-    <link href="/static/css/starter-template.css" rel="stylesheet">
-    <link href="/static/css/bootstrap-theme.css" rel="stylesheet">
-    <meta charset="UTF-8">
-    <title>Keyword Result</title>
-</head>
-<body>
-Keyword Results
-<table border = 3 class = "table table-striped">
-    <tr>
-        <td>Movie ID</td>
-        <td>Movie Name</td>
-    </tr>
-    {% for val in details %}
-    <tr>
-        <td> {{ val[0] }}</td>
-        <td> {{ val[1] }}</td>
-    </tr>
-    {% endfor %}
-</table>
-
-<form method="POST" action="">
-    <input type = "submit" class = "btn btn-default" name = "button" value = "Main Page"/>
-</form>
-</body>
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <link rel="icon" href="http://bootstrapk.com/favicon.ico">
+    <link href="/static/css/bootstrap.min.css" rel="stylesheet">
+    <link href="/static/css/starter-template.css" rel="stylesheet">
+    <link href="/static/css/bootstrap-theme.css" rel="stylesheet">
+    <meta charset="UTF-8">
+    <title>Keyword Result</title>
+</head>
+<body>
+Keyword Results
+<table border = 3 class = "table table-striped">
+    <tr>
+        <td>Movie ID</td>
+        <td>Movie Name</td>
+    </tr>
+    {% for val in details %}
+    <tr>
+        <td> {{ val[0] }}</td>
+        <td> {{ val[1] }}</td>
+    </tr>
+    {% endfor %}
+</table>
+
+<form method="POST" action="">
+    <input type = "submit" class = "btn btn-default" name = "button" value = "Main Page"/>
+</form>
+</body>
 </html>
\ No newline at end of file
diff --git a/templates/resultsmq.html b/templates/resultsmq.html
index 7c30356e3dd41023bd6b7683b24c4bc0e75123ab..9ea6d2252b1bed83817144b111f52777ff08ffe5 100644
--- a/templates/resultsmq.html
+++ b/templates/resultsmq.html
@@ -1,34 +1,34 @@
-<!DOCTYPE html>
-<html lang="en">
-<head>
-    <link rel="icon" href="http://bootstrapk.com/favicon.ico">
-    <link href="/static/css/bootstrap.min.css" rel="stylesheet">
-    <link href="/static/css/starter-template.css" rel="stylesheet">
-    <link href="/static/css/bootstrap-theme.css" rel="stylesheet">
-    <meta charset="UTF-8">
-    <title>Movie Queue Result</title>
-</head>
-<body>
-Movie Queue Results
-<table border = 3 class = "table table-striped">
-    <tr style = "font-weight: bold">
-        <td>Movie Queue</td>
-        <td>Fist Name</td>
-        <td>Last Name</td>
-        <td>Account ID</td>
-    </tr>
-    {% for val in details %}
-    <tr>
-        <td> {{ val[0] }}</td>
-        <td> {{ val[1] }}</td>
-        <td> {{ val[2] }}</td>
-        <td> {{ val[3] }}</td>
-    </tr>
-    {% endfor %}
-</table>
-
-<form method="POST" action="">
-    <input type = "submit" class = "btn btn-default" name = "button" value = "Main Page"/>
-</form>
-</body>
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <link rel="icon" href="http://bootstrapk.com/favicon.ico">
+    <link href="/static/css/bootstrap.min.css" rel="stylesheet">
+    <link href="/static/css/starter-template.css" rel="stylesheet">
+    <link href="/static/css/bootstrap-theme.css" rel="stylesheet">
+    <meta charset="UTF-8">
+    <title>Movie Queue Result</title>
+</head>
+<body>
+Movie Queue Results
+<table border = 3 class = "table table-striped">
+    <tr style = "font-weight: bold">
+        <td>Movie Queue</td>
+        <td>Fist Name</td>
+        <td>Last Name</td>
+        <td>Account ID</td>
+    </tr>
+    {% for val in details %}
+    <tr>
+        <td> {{ val[0] }}</td>
+        <td> {{ val[1] }}</td>
+        <td> {{ val[2] }}</td>
+        <td> {{ val[3] }}</td>
+    </tr>
+    {% endfor %}
+</table>
+
+<form method="POST" action="">
+    <input type = "submit" class = "btn btn-default" name = "button" value = "Main Page"/>
+</form>
+</body>
 </html>
\ No newline at end of file
diff --git a/templates/resultsmt.html b/templates/resultsmt.html
index 3ab687cd847ab5300be20cb4deeb2f2c32e516d3..1619b3cb770888b13e45769c7e136246ff43a582 100644
--- a/templates/resultsmt.html
+++ b/templates/resultsmt.html
@@ -1,32 +1,32 @@
-<!DOCTYPE html>
-<html lang="en">
-<head>
-    <link rel="icon" href="http://bootstrapk.com/favicon.ico">
-    <link href="/static/css/bootstrap.min.css" rel="stylesheet">
-    <link href="/static/css/starter-template.css" rel="stylesheet">
-    <link href="/static/css/bootstrap-theme.css" rel="stylesheet">
-    <meta charset="UTF-8">
-    <title>Movie Type Result</title>
-</head>
-<body>
-Movie Type Results
-<table border = 3 class = "table table-striped">
-    <tr>
-        <td>Movie ID</td>
-        <td>Movie Name</td>
-        <td>Movie Type</td>
-    </tr>
-    {% for val in details %}
-    <tr>
-        <td> {{ val[0] }}</td>
-        <td> {{ val[1] }}</td>
-        <td> {{ val[2] }}</td>
-    </tr>
-    {% endfor %}
-</table>
-
-<form method="POST" action="">
-    <input type = "submit" class = "btn btn-default" name = "button" value = "Main Page"/>
-</form>
-</body>
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <link rel="icon" href="http://bootstrapk.com/favicon.ico">
+    <link href="/static/css/bootstrap.min.css" rel="stylesheet">
+    <link href="/static/css/starter-template.css" rel="stylesheet">
+    <link href="/static/css/bootstrap-theme.css" rel="stylesheet">
+    <meta charset="UTF-8">
+    <title>Movie Type Result</title>
+</head>
+<body>
+Movie Type Results
+<table border = 3 class = "table table-striped">
+    <tr>
+        <td>Movie ID</td>
+        <td>Movie Name</td>
+        <td>Movie Type</td>
+    </tr>
+    {% for val in details %}
+    <tr>
+        <td> {{ val[0] }}</td>
+        <td> {{ val[1] }}</td>
+        <td> {{ val[2] }}</td>
+    </tr>
+    {% endfor %}
+</table>
+
+<form method="POST" action="">
+    <input type = "submit" class = "btn btn-default" name = "button" value = "Main Page"/>
+</form>
+</body>
 </html>
\ No newline at end of file
diff --git a/templates/search.html b/templates/search.html
index 6bb77961d733e0ea7c4c6b404722b0d715e2d38a..242d331b8cb7441e0de2cfa7db673714fc4c1fa1 100644
--- a/templates/search.html
+++ b/templates/search.html
@@ -1,47 +1,47 @@
-<!DOCTYPE html>
-<html lang="en">
-<head>
-    <link rel="icon" href="http://bootstrapk.com/favicon.ico">
-    <link href="/static/css/bootstrap.min.css" rel="stylesheet">
-    <link href="/static/css/starter-template.css" rel="stylesheet">
-    <link href="/static/css/bootstrap-theme.css" rel="stylesheet">
-    <meta charset="UTF-8">
-    <title>Search</title>
-</head>
-<body>
-<h1>Search</h1>
-<h3>You can search here
-</h3>
-<form method="POST" action="">
-    Currently Held Movie
-    <input type = "text" name = "Current"/> <- Type AccountID
-    <br>
-    <input type = "submit" class = "btn btn-primary" name = "button" value = "Search Held Movie"/>
-    <br>
-    Queue of Movies
-    <input type = "text" name = "Queue"/> <- Type AccountID
-    <br>
-    <input type = "submit" class = "btn btn-success" name = "button" value = "Search Movie Queue"/>
-    <br>
-    Movie Type
-    <input type = "text" name = "MovieType"/> <- Type MovieType
-    <br>
-    <input type = "submit" class = "btn btn-danger" name = "button" value = "Search Movie Type"/>
-    <br>
-    Movie Containing Particular 'keyword' or 'keyword set'
-    <input type = "text" name = "Keyword"/> <- Type part of Movie Name
-    <br>
-    <input type = "submit" class = "btn btn-warning" name = "button" value = "Search Keyword"/>
-    <br>
-    Actor appearing What Movie?
-    <input type = "text" name = "FActor"/> <- First Name
-    <input type = "text" name = "LActor"/> <- Last Name
-    <br>
-    <input type = "submit" class = "btn btn-info" name = "button" value = "Search Actor"/>
-    <br>
-    <br>
-    <br>
-    OR... <input type = "submit" class = "btn btn-default" name = "button" value = "Go Back"/>
-</form>
-</body>
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <link rel="icon" href="http://bootstrapk.com/favicon.ico">
+    <link href="/static/css/bootstrap.min.css" rel="stylesheet">
+    <link href="/static/css/starter-template.css" rel="stylesheet">
+    <link href="/static/css/bootstrap-theme.css" rel="stylesheet">
+    <meta charset="UTF-8">
+    <title>Search</title>
+</head>
+<body>
+<h1>Search</h1>
+<h3>You can search here
+</h3>
+<form method="POST" action="">
+    Currently Held Movie
+    <input type = "text" name = "Current"/> <- Type AccountID
+    <br>
+    <input type = "submit" class = "btn btn-primary" name = "button" value = "Search Held Movie"/>
+    <br>
+    Queue of Movies
+    <input type = "text" name = "Queue"/> <- Type AccountID
+    <br>
+    <input type = "submit" class = "btn btn-success" name = "button" value = "Search Movie Queue"/>
+    <br>
+    Movie Type
+    <input type = "text" name = "MovieType"/> <- Type MovieType
+    <br>
+    <input type = "submit" class = "btn btn-danger" name = "button" value = "Search Movie Type"/>
+    <br>
+    Movie Containing Particular 'keyword' or 'keyword set'
+    <input type = "text" name = "Keyword"/> <- Type part of Movie Name
+    <br>
+    <input type = "submit" class = "btn btn-warning" name = "button" value = "Search Keyword"/>
+    <br>
+    Actor appearing What Movie?
+    <input type = "text" name = "FActor"/> <- First Name
+    <input type = "text" name = "LActor"/> <- Last Name
+    <br>
+    <input type = "submit" class = "btn btn-info" name = "button" value = "Search Actor"/>
+    <br>
+    <br>
+    <br>
+    OR... <input type = "submit" class = "btn btn-default" name = "button" value = "Go Back"/>
+</form>
+</body>
 </html>
\ No newline at end of file
diff --git a/templates/signin.html b/templates/signin.html
index 157587797ff3d606606b3268aed22e5bc04f5b35..4fd7c4f77043b91b4b72c610eefe01507b609180 100644
--- a/templates/signin.html
+++ b/templates/signin.html
@@ -1,43 +1,43 @@
-<!DOCTYPE html>
-<html lang="en">
-<head>
-    <meta charset="UTF-8">
-    <link rel="icon" href="http://bootstrapk.com/favicon.ico">
-    <link href="/static/css/bootstrap.min.css" rel="stylesheet">
-    <link href="/static/css/starter-template.css" rel="stylesheet">
-    <link href="/static/css/bootstrap-theme.css" rel="stylesheet">
-    <title>Sign IN</title>
-</head>
-<body>
-<h1>Sign In Form</h1>
-<form method="POST" action="">
-    First Name <input type = "text" name = "FirstName"/>
-    Last Name <input type = "text" name = "LastName"/>
-    <br>
-    <br>
-    ID <input type = "text" name = "AccountID"/>
-    <br>
-    Password <input type = "password" name = "Password"/>
-    <br>
-    <br>
-
-    Email <input type = "text" name = "Email"/>
-    <br>
-    Phone Number <input type = "text" name = "PhoneNumber"/>
-    <br>
-    <br>
-    Your Address<br>
-    Country <input type = "text" name = "Country"/>
-    <br>
-    City, Province <input type = "text" name = "City_Province"/>
-    <br>
-    Street <input type = "text" name = "StreetAddress"/>
-    ZipCode (example: 08090, 04493, ...) <input type = "number" name = "ZipCode"/>
-
-    <br>
-    <br>
-    <input type = "submit" class = "btn btn-success" name = "button" value = "Submit">
-    <input type = "submit" class = "btn btn-danger" name = "button" value = "Cancel">
-</form>
-</body>
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <link rel="icon" href="http://bootstrapk.com/favicon.ico">
+    <link href="/static/css/bootstrap.min.css" rel="stylesheet">
+    <link href="/static/css/starter-template.css" rel="stylesheet">
+    <link href="/static/css/bootstrap-theme.css" rel="stylesheet">
+    <title>Sign IN</title>
+</head>
+<body>
+<h1>Sign In Form</h1>
+<form method="POST" action="">
+    First Name <input type = "text" name = "FirstName"/>
+    Last Name <input type = "text" name = "LastName"/>
+    <br>
+    <br>
+    ID <input type = "text" name = "AccountID"/>
+    <br>
+    Password <input type = "password" name = "Password"/>
+    <br>
+    <br>
+
+    Email <input type = "text" name = "Email"/>
+    <br>
+    Phone Number <input type = "text" name = "PhoneNumber"/>
+    <br>
+    <br>
+    Your Address<br>
+    Country <input type = "text" name = "Country"/>
+    <br>
+    City, Province <input type = "text" name = "City_Province"/>
+    <br>
+    Street <input type = "text" name = "StreetAddress"/>
+    ZipCode (example: 08090, 04493, ...) <input type = "number" name = "ZipCode"/>
+
+    <br>
+    <br>
+    <input type = "submit" class = "btn btn-success" name = "button" value = "Submit">
+    <input type = "submit" class = "btn btn-danger" name = "button" value = "Cancel">
+</form>
+</body>
 </html>
\ No newline at end of file
diff --git a/venv/Lib/site-packages/Flask-1.1.2.dist-info/RECORD b/venv/Lib/site-packages/Flask-1.1.2.dist-info/RECORD
index 330703c027f0d175ebf914f63ab07bf004b43513..1e5091f629e40f653f42548ec6b57af5eca3b7ab 100644
--- a/venv/Lib/site-packages/Flask-1.1.2.dist-info/RECORD
+++ b/venv/Lib/site-packages/Flask-1.1.2.dist-info/RECORD
@@ -1,49 +1,49 @@
-../../Scripts/flask.exe,sha256=iPSJ0m2pUXgNP5F77kngB3GJAGjZMBwxxG81M4A2hqM,106365
-Flask-1.1.2.dist-info/INSTALLER,sha256=zuuue4knoyJ-UwPPXg8fezS7VCrXJQrAP7zeNuwvFQg,4
-Flask-1.1.2.dist-info/LICENSE.rst,sha256=SJqOEQhQntmKN7uYPhHg9-HTHwvY-Zp5yESOf_N9B-o,1475
-Flask-1.1.2.dist-info/METADATA,sha256=3INpPWH6nKfZ33R2N-bQZy4TOe1wQCMweZc9mwcNrtc,4591
-Flask-1.1.2.dist-info/RECORD,,
-Flask-1.1.2.dist-info/REQUESTED,sha256=47DEQpj8HBSa-_TImW-5JCeuQeRkm5NMpJWZG3hSuFU,0
-Flask-1.1.2.dist-info/WHEEL,sha256=8zNYZbwQSXoB9IfXOjPfeNwvAsALAjffgk27FqvCWbo,110
-Flask-1.1.2.dist-info/entry_points.txt,sha256=gBLA1aKg0OYR8AhbAfg8lnburHtKcgJLDU52BBctN0k,42
-Flask-1.1.2.dist-info/top_level.txt,sha256=dvi65F6AeGWVU0TBpYiC04yM60-FX1gJFkK31IKQr5c,6
-flask/__init__.py,sha256=YnA9wkwbJcnb_jTT-nMsMFeFE_UWt33khKzdHmMSuyI,1894
-flask/__main__.py,sha256=fjVtt3QTANXlpJCOv3Ha7d5H-76MwzSIOab7SFD9TEk,254
-flask/__pycache__/__init__.cpython-39.pyc,,
-flask/__pycache__/__main__.cpython-39.pyc,,
-flask/__pycache__/_compat.cpython-39.pyc,,
-flask/__pycache__/app.cpython-39.pyc,,
-flask/__pycache__/blueprints.cpython-39.pyc,,
-flask/__pycache__/cli.cpython-39.pyc,,
-flask/__pycache__/config.cpython-39.pyc,,
-flask/__pycache__/ctx.cpython-39.pyc,,
-flask/__pycache__/debughelpers.cpython-39.pyc,,
-flask/__pycache__/globals.cpython-39.pyc,,
-flask/__pycache__/helpers.cpython-39.pyc,,
-flask/__pycache__/logging.cpython-39.pyc,,
-flask/__pycache__/sessions.cpython-39.pyc,,
-flask/__pycache__/signals.cpython-39.pyc,,
-flask/__pycache__/templating.cpython-39.pyc,,
-flask/__pycache__/testing.cpython-39.pyc,,
-flask/__pycache__/views.cpython-39.pyc,,
-flask/__pycache__/wrappers.cpython-39.pyc,,
-flask/_compat.py,sha256=8KPT54Iig96TuLipdogLRHNYToIcg-xPhnSV5VRERnw,4099
-flask/app.py,sha256=tmEhx_XrIRP24vZg39dHMWFzJ2jj-YxIcd51LaIT5cE,98059
-flask/blueprints.py,sha256=vkdm8NusGsfZUeIfPdCluj733QFmiQcT4Sk1tuZLUjw,21400
-flask/cli.py,sha256=SIb22uq9wYBeB2tKMl0pYdhtZ1MAQyZtPL-3m6es4G0,31035
-flask/config.py,sha256=3dejvQRYfNHw_V7dCLMxU8UNFpL34xIKemN7gHZIZ8Y,10052
-flask/ctx.py,sha256=cks-omGedkxawHFo6bKIrdOHsJCAgg1i_NWw_htxb5U,16724
-flask/debughelpers.py,sha256=-whvPKuAoU8AZ9c1z_INuOeBgfYDqE1J2xNBsoriugU,6475
-flask/globals.py,sha256=OgcHb6_NCyX6-TldciOdKcyj4PNfyQwClxdMhvov6aA,1637
-flask/helpers.py,sha256=IHa578HU_3XAAo1wpXQv24MYRYO5TzaiDQQwvUIcE6Q,43074
-flask/json/__init__.py,sha256=6nITbZYiYOPB8Qfi1-dvsblwn01KRz8VOsMBIZyaYek,11988
-flask/json/__pycache__/__init__.cpython-39.pyc,,
-flask/json/__pycache__/tag.cpython-39.pyc,,
-flask/json/tag.py,sha256=vq9GOllg_0kTWKuVFrwmkeOQzR-jdBD23x-89JyCCQI,8306
-flask/logging.py,sha256=WcY5UkqTysGfmosyygSlXyZYGwOp3y-VsE6ehoJ48dk,3250
-flask/sessions.py,sha256=G0KsEkr_i1LG_wOINwFSOW3ts7Xbv4bNgEZKc7TRloc,14360
-flask/signals.py,sha256=yYLOed2x8WnQ7pirGalQYfpYpCILJ0LJhmNSrnWvjqw,2212
-flask/templating.py,sha256=F8E_IZXn9BGsjMzUJ5N_ACMyZdiFBp_SSEaUunvfZ7g,4939
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diff --git a/venv/Lib/site-packages/Flask_MySQLdb-0.2.0-py3.9.egg-info/PKG-INFO b/venv/Lib/site-packages/Flask_MySQLdb-0.2.0-py3.9.egg-info/PKG-INFO
index 2068ec3d9814e581612fff6106cb8b69cf023c7c..c300cc291566649212a11862218451d25ce5bc43 100644
--- a/venv/Lib/site-packages/Flask_MySQLdb-0.2.0-py3.9.egg-info/PKG-INFO
+++ b/venv/Lib/site-packages/Flask_MySQLdb-0.2.0-py3.9.egg-info/PKG-INFO
@@ -1,24 +1,24 @@
-Metadata-Version: 1.1
-Name: Flask-MySQLdb
-Version: 0.2.0
-Summary: MySQLdb extension for Flask
-Home-page: https://github.com/admiralobvious/flask-mysqldb
-Author: Alexandre Ferland
-Author-email: aferlandqc@gmail.com
-License: MIT
-Description: 
-        Flask-MySQLdb
-        ----------------
-        
-        MySQLdb extension for Flask
-        
-Platform: any
-Classifier: Environment :: Web Environment
-Classifier: Intended Audience :: Developers
-Classifier: License :: OSI Approved :: MIT License
-Classifier: Operating System :: OS Independent
-Classifier: Programming Language :: Python :: 2.6
-Classifier: Programming Language :: Python :: 2.7
-Classifier: Programming Language :: Python :: 3.3
-Classifier: Programming Language :: Python :: 3.4
-Classifier: Topic :: Software Development :: Libraries :: Python Modules
+Metadata-Version: 1.1
+Name: Flask-MySQLdb
+Version: 0.2.0
+Summary: MySQLdb extension for Flask
+Home-page: https://github.com/admiralobvious/flask-mysqldb
+Author: Alexandre Ferland
+Author-email: aferlandqc@gmail.com
+License: MIT
+Description: 
+        Flask-MySQLdb
+        ----------------
+        
+        MySQLdb extension for Flask
+        
+Platform: any
+Classifier: Environment :: Web Environment
+Classifier: Intended Audience :: Developers
+Classifier: License :: OSI Approved :: MIT License
+Classifier: Operating System :: OS Independent
+Classifier: Programming Language :: Python :: 2.6
+Classifier: Programming Language :: Python :: 2.7
+Classifier: Programming Language :: Python :: 3.3
+Classifier: Programming Language :: Python :: 3.4
+Classifier: Topic :: Software Development :: Libraries :: Python Modules
diff --git a/venv/Lib/site-packages/Flask_MySQLdb-0.2.0-py3.9.egg-info/installed-files.txt b/venv/Lib/site-packages/Flask_MySQLdb-0.2.0-py3.9.egg-info/installed-files.txt
index 1a7182274d14cff75dffbbf8c165c700d6d1a8e5..815d7d862057ff2383a8642cdc5e05f9c575407a 100644
--- a/venv/Lib/site-packages/Flask_MySQLdb-0.2.0-py3.9.egg-info/installed-files.txt
+++ b/venv/Lib/site-packages/Flask_MySQLdb-0.2.0-py3.9.egg-info/installed-files.txt
@@ -1,9 +1,9 @@
-..\flask_mysqldb\__init__.py
-..\flask_mysqldb\__pycache__\__init__.cpython-39.pyc
-PKG-INFO
-SOURCES.txt
-dependency_links.txt
-not-zip-safe
-pbr.json
-requires.txt
-top_level.txt
+..\flask_mysqldb\__init__.py
+..\flask_mysqldb\__pycache__\__init__.cpython-39.pyc
+PKG-INFO
+SOURCES.txt
+dependency_links.txt
+not-zip-safe
+pbr.json
+requires.txt
+top_level.txt
diff --git a/venv/Lib/site-packages/Jinja2-2.11.2.dist-info/RECORD b/venv/Lib/site-packages/Jinja2-2.11.2.dist-info/RECORD
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--- a/venv/Lib/site-packages/Jinja2-2.11.2.dist-info/RECORD
+++ b/venv/Lib/site-packages/Jinja2-2.11.2.dist-info/RECORD
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index 9defab7de90434d485265af199f18c9fdf6a3ba3..56ea7bbd07f9502c53d0b4ffa35393422771032c 100644
--- a/venv/Lib/site-packages/MarkupSafe-1.1.1-py3.9.egg-info/PKG-INFO
+++ b/venv/Lib/site-packages/MarkupSafe-1.1.1-py3.9.egg-info/PKG-INFO
@@ -1,101 +1,101 @@
-Metadata-Version: 1.2
-Name: MarkupSafe
-Version: 1.1.1
-Summary: Safely add untrusted strings to HTML/XML markup.
-Home-page: https://palletsprojects.com/p/markupsafe/
-Author: Armin Ronacher
-Author-email: armin.ronacher@active-4.com
-Maintainer: The Pallets Team
-Maintainer-email: contact@palletsprojects.com
-License: BSD-3-Clause
-Project-URL: Documentation, https://markupsafe.palletsprojects.com/
-Project-URL: Code, https://github.com/pallets/markupsafe
-Project-URL: Issue tracker, https://github.com/pallets/markupsafe/issues
-Description: MarkupSafe
-        ==========
-        
-        MarkupSafe implements a text object that escapes characters so it is
-        safe to use in HTML and XML. Characters that have special meanings are
-        replaced so that they display as the actual characters. This mitigates
-        injection attacks, meaning untrusted user input can safely be displayed
-        on a page.
-        
-        
-        Installing
-        ----------
-        
-        Install and update using `pip`_:
-        
-        .. code-block:: text
-        
-            pip install -U MarkupSafe
-        
-        .. _pip: https://pip.pypa.io/en/stable/quickstart/
-        
-        
-        Examples
-        --------
-        
-        .. code-block:: pycon
-        
-            >>> from markupsafe import Markup, escape
-            >>> # escape replaces special characters and wraps in Markup
-            >>> escape('<script>alert(document.cookie);</script>')
-            Markup(u'&lt;script&gt;alert(document.cookie);&lt;/script&gt;')
-            >>> # wrap in Markup to mark text "safe" and prevent escaping
-            >>> Markup('<strong>Hello</strong>')
-            Markup('<strong>hello</strong>')
-            >>> escape(Markup('<strong>Hello</strong>'))
-            Markup('<strong>hello</strong>')
-            >>> # Markup is a text subclass (str on Python 3, unicode on Python 2)
-            >>> # methods and operators escape their arguments
-            >>> template = Markup("Hello <em>%s</em>")
-            >>> template % '"World"'
-            Markup('Hello <em>&#34;World&#34;</em>')
-        
-        
-        Donate
-        ------
-        
-        The Pallets organization develops and supports MarkupSafe and other
-        libraries that use it. In order to grow the community of contributors
-        and users, and allow the maintainers to devote more time to the
-        projects, `please donate today`_.
-        
-        .. _please donate today: https://palletsprojects.com/donate
-        
-        
-        Links
-        -----
-        
-        *   Website: https://palletsprojects.com/p/markupsafe/
-        *   Documentation: https://markupsafe.palletsprojects.com/
-        *   License: `BSD-3-Clause <https://github.com/pallets/markupsafe/blob/master/LICENSE.rst>`_
-        *   Releases: https://pypi.org/project/MarkupSafe/
-        *   Code: https://github.com/pallets/markupsafe
-        *   Issue tracker: https://github.com/pallets/markupsafe/issues
-        *   Test status:
-        
-            *   Linux, Mac: https://travis-ci.org/pallets/markupsafe
-            *   Windows: https://ci.appveyor.com/project/pallets/markupsafe
-        
-        *   Test coverage: https://codecov.io/gh/pallets/markupsafe
-        
-Platform: UNKNOWN
-Classifier: Development Status :: 5 - Production/Stable
-Classifier: Environment :: Web Environment
-Classifier: Intended Audience :: Developers
-Classifier: License :: OSI Approved :: BSD License
-Classifier: Operating System :: OS Independent
-Classifier: Programming Language :: Python
-Classifier: Programming Language :: Python :: 2
-Classifier: Programming Language :: Python :: 2.7
-Classifier: Programming Language :: Python :: 3
-Classifier: Programming Language :: Python :: 3.4
-Classifier: Programming Language :: Python :: 3.5
-Classifier: Programming Language :: Python :: 3.6
-Classifier: Programming Language :: Python :: 3.7
-Classifier: Topic :: Internet :: WWW/HTTP :: Dynamic Content
-Classifier: Topic :: Software Development :: Libraries :: Python Modules
-Classifier: Topic :: Text Processing :: Markup :: HTML
-Requires-Python: >=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*
+Metadata-Version: 1.2
+Name: MarkupSafe
+Version: 1.1.1
+Summary: Safely add untrusted strings to HTML/XML markup.
+Home-page: https://palletsprojects.com/p/markupsafe/
+Author: Armin Ronacher
+Author-email: armin.ronacher@active-4.com
+Maintainer: The Pallets Team
+Maintainer-email: contact@palletsprojects.com
+License: BSD-3-Clause
+Project-URL: Documentation, https://markupsafe.palletsprojects.com/
+Project-URL: Code, https://github.com/pallets/markupsafe
+Project-URL: Issue tracker, https://github.com/pallets/markupsafe/issues
+Description: MarkupSafe
+        ==========
+        
+        MarkupSafe implements a text object that escapes characters so it is
+        safe to use in HTML and XML. Characters that have special meanings are
+        replaced so that they display as the actual characters. This mitigates
+        injection attacks, meaning untrusted user input can safely be displayed
+        on a page.
+        
+        
+        Installing
+        ----------
+        
+        Install and update using `pip`_:
+        
+        .. code-block:: text
+        
+            pip install -U MarkupSafe
+        
+        .. _pip: https://pip.pypa.io/en/stable/quickstart/
+        
+        
+        Examples
+        --------
+        
+        .. code-block:: pycon
+        
+            >>> from markupsafe import Markup, escape
+            >>> # escape replaces special characters and wraps in Markup
+            >>> escape('<script>alert(document.cookie);</script>')
+            Markup(u'&lt;script&gt;alert(document.cookie);&lt;/script&gt;')
+            >>> # wrap in Markup to mark text "safe" and prevent escaping
+            >>> Markup('<strong>Hello</strong>')
+            Markup('<strong>hello</strong>')
+            >>> escape(Markup('<strong>Hello</strong>'))
+            Markup('<strong>hello</strong>')
+            >>> # Markup is a text subclass (str on Python 3, unicode on Python 2)
+            >>> # methods and operators escape their arguments
+            >>> template = Markup("Hello <em>%s</em>")
+            >>> template % '"World"'
+            Markup('Hello <em>&#34;World&#34;</em>')
+        
+        
+        Donate
+        ------
+        
+        The Pallets organization develops and supports MarkupSafe and other
+        libraries that use it. In order to grow the community of contributors
+        and users, and allow the maintainers to devote more time to the
+        projects, `please donate today`_.
+        
+        .. _please donate today: https://palletsprojects.com/donate
+        
+        
+        Links
+        -----
+        
+        *   Website: https://palletsprojects.com/p/markupsafe/
+        *   Documentation: https://markupsafe.palletsprojects.com/
+        *   License: `BSD-3-Clause <https://github.com/pallets/markupsafe/blob/master/LICENSE.rst>`_
+        *   Releases: https://pypi.org/project/MarkupSafe/
+        *   Code: https://github.com/pallets/markupsafe
+        *   Issue tracker: https://github.com/pallets/markupsafe/issues
+        *   Test status:
+        
+            *   Linux, Mac: https://travis-ci.org/pallets/markupsafe
+            *   Windows: https://ci.appveyor.com/project/pallets/markupsafe
+        
+        *   Test coverage: https://codecov.io/gh/pallets/markupsafe
+        
+Platform: UNKNOWN
+Classifier: Development Status :: 5 - Production/Stable
+Classifier: Environment :: Web Environment
+Classifier: Intended Audience :: Developers
+Classifier: License :: OSI Approved :: BSD License
+Classifier: Operating System :: OS Independent
+Classifier: Programming Language :: Python
+Classifier: Programming Language :: Python :: 2
+Classifier: Programming Language :: Python :: 2.7
+Classifier: Programming Language :: Python :: 3
+Classifier: Programming Language :: Python :: 3.4
+Classifier: Programming Language :: Python :: 3.5
+Classifier: Programming Language :: Python :: 3.6
+Classifier: Programming Language :: Python :: 3.7
+Classifier: Topic :: Internet :: WWW/HTTP :: Dynamic Content
+Classifier: Topic :: Software Development :: Libraries :: Python Modules
+Classifier: Topic :: Text Processing :: Markup :: HTML
+Requires-Python: >=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*
diff --git a/venv/Lib/site-packages/MarkupSafe-1.1.1-py3.9.egg-info/installed-files.txt b/venv/Lib/site-packages/MarkupSafe-1.1.1-py3.9.egg-info/installed-files.txt
index 71d13e6c890c771cc3aa6fe904b2d71108467926..dd1018901e0560f01c72bb1e11e2e22070da6c58 100644
--- a/venv/Lib/site-packages/MarkupSafe-1.1.1-py3.9.egg-info/installed-files.txt
+++ b/venv/Lib/site-packages/MarkupSafe-1.1.1-py3.9.egg-info/installed-files.txt
@@ -1,14 +1,14 @@
-..\markupsafe\__init__.py
-..\markupsafe\__pycache__\__init__.cpython-39.pyc
-..\markupsafe\__pycache__\_compat.cpython-39.pyc
-..\markupsafe\__pycache__\_constants.cpython-39.pyc
-..\markupsafe\__pycache__\_native.cpython-39.pyc
-..\markupsafe\_compat.py
-..\markupsafe\_constants.py
-..\markupsafe\_native.py
-..\markupsafe\_speedups.c
-..\markupsafe\_speedups.cp39-win_amd64.pyd
-PKG-INFO
-SOURCES.txt
-dependency_links.txt
-top_level.txt
+..\markupsafe\__init__.py
+..\markupsafe\__pycache__\__init__.cpython-39.pyc
+..\markupsafe\__pycache__\_compat.cpython-39.pyc
+..\markupsafe\__pycache__\_constants.cpython-39.pyc
+..\markupsafe\__pycache__\_native.cpython-39.pyc
+..\markupsafe\_compat.py
+..\markupsafe\_constants.py
+..\markupsafe\_native.py
+..\markupsafe\_speedups.c
+..\markupsafe\_speedups.cp39-win_amd64.pyd
+PKG-INFO
+SOURCES.txt
+dependency_links.txt
+top_level.txt
diff --git a/venv/Lib/site-packages/MySQLdb/__init__.py b/venv/Lib/site-packages/MySQLdb/__init__.py
index 824acace5e85354b49bc57f1cb92c525883d6c70..4b5c175190b25de89708a00772b79a39d48c6bd8 100644
--- a/venv/Lib/site-packages/MySQLdb/__init__.py
+++ b/venv/Lib/site-packages/MySQLdb/__init__.py
@@ -1,179 +1,179 @@
-"""
-MySQLdb - A DB API v2.0 compatible interface to MySQL.
-
-This package is a wrapper around _mysql, which mostly implements the
-MySQL C API.
-
-connect() -- connects to server
-
-See the C API specification and the MySQL documentation for more info
-on other items.
-
-For information on how MySQLdb handles type conversion, see the
-MySQLdb.converters module.
-"""
-
-try:
-    from MySQLdb.release import version_info
-    from . import _mysql
-
-    assert version_info == _mysql.version_info
-except Exception:
-    raise ImportError(
-        "this is MySQLdb version {}, but _mysql is version {!r}\n_mysql: {!r}".format(
-            version_info, _mysql.version_info, _mysql.__file__
-        )
-    )
-
-
-from ._mysql import (
-    NotSupportedError,
-    OperationalError,
-    get_client_info,
-    ProgrammingError,
-    Error,
-    InterfaceError,
-    debug,
-    IntegrityError,
-    string_literal,
-    MySQLError,
-    DataError,
-    escape,
-    escape_string,
-    DatabaseError,
-    InternalError,
-    Warning,
-)
-from MySQLdb.constants import FIELD_TYPE
-from MySQLdb.times import (
-    Date,
-    Time,
-    Timestamp,
-    DateFromTicks,
-    TimeFromTicks,
-    TimestampFromTicks,
-)
-
-try:
-    frozenset
-except NameError:
-    from sets import ImmutableSet as frozenset
-
-threadsafety = 1
-apilevel = "2.0"
-paramstyle = "format"
-
-
-class DBAPISet(frozenset):
-    """A special type of set for which A == x is true if A is a
-    DBAPISet and x is a member of that set."""
-
-    def __eq__(self, other):
-        if isinstance(other, DBAPISet):
-            return not self.difference(other)
-        return other in self
-
-
-STRING = DBAPISet([FIELD_TYPE.ENUM, FIELD_TYPE.STRING, FIELD_TYPE.VAR_STRING])
-BINARY = DBAPISet(
-    [
-        FIELD_TYPE.BLOB,
-        FIELD_TYPE.LONG_BLOB,
-        FIELD_TYPE.MEDIUM_BLOB,
-        FIELD_TYPE.TINY_BLOB,
-    ]
-)
-NUMBER = DBAPISet(
-    [
-        FIELD_TYPE.DECIMAL,
-        FIELD_TYPE.DOUBLE,
-        FIELD_TYPE.FLOAT,
-        FIELD_TYPE.INT24,
-        FIELD_TYPE.LONG,
-        FIELD_TYPE.LONGLONG,
-        FIELD_TYPE.TINY,
-        FIELD_TYPE.YEAR,
-        FIELD_TYPE.NEWDECIMAL,
-    ]
-)
-DATE = DBAPISet([FIELD_TYPE.DATE])
-TIME = DBAPISet([FIELD_TYPE.TIME])
-TIMESTAMP = DBAPISet([FIELD_TYPE.TIMESTAMP, FIELD_TYPE.DATETIME])
-DATETIME = TIMESTAMP
-ROWID = DBAPISet()
-
-
-def test_DBAPISet_set_equality():
-    assert STRING == STRING
-
-
-def test_DBAPISet_set_inequality():
-    assert STRING != NUMBER
-
-
-def test_DBAPISet_set_equality_membership():
-    assert FIELD_TYPE.VAR_STRING == STRING
-
-
-def test_DBAPISet_set_inequality_membership():
-    assert FIELD_TYPE.DATE != STRING
-
-
-def Binary(x):
-    return bytes(x)
-
-
-def Connect(*args, **kwargs):
-    """Factory function for connections.Connection."""
-    from MySQLdb.connections import Connection
-
-    return Connection(*args, **kwargs)
-
-
-connect = Connection = Connect
-
-__all__ = [
-    "BINARY",
-    "Binary",
-    "Connect",
-    "Connection",
-    "DATE",
-    "Date",
-    "Time",
-    "Timestamp",
-    "DateFromTicks",
-    "TimeFromTicks",
-    "TimestampFromTicks",
-    "DataError",
-    "DatabaseError",
-    "Error",
-    "FIELD_TYPE",
-    "IntegrityError",
-    "InterfaceError",
-    "InternalError",
-    "MySQLError",
-    "NUMBER",
-    "NotSupportedError",
-    "DBAPISet",
-    "OperationalError",
-    "ProgrammingError",
-    "ROWID",
-    "STRING",
-    "TIME",
-    "TIMESTAMP",
-    "Warning",
-    "apilevel",
-    "connect",
-    "connections",
-    "constants",
-    "converters",
-    "cursors",
-    "debug",
-    "escape",
-    "escape_string",
-    "get_client_info",
-    "paramstyle",
-    "string_literal",
-    "threadsafety",
-    "version_info",
-]
+"""
+MySQLdb - A DB API v2.0 compatible interface to MySQL.
+
+This package is a wrapper around _mysql, which mostly implements the
+MySQL C API.
+
+connect() -- connects to server
+
+See the C API specification and the MySQL documentation for more info
+on other items.
+
+For information on how MySQLdb handles type conversion, see the
+MySQLdb.converters module.
+"""
+
+try:
+    from MySQLdb.release import version_info
+    from . import _mysql
+
+    assert version_info == _mysql.version_info
+except Exception:
+    raise ImportError(
+        "this is MySQLdb version {}, but _mysql is version {!r}\n_mysql: {!r}".format(
+            version_info, _mysql.version_info, _mysql.__file__
+        )
+    )
+
+
+from ._mysql import (
+    NotSupportedError,
+    OperationalError,
+    get_client_info,
+    ProgrammingError,
+    Error,
+    InterfaceError,
+    debug,
+    IntegrityError,
+    string_literal,
+    MySQLError,
+    DataError,
+    escape,
+    escape_string,
+    DatabaseError,
+    InternalError,
+    Warning,
+)
+from MySQLdb.constants import FIELD_TYPE
+from MySQLdb.times import (
+    Date,
+    Time,
+    Timestamp,
+    DateFromTicks,
+    TimeFromTicks,
+    TimestampFromTicks,
+)
+
+try:
+    frozenset
+except NameError:
+    from sets import ImmutableSet as frozenset
+
+threadsafety = 1
+apilevel = "2.0"
+paramstyle = "format"
+
+
+class DBAPISet(frozenset):
+    """A special type of set for which A == x is true if A is a
+    DBAPISet and x is a member of that set."""
+
+    def __eq__(self, other):
+        if isinstance(other, DBAPISet):
+            return not self.difference(other)
+        return other in self
+
+
+STRING = DBAPISet([FIELD_TYPE.ENUM, FIELD_TYPE.STRING, FIELD_TYPE.VAR_STRING])
+BINARY = DBAPISet(
+    [
+        FIELD_TYPE.BLOB,
+        FIELD_TYPE.LONG_BLOB,
+        FIELD_TYPE.MEDIUM_BLOB,
+        FIELD_TYPE.TINY_BLOB,
+    ]
+)
+NUMBER = DBAPISet(
+    [
+        FIELD_TYPE.DECIMAL,
+        FIELD_TYPE.DOUBLE,
+        FIELD_TYPE.FLOAT,
+        FIELD_TYPE.INT24,
+        FIELD_TYPE.LONG,
+        FIELD_TYPE.LONGLONG,
+        FIELD_TYPE.TINY,
+        FIELD_TYPE.YEAR,
+        FIELD_TYPE.NEWDECIMAL,
+    ]
+)
+DATE = DBAPISet([FIELD_TYPE.DATE])
+TIME = DBAPISet([FIELD_TYPE.TIME])
+TIMESTAMP = DBAPISet([FIELD_TYPE.TIMESTAMP, FIELD_TYPE.DATETIME])
+DATETIME = TIMESTAMP
+ROWID = DBAPISet()
+
+
+def test_DBAPISet_set_equality():
+    assert STRING == STRING
+
+
+def test_DBAPISet_set_inequality():
+    assert STRING != NUMBER
+
+
+def test_DBAPISet_set_equality_membership():
+    assert FIELD_TYPE.VAR_STRING == STRING
+
+
+def test_DBAPISet_set_inequality_membership():
+    assert FIELD_TYPE.DATE != STRING
+
+
+def Binary(x):
+    return bytes(x)
+
+
+def Connect(*args, **kwargs):
+    """Factory function for connections.Connection."""
+    from MySQLdb.connections import Connection
+
+    return Connection(*args, **kwargs)
+
+
+connect = Connection = Connect
+
+__all__ = [
+    "BINARY",
+    "Binary",
+    "Connect",
+    "Connection",
+    "DATE",
+    "Date",
+    "Time",
+    "Timestamp",
+    "DateFromTicks",
+    "TimeFromTicks",
+    "TimestampFromTicks",
+    "DataError",
+    "DatabaseError",
+    "Error",
+    "FIELD_TYPE",
+    "IntegrityError",
+    "InterfaceError",
+    "InternalError",
+    "MySQLError",
+    "NUMBER",
+    "NotSupportedError",
+    "DBAPISet",
+    "OperationalError",
+    "ProgrammingError",
+    "ROWID",
+    "STRING",
+    "TIME",
+    "TIMESTAMP",
+    "Warning",
+    "apilevel",
+    "connect",
+    "connections",
+    "constants",
+    "converters",
+    "cursors",
+    "debug",
+    "escape",
+    "escape_string",
+    "get_client_info",
+    "paramstyle",
+    "string_literal",
+    "threadsafety",
+    "version_info",
+]
diff --git a/venv/Lib/site-packages/MySQLdb/_exceptions.py b/venv/Lib/site-packages/MySQLdb/_exceptions.py
index ba35deaf7eea6c3dbf02ced073f7573d6521f77d..d1ec04181b8dce272d2155dc8c01049c19ef42f0 100644
--- a/venv/Lib/site-packages/MySQLdb/_exceptions.py
+++ b/venv/Lib/site-packages/MySQLdb/_exceptions.py
@@ -1,69 +1,69 @@
-"""Exception classes for _mysql and MySQLdb.
-
-These classes are dictated by the DB API v2.0:
-
-    https://www.python.org/dev/peps/pep-0249/
-"""
-
-
-class MySQLError(Exception):
-    """Exception related to operation with MySQL."""
-
-
-class Warning(Warning, MySQLError):
-    """Exception raised for important warnings like data truncations
-    while inserting, etc."""
-
-
-class Error(MySQLError):
-    """Exception that is the base class of all other error exceptions
-    (not Warning)."""
-
-
-class InterfaceError(Error):
-    """Exception raised for errors that are related to the database
-    interface rather than the database itself."""
-
-
-class DatabaseError(Error):
-    """Exception raised for errors that are related to the
-    database."""
-
-
-class DataError(DatabaseError):
-    """Exception raised for errors that are due to problems with the
-    processed data like division by zero, numeric value out of range,
-    etc."""
-
-
-class OperationalError(DatabaseError):
-    """Exception raised for errors that are related to the database's
-    operation and not necessarily under the control of the programmer,
-    e.g. an unexpected disconnect occurs, the data source name is not
-    found, a transaction could not be processed, a memory allocation
-    error occurred during processing, etc."""
-
-
-class IntegrityError(DatabaseError):
-    """Exception raised when the relational integrity of the database
-    is affected, e.g. a foreign key check fails, duplicate key,
-    etc."""
-
-
-class InternalError(DatabaseError):
-    """Exception raised when the database encounters an internal
-    error, e.g. the cursor is not valid anymore, the transaction is
-    out of sync, etc."""
-
-
-class ProgrammingError(DatabaseError):
-    """Exception raised for programming errors, e.g. table not found
-    or already exists, syntax error in the SQL statement, wrong number
-    of parameters specified, etc."""
-
-
-class NotSupportedError(DatabaseError):
-    """Exception raised in case a method or database API was used
-    which is not supported by the database, e.g. requesting a
-    .rollback() on a connection that does not support transaction or
-    has transactions turned off."""
+"""Exception classes for _mysql and MySQLdb.
+
+These classes are dictated by the DB API v2.0:
+
+    https://www.python.org/dev/peps/pep-0249/
+"""
+
+
+class MySQLError(Exception):
+    """Exception related to operation with MySQL."""
+
+
+class Warning(Warning, MySQLError):
+    """Exception raised for important warnings like data truncations
+    while inserting, etc."""
+
+
+class Error(MySQLError):
+    """Exception that is the base class of all other error exceptions
+    (not Warning)."""
+
+
+class InterfaceError(Error):
+    """Exception raised for errors that are related to the database
+    interface rather than the database itself."""
+
+
+class DatabaseError(Error):
+    """Exception raised for errors that are related to the
+    database."""
+
+
+class DataError(DatabaseError):
+    """Exception raised for errors that are due to problems with the
+    processed data like division by zero, numeric value out of range,
+    etc."""
+
+
+class OperationalError(DatabaseError):
+    """Exception raised for errors that are related to the database's
+    operation and not necessarily under the control of the programmer,
+    e.g. an unexpected disconnect occurs, the data source name is not
+    found, a transaction could not be processed, a memory allocation
+    error occurred during processing, etc."""
+
+
+class IntegrityError(DatabaseError):
+    """Exception raised when the relational integrity of the database
+    is affected, e.g. a foreign key check fails, duplicate key,
+    etc."""
+
+
+class InternalError(DatabaseError):
+    """Exception raised when the database encounters an internal
+    error, e.g. the cursor is not valid anymore, the transaction is
+    out of sync, etc."""
+
+
+class ProgrammingError(DatabaseError):
+    """Exception raised for programming errors, e.g. table not found
+    or already exists, syntax error in the SQL statement, wrong number
+    of parameters specified, etc."""
+
+
+class NotSupportedError(DatabaseError):
+    """Exception raised in case a method or database API was used
+    which is not supported by the database, e.g. requesting a
+    .rollback() on a connection that does not support transaction or
+    has transactions turned off."""
diff --git a/venv/Lib/site-packages/MySQLdb/connections.py b/venv/Lib/site-packages/MySQLdb/connections.py
index 8e226ffef2cd1a5f4fe886757d34f6aeee1b5733..884e97d96885c35e2d4ad0dcabce0ba1dfef460c 100644
--- a/venv/Lib/site-packages/MySQLdb/connections.py
+++ b/venv/Lib/site-packages/MySQLdb/connections.py
@@ -1,360 +1,360 @@
-"""
-This module implements connections for MySQLdb. Presently there is
-only one class: Connection. Others are unlikely. However, you might
-want to make your own subclasses. In most cases, you will probably
-override Connection.default_cursor with a non-standard Cursor class.
-"""
-import re
-
-from . import cursors, _mysql
-from ._exceptions import (
-    Warning,
-    Error,
-    InterfaceError,
-    DataError,
-    DatabaseError,
-    OperationalError,
-    IntegrityError,
-    InternalError,
-    NotSupportedError,
-    ProgrammingError,
-)
-
-# Mapping from MySQL charset name to Python codec name
-_charset_to_encoding = {
-    "utf8mb4": "utf8",
-    "utf8mb3": "utf8",
-    "latin1": "cp1252",
-    "koi8r": "koi8_r",
-    "koi8u": "koi8_u",
-}
-
-re_numeric_part = re.compile(r"^(\d+)")
-
-
-def numeric_part(s):
-    """Returns the leading numeric part of a string.
-
-    >>> numeric_part("20-alpha")
-    20
-    >>> numeric_part("foo")
-    >>> numeric_part("16b")
-    16
-    """
-
-    m = re_numeric_part.match(s)
-    if m:
-        return int(m.group(1))
-    return None
-
-
-class Connection(_mysql.connection):
-    """MySQL Database Connection Object"""
-
-    default_cursor = cursors.Cursor
-
-    def __init__(self, *args, **kwargs):
-        """
-        Create a connection to the database. It is strongly recommended
-        that you only use keyword parameters. Consult the MySQL C API
-        documentation for more information.
-
-        :param str host:        host to connect
-        :param str user:        user to connect as
-        :param str password:    password to use
-        :param str passwd:      alias of password, for backward compatibility
-        :param str database:    database to use
-        :param str db:          alias of database, for backward compatibility
-        :param int port:        TCP/IP port to connect to
-        :param str unix_socket: location of unix_socket to use
-        :param dict conv:       conversion dictionary, see MySQLdb.converters
-        :param int connect_timeout:
-            number of seconds to wait before the connection attempt fails.
-
-        :param bool compress:   if set, compression is enabled
-        :param str named_pipe:  if set, a named pipe is used to connect (Windows only)
-        :param str init_command:
-            command which is run once the connection is created
-
-        :param str read_default_file:
-            file from which default client values are read
-
-        :param str read_default_group:
-            configuration group to use from the default file
-
-        :param type cursorclass:
-            class object, used to create cursors (keyword only)
-
-        :param bool use_unicode:
-            If True, text-like columns are returned as unicode objects
-            using the connection's character set. Otherwise, text-like
-            columns are returned as bytes. Unicode objects will always
-            be encoded to the connection's character set regardless of
-            this setting.
-            Default to True.
-
-        :param str charset:
-            If supplied, the connection character set will be changed
-            to this character set.
-
-        :param str auth_plugin:
-            If supplied, the connection default authentication plugin will be
-            changed to this value. Example values:
-            `mysql_native_password` or `caching_sha2_password`
-
-        :param str sql_mode:
-            If supplied, the session SQL mode will be changed to this
-            setting.
-            For more details and legal values, see the MySQL documentation.
-
-        :param int client_flag:
-            flags to use or 0 (see MySQL docs or constants/CLIENTS.py)
-
-        :param str ssl_mode:
-            specify the security settings for connection to the server;
-            see the MySQL documentation for more details
-            (mysql_option(), MYSQL_OPT_SSL_MODE).
-            Only one of 'DISABLED', 'PREFERRED', 'REQUIRED',
-            'VERIFY_CA', 'VERIFY_IDENTITY' can be specified.
-
-        :param dict ssl:
-            dictionary or mapping contains SSL connection parameters;
-            see the MySQL documentation for more details
-            (mysql_ssl_set()).  If this is set, and the client does not
-            support SSL, NotSupportedError will be raised.
-
-        :param bool local_infile:
-            enables LOAD LOCAL INFILE; zero disables
-
-        :param bool autocommit:
-            If False (default), autocommit is disabled.
-            If True, autocommit is enabled.
-            If None, autocommit isn't set and server default is used.
-
-        :param bool binary_prefix:
-            If set, the '_binary' prefix will be used for raw byte query
-            arguments (e.g. Binary). This is disabled by default.
-
-        There are a number of undocumented, non-standard methods. See the
-        documentation for the MySQL C API for some hints on what they do.
-        """
-        from MySQLdb.constants import CLIENT, FIELD_TYPE
-        from MySQLdb.converters import conversions, _bytes_or_str
-        from weakref import proxy
-
-        kwargs2 = kwargs.copy()
-
-        if "database" in kwargs2:
-            kwargs2["db"] = kwargs2.pop("database")
-        if "password" in kwargs2:
-            kwargs2["passwd"] = kwargs2.pop("password")
-
-        if "conv" in kwargs:
-            conv = kwargs["conv"]
-        else:
-            conv = conversions
-
-        conv2 = {}
-        for k, v in conv.items():
-            if isinstance(k, int) and isinstance(v, list):
-                conv2[k] = v[:]
-            else:
-                conv2[k] = v
-        kwargs2["conv"] = conv2
-
-        cursorclass = kwargs2.pop("cursorclass", self.default_cursor)
-        charset = kwargs2.get("charset", "")
-        use_unicode = kwargs2.pop("use_unicode", True)
-        sql_mode = kwargs2.pop("sql_mode", "")
-        self._binary_prefix = kwargs2.pop("binary_prefix", False)
-
-        client_flag = kwargs.get("client_flag", 0)
-        client_version = tuple(
-            [numeric_part(n) for n in _mysql.get_client_info().split(".")[:2]]
-        )
-        if client_version >= (4, 1):
-            client_flag |= CLIENT.MULTI_STATEMENTS
-        if client_version >= (5, 0):
-            client_flag |= CLIENT.MULTI_RESULTS
-
-        kwargs2["client_flag"] = client_flag
-
-        # PEP-249 requires autocommit to be initially off
-        autocommit = kwargs2.pop("autocommit", False)
-
-        super().__init__(*args, **kwargs2)
-        self.cursorclass = cursorclass
-        self.encoders = {k: v for k, v in conv.items() if type(k) is not int}
-
-        # XXX THIS IS GARBAGE: While this is just a garbage and undocumented,
-        # Django 1.11 depends on it.  And they don't fix it because
-        # they are in security-only fix mode.
-        # So keep this garbage for now.  This will be removed in 1.5.
-        # See PyMySQL/mysqlclient-python#306
-        self.encoders[bytes] = bytes
-
-        self._server_version = tuple(
-            [numeric_part(n) for n in self.get_server_info().split(".")[:2]]
-        )
-
-        self.encoding = "ascii"  # overridden in set_character_set()
-        db = proxy(self)
-
-        def unicode_literal(u, dummy=None):
-            return db.string_literal(u.encode(db.encoding))
-
-        if not charset:
-            charset = self.character_set_name()
-        self.set_character_set(charset)
-
-        if sql_mode:
-            self.set_sql_mode(sql_mode)
-
-        if use_unicode:
-            for t in (
-                FIELD_TYPE.STRING,
-                FIELD_TYPE.VAR_STRING,
-                FIELD_TYPE.VARCHAR,
-                FIELD_TYPE.TINY_BLOB,
-                FIELD_TYPE.MEDIUM_BLOB,
-                FIELD_TYPE.LONG_BLOB,
-                FIELD_TYPE.BLOB,
-            ):
-                self.converter[t] = _bytes_or_str
-            # Unlike other string/blob types, JSON is always text.
-            # MySQL may return JSON with charset==binary.
-            self.converter[FIELD_TYPE.JSON] = str
-
-        self.encoders[str] = unicode_literal
-        self._transactional = self.server_capabilities & CLIENT.TRANSACTIONS
-        if self._transactional:
-            if autocommit is not None:
-                self.autocommit(autocommit)
-        self.messages = []
-
-    def __enter__(self):
-        return self
-
-    def __exit__(self, exc_type, exc_value, traceback):
-        self.close()
-
-    def autocommit(self, on):
-        on = bool(on)
-        if self.get_autocommit() != on:
-            _mysql.connection.autocommit(self, on)
-
-    def cursor(self, cursorclass=None):
-        """
-        Create a cursor on which queries may be performed. The
-        optional cursorclass parameter is used to create the
-        Cursor. By default, self.cursorclass=cursors.Cursor is
-        used.
-        """
-        return (cursorclass or self.cursorclass)(self)
-
-    def query(self, query):
-        # Since _mysql releases GIL while querying, we need immutable buffer.
-        if isinstance(query, bytearray):
-            query = bytes(query)
-        _mysql.connection.query(self, query)
-
-    def _bytes_literal(self, bs):
-        assert isinstance(bs, (bytes, bytearray))
-        x = self.string_literal(bs)  # x is escaped and quoted bytes
-        if self._binary_prefix:
-            return b"_binary" + x
-        return x
-
-    def _tuple_literal(self, t):
-        return b"(%s)" % (b",".join(map(self.literal, t)))
-
-    def literal(self, o):
-        """If o is a single object, returns an SQL literal as a string.
-        If o is a non-string sequence, the items of the sequence are
-        converted and returned as a sequence.
-
-        Non-standard. For internal use; do not use this in your
-        applications.
-        """
-        if isinstance(o, str):
-            s = self.string_literal(o.encode(self.encoding))
-        elif isinstance(o, bytearray):
-            s = self._bytes_literal(o)
-        elif isinstance(o, bytes):
-            s = self._bytes_literal(o)
-        elif isinstance(o, (tuple, list)):
-            s = self._tuple_literal(o)
-        else:
-            s = self.escape(o, self.encoders)
-            if isinstance(s, str):
-                s = s.encode(self.encoding)
-        assert isinstance(s, bytes)
-        return s
-
-    def begin(self):
-        """Explicitly begin a connection.
-
-        This method is not used when autocommit=False (default).
-        """
-        self.query(b"BEGIN")
-
-    if not hasattr(_mysql.connection, "warning_count"):
-
-        def warning_count(self):
-            """Return the number of warnings generated from the
-            last query. This is derived from the info() method."""
-            info = self.info()
-            if info:
-                return int(info.split()[-1])
-            else:
-                return 0
-
-    def set_character_set(self, charset):
-        """Set the connection character set to charset. The character
-        set can only be changed in MySQL-4.1 and newer. If you try
-        to change the character set from the current value in an
-        older version, NotSupportedError will be raised."""
-        py_charset = _charset_to_encoding.get(charset, charset)
-        if self.character_set_name() != charset:
-            try:
-                super().set_character_set(charset)
-            except AttributeError:
-                if self._server_version < (4, 1):
-                    raise NotSupportedError("server is too old to set charset")
-                self.query("SET NAMES %s" % charset)
-                self.store_result()
-        self.encoding = py_charset
-
-    def set_sql_mode(self, sql_mode):
-        """Set the connection sql_mode. See MySQL documentation for
-        legal values."""
-        if self._server_version < (4, 1):
-            raise NotSupportedError("server is too old to set sql_mode")
-        self.query("SET SESSION sql_mode='%s'" % sql_mode)
-        self.store_result()
-
-    def show_warnings(self):
-        """Return detailed information about warnings as a
-        sequence of tuples of (Level, Code, Message). This
-        is only supported in MySQL-4.1 and up. If your server
-        is an earlier version, an empty sequence is returned."""
-        if self._server_version < (4, 1):
-            return ()
-        self.query("SHOW WARNINGS")
-        r = self.store_result()
-        warnings = r.fetch_row(0)
-        return warnings
-
-    Warning = Warning
-    Error = Error
-    InterfaceError = InterfaceError
-    DatabaseError = DatabaseError
-    DataError = DataError
-    OperationalError = OperationalError
-    IntegrityError = IntegrityError
-    InternalError = InternalError
-    ProgrammingError = ProgrammingError
-    NotSupportedError = NotSupportedError
-
-
-# vim: colorcolumn=100
+"""
+This module implements connections for MySQLdb. Presently there is
+only one class: Connection. Others are unlikely. However, you might
+want to make your own subclasses. In most cases, you will probably
+override Connection.default_cursor with a non-standard Cursor class.
+"""
+import re
+
+from . import cursors, _mysql
+from ._exceptions import (
+    Warning,
+    Error,
+    InterfaceError,
+    DataError,
+    DatabaseError,
+    OperationalError,
+    IntegrityError,
+    InternalError,
+    NotSupportedError,
+    ProgrammingError,
+)
+
+# Mapping from MySQL charset name to Python codec name
+_charset_to_encoding = {
+    "utf8mb4": "utf8",
+    "utf8mb3": "utf8",
+    "latin1": "cp1252",
+    "koi8r": "koi8_r",
+    "koi8u": "koi8_u",
+}
+
+re_numeric_part = re.compile(r"^(\d+)")
+
+
+def numeric_part(s):
+    """Returns the leading numeric part of a string.
+
+    >>> numeric_part("20-alpha")
+    20
+    >>> numeric_part("foo")
+    >>> numeric_part("16b")
+    16
+    """
+
+    m = re_numeric_part.match(s)
+    if m:
+        return int(m.group(1))
+    return None
+
+
+class Connection(_mysql.connection):
+    """MySQL Database Connection Object"""
+
+    default_cursor = cursors.Cursor
+
+    def __init__(self, *args, **kwargs):
+        """
+        Create a connection to the database. It is strongly recommended
+        that you only use keyword parameters. Consult the MySQL C API
+        documentation for more information.
+
+        :param str host:        host to connect
+        :param str user:        user to connect as
+        :param str password:    password to use
+        :param str passwd:      alias of password, for backward compatibility
+        :param str database:    database to use
+        :param str db:          alias of database, for backward compatibility
+        :param int port:        TCP/IP port to connect to
+        :param str unix_socket: location of unix_socket to use
+        :param dict conv:       conversion dictionary, see MySQLdb.converters
+        :param int connect_timeout:
+            number of seconds to wait before the connection attempt fails.
+
+        :param bool compress:   if set, compression is enabled
+        :param str named_pipe:  if set, a named pipe is used to connect (Windows only)
+        :param str init_command:
+            command which is run once the connection is created
+
+        :param str read_default_file:
+            file from which default client values are read
+
+        :param str read_default_group:
+            configuration group to use from the default file
+
+        :param type cursorclass:
+            class object, used to create cursors (keyword only)
+
+        :param bool use_unicode:
+            If True, text-like columns are returned as unicode objects
+            using the connection's character set. Otherwise, text-like
+            columns are returned as bytes. Unicode objects will always
+            be encoded to the connection's character set regardless of
+            this setting.
+            Default to True.
+
+        :param str charset:
+            If supplied, the connection character set will be changed
+            to this character set.
+
+        :param str auth_plugin:
+            If supplied, the connection default authentication plugin will be
+            changed to this value. Example values:
+            `mysql_native_password` or `caching_sha2_password`
+
+        :param str sql_mode:
+            If supplied, the session SQL mode will be changed to this
+            setting.
+            For more details and legal values, see the MySQL documentation.
+
+        :param int client_flag:
+            flags to use or 0 (see MySQL docs or constants/CLIENTS.py)
+
+        :param str ssl_mode:
+            specify the security settings for connection to the server;
+            see the MySQL documentation for more details
+            (mysql_option(), MYSQL_OPT_SSL_MODE).
+            Only one of 'DISABLED', 'PREFERRED', 'REQUIRED',
+            'VERIFY_CA', 'VERIFY_IDENTITY' can be specified.
+
+        :param dict ssl:
+            dictionary or mapping contains SSL connection parameters;
+            see the MySQL documentation for more details
+            (mysql_ssl_set()).  If this is set, and the client does not
+            support SSL, NotSupportedError will be raised.
+
+        :param bool local_infile:
+            enables LOAD LOCAL INFILE; zero disables
+
+        :param bool autocommit:
+            If False (default), autocommit is disabled.
+            If True, autocommit is enabled.
+            If None, autocommit isn't set and server default is used.
+
+        :param bool binary_prefix:
+            If set, the '_binary' prefix will be used for raw byte query
+            arguments (e.g. Binary). This is disabled by default.
+
+        There are a number of undocumented, non-standard methods. See the
+        documentation for the MySQL C API for some hints on what they do.
+        """
+        from MySQLdb.constants import CLIENT, FIELD_TYPE
+        from MySQLdb.converters import conversions, _bytes_or_str
+        from weakref import proxy
+
+        kwargs2 = kwargs.copy()
+
+        if "database" in kwargs2:
+            kwargs2["db"] = kwargs2.pop("database")
+        if "password" in kwargs2:
+            kwargs2["passwd"] = kwargs2.pop("password")
+
+        if "conv" in kwargs:
+            conv = kwargs["conv"]
+        else:
+            conv = conversions
+
+        conv2 = {}
+        for k, v in conv.items():
+            if isinstance(k, int) and isinstance(v, list):
+                conv2[k] = v[:]
+            else:
+                conv2[k] = v
+        kwargs2["conv"] = conv2
+
+        cursorclass = kwargs2.pop("cursorclass", self.default_cursor)
+        charset = kwargs2.get("charset", "")
+        use_unicode = kwargs2.pop("use_unicode", True)
+        sql_mode = kwargs2.pop("sql_mode", "")
+        self._binary_prefix = kwargs2.pop("binary_prefix", False)
+
+        client_flag = kwargs.get("client_flag", 0)
+        client_version = tuple(
+            [numeric_part(n) for n in _mysql.get_client_info().split(".")[:2]]
+        )
+        if client_version >= (4, 1):
+            client_flag |= CLIENT.MULTI_STATEMENTS
+        if client_version >= (5, 0):
+            client_flag |= CLIENT.MULTI_RESULTS
+
+        kwargs2["client_flag"] = client_flag
+
+        # PEP-249 requires autocommit to be initially off
+        autocommit = kwargs2.pop("autocommit", False)
+
+        super().__init__(*args, **kwargs2)
+        self.cursorclass = cursorclass
+        self.encoders = {k: v for k, v in conv.items() if type(k) is not int}
+
+        # XXX THIS IS GARBAGE: While this is just a garbage and undocumented,
+        # Django 1.11 depends on it.  And they don't fix it because
+        # they are in security-only fix mode.
+        # So keep this garbage for now.  This will be removed in 1.5.
+        # See PyMySQL/mysqlclient-python#306
+        self.encoders[bytes] = bytes
+
+        self._server_version = tuple(
+            [numeric_part(n) for n in self.get_server_info().split(".")[:2]]
+        )
+
+        self.encoding = "ascii"  # overridden in set_character_set()
+        db = proxy(self)
+
+        def unicode_literal(u, dummy=None):
+            return db.string_literal(u.encode(db.encoding))
+
+        if not charset:
+            charset = self.character_set_name()
+        self.set_character_set(charset)
+
+        if sql_mode:
+            self.set_sql_mode(sql_mode)
+
+        if use_unicode:
+            for t in (
+                FIELD_TYPE.STRING,
+                FIELD_TYPE.VAR_STRING,
+                FIELD_TYPE.VARCHAR,
+                FIELD_TYPE.TINY_BLOB,
+                FIELD_TYPE.MEDIUM_BLOB,
+                FIELD_TYPE.LONG_BLOB,
+                FIELD_TYPE.BLOB,
+            ):
+                self.converter[t] = _bytes_or_str
+            # Unlike other string/blob types, JSON is always text.
+            # MySQL may return JSON with charset==binary.
+            self.converter[FIELD_TYPE.JSON] = str
+
+        self.encoders[str] = unicode_literal
+        self._transactional = self.server_capabilities & CLIENT.TRANSACTIONS
+        if self._transactional:
+            if autocommit is not None:
+                self.autocommit(autocommit)
+        self.messages = []
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, exc_type, exc_value, traceback):
+        self.close()
+
+    def autocommit(self, on):
+        on = bool(on)
+        if self.get_autocommit() != on:
+            _mysql.connection.autocommit(self, on)
+
+    def cursor(self, cursorclass=None):
+        """
+        Create a cursor on which queries may be performed. The
+        optional cursorclass parameter is used to create the
+        Cursor. By default, self.cursorclass=cursors.Cursor is
+        used.
+        """
+        return (cursorclass or self.cursorclass)(self)
+
+    def query(self, query):
+        # Since _mysql releases GIL while querying, we need immutable buffer.
+        if isinstance(query, bytearray):
+            query = bytes(query)
+        _mysql.connection.query(self, query)
+
+    def _bytes_literal(self, bs):
+        assert isinstance(bs, (bytes, bytearray))
+        x = self.string_literal(bs)  # x is escaped and quoted bytes
+        if self._binary_prefix:
+            return b"_binary" + x
+        return x
+
+    def _tuple_literal(self, t):
+        return b"(%s)" % (b",".join(map(self.literal, t)))
+
+    def literal(self, o):
+        """If o is a single object, returns an SQL literal as a string.
+        If o is a non-string sequence, the items of the sequence are
+        converted and returned as a sequence.
+
+        Non-standard. For internal use; do not use this in your
+        applications.
+        """
+        if isinstance(o, str):
+            s = self.string_literal(o.encode(self.encoding))
+        elif isinstance(o, bytearray):
+            s = self._bytes_literal(o)
+        elif isinstance(o, bytes):
+            s = self._bytes_literal(o)
+        elif isinstance(o, (tuple, list)):
+            s = self._tuple_literal(o)
+        else:
+            s = self.escape(o, self.encoders)
+            if isinstance(s, str):
+                s = s.encode(self.encoding)
+        assert isinstance(s, bytes)
+        return s
+
+    def begin(self):
+        """Explicitly begin a connection.
+
+        This method is not used when autocommit=False (default).
+        """
+        self.query(b"BEGIN")
+
+    if not hasattr(_mysql.connection, "warning_count"):
+
+        def warning_count(self):
+            """Return the number of warnings generated from the
+            last query. This is derived from the info() method."""
+            info = self.info()
+            if info:
+                return int(info.split()[-1])
+            else:
+                return 0
+
+    def set_character_set(self, charset):
+        """Set the connection character set to charset. The character
+        set can only be changed in MySQL-4.1 and newer. If you try
+        to change the character set from the current value in an
+        older version, NotSupportedError will be raised."""
+        py_charset = _charset_to_encoding.get(charset, charset)
+        if self.character_set_name() != charset:
+            try:
+                super().set_character_set(charset)
+            except AttributeError:
+                if self._server_version < (4, 1):
+                    raise NotSupportedError("server is too old to set charset")
+                self.query("SET NAMES %s" % charset)
+                self.store_result()
+        self.encoding = py_charset
+
+    def set_sql_mode(self, sql_mode):
+        """Set the connection sql_mode. See MySQL documentation for
+        legal values."""
+        if self._server_version < (4, 1):
+            raise NotSupportedError("server is too old to set sql_mode")
+        self.query("SET SESSION sql_mode='%s'" % sql_mode)
+        self.store_result()
+
+    def show_warnings(self):
+        """Return detailed information about warnings as a
+        sequence of tuples of (Level, Code, Message). This
+        is only supported in MySQL-4.1 and up. If your server
+        is an earlier version, an empty sequence is returned."""
+        if self._server_version < (4, 1):
+            return ()
+        self.query("SHOW WARNINGS")
+        r = self.store_result()
+        warnings = r.fetch_row(0)
+        return warnings
+
+    Warning = Warning
+    Error = Error
+    InterfaceError = InterfaceError
+    DatabaseError = DatabaseError
+    DataError = DataError
+    OperationalError = OperationalError
+    IntegrityError = IntegrityError
+    InternalError = InternalError
+    ProgrammingError = ProgrammingError
+    NotSupportedError = NotSupportedError
+
+
+# vim: colorcolumn=100
diff --git a/venv/Lib/site-packages/MySQLdb/constants/CLIENT.py b/venv/Lib/site-packages/MySQLdb/constants/CLIENT.py
index 35f578ccfaf0e04019ac38ea76a7c6a225dad264..66f28ff933d1acc78f356784a86e49fb1c534e8c 100644
--- a/venv/Lib/site-packages/MySQLdb/constants/CLIENT.py
+++ b/venv/Lib/site-packages/MySQLdb/constants/CLIENT.py
@@ -1,27 +1,27 @@
-"""MySQL CLIENT constants
-
-These constants are used when creating the connection. Use bitwise-OR
-(|) to combine options together, and pass them as the client_flags
-parameter to MySQLdb.Connection. For more information on these flags,
-see the MySQL C API documentation for mysql_real_connect().
-
-"""
-
-LONG_PASSWORD = 1
-FOUND_ROWS = 2
-LONG_FLAG = 4
-CONNECT_WITH_DB = 8
-NO_SCHEMA = 16
-COMPRESS = 32
-ODBC = 64
-LOCAL_FILES = 128
-IGNORE_SPACE = 256
-CHANGE_USER = 512
-INTERACTIVE = 1024
-SSL = 2048
-IGNORE_SIGPIPE = 4096
-TRANSACTIONS = 8192  # mysql_com.h was WRONG prior to 3.23.35
-RESERVED = 16384
-SECURE_CONNECTION = 32768
-MULTI_STATEMENTS = 65536
-MULTI_RESULTS = 131072
+"""MySQL CLIENT constants
+
+These constants are used when creating the connection. Use bitwise-OR
+(|) to combine options together, and pass them as the client_flags
+parameter to MySQLdb.Connection. For more information on these flags,
+see the MySQL C API documentation for mysql_real_connect().
+
+"""
+
+LONG_PASSWORD = 1
+FOUND_ROWS = 2
+LONG_FLAG = 4
+CONNECT_WITH_DB = 8
+NO_SCHEMA = 16
+COMPRESS = 32
+ODBC = 64
+LOCAL_FILES = 128
+IGNORE_SPACE = 256
+CHANGE_USER = 512
+INTERACTIVE = 1024
+SSL = 2048
+IGNORE_SIGPIPE = 4096
+TRANSACTIONS = 8192  # mysql_com.h was WRONG prior to 3.23.35
+RESERVED = 16384
+SECURE_CONNECTION = 32768
+MULTI_STATEMENTS = 65536
+MULTI_RESULTS = 131072
diff --git a/venv/Lib/site-packages/MySQLdb/constants/CR.py b/venv/Lib/site-packages/MySQLdb/constants/CR.py
index 9d33cf65484d40a04328733b8879aaffbd390c3c..029056f4693e44f3439a4f8d57f3c73b9f46aaf4 100644
--- a/venv/Lib/site-packages/MySQLdb/constants/CR.py
+++ b/venv/Lib/site-packages/MySQLdb/constants/CR.py
@@ -1,105 +1,105 @@
-"""MySQL Connection Errors
-
-Nearly all of these raise OperationalError. COMMANDS_OUT_OF_SYNC
-raises ProgrammingError.
-
-"""
-
-if __name__ == "__main__":
-    """
-    Usage: python CR.py [/path/to/mysql/errmsg.h ...] >> CR.py
-    """
-    import fileinput
-    import re
-
-    data = {}
-    error_last = None
-    for line in fileinput.input():
-        line = re.sub(r"/\*.*?\*/", "", line)
-        m = re.match(r"^\s*#define\s+CR_([A-Z0-9_]+)\s+(\d+)(\s.*|$)", line)
-        if m:
-            name = m.group(1)
-            value = int(m.group(2))
-            if name == "ERROR_LAST":
-                if error_last is None or error_last < value:
-                    error_last = value
-                continue
-            if value not in data:
-                data[value] = set()
-            data[value].add(name)
-    for value, names in sorted(data.items()):
-        for name in sorted(names):
-            print("{} = {}".format(name, value))
-    if error_last is not None:
-        print("ERROR_LAST = %s" % error_last)
-
-
-ERROR_FIRST = 2000
-MIN_ERROR = 2000
-UNKNOWN_ERROR = 2000
-SOCKET_CREATE_ERROR = 2001
-CONNECTION_ERROR = 2002
-CONN_HOST_ERROR = 2003
-IPSOCK_ERROR = 2004
-UNKNOWN_HOST = 2005
-SERVER_GONE_ERROR = 2006
-VERSION_ERROR = 2007
-OUT_OF_MEMORY = 2008
-WRONG_HOST_INFO = 2009
-LOCALHOST_CONNECTION = 2010
-TCP_CONNECTION = 2011
-SERVER_HANDSHAKE_ERR = 2012
-SERVER_LOST = 2013
-COMMANDS_OUT_OF_SYNC = 2014
-NAMEDPIPE_CONNECTION = 2015
-NAMEDPIPEWAIT_ERROR = 2016
-NAMEDPIPEOPEN_ERROR = 2017
-NAMEDPIPESETSTATE_ERROR = 2018
-CANT_READ_CHARSET = 2019
-NET_PACKET_TOO_LARGE = 2020
-EMBEDDED_CONNECTION = 2021
-PROBE_SLAVE_STATUS = 2022
-PROBE_SLAVE_HOSTS = 2023
-PROBE_SLAVE_CONNECT = 2024
-PROBE_MASTER_CONNECT = 2025
-SSL_CONNECTION_ERROR = 2026
-MALFORMED_PACKET = 2027
-WRONG_LICENSE = 2028
-NULL_POINTER = 2029
-NO_PREPARE_STMT = 2030
-PARAMS_NOT_BOUND = 2031
-DATA_TRUNCATED = 2032
-NO_PARAMETERS_EXISTS = 2033
-INVALID_PARAMETER_NO = 2034
-INVALID_BUFFER_USE = 2035
-UNSUPPORTED_PARAM_TYPE = 2036
-SHARED_MEMORY_CONNECTION = 2037
-SHARED_MEMORY_CONNECT_REQUEST_ERROR = 2038
-SHARED_MEMORY_CONNECT_ANSWER_ERROR = 2039
-SHARED_MEMORY_CONNECT_FILE_MAP_ERROR = 2040
-SHARED_MEMORY_CONNECT_MAP_ERROR = 2041
-SHARED_MEMORY_FILE_MAP_ERROR = 2042
-SHARED_MEMORY_MAP_ERROR = 2043
-SHARED_MEMORY_EVENT_ERROR = 2044
-SHARED_MEMORY_CONNECT_ABANDONED_ERROR = 2045
-SHARED_MEMORY_CONNECT_SET_ERROR = 2046
-CONN_UNKNOW_PROTOCOL = 2047
-INVALID_CONN_HANDLE = 2048
-UNUSED_1 = 2049
-FETCH_CANCELED = 2050
-NO_DATA = 2051
-NO_STMT_METADATA = 2052
-NO_RESULT_SET = 2053
-NOT_IMPLEMENTED = 2054
-SERVER_LOST_EXTENDED = 2055
-STMT_CLOSED = 2056
-NEW_STMT_METADATA = 2057
-ALREADY_CONNECTED = 2058
-AUTH_PLUGIN_CANNOT_LOAD = 2059
-DUPLICATE_CONNECTION_ATTR = 2060
-AUTH_PLUGIN_ERR = 2061
-INSECURE_API_ERR = 2062
-FILE_NAME_TOO_LONG = 2063
-SSL_FIPS_MODE_ERR = 2064
-MAX_ERROR = 2999
-ERROR_LAST = 2064
+"""MySQL Connection Errors
+
+Nearly all of these raise OperationalError. COMMANDS_OUT_OF_SYNC
+raises ProgrammingError.
+
+"""
+
+if __name__ == "__main__":
+    """
+    Usage: python CR.py [/path/to/mysql/errmsg.h ...] >> CR.py
+    """
+    import fileinput
+    import re
+
+    data = {}
+    error_last = None
+    for line in fileinput.input():
+        line = re.sub(r"/\*.*?\*/", "", line)
+        m = re.match(r"^\s*#define\s+CR_([A-Z0-9_]+)\s+(\d+)(\s.*|$)", line)
+        if m:
+            name = m.group(1)
+            value = int(m.group(2))
+            if name == "ERROR_LAST":
+                if error_last is None or error_last < value:
+                    error_last = value
+                continue
+            if value not in data:
+                data[value] = set()
+            data[value].add(name)
+    for value, names in sorted(data.items()):
+        for name in sorted(names):
+            print("{} = {}".format(name, value))
+    if error_last is not None:
+        print("ERROR_LAST = %s" % error_last)
+
+
+ERROR_FIRST = 2000
+MIN_ERROR = 2000
+UNKNOWN_ERROR = 2000
+SOCKET_CREATE_ERROR = 2001
+CONNECTION_ERROR = 2002
+CONN_HOST_ERROR = 2003
+IPSOCK_ERROR = 2004
+UNKNOWN_HOST = 2005
+SERVER_GONE_ERROR = 2006
+VERSION_ERROR = 2007
+OUT_OF_MEMORY = 2008
+WRONG_HOST_INFO = 2009
+LOCALHOST_CONNECTION = 2010
+TCP_CONNECTION = 2011
+SERVER_HANDSHAKE_ERR = 2012
+SERVER_LOST = 2013
+COMMANDS_OUT_OF_SYNC = 2014
+NAMEDPIPE_CONNECTION = 2015
+NAMEDPIPEWAIT_ERROR = 2016
+NAMEDPIPEOPEN_ERROR = 2017
+NAMEDPIPESETSTATE_ERROR = 2018
+CANT_READ_CHARSET = 2019
+NET_PACKET_TOO_LARGE = 2020
+EMBEDDED_CONNECTION = 2021
+PROBE_SLAVE_STATUS = 2022
+PROBE_SLAVE_HOSTS = 2023
+PROBE_SLAVE_CONNECT = 2024
+PROBE_MASTER_CONNECT = 2025
+SSL_CONNECTION_ERROR = 2026
+MALFORMED_PACKET = 2027
+WRONG_LICENSE = 2028
+NULL_POINTER = 2029
+NO_PREPARE_STMT = 2030
+PARAMS_NOT_BOUND = 2031
+DATA_TRUNCATED = 2032
+NO_PARAMETERS_EXISTS = 2033
+INVALID_PARAMETER_NO = 2034
+INVALID_BUFFER_USE = 2035
+UNSUPPORTED_PARAM_TYPE = 2036
+SHARED_MEMORY_CONNECTION = 2037
+SHARED_MEMORY_CONNECT_REQUEST_ERROR = 2038
+SHARED_MEMORY_CONNECT_ANSWER_ERROR = 2039
+SHARED_MEMORY_CONNECT_FILE_MAP_ERROR = 2040
+SHARED_MEMORY_CONNECT_MAP_ERROR = 2041
+SHARED_MEMORY_FILE_MAP_ERROR = 2042
+SHARED_MEMORY_MAP_ERROR = 2043
+SHARED_MEMORY_EVENT_ERROR = 2044
+SHARED_MEMORY_CONNECT_ABANDONED_ERROR = 2045
+SHARED_MEMORY_CONNECT_SET_ERROR = 2046
+CONN_UNKNOW_PROTOCOL = 2047
+INVALID_CONN_HANDLE = 2048
+UNUSED_1 = 2049
+FETCH_CANCELED = 2050
+NO_DATA = 2051
+NO_STMT_METADATA = 2052
+NO_RESULT_SET = 2053
+NOT_IMPLEMENTED = 2054
+SERVER_LOST_EXTENDED = 2055
+STMT_CLOSED = 2056
+NEW_STMT_METADATA = 2057
+ALREADY_CONNECTED = 2058
+AUTH_PLUGIN_CANNOT_LOAD = 2059
+DUPLICATE_CONNECTION_ATTR = 2060
+AUTH_PLUGIN_ERR = 2061
+INSECURE_API_ERR = 2062
+FILE_NAME_TOO_LONG = 2063
+SSL_FIPS_MODE_ERR = 2064
+MAX_ERROR = 2999
+ERROR_LAST = 2064
diff --git a/venv/Lib/site-packages/MySQLdb/constants/ER.py b/venv/Lib/site-packages/MySQLdb/constants/ER.py
index fcd5bf2eedd355aabaa4378e6b3f2a8ac9ae931d..2fad0e89521e2602ba7bd1313bea013d3d78e5c8 100644
--- a/venv/Lib/site-packages/MySQLdb/constants/ER.py
+++ b/venv/Lib/site-packages/MySQLdb/constants/ER.py
@@ -1,827 +1,827 @@
-"""MySQL ER Constants
-
-These constants are error codes for the bulk of the error conditions
-that may occur.
-"""
-
-if __name__ == "__main__":
-    """
-    Usage: python ER.py [/path/to/mysql/mysqld_error.h ...] >> ER.py
-    """
-    import fileinput
-    import re
-
-    data = {}
-    error_last = None
-    for line in fileinput.input():
-        line = re.sub(r"/\*.*?\*/", "", line)
-        m = re.match(r"^\s*#define\s+((ER|WARN)_[A-Z0-9_]+)\s+(\d+)\s*", line)
-        if m:
-            name = m.group(1)
-            if name.startswith("ER_"):
-                name = name[3:]
-            value = int(m.group(3))
-            if name == "ERROR_LAST":
-                if error_last is None or error_last < value:
-                    error_last = value
-                continue
-            if value not in data:
-                data[value] = set()
-            data[value].add(name)
-    for value, names in sorted(data.items()):
-        for name in sorted(names):
-            print("{} = {}".format(name, value))
-    if error_last is not None:
-        print("ERROR_LAST = %s" % error_last)
-
-
-ERROR_FIRST = 1000
-NO = 1002
-YES = 1003
-CANT_CREATE_FILE = 1004
-CANT_CREATE_TABLE = 1005
-CANT_CREATE_DB = 1006
-DB_CREATE_EXISTS = 1007
-DB_DROP_EXISTS = 1008
-DB_DROP_RMDIR = 1010
-CANT_FIND_SYSTEM_REC = 1012
-CANT_GET_STAT = 1013
-CANT_LOCK = 1015
-CANT_OPEN_FILE = 1016
-FILE_NOT_FOUND = 1017
-CANT_READ_DIR = 1018
-CHECKREAD = 1020
-DUP_KEY = 1022
-ERROR_ON_READ = 1024
-ERROR_ON_RENAME = 1025
-ERROR_ON_WRITE = 1026
-FILE_USED = 1027
-FILSORT_ABORT = 1028
-GET_ERRNO = 1030
-ILLEGAL_HA = 1031
-KEY_NOT_FOUND = 1032
-NOT_FORM_FILE = 1033
-NOT_KEYFILE = 1034
-OLD_KEYFILE = 1035
-OPEN_AS_READONLY = 1036
-OUTOFMEMORY = 1037
-OUT_OF_SORTMEMORY = 1038
-CON_COUNT_ERROR = 1040
-OUT_OF_RESOURCES = 1041
-BAD_HOST_ERROR = 1042
-HANDSHAKE_ERROR = 1043
-DBACCESS_DENIED_ERROR = 1044
-ACCESS_DENIED_ERROR = 1045
-NO_DB_ERROR = 1046
-UNKNOWN_COM_ERROR = 1047
-BAD_NULL_ERROR = 1048
-BAD_DB_ERROR = 1049
-TABLE_EXISTS_ERROR = 1050
-BAD_TABLE_ERROR = 1051
-NON_UNIQ_ERROR = 1052
-SERVER_SHUTDOWN = 1053
-BAD_FIELD_ERROR = 1054
-WRONG_FIELD_WITH_GROUP = 1055
-WRONG_GROUP_FIELD = 1056
-WRONG_SUM_SELECT = 1057
-WRONG_VALUE_COUNT = 1058
-TOO_LONG_IDENT = 1059
-DUP_FIELDNAME = 1060
-DUP_KEYNAME = 1061
-DUP_ENTRY = 1062
-WRONG_FIELD_SPEC = 1063
-PARSE_ERROR = 1064
-EMPTY_QUERY = 1065
-NONUNIQ_TABLE = 1066
-INVALID_DEFAULT = 1067
-MULTIPLE_PRI_KEY = 1068
-TOO_MANY_KEYS = 1069
-TOO_MANY_KEY_PARTS = 1070
-TOO_LONG_KEY = 1071
-KEY_COLUMN_DOES_NOT_EXITS = 1072
-BLOB_USED_AS_KEY = 1073
-TOO_BIG_FIELDLENGTH = 1074
-WRONG_AUTO_KEY = 1075
-READY = 1076
-SHUTDOWN_COMPLETE = 1079
-FORCING_CLOSE = 1080
-IPSOCK_ERROR = 1081
-NO_SUCH_INDEX = 1082
-WRONG_FIELD_TERMINATORS = 1083
-BLOBS_AND_NO_TERMINATED = 1084
-TEXTFILE_NOT_READABLE = 1085
-FILE_EXISTS_ERROR = 1086
-LOAD_INFO = 1087
-ALTER_INFO = 1088
-WRONG_SUB_KEY = 1089
-CANT_REMOVE_ALL_FIELDS = 1090
-CANT_DROP_FIELD_OR_KEY = 1091
-INSERT_INFO = 1092
-UPDATE_TABLE_USED = 1093
-NO_SUCH_THREAD = 1094
-KILL_DENIED_ERROR = 1095
-NO_TABLES_USED = 1096
-TOO_BIG_SET = 1097
-NO_UNIQUE_LOGFILE = 1098
-TABLE_NOT_LOCKED_FOR_WRITE = 1099
-TABLE_NOT_LOCKED = 1100
-BLOB_CANT_HAVE_DEFAULT = 1101
-WRONG_DB_NAME = 1102
-WRONG_TABLE_NAME = 1103
-TOO_BIG_SELECT = 1104
-UNKNOWN_ERROR = 1105
-UNKNOWN_PROCEDURE = 1106
-WRONG_PARAMCOUNT_TO_PROCEDURE = 1107
-WRONG_PARAMETERS_TO_PROCEDURE = 1108
-UNKNOWN_TABLE = 1109
-FIELD_SPECIFIED_TWICE = 1110
-INVALID_GROUP_FUNC_USE = 1111
-UNSUPPORTED_EXTENSION = 1112
-TABLE_MUST_HAVE_COLUMNS = 1113
-RECORD_FILE_FULL = 1114
-UNKNOWN_CHARACTER_SET = 1115
-TOO_MANY_TABLES = 1116
-TOO_MANY_FIELDS = 1117
-TOO_BIG_ROWSIZE = 1118
-STACK_OVERRUN = 1119
-WRONG_OUTER_JOIN_UNUSED = 1120
-NULL_COLUMN_IN_INDEX = 1121
-CANT_FIND_UDF = 1122
-CANT_INITIALIZE_UDF = 1123
-UDF_NO_PATHS = 1124
-UDF_EXISTS = 1125
-CANT_OPEN_LIBRARY = 1126
-CANT_FIND_DL_ENTRY = 1127
-FUNCTION_NOT_DEFINED = 1128
-HOST_IS_BLOCKED = 1129
-HOST_NOT_PRIVILEGED = 1130
-PASSWORD_ANONYMOUS_USER = 1131
-PASSWORD_NOT_ALLOWED = 1132
-PASSWORD_NO_MATCH = 1133
-UPDATE_INFO = 1134
-CANT_CREATE_THREAD = 1135
-WRONG_VALUE_COUNT_ON_ROW = 1136
-CANT_REOPEN_TABLE = 1137
-INVALID_USE_OF_NULL = 1138
-REGEXP_ERROR = 1139
-MIX_OF_GROUP_FUNC_AND_FIELDS = 1140
-NONEXISTING_GRANT = 1141
-TABLEACCESS_DENIED_ERROR = 1142
-COLUMNACCESS_DENIED_ERROR = 1143
-ILLEGAL_GRANT_FOR_TABLE = 1144
-GRANT_WRONG_HOST_OR_USER = 1145
-NO_SUCH_TABLE = 1146
-NONEXISTING_TABLE_GRANT = 1147
-NOT_ALLOWED_COMMAND = 1148
-SYNTAX_ERROR = 1149
-ABORTING_CONNECTION = 1152
-NET_PACKET_TOO_LARGE = 1153
-NET_READ_ERROR_FROM_PIPE = 1154
-NET_FCNTL_ERROR = 1155
-NET_PACKETS_OUT_OF_ORDER = 1156
-NET_UNCOMPRESS_ERROR = 1157
-NET_READ_ERROR = 1158
-NET_READ_INTERRUPTED = 1159
-NET_ERROR_ON_WRITE = 1160
-NET_WRITE_INTERRUPTED = 1161
-TOO_LONG_STRING = 1162
-TABLE_CANT_HANDLE_BLOB = 1163
-TABLE_CANT_HANDLE_AUTO_INCREMENT = 1164
-WRONG_COLUMN_NAME = 1166
-WRONG_KEY_COLUMN = 1167
-WRONG_MRG_TABLE = 1168
-DUP_UNIQUE = 1169
-BLOB_KEY_WITHOUT_LENGTH = 1170
-PRIMARY_CANT_HAVE_NULL = 1171
-TOO_MANY_ROWS = 1172
-REQUIRES_PRIMARY_KEY = 1173
-UPDATE_WITHOUT_KEY_IN_SAFE_MODE = 1175
-KEY_DOES_NOT_EXITS = 1176
-CHECK_NO_SUCH_TABLE = 1177
-CHECK_NOT_IMPLEMENTED = 1178
-CANT_DO_THIS_DURING_AN_TRANSACTION = 1179
-ERROR_DURING_COMMIT = 1180
-ERROR_DURING_ROLLBACK = 1181
-ERROR_DURING_FLUSH_LOGS = 1182
-NEW_ABORTING_CONNECTION = 1184
-MASTER = 1188
-MASTER_NET_READ = 1189
-MASTER_NET_WRITE = 1190
-FT_MATCHING_KEY_NOT_FOUND = 1191
-LOCK_OR_ACTIVE_TRANSACTION = 1192
-UNKNOWN_SYSTEM_VARIABLE = 1193
-CRASHED_ON_USAGE = 1194
-CRASHED_ON_REPAIR = 1195
-WARNING_NOT_COMPLETE_ROLLBACK = 1196
-TRANS_CACHE_FULL = 1197
-SLAVE_NOT_RUNNING = 1199
-BAD_SLAVE = 1200
-MASTER_INFO = 1201
-SLAVE_THREAD = 1202
-TOO_MANY_USER_CONNECTIONS = 1203
-SET_CONSTANTS_ONLY = 1204
-LOCK_WAIT_TIMEOUT = 1205
-LOCK_TABLE_FULL = 1206
-READ_ONLY_TRANSACTION = 1207
-WRONG_ARGUMENTS = 1210
-NO_PERMISSION_TO_CREATE_USER = 1211
-LOCK_DEADLOCK = 1213
-TABLE_CANT_HANDLE_FT = 1214
-CANNOT_ADD_FOREIGN = 1215
-NO_REFERENCED_ROW = 1216
-ROW_IS_REFERENCED = 1217
-CONNECT_TO_MASTER = 1218
-ERROR_WHEN_EXECUTING_COMMAND = 1220
-WRONG_USAGE = 1221
-WRONG_NUMBER_OF_COLUMNS_IN_SELECT = 1222
-CANT_UPDATE_WITH_READLOCK = 1223
-MIXING_NOT_ALLOWED = 1224
-DUP_ARGUMENT = 1225
-USER_LIMIT_REACHED = 1226
-SPECIFIC_ACCESS_DENIED_ERROR = 1227
-LOCAL_VARIABLE = 1228
-GLOBAL_VARIABLE = 1229
-NO_DEFAULT = 1230
-WRONG_VALUE_FOR_VAR = 1231
-WRONG_TYPE_FOR_VAR = 1232
-VAR_CANT_BE_READ = 1233
-CANT_USE_OPTION_HERE = 1234
-NOT_SUPPORTED_YET = 1235
-MASTER_FATAL_ERROR_READING_BINLOG = 1236
-SLAVE_IGNORED_TABLE = 1237
-INCORRECT_GLOBAL_LOCAL_VAR = 1238
-WRONG_FK_DEF = 1239
-KEY_REF_DO_NOT_MATCH_TABLE_REF = 1240
-OPERAND_COLUMNS = 1241
-SUBQUERY_NO_1_ROW = 1242
-UNKNOWN_STMT_HANDLER = 1243
-CORRUPT_HELP_DB = 1244
-AUTO_CONVERT = 1246
-ILLEGAL_REFERENCE = 1247
-DERIVED_MUST_HAVE_ALIAS = 1248
-SELECT_REDUCED = 1249
-TABLENAME_NOT_ALLOWED_HERE = 1250
-NOT_SUPPORTED_AUTH_MODE = 1251
-SPATIAL_CANT_HAVE_NULL = 1252
-COLLATION_CHARSET_MISMATCH = 1253
-TOO_BIG_FOR_UNCOMPRESS = 1256
-ZLIB_Z_MEM_ERROR = 1257
-ZLIB_Z_BUF_ERROR = 1258
-ZLIB_Z_DATA_ERROR = 1259
-CUT_VALUE_GROUP_CONCAT = 1260
-WARN_TOO_FEW_RECORDS = 1261
-WARN_TOO_MANY_RECORDS = 1262
-WARN_NULL_TO_NOTNULL = 1263
-WARN_DATA_OUT_OF_RANGE = 1264
-WARN_DATA_TRUNCATED = 1265
-WARN_USING_OTHER_HANDLER = 1266
-CANT_AGGREGATE_2COLLATIONS = 1267
-REVOKE_GRANTS = 1269
-CANT_AGGREGATE_3COLLATIONS = 1270
-CANT_AGGREGATE_NCOLLATIONS = 1271
-VARIABLE_IS_NOT_STRUCT = 1272
-UNKNOWN_COLLATION = 1273
-SLAVE_IGNORED_SSL_PARAMS = 1274
-SERVER_IS_IN_SECURE_AUTH_MODE = 1275
-WARN_FIELD_RESOLVED = 1276
-BAD_SLAVE_UNTIL_COND = 1277
-MISSING_SKIP_SLAVE = 1278
-UNTIL_COND_IGNORED = 1279
-WRONG_NAME_FOR_INDEX = 1280
-WRONG_NAME_FOR_CATALOG = 1281
-BAD_FT_COLUMN = 1283
-UNKNOWN_KEY_CACHE = 1284
-WARN_HOSTNAME_WONT_WORK = 1285
-UNKNOWN_STORAGE_ENGINE = 1286
-WARN_DEPRECATED_SYNTAX = 1287
-NON_UPDATABLE_TABLE = 1288
-FEATURE_DISABLED = 1289
-OPTION_PREVENTS_STATEMENT = 1290
-DUPLICATED_VALUE_IN_TYPE = 1291
-TRUNCATED_WRONG_VALUE = 1292
-INVALID_ON_UPDATE = 1294
-UNSUPPORTED_PS = 1295
-GET_ERRMSG = 1296
-GET_TEMPORARY_ERRMSG = 1297
-UNKNOWN_TIME_ZONE = 1298
-WARN_INVALID_TIMESTAMP = 1299
-INVALID_CHARACTER_STRING = 1300
-WARN_ALLOWED_PACKET_OVERFLOWED = 1301
-CONFLICTING_DECLARATIONS = 1302
-SP_NO_RECURSIVE_CREATE = 1303
-SP_ALREADY_EXISTS = 1304
-SP_DOES_NOT_EXIST = 1305
-SP_DROP_FAILED = 1306
-SP_STORE_FAILED = 1307
-SP_LILABEL_MISMATCH = 1308
-SP_LABEL_REDEFINE = 1309
-SP_LABEL_MISMATCH = 1310
-SP_UNINIT_VAR = 1311
-SP_BADSELECT = 1312
-SP_BADRETURN = 1313
-SP_BADSTATEMENT = 1314
-UPDATE_LOG_DEPRECATED_IGNORED = 1315
-UPDATE_LOG_DEPRECATED_TRANSLATED = 1316
-QUERY_INTERRUPTED = 1317
-SP_WRONG_NO_OF_ARGS = 1318
-SP_COND_MISMATCH = 1319
-SP_NORETURN = 1320
-SP_NORETURNEND = 1321
-SP_BAD_CURSOR_QUERY = 1322
-SP_BAD_CURSOR_SELECT = 1323
-SP_CURSOR_MISMATCH = 1324
-SP_CURSOR_ALREADY_OPEN = 1325
-SP_CURSOR_NOT_OPEN = 1326
-SP_UNDECLARED_VAR = 1327
-SP_WRONG_NO_OF_FETCH_ARGS = 1328
-SP_FETCH_NO_DATA = 1329
-SP_DUP_PARAM = 1330
-SP_DUP_VAR = 1331
-SP_DUP_COND = 1332
-SP_DUP_CURS = 1333
-SP_CANT_ALTER = 1334
-SP_SUBSELECT_NYI = 1335
-STMT_NOT_ALLOWED_IN_SF_OR_TRG = 1336
-SP_VARCOND_AFTER_CURSHNDLR = 1337
-SP_CURSOR_AFTER_HANDLER = 1338
-SP_CASE_NOT_FOUND = 1339
-FPARSER_TOO_BIG_FILE = 1340
-FPARSER_BAD_HEADER = 1341
-FPARSER_EOF_IN_COMMENT = 1342
-FPARSER_ERROR_IN_PARAMETER = 1343
-FPARSER_EOF_IN_UNKNOWN_PARAMETER = 1344
-VIEW_NO_EXPLAIN = 1345
-WRONG_OBJECT = 1347
-NONUPDATEABLE_COLUMN = 1348
-VIEW_SELECT_CLAUSE = 1350
-VIEW_SELECT_VARIABLE = 1351
-VIEW_SELECT_TMPTABLE = 1352
-VIEW_WRONG_LIST = 1353
-WARN_VIEW_MERGE = 1354
-WARN_VIEW_WITHOUT_KEY = 1355
-VIEW_INVALID = 1356
-SP_NO_DROP_SP = 1357
-TRG_ALREADY_EXISTS = 1359
-TRG_DOES_NOT_EXIST = 1360
-TRG_ON_VIEW_OR_TEMP_TABLE = 1361
-TRG_CANT_CHANGE_ROW = 1362
-TRG_NO_SUCH_ROW_IN_TRG = 1363
-NO_DEFAULT_FOR_FIELD = 1364
-DIVISION_BY_ZERO = 1365
-TRUNCATED_WRONG_VALUE_FOR_FIELD = 1366
-ILLEGAL_VALUE_FOR_TYPE = 1367
-VIEW_NONUPD_CHECK = 1368
-VIEW_CHECK_FAILED = 1369
-PROCACCESS_DENIED_ERROR = 1370
-RELAY_LOG_FAIL = 1371
-UNKNOWN_TARGET_BINLOG = 1373
-IO_ERR_LOG_INDEX_READ = 1374
-BINLOG_PURGE_PROHIBITED = 1375
-FSEEK_FAIL = 1376
-BINLOG_PURGE_FATAL_ERR = 1377
-LOG_IN_USE = 1378
-LOG_PURGE_UNKNOWN_ERR = 1379
-RELAY_LOG_INIT = 1380
-NO_BINARY_LOGGING = 1381
-RESERVED_SYNTAX = 1382
-PS_MANY_PARAM = 1390
-KEY_PART_0 = 1391
-VIEW_CHECKSUM = 1392
-VIEW_MULTIUPDATE = 1393
-VIEW_NO_INSERT_FIELD_LIST = 1394
-VIEW_DELETE_MERGE_VIEW = 1395
-CANNOT_USER = 1396
-XAER_NOTA = 1397
-XAER_INVAL = 1398
-XAER_RMFAIL = 1399
-XAER_OUTSIDE = 1400
-XAER_RMERR = 1401
-XA_RBROLLBACK = 1402
-NONEXISTING_PROC_GRANT = 1403
-PROC_AUTO_GRANT_FAIL = 1404
-PROC_AUTO_REVOKE_FAIL = 1405
-DATA_TOO_LONG = 1406
-SP_BAD_SQLSTATE = 1407
-STARTUP = 1408
-LOAD_FROM_FIXED_SIZE_ROWS_TO_VAR = 1409
-CANT_CREATE_USER_WITH_GRANT = 1410
-WRONG_VALUE_FOR_TYPE = 1411
-TABLE_DEF_CHANGED = 1412
-SP_DUP_HANDLER = 1413
-SP_NOT_VAR_ARG = 1414
-SP_NO_RETSET = 1415
-CANT_CREATE_GEOMETRY_OBJECT = 1416
-BINLOG_UNSAFE_ROUTINE = 1418
-BINLOG_CREATE_ROUTINE_NEED_SUPER = 1419
-STMT_HAS_NO_OPEN_CURSOR = 1421
-COMMIT_NOT_ALLOWED_IN_SF_OR_TRG = 1422
-NO_DEFAULT_FOR_VIEW_FIELD = 1423
-SP_NO_RECURSION = 1424
-TOO_BIG_SCALE = 1425
-TOO_BIG_PRECISION = 1426
-M_BIGGER_THAN_D = 1427
-WRONG_LOCK_OF_SYSTEM_TABLE = 1428
-CONNECT_TO_FOREIGN_DATA_SOURCE = 1429
-QUERY_ON_FOREIGN_DATA_SOURCE = 1430
-FOREIGN_DATA_SOURCE_DOESNT_EXIST = 1431
-FOREIGN_DATA_STRING_INVALID_CANT_CREATE = 1432
-FOREIGN_DATA_STRING_INVALID = 1433
-TRG_IN_WRONG_SCHEMA = 1435
-STACK_OVERRUN_NEED_MORE = 1436
-TOO_LONG_BODY = 1437
-WARN_CANT_DROP_DEFAULT_KEYCACHE = 1438
-TOO_BIG_DISPLAYWIDTH = 1439
-XAER_DUPID = 1440
-DATETIME_FUNCTION_OVERFLOW = 1441
-CANT_UPDATE_USED_TABLE_IN_SF_OR_TRG = 1442
-VIEW_PREVENT_UPDATE = 1443
-PS_NO_RECURSION = 1444
-SP_CANT_SET_AUTOCOMMIT = 1445
-VIEW_FRM_NO_USER = 1447
-VIEW_OTHER_USER = 1448
-NO_SUCH_USER = 1449
-FORBID_SCHEMA_CHANGE = 1450
-ROW_IS_REFERENCED_2 = 1451
-NO_REFERENCED_ROW_2 = 1452
-SP_BAD_VAR_SHADOW = 1453
-TRG_NO_DEFINER = 1454
-OLD_FILE_FORMAT = 1455
-SP_RECURSION_LIMIT = 1456
-SP_WRONG_NAME = 1458
-TABLE_NEEDS_UPGRADE = 1459
-SP_NO_AGGREGATE = 1460
-MAX_PREPARED_STMT_COUNT_REACHED = 1461
-VIEW_RECURSIVE = 1462
-NON_GROUPING_FIELD_USED = 1463
-TABLE_CANT_HANDLE_SPKEYS = 1464
-NO_TRIGGERS_ON_SYSTEM_SCHEMA = 1465
-REMOVED_SPACES = 1466
-AUTOINC_READ_FAILED = 1467
-USERNAME = 1468
-HOSTNAME = 1469
-WRONG_STRING_LENGTH = 1470
-NON_INSERTABLE_TABLE = 1471
-ADMIN_WRONG_MRG_TABLE = 1472
-TOO_HIGH_LEVEL_OF_NESTING_FOR_SELECT = 1473
-NAME_BECOMES_EMPTY = 1474
-AMBIGUOUS_FIELD_TERM = 1475
-FOREIGN_SERVER_EXISTS = 1476
-FOREIGN_SERVER_DOESNT_EXIST = 1477
-ILLEGAL_HA_CREATE_OPTION = 1478
-PARTITION_REQUIRES_VALUES_ERROR = 1479
-PARTITION_WRONG_VALUES_ERROR = 1480
-PARTITION_MAXVALUE_ERROR = 1481
-PARTITION_WRONG_NO_PART_ERROR = 1484
-PARTITION_WRONG_NO_SUBPART_ERROR = 1485
-WRONG_EXPR_IN_PARTITION_FUNC_ERROR = 1486
-FIELD_NOT_FOUND_PART_ERROR = 1488
-INCONSISTENT_PARTITION_INFO_ERROR = 1490
-PARTITION_FUNC_NOT_ALLOWED_ERROR = 1491
-PARTITIONS_MUST_BE_DEFINED_ERROR = 1492
-RANGE_NOT_INCREASING_ERROR = 1493
-INCONSISTENT_TYPE_OF_FUNCTIONS_ERROR = 1494
-MULTIPLE_DEF_CONST_IN_LIST_PART_ERROR = 1495
-PARTITION_ENTRY_ERROR = 1496
-MIX_HANDLER_ERROR = 1497
-PARTITION_NOT_DEFINED_ERROR = 1498
-TOO_MANY_PARTITIONS_ERROR = 1499
-SUBPARTITION_ERROR = 1500
-CANT_CREATE_HANDLER_FILE = 1501
-BLOB_FIELD_IN_PART_FUNC_ERROR = 1502
-UNIQUE_KEY_NEED_ALL_FIELDS_IN_PF = 1503
-NO_PARTS_ERROR = 1504
-PARTITION_MGMT_ON_NONPARTITIONED = 1505
-FOREIGN_KEY_ON_PARTITIONED = 1506
-DROP_PARTITION_NON_EXISTENT = 1507
-DROP_LAST_PARTITION = 1508
-COALESCE_ONLY_ON_HASH_PARTITION = 1509
-REORG_HASH_ONLY_ON_SAME_NO = 1510
-REORG_NO_PARAM_ERROR = 1511
-ONLY_ON_RANGE_LIST_PARTITION = 1512
-ADD_PARTITION_SUBPART_ERROR = 1513
-ADD_PARTITION_NO_NEW_PARTITION = 1514
-COALESCE_PARTITION_NO_PARTITION = 1515
-REORG_PARTITION_NOT_EXIST = 1516
-SAME_NAME_PARTITION = 1517
-NO_BINLOG_ERROR = 1518
-CONSECUTIVE_REORG_PARTITIONS = 1519
-REORG_OUTSIDE_RANGE = 1520
-PARTITION_FUNCTION_FAILURE = 1521
-LIMITED_PART_RANGE = 1523
-PLUGIN_IS_NOT_LOADED = 1524
-WRONG_VALUE = 1525
-NO_PARTITION_FOR_GIVEN_VALUE = 1526
-FILEGROUP_OPTION_ONLY_ONCE = 1527
-CREATE_FILEGROUP_FAILED = 1528
-DROP_FILEGROUP_FAILED = 1529
-TABLESPACE_AUTO_EXTEND_ERROR = 1530
-WRONG_SIZE_NUMBER = 1531
-SIZE_OVERFLOW_ERROR = 1532
-ALTER_FILEGROUP_FAILED = 1533
-BINLOG_ROW_LOGGING_FAILED = 1534
-EVENT_ALREADY_EXISTS = 1537
-EVENT_DOES_NOT_EXIST = 1539
-EVENT_INTERVAL_NOT_POSITIVE_OR_TOO_BIG = 1542
-EVENT_ENDS_BEFORE_STARTS = 1543
-EVENT_EXEC_TIME_IN_THE_PAST = 1544
-EVENT_SAME_NAME = 1551
-DROP_INDEX_FK = 1553
-WARN_DEPRECATED_SYNTAX_WITH_VER = 1554
-CANT_LOCK_LOG_TABLE = 1556
-FOREIGN_DUPLICATE_KEY_OLD_UNUSED = 1557
-COL_COUNT_DOESNT_MATCH_PLEASE_UPDATE = 1558
-TEMP_TABLE_PREVENTS_SWITCH_OUT_OF_RBR = 1559
-STORED_FUNCTION_PREVENTS_SWITCH_BINLOG_FORMAT = 1560
-PARTITION_NO_TEMPORARY = 1562
-PARTITION_CONST_DOMAIN_ERROR = 1563
-PARTITION_FUNCTION_IS_NOT_ALLOWED = 1564
-NULL_IN_VALUES_LESS_THAN = 1566
-WRONG_PARTITION_NAME = 1567
-CANT_CHANGE_TX_CHARACTERISTICS = 1568
-DUP_ENTRY_AUTOINCREMENT_CASE = 1569
-EVENT_SET_VAR_ERROR = 1571
-PARTITION_MERGE_ERROR = 1572
-BASE64_DECODE_ERROR = 1575
-EVENT_RECURSION_FORBIDDEN = 1576
-ONLY_INTEGERS_ALLOWED = 1578
-UNSUPORTED_LOG_ENGINE = 1579
-BAD_LOG_STATEMENT = 1580
-CANT_RENAME_LOG_TABLE = 1581
-WRONG_PARAMCOUNT_TO_NATIVE_FCT = 1582
-WRONG_PARAMETERS_TO_NATIVE_FCT = 1583
-WRONG_PARAMETERS_TO_STORED_FCT = 1584
-NATIVE_FCT_NAME_COLLISION = 1585
-DUP_ENTRY_WITH_KEY_NAME = 1586
-BINLOG_PURGE_EMFILE = 1587
-EVENT_CANNOT_CREATE_IN_THE_PAST = 1588
-EVENT_CANNOT_ALTER_IN_THE_PAST = 1589
-NO_PARTITION_FOR_GIVEN_VALUE_SILENT = 1591
-BINLOG_UNSAFE_STATEMENT = 1592
-BINLOG_FATAL_ERROR = 1593
-BINLOG_LOGGING_IMPOSSIBLE = 1598
-VIEW_NO_CREATION_CTX = 1599
-VIEW_INVALID_CREATION_CTX = 1600
-TRG_CORRUPTED_FILE = 1602
-TRG_NO_CREATION_CTX = 1603
-TRG_INVALID_CREATION_CTX = 1604
-EVENT_INVALID_CREATION_CTX = 1605
-TRG_CANT_OPEN_TABLE = 1606
-NO_FORMAT_DESCRIPTION_EVENT_BEFORE_BINLOG_STATEMENT = 1609
-SLAVE_CORRUPT_EVENT = 1610
-LOG_PURGE_NO_FILE = 1612
-XA_RBTIMEOUT = 1613
-XA_RBDEADLOCK = 1614
-NEED_REPREPARE = 1615
-WARN_NO_MASTER_INFO = 1617
-WARN_OPTION_IGNORED = 1618
-PLUGIN_DELETE_BUILTIN = 1619
-WARN_PLUGIN_BUSY = 1620
-VARIABLE_IS_READONLY = 1621
-WARN_ENGINE_TRANSACTION_ROLLBACK = 1622
-SLAVE_HEARTBEAT_VALUE_OUT_OF_RANGE = 1624
-NDB_REPLICATION_SCHEMA_ERROR = 1625
-CONFLICT_FN_PARSE_ERROR = 1626
-EXCEPTIONS_WRITE_ERROR = 1627
-TOO_LONG_TABLE_COMMENT = 1628
-TOO_LONG_FIELD_COMMENT = 1629
-FUNC_INEXISTENT_NAME_COLLISION = 1630
-DATABASE_NAME = 1631
-TABLE_NAME = 1632
-PARTITION_NAME = 1633
-SUBPARTITION_NAME = 1634
-TEMPORARY_NAME = 1635
-RENAMED_NAME = 1636
-TOO_MANY_CONCURRENT_TRXS = 1637
-WARN_NON_ASCII_SEPARATOR_NOT_IMPLEMENTED = 1638
-DEBUG_SYNC_TIMEOUT = 1639
-DEBUG_SYNC_HIT_LIMIT = 1640
-DUP_SIGNAL_SET = 1641
-SIGNAL_WARN = 1642
-SIGNAL_NOT_FOUND = 1643
-SIGNAL_EXCEPTION = 1644
-RESIGNAL_WITHOUT_ACTIVE_HANDLER = 1645
-SIGNAL_BAD_CONDITION_TYPE = 1646
-WARN_COND_ITEM_TRUNCATED = 1647
-COND_ITEM_TOO_LONG = 1648
-UNKNOWN_LOCALE = 1649
-SLAVE_IGNORE_SERVER_IDS = 1650
-SAME_NAME_PARTITION_FIELD = 1652
-PARTITION_COLUMN_LIST_ERROR = 1653
-WRONG_TYPE_COLUMN_VALUE_ERROR = 1654
-TOO_MANY_PARTITION_FUNC_FIELDS_ERROR = 1655
-MAXVALUE_IN_VALUES_IN = 1656
-TOO_MANY_VALUES_ERROR = 1657
-ROW_SINGLE_PARTITION_FIELD_ERROR = 1658
-FIELD_TYPE_NOT_ALLOWED_AS_PARTITION_FIELD = 1659
-PARTITION_FIELDS_TOO_LONG = 1660
-BINLOG_ROW_ENGINE_AND_STMT_ENGINE = 1661
-BINLOG_ROW_MODE_AND_STMT_ENGINE = 1662
-BINLOG_UNSAFE_AND_STMT_ENGINE = 1663
-BINLOG_ROW_INJECTION_AND_STMT_ENGINE = 1664
-BINLOG_STMT_MODE_AND_ROW_ENGINE = 1665
-BINLOG_ROW_INJECTION_AND_STMT_MODE = 1666
-BINLOG_MULTIPLE_ENGINES_AND_SELF_LOGGING_ENGINE = 1667
-BINLOG_UNSAFE_LIMIT = 1668
-BINLOG_UNSAFE_SYSTEM_TABLE = 1670
-BINLOG_UNSAFE_AUTOINC_COLUMNS = 1671
-BINLOG_UNSAFE_UDF = 1672
-BINLOG_UNSAFE_SYSTEM_VARIABLE = 1673
-BINLOG_UNSAFE_SYSTEM_FUNCTION = 1674
-BINLOG_UNSAFE_NONTRANS_AFTER_TRANS = 1675
-MESSAGE_AND_STATEMENT = 1676
-SLAVE_CANT_CREATE_CONVERSION = 1678
-INSIDE_TRANSACTION_PREVENTS_SWITCH_BINLOG_FORMAT = 1679
-PATH_LENGTH = 1680
-WARN_DEPRECATED_SYNTAX_NO_REPLACEMENT = 1681
-WRONG_NATIVE_TABLE_STRUCTURE = 1682
-WRONG_PERFSCHEMA_USAGE = 1683
-WARN_I_S_SKIPPED_TABLE = 1684
-INSIDE_TRANSACTION_PREVENTS_SWITCH_BINLOG_DIRECT = 1685
-STORED_FUNCTION_PREVENTS_SWITCH_BINLOG_DIRECT = 1686
-SPATIAL_MUST_HAVE_GEOM_COL = 1687
-TOO_LONG_INDEX_COMMENT = 1688
-LOCK_ABORTED = 1689
-DATA_OUT_OF_RANGE = 1690
-WRONG_SPVAR_TYPE_IN_LIMIT = 1691
-BINLOG_UNSAFE_MULTIPLE_ENGINES_AND_SELF_LOGGING_ENGINE = 1692
-BINLOG_UNSAFE_MIXED_STATEMENT = 1693
-INSIDE_TRANSACTION_PREVENTS_SWITCH_SQL_LOG_BIN = 1694
-STORED_FUNCTION_PREVENTS_SWITCH_SQL_LOG_BIN = 1695
-FAILED_READ_FROM_PAR_FILE = 1696
-VALUES_IS_NOT_INT_TYPE_ERROR = 1697
-ACCESS_DENIED_NO_PASSWORD_ERROR = 1698
-SET_PASSWORD_AUTH_PLUGIN = 1699
-TRUNCATE_ILLEGAL_FK = 1701
-PLUGIN_IS_PERMANENT = 1702
-SLAVE_HEARTBEAT_VALUE_OUT_OF_RANGE_MIN = 1703
-SLAVE_HEARTBEAT_VALUE_OUT_OF_RANGE_MAX = 1704
-STMT_CACHE_FULL = 1705
-MULTI_UPDATE_KEY_CONFLICT = 1706
-TABLE_NEEDS_REBUILD = 1707
-WARN_OPTION_BELOW_LIMIT = 1708
-INDEX_COLUMN_TOO_LONG = 1709
-ERROR_IN_TRIGGER_BODY = 1710
-ERROR_IN_UNKNOWN_TRIGGER_BODY = 1711
-INDEX_CORRUPT = 1712
-UNDO_RECORD_TOO_BIG = 1713
-BINLOG_UNSAFE_INSERT_IGNORE_SELECT = 1714
-BINLOG_UNSAFE_INSERT_SELECT_UPDATE = 1715
-BINLOG_UNSAFE_REPLACE_SELECT = 1716
-BINLOG_UNSAFE_CREATE_IGNORE_SELECT = 1717
-BINLOG_UNSAFE_CREATE_REPLACE_SELECT = 1718
-BINLOG_UNSAFE_UPDATE_IGNORE = 1719
-PLUGIN_NO_UNINSTALL = 1720
-PLUGIN_NO_INSTALL = 1721
-BINLOG_UNSAFE_WRITE_AUTOINC_SELECT = 1722
-BINLOG_UNSAFE_CREATE_SELECT_AUTOINC = 1723
-BINLOG_UNSAFE_INSERT_TWO_KEYS = 1724
-TABLE_IN_FK_CHECK = 1725
-UNSUPPORTED_ENGINE = 1726
-BINLOG_UNSAFE_AUTOINC_NOT_FIRST = 1727
-CANNOT_LOAD_FROM_TABLE_V2 = 1728
-MASTER_DELAY_VALUE_OUT_OF_RANGE = 1729
-ONLY_FD_AND_RBR_EVENTS_ALLOWED_IN_BINLOG_STATEMENT = 1730
-PARTITION_EXCHANGE_DIFFERENT_OPTION = 1731
-PARTITION_EXCHANGE_PART_TABLE = 1732
-PARTITION_EXCHANGE_TEMP_TABLE = 1733
-PARTITION_INSTEAD_OF_SUBPARTITION = 1734
-UNKNOWN_PARTITION = 1735
-TABLES_DIFFERENT_METADATA = 1736
-ROW_DOES_NOT_MATCH_PARTITION = 1737
-BINLOG_CACHE_SIZE_GREATER_THAN_MAX = 1738
-WARN_INDEX_NOT_APPLICABLE = 1739
-PARTITION_EXCHANGE_FOREIGN_KEY = 1740
-RPL_INFO_DATA_TOO_LONG = 1742
-BINLOG_STMT_CACHE_SIZE_GREATER_THAN_MAX = 1745
-CANT_UPDATE_TABLE_IN_CREATE_TABLE_SELECT = 1746
-PARTITION_CLAUSE_ON_NONPARTITIONED = 1747
-ROW_DOES_NOT_MATCH_GIVEN_PARTITION_SET = 1748
-CHANGE_RPL_INFO_REPOSITORY_FAILURE = 1750
-WARNING_NOT_COMPLETE_ROLLBACK_WITH_CREATED_TEMP_TABLE = 1751
-WARNING_NOT_COMPLETE_ROLLBACK_WITH_DROPPED_TEMP_TABLE = 1752
-MTS_FEATURE_IS_NOT_SUPPORTED = 1753
-MTS_UPDATED_DBS_GREATER_MAX = 1754
-MTS_CANT_PARALLEL = 1755
-MTS_INCONSISTENT_DATA = 1756
-FULLTEXT_NOT_SUPPORTED_WITH_PARTITIONING = 1757
-DA_INVALID_CONDITION_NUMBER = 1758
-INSECURE_PLAIN_TEXT = 1759
-INSECURE_CHANGE_MASTER = 1760
-FOREIGN_DUPLICATE_KEY_WITH_CHILD_INFO = 1761
-FOREIGN_DUPLICATE_KEY_WITHOUT_CHILD_INFO = 1762
-SQLTHREAD_WITH_SECURE_SLAVE = 1763
-TABLE_HAS_NO_FT = 1764
-VARIABLE_NOT_SETTABLE_IN_SF_OR_TRIGGER = 1765
-VARIABLE_NOT_SETTABLE_IN_TRANSACTION = 1766
-SET_STATEMENT_CANNOT_INVOKE_FUNCTION = 1769
-GTID_NEXT_CANT_BE_AUTOMATIC_IF_GTID_NEXT_LIST_IS_NON_NULL = 1770
-MALFORMED_GTID_SET_SPECIFICATION = 1772
-MALFORMED_GTID_SET_ENCODING = 1773
-MALFORMED_GTID_SPECIFICATION = 1774
-GNO_EXHAUSTED = 1775
-BAD_SLAVE_AUTO_POSITION = 1776
-AUTO_POSITION_REQUIRES_GTID_MODE_NOT_OFF = 1777
-CANT_DO_IMPLICIT_COMMIT_IN_TRX_WHEN_GTID_NEXT_IS_SET = 1778
-GTID_MODE_ON_REQUIRES_ENFORCE_GTID_CONSISTENCY_ON = 1779
-CANT_SET_GTID_NEXT_TO_GTID_WHEN_GTID_MODE_IS_OFF = 1781
-CANT_SET_GTID_NEXT_TO_ANONYMOUS_WHEN_GTID_MODE_IS_ON = 1782
-CANT_SET_GTID_NEXT_LIST_TO_NON_NULL_WHEN_GTID_MODE_IS_OFF = 1783
-GTID_UNSAFE_NON_TRANSACTIONAL_TABLE = 1785
-GTID_UNSAFE_CREATE_SELECT = 1786
-GTID_UNSAFE_CREATE_DROP_TEMPORARY_TABLE_IN_TRANSACTION = 1787
-GTID_MODE_CAN_ONLY_CHANGE_ONE_STEP_AT_A_TIME = 1788
-MASTER_HAS_PURGED_REQUIRED_GTIDS = 1789
-CANT_SET_GTID_NEXT_WHEN_OWNING_GTID = 1790
-UNKNOWN_EXPLAIN_FORMAT = 1791
-CANT_EXECUTE_IN_READ_ONLY_TRANSACTION = 1792
-TOO_LONG_TABLE_PARTITION_COMMENT = 1793
-SLAVE_CONFIGURATION = 1794
-INNODB_FT_LIMIT = 1795
-INNODB_NO_FT_TEMP_TABLE = 1796
-INNODB_FT_WRONG_DOCID_COLUMN = 1797
-INNODB_FT_WRONG_DOCID_INDEX = 1798
-INNODB_ONLINE_LOG_TOO_BIG = 1799
-UNKNOWN_ALTER_ALGORITHM = 1800
-UNKNOWN_ALTER_LOCK = 1801
-MTS_CHANGE_MASTER_CANT_RUN_WITH_GAPS = 1802
-MTS_RECOVERY_FAILURE = 1803
-MTS_RESET_WORKERS = 1804
-COL_COUNT_DOESNT_MATCH_CORRUPTED_V2 = 1805
-SLAVE_SILENT_RETRY_TRANSACTION = 1806
-DISCARD_FK_CHECKS_RUNNING = 1807
-TABLE_SCHEMA_MISMATCH = 1808
-TABLE_IN_SYSTEM_TABLESPACE = 1809
-IO_READ_ERROR = 1810
-IO_WRITE_ERROR = 1811
-TABLESPACE_MISSING = 1812
-TABLESPACE_EXISTS = 1813
-TABLESPACE_DISCARDED = 1814
-INTERNAL_ERROR = 1815
-INNODB_IMPORT_ERROR = 1816
-INNODB_INDEX_CORRUPT = 1817
-INVALID_YEAR_COLUMN_LENGTH = 1818
-NOT_VALID_PASSWORD = 1819
-MUST_CHANGE_PASSWORD = 1820
-FK_NO_INDEX_CHILD = 1821
-FK_NO_INDEX_PARENT = 1822
-FK_FAIL_ADD_SYSTEM = 1823
-FK_CANNOT_OPEN_PARENT = 1824
-FK_INCORRECT_OPTION = 1825
-FK_DUP_NAME = 1826
-PASSWORD_FORMAT = 1827
-FK_COLUMN_CANNOT_DROP = 1828
-FK_COLUMN_CANNOT_DROP_CHILD = 1829
-FK_COLUMN_NOT_NULL = 1830
-DUP_INDEX = 1831
-FK_COLUMN_CANNOT_CHANGE = 1832
-FK_COLUMN_CANNOT_CHANGE_CHILD = 1833
-MALFORMED_PACKET = 1835
-READ_ONLY_MODE = 1836
-GTID_NEXT_TYPE_UNDEFINED_GTID = 1837
-VARIABLE_NOT_SETTABLE_IN_SP = 1838
-CANT_SET_GTID_PURGED_WHEN_GTID_EXECUTED_IS_NOT_EMPTY = 1840
-CANT_SET_GTID_PURGED_WHEN_OWNED_GTIDS_IS_NOT_EMPTY = 1841
-GTID_PURGED_WAS_CHANGED = 1842
-GTID_EXECUTED_WAS_CHANGED = 1843
-BINLOG_STMT_MODE_AND_NO_REPL_TABLES = 1844
-ALTER_OPERATION_NOT_SUPPORTED = 1845
-ALTER_OPERATION_NOT_SUPPORTED_REASON = 1846
-ALTER_OPERATION_NOT_SUPPORTED_REASON_COPY = 1847
-ALTER_OPERATION_NOT_SUPPORTED_REASON_PARTITION = 1848
-ALTER_OPERATION_NOT_SUPPORTED_REASON_FK_RENAME = 1849
-ALTER_OPERATION_NOT_SUPPORTED_REASON_COLUMN_TYPE = 1850
-ALTER_OPERATION_NOT_SUPPORTED_REASON_FK_CHECK = 1851
-ALTER_OPERATION_NOT_SUPPORTED_REASON_NOPK = 1853
-ALTER_OPERATION_NOT_SUPPORTED_REASON_AUTOINC = 1854
-ALTER_OPERATION_NOT_SUPPORTED_REASON_HIDDEN_FTS = 1855
-ALTER_OPERATION_NOT_SUPPORTED_REASON_CHANGE_FTS = 1856
-ALTER_OPERATION_NOT_SUPPORTED_REASON_FTS = 1857
-SQL_SLAVE_SKIP_COUNTER_NOT_SETTABLE_IN_GTID_MODE = 1858
-DUP_UNKNOWN_IN_INDEX = 1859
-IDENT_CAUSES_TOO_LONG_PATH = 1860
-ALTER_OPERATION_NOT_SUPPORTED_REASON_NOT_NULL = 1861
-MUST_CHANGE_PASSWORD_LOGIN = 1862
-ROW_IN_WRONG_PARTITION = 1863
-MTS_EVENT_BIGGER_PENDING_JOBS_SIZE_MAX = 1864
-BINLOG_LOGICAL_CORRUPTION = 1866
-WARN_PURGE_LOG_IN_USE = 1867
-WARN_PURGE_LOG_IS_ACTIVE = 1868
-AUTO_INCREMENT_CONFLICT = 1869
-WARN_ON_BLOCKHOLE_IN_RBR = 1870
-SLAVE_MI_INIT_REPOSITORY = 1871
-SLAVE_RLI_INIT_REPOSITORY = 1872
-ACCESS_DENIED_CHANGE_USER_ERROR = 1873
-INNODB_READ_ONLY = 1874
-STOP_SLAVE_SQL_THREAD_TIMEOUT = 1875
-STOP_SLAVE_IO_THREAD_TIMEOUT = 1876
-TABLE_CORRUPT = 1877
-TEMP_FILE_WRITE_FAILURE = 1878
-INNODB_FT_AUX_NOT_HEX_ID = 1879
-OLD_TEMPORALS_UPGRADED = 1880
-INNODB_FORCED_RECOVERY = 1881
-AES_INVALID_IV = 1882
-PLUGIN_CANNOT_BE_UNINSTALLED = 1883
-GTID_UNSAFE_BINLOG_SPLITTABLE_STATEMENT_AND_ASSIGNED_GTID = 1884
-SLAVE_HAS_MORE_GTIDS_THAN_MASTER = 1885
-MISSING_KEY = 1886
-ERROR_LAST = 1973
+"""MySQL ER Constants
+
+These constants are error codes for the bulk of the error conditions
+that may occur.
+"""
+
+if __name__ == "__main__":
+    """
+    Usage: python ER.py [/path/to/mysql/mysqld_error.h ...] >> ER.py
+    """
+    import fileinput
+    import re
+
+    data = {}
+    error_last = None
+    for line in fileinput.input():
+        line = re.sub(r"/\*.*?\*/", "", line)
+        m = re.match(r"^\s*#define\s+((ER|WARN)_[A-Z0-9_]+)\s+(\d+)\s*", line)
+        if m:
+            name = m.group(1)
+            if name.startswith("ER_"):
+                name = name[3:]
+            value = int(m.group(3))
+            if name == "ERROR_LAST":
+                if error_last is None or error_last < value:
+                    error_last = value
+                continue
+            if value not in data:
+                data[value] = set()
+            data[value].add(name)
+    for value, names in sorted(data.items()):
+        for name in sorted(names):
+            print("{} = {}".format(name, value))
+    if error_last is not None:
+        print("ERROR_LAST = %s" % error_last)
+
+
+ERROR_FIRST = 1000
+NO = 1002
+YES = 1003
+CANT_CREATE_FILE = 1004
+CANT_CREATE_TABLE = 1005
+CANT_CREATE_DB = 1006
+DB_CREATE_EXISTS = 1007
+DB_DROP_EXISTS = 1008
+DB_DROP_RMDIR = 1010
+CANT_FIND_SYSTEM_REC = 1012
+CANT_GET_STAT = 1013
+CANT_LOCK = 1015
+CANT_OPEN_FILE = 1016
+FILE_NOT_FOUND = 1017
+CANT_READ_DIR = 1018
+CHECKREAD = 1020
+DUP_KEY = 1022
+ERROR_ON_READ = 1024
+ERROR_ON_RENAME = 1025
+ERROR_ON_WRITE = 1026
+FILE_USED = 1027
+FILSORT_ABORT = 1028
+GET_ERRNO = 1030
+ILLEGAL_HA = 1031
+KEY_NOT_FOUND = 1032
+NOT_FORM_FILE = 1033
+NOT_KEYFILE = 1034
+OLD_KEYFILE = 1035
+OPEN_AS_READONLY = 1036
+OUTOFMEMORY = 1037
+OUT_OF_SORTMEMORY = 1038
+CON_COUNT_ERROR = 1040
+OUT_OF_RESOURCES = 1041
+BAD_HOST_ERROR = 1042
+HANDSHAKE_ERROR = 1043
+DBACCESS_DENIED_ERROR = 1044
+ACCESS_DENIED_ERROR = 1045
+NO_DB_ERROR = 1046
+UNKNOWN_COM_ERROR = 1047
+BAD_NULL_ERROR = 1048
+BAD_DB_ERROR = 1049
+TABLE_EXISTS_ERROR = 1050
+BAD_TABLE_ERROR = 1051
+NON_UNIQ_ERROR = 1052
+SERVER_SHUTDOWN = 1053
+BAD_FIELD_ERROR = 1054
+WRONG_FIELD_WITH_GROUP = 1055
+WRONG_GROUP_FIELD = 1056
+WRONG_SUM_SELECT = 1057
+WRONG_VALUE_COUNT = 1058
+TOO_LONG_IDENT = 1059
+DUP_FIELDNAME = 1060
+DUP_KEYNAME = 1061
+DUP_ENTRY = 1062
+WRONG_FIELD_SPEC = 1063
+PARSE_ERROR = 1064
+EMPTY_QUERY = 1065
+NONUNIQ_TABLE = 1066
+INVALID_DEFAULT = 1067
+MULTIPLE_PRI_KEY = 1068
+TOO_MANY_KEYS = 1069
+TOO_MANY_KEY_PARTS = 1070
+TOO_LONG_KEY = 1071
+KEY_COLUMN_DOES_NOT_EXITS = 1072
+BLOB_USED_AS_KEY = 1073
+TOO_BIG_FIELDLENGTH = 1074
+WRONG_AUTO_KEY = 1075
+READY = 1076
+SHUTDOWN_COMPLETE = 1079
+FORCING_CLOSE = 1080
+IPSOCK_ERROR = 1081
+NO_SUCH_INDEX = 1082
+WRONG_FIELD_TERMINATORS = 1083
+BLOBS_AND_NO_TERMINATED = 1084
+TEXTFILE_NOT_READABLE = 1085
+FILE_EXISTS_ERROR = 1086
+LOAD_INFO = 1087
+ALTER_INFO = 1088
+WRONG_SUB_KEY = 1089
+CANT_REMOVE_ALL_FIELDS = 1090
+CANT_DROP_FIELD_OR_KEY = 1091
+INSERT_INFO = 1092
+UPDATE_TABLE_USED = 1093
+NO_SUCH_THREAD = 1094
+KILL_DENIED_ERROR = 1095
+NO_TABLES_USED = 1096
+TOO_BIG_SET = 1097
+NO_UNIQUE_LOGFILE = 1098
+TABLE_NOT_LOCKED_FOR_WRITE = 1099
+TABLE_NOT_LOCKED = 1100
+BLOB_CANT_HAVE_DEFAULT = 1101
+WRONG_DB_NAME = 1102
+WRONG_TABLE_NAME = 1103
+TOO_BIG_SELECT = 1104
+UNKNOWN_ERROR = 1105
+UNKNOWN_PROCEDURE = 1106
+WRONG_PARAMCOUNT_TO_PROCEDURE = 1107
+WRONG_PARAMETERS_TO_PROCEDURE = 1108
+UNKNOWN_TABLE = 1109
+FIELD_SPECIFIED_TWICE = 1110
+INVALID_GROUP_FUNC_USE = 1111
+UNSUPPORTED_EXTENSION = 1112
+TABLE_MUST_HAVE_COLUMNS = 1113
+RECORD_FILE_FULL = 1114
+UNKNOWN_CHARACTER_SET = 1115
+TOO_MANY_TABLES = 1116
+TOO_MANY_FIELDS = 1117
+TOO_BIG_ROWSIZE = 1118
+STACK_OVERRUN = 1119
+WRONG_OUTER_JOIN_UNUSED = 1120
+NULL_COLUMN_IN_INDEX = 1121
+CANT_FIND_UDF = 1122
+CANT_INITIALIZE_UDF = 1123
+UDF_NO_PATHS = 1124
+UDF_EXISTS = 1125
+CANT_OPEN_LIBRARY = 1126
+CANT_FIND_DL_ENTRY = 1127
+FUNCTION_NOT_DEFINED = 1128
+HOST_IS_BLOCKED = 1129
+HOST_NOT_PRIVILEGED = 1130
+PASSWORD_ANONYMOUS_USER = 1131
+PASSWORD_NOT_ALLOWED = 1132
+PASSWORD_NO_MATCH = 1133
+UPDATE_INFO = 1134
+CANT_CREATE_THREAD = 1135
+WRONG_VALUE_COUNT_ON_ROW = 1136
+CANT_REOPEN_TABLE = 1137
+INVALID_USE_OF_NULL = 1138
+REGEXP_ERROR = 1139
+MIX_OF_GROUP_FUNC_AND_FIELDS = 1140
+NONEXISTING_GRANT = 1141
+TABLEACCESS_DENIED_ERROR = 1142
+COLUMNACCESS_DENIED_ERROR = 1143
+ILLEGAL_GRANT_FOR_TABLE = 1144
+GRANT_WRONG_HOST_OR_USER = 1145
+NO_SUCH_TABLE = 1146
+NONEXISTING_TABLE_GRANT = 1147
+NOT_ALLOWED_COMMAND = 1148
+SYNTAX_ERROR = 1149
+ABORTING_CONNECTION = 1152
+NET_PACKET_TOO_LARGE = 1153
+NET_READ_ERROR_FROM_PIPE = 1154
+NET_FCNTL_ERROR = 1155
+NET_PACKETS_OUT_OF_ORDER = 1156
+NET_UNCOMPRESS_ERROR = 1157
+NET_READ_ERROR = 1158
+NET_READ_INTERRUPTED = 1159
+NET_ERROR_ON_WRITE = 1160
+NET_WRITE_INTERRUPTED = 1161
+TOO_LONG_STRING = 1162
+TABLE_CANT_HANDLE_BLOB = 1163
+TABLE_CANT_HANDLE_AUTO_INCREMENT = 1164
+WRONG_COLUMN_NAME = 1166
+WRONG_KEY_COLUMN = 1167
+WRONG_MRG_TABLE = 1168
+DUP_UNIQUE = 1169
+BLOB_KEY_WITHOUT_LENGTH = 1170
+PRIMARY_CANT_HAVE_NULL = 1171
+TOO_MANY_ROWS = 1172
+REQUIRES_PRIMARY_KEY = 1173
+UPDATE_WITHOUT_KEY_IN_SAFE_MODE = 1175
+KEY_DOES_NOT_EXITS = 1176
+CHECK_NO_SUCH_TABLE = 1177
+CHECK_NOT_IMPLEMENTED = 1178
+CANT_DO_THIS_DURING_AN_TRANSACTION = 1179
+ERROR_DURING_COMMIT = 1180
+ERROR_DURING_ROLLBACK = 1181
+ERROR_DURING_FLUSH_LOGS = 1182
+NEW_ABORTING_CONNECTION = 1184
+MASTER = 1188
+MASTER_NET_READ = 1189
+MASTER_NET_WRITE = 1190
+FT_MATCHING_KEY_NOT_FOUND = 1191
+LOCK_OR_ACTIVE_TRANSACTION = 1192
+UNKNOWN_SYSTEM_VARIABLE = 1193
+CRASHED_ON_USAGE = 1194
+CRASHED_ON_REPAIR = 1195
+WARNING_NOT_COMPLETE_ROLLBACK = 1196
+TRANS_CACHE_FULL = 1197
+SLAVE_NOT_RUNNING = 1199
+BAD_SLAVE = 1200
+MASTER_INFO = 1201
+SLAVE_THREAD = 1202
+TOO_MANY_USER_CONNECTIONS = 1203
+SET_CONSTANTS_ONLY = 1204
+LOCK_WAIT_TIMEOUT = 1205
+LOCK_TABLE_FULL = 1206
+READ_ONLY_TRANSACTION = 1207
+WRONG_ARGUMENTS = 1210
+NO_PERMISSION_TO_CREATE_USER = 1211
+LOCK_DEADLOCK = 1213
+TABLE_CANT_HANDLE_FT = 1214
+CANNOT_ADD_FOREIGN = 1215
+NO_REFERENCED_ROW = 1216
+ROW_IS_REFERENCED = 1217
+CONNECT_TO_MASTER = 1218
+ERROR_WHEN_EXECUTING_COMMAND = 1220
+WRONG_USAGE = 1221
+WRONG_NUMBER_OF_COLUMNS_IN_SELECT = 1222
+CANT_UPDATE_WITH_READLOCK = 1223
+MIXING_NOT_ALLOWED = 1224
+DUP_ARGUMENT = 1225
+USER_LIMIT_REACHED = 1226
+SPECIFIC_ACCESS_DENIED_ERROR = 1227
+LOCAL_VARIABLE = 1228
+GLOBAL_VARIABLE = 1229
+NO_DEFAULT = 1230
+WRONG_VALUE_FOR_VAR = 1231
+WRONG_TYPE_FOR_VAR = 1232
+VAR_CANT_BE_READ = 1233
+CANT_USE_OPTION_HERE = 1234
+NOT_SUPPORTED_YET = 1235
+MASTER_FATAL_ERROR_READING_BINLOG = 1236
+SLAVE_IGNORED_TABLE = 1237
+INCORRECT_GLOBAL_LOCAL_VAR = 1238
+WRONG_FK_DEF = 1239
+KEY_REF_DO_NOT_MATCH_TABLE_REF = 1240
+OPERAND_COLUMNS = 1241
+SUBQUERY_NO_1_ROW = 1242
+UNKNOWN_STMT_HANDLER = 1243
+CORRUPT_HELP_DB = 1244
+AUTO_CONVERT = 1246
+ILLEGAL_REFERENCE = 1247
+DERIVED_MUST_HAVE_ALIAS = 1248
+SELECT_REDUCED = 1249
+TABLENAME_NOT_ALLOWED_HERE = 1250
+NOT_SUPPORTED_AUTH_MODE = 1251
+SPATIAL_CANT_HAVE_NULL = 1252
+COLLATION_CHARSET_MISMATCH = 1253
+TOO_BIG_FOR_UNCOMPRESS = 1256
+ZLIB_Z_MEM_ERROR = 1257
+ZLIB_Z_BUF_ERROR = 1258
+ZLIB_Z_DATA_ERROR = 1259
+CUT_VALUE_GROUP_CONCAT = 1260
+WARN_TOO_FEW_RECORDS = 1261
+WARN_TOO_MANY_RECORDS = 1262
+WARN_NULL_TO_NOTNULL = 1263
+WARN_DATA_OUT_OF_RANGE = 1264
+WARN_DATA_TRUNCATED = 1265
+WARN_USING_OTHER_HANDLER = 1266
+CANT_AGGREGATE_2COLLATIONS = 1267
+REVOKE_GRANTS = 1269
+CANT_AGGREGATE_3COLLATIONS = 1270
+CANT_AGGREGATE_NCOLLATIONS = 1271
+VARIABLE_IS_NOT_STRUCT = 1272
+UNKNOWN_COLLATION = 1273
+SLAVE_IGNORED_SSL_PARAMS = 1274
+SERVER_IS_IN_SECURE_AUTH_MODE = 1275
+WARN_FIELD_RESOLVED = 1276
+BAD_SLAVE_UNTIL_COND = 1277
+MISSING_SKIP_SLAVE = 1278
+UNTIL_COND_IGNORED = 1279
+WRONG_NAME_FOR_INDEX = 1280
+WRONG_NAME_FOR_CATALOG = 1281
+BAD_FT_COLUMN = 1283
+UNKNOWN_KEY_CACHE = 1284
+WARN_HOSTNAME_WONT_WORK = 1285
+UNKNOWN_STORAGE_ENGINE = 1286
+WARN_DEPRECATED_SYNTAX = 1287
+NON_UPDATABLE_TABLE = 1288
+FEATURE_DISABLED = 1289
+OPTION_PREVENTS_STATEMENT = 1290
+DUPLICATED_VALUE_IN_TYPE = 1291
+TRUNCATED_WRONG_VALUE = 1292
+INVALID_ON_UPDATE = 1294
+UNSUPPORTED_PS = 1295
+GET_ERRMSG = 1296
+GET_TEMPORARY_ERRMSG = 1297
+UNKNOWN_TIME_ZONE = 1298
+WARN_INVALID_TIMESTAMP = 1299
+INVALID_CHARACTER_STRING = 1300
+WARN_ALLOWED_PACKET_OVERFLOWED = 1301
+CONFLICTING_DECLARATIONS = 1302
+SP_NO_RECURSIVE_CREATE = 1303
+SP_ALREADY_EXISTS = 1304
+SP_DOES_NOT_EXIST = 1305
+SP_DROP_FAILED = 1306
+SP_STORE_FAILED = 1307
+SP_LILABEL_MISMATCH = 1308
+SP_LABEL_REDEFINE = 1309
+SP_LABEL_MISMATCH = 1310
+SP_UNINIT_VAR = 1311
+SP_BADSELECT = 1312
+SP_BADRETURN = 1313
+SP_BADSTATEMENT = 1314
+UPDATE_LOG_DEPRECATED_IGNORED = 1315
+UPDATE_LOG_DEPRECATED_TRANSLATED = 1316
+QUERY_INTERRUPTED = 1317
+SP_WRONG_NO_OF_ARGS = 1318
+SP_COND_MISMATCH = 1319
+SP_NORETURN = 1320
+SP_NORETURNEND = 1321
+SP_BAD_CURSOR_QUERY = 1322
+SP_BAD_CURSOR_SELECT = 1323
+SP_CURSOR_MISMATCH = 1324
+SP_CURSOR_ALREADY_OPEN = 1325
+SP_CURSOR_NOT_OPEN = 1326
+SP_UNDECLARED_VAR = 1327
+SP_WRONG_NO_OF_FETCH_ARGS = 1328
+SP_FETCH_NO_DATA = 1329
+SP_DUP_PARAM = 1330
+SP_DUP_VAR = 1331
+SP_DUP_COND = 1332
+SP_DUP_CURS = 1333
+SP_CANT_ALTER = 1334
+SP_SUBSELECT_NYI = 1335
+STMT_NOT_ALLOWED_IN_SF_OR_TRG = 1336
+SP_VARCOND_AFTER_CURSHNDLR = 1337
+SP_CURSOR_AFTER_HANDLER = 1338
+SP_CASE_NOT_FOUND = 1339
+FPARSER_TOO_BIG_FILE = 1340
+FPARSER_BAD_HEADER = 1341
+FPARSER_EOF_IN_COMMENT = 1342
+FPARSER_ERROR_IN_PARAMETER = 1343
+FPARSER_EOF_IN_UNKNOWN_PARAMETER = 1344
+VIEW_NO_EXPLAIN = 1345
+WRONG_OBJECT = 1347
+NONUPDATEABLE_COLUMN = 1348
+VIEW_SELECT_CLAUSE = 1350
+VIEW_SELECT_VARIABLE = 1351
+VIEW_SELECT_TMPTABLE = 1352
+VIEW_WRONG_LIST = 1353
+WARN_VIEW_MERGE = 1354
+WARN_VIEW_WITHOUT_KEY = 1355
+VIEW_INVALID = 1356
+SP_NO_DROP_SP = 1357
+TRG_ALREADY_EXISTS = 1359
+TRG_DOES_NOT_EXIST = 1360
+TRG_ON_VIEW_OR_TEMP_TABLE = 1361
+TRG_CANT_CHANGE_ROW = 1362
+TRG_NO_SUCH_ROW_IN_TRG = 1363
+NO_DEFAULT_FOR_FIELD = 1364
+DIVISION_BY_ZERO = 1365
+TRUNCATED_WRONG_VALUE_FOR_FIELD = 1366
+ILLEGAL_VALUE_FOR_TYPE = 1367
+VIEW_NONUPD_CHECK = 1368
+VIEW_CHECK_FAILED = 1369
+PROCACCESS_DENIED_ERROR = 1370
+RELAY_LOG_FAIL = 1371
+UNKNOWN_TARGET_BINLOG = 1373
+IO_ERR_LOG_INDEX_READ = 1374
+BINLOG_PURGE_PROHIBITED = 1375
+FSEEK_FAIL = 1376
+BINLOG_PURGE_FATAL_ERR = 1377
+LOG_IN_USE = 1378
+LOG_PURGE_UNKNOWN_ERR = 1379
+RELAY_LOG_INIT = 1380
+NO_BINARY_LOGGING = 1381
+RESERVED_SYNTAX = 1382
+PS_MANY_PARAM = 1390
+KEY_PART_0 = 1391
+VIEW_CHECKSUM = 1392
+VIEW_MULTIUPDATE = 1393
+VIEW_NO_INSERT_FIELD_LIST = 1394
+VIEW_DELETE_MERGE_VIEW = 1395
+CANNOT_USER = 1396
+XAER_NOTA = 1397
+XAER_INVAL = 1398
+XAER_RMFAIL = 1399
+XAER_OUTSIDE = 1400
+XAER_RMERR = 1401
+XA_RBROLLBACK = 1402
+NONEXISTING_PROC_GRANT = 1403
+PROC_AUTO_GRANT_FAIL = 1404
+PROC_AUTO_REVOKE_FAIL = 1405
+DATA_TOO_LONG = 1406
+SP_BAD_SQLSTATE = 1407
+STARTUP = 1408
+LOAD_FROM_FIXED_SIZE_ROWS_TO_VAR = 1409
+CANT_CREATE_USER_WITH_GRANT = 1410
+WRONG_VALUE_FOR_TYPE = 1411
+TABLE_DEF_CHANGED = 1412
+SP_DUP_HANDLER = 1413
+SP_NOT_VAR_ARG = 1414
+SP_NO_RETSET = 1415
+CANT_CREATE_GEOMETRY_OBJECT = 1416
+BINLOG_UNSAFE_ROUTINE = 1418
+BINLOG_CREATE_ROUTINE_NEED_SUPER = 1419
+STMT_HAS_NO_OPEN_CURSOR = 1421
+COMMIT_NOT_ALLOWED_IN_SF_OR_TRG = 1422
+NO_DEFAULT_FOR_VIEW_FIELD = 1423
+SP_NO_RECURSION = 1424
+TOO_BIG_SCALE = 1425
+TOO_BIG_PRECISION = 1426
+M_BIGGER_THAN_D = 1427
+WRONG_LOCK_OF_SYSTEM_TABLE = 1428
+CONNECT_TO_FOREIGN_DATA_SOURCE = 1429
+QUERY_ON_FOREIGN_DATA_SOURCE = 1430
+FOREIGN_DATA_SOURCE_DOESNT_EXIST = 1431
+FOREIGN_DATA_STRING_INVALID_CANT_CREATE = 1432
+FOREIGN_DATA_STRING_INVALID = 1433
+TRG_IN_WRONG_SCHEMA = 1435
+STACK_OVERRUN_NEED_MORE = 1436
+TOO_LONG_BODY = 1437
+WARN_CANT_DROP_DEFAULT_KEYCACHE = 1438
+TOO_BIG_DISPLAYWIDTH = 1439
+XAER_DUPID = 1440
+DATETIME_FUNCTION_OVERFLOW = 1441
+CANT_UPDATE_USED_TABLE_IN_SF_OR_TRG = 1442
+VIEW_PREVENT_UPDATE = 1443
+PS_NO_RECURSION = 1444
+SP_CANT_SET_AUTOCOMMIT = 1445
+VIEW_FRM_NO_USER = 1447
+VIEW_OTHER_USER = 1448
+NO_SUCH_USER = 1449
+FORBID_SCHEMA_CHANGE = 1450
+ROW_IS_REFERENCED_2 = 1451
+NO_REFERENCED_ROW_2 = 1452
+SP_BAD_VAR_SHADOW = 1453
+TRG_NO_DEFINER = 1454
+OLD_FILE_FORMAT = 1455
+SP_RECURSION_LIMIT = 1456
+SP_WRONG_NAME = 1458
+TABLE_NEEDS_UPGRADE = 1459
+SP_NO_AGGREGATE = 1460
+MAX_PREPARED_STMT_COUNT_REACHED = 1461
+VIEW_RECURSIVE = 1462
+NON_GROUPING_FIELD_USED = 1463
+TABLE_CANT_HANDLE_SPKEYS = 1464
+NO_TRIGGERS_ON_SYSTEM_SCHEMA = 1465
+REMOVED_SPACES = 1466
+AUTOINC_READ_FAILED = 1467
+USERNAME = 1468
+HOSTNAME = 1469
+WRONG_STRING_LENGTH = 1470
+NON_INSERTABLE_TABLE = 1471
+ADMIN_WRONG_MRG_TABLE = 1472
+TOO_HIGH_LEVEL_OF_NESTING_FOR_SELECT = 1473
+NAME_BECOMES_EMPTY = 1474
+AMBIGUOUS_FIELD_TERM = 1475
+FOREIGN_SERVER_EXISTS = 1476
+FOREIGN_SERVER_DOESNT_EXIST = 1477
+ILLEGAL_HA_CREATE_OPTION = 1478
+PARTITION_REQUIRES_VALUES_ERROR = 1479
+PARTITION_WRONG_VALUES_ERROR = 1480
+PARTITION_MAXVALUE_ERROR = 1481
+PARTITION_WRONG_NO_PART_ERROR = 1484
+PARTITION_WRONG_NO_SUBPART_ERROR = 1485
+WRONG_EXPR_IN_PARTITION_FUNC_ERROR = 1486
+FIELD_NOT_FOUND_PART_ERROR = 1488
+INCONSISTENT_PARTITION_INFO_ERROR = 1490
+PARTITION_FUNC_NOT_ALLOWED_ERROR = 1491
+PARTITIONS_MUST_BE_DEFINED_ERROR = 1492
+RANGE_NOT_INCREASING_ERROR = 1493
+INCONSISTENT_TYPE_OF_FUNCTIONS_ERROR = 1494
+MULTIPLE_DEF_CONST_IN_LIST_PART_ERROR = 1495
+PARTITION_ENTRY_ERROR = 1496
+MIX_HANDLER_ERROR = 1497
+PARTITION_NOT_DEFINED_ERROR = 1498
+TOO_MANY_PARTITIONS_ERROR = 1499
+SUBPARTITION_ERROR = 1500
+CANT_CREATE_HANDLER_FILE = 1501
+BLOB_FIELD_IN_PART_FUNC_ERROR = 1502
+UNIQUE_KEY_NEED_ALL_FIELDS_IN_PF = 1503
+NO_PARTS_ERROR = 1504
+PARTITION_MGMT_ON_NONPARTITIONED = 1505
+FOREIGN_KEY_ON_PARTITIONED = 1506
+DROP_PARTITION_NON_EXISTENT = 1507
+DROP_LAST_PARTITION = 1508
+COALESCE_ONLY_ON_HASH_PARTITION = 1509
+REORG_HASH_ONLY_ON_SAME_NO = 1510
+REORG_NO_PARAM_ERROR = 1511
+ONLY_ON_RANGE_LIST_PARTITION = 1512
+ADD_PARTITION_SUBPART_ERROR = 1513
+ADD_PARTITION_NO_NEW_PARTITION = 1514
+COALESCE_PARTITION_NO_PARTITION = 1515
+REORG_PARTITION_NOT_EXIST = 1516
+SAME_NAME_PARTITION = 1517
+NO_BINLOG_ERROR = 1518
+CONSECUTIVE_REORG_PARTITIONS = 1519
+REORG_OUTSIDE_RANGE = 1520
+PARTITION_FUNCTION_FAILURE = 1521
+LIMITED_PART_RANGE = 1523
+PLUGIN_IS_NOT_LOADED = 1524
+WRONG_VALUE = 1525
+NO_PARTITION_FOR_GIVEN_VALUE = 1526
+FILEGROUP_OPTION_ONLY_ONCE = 1527
+CREATE_FILEGROUP_FAILED = 1528
+DROP_FILEGROUP_FAILED = 1529
+TABLESPACE_AUTO_EXTEND_ERROR = 1530
+WRONG_SIZE_NUMBER = 1531
+SIZE_OVERFLOW_ERROR = 1532
+ALTER_FILEGROUP_FAILED = 1533
+BINLOG_ROW_LOGGING_FAILED = 1534
+EVENT_ALREADY_EXISTS = 1537
+EVENT_DOES_NOT_EXIST = 1539
+EVENT_INTERVAL_NOT_POSITIVE_OR_TOO_BIG = 1542
+EVENT_ENDS_BEFORE_STARTS = 1543
+EVENT_EXEC_TIME_IN_THE_PAST = 1544
+EVENT_SAME_NAME = 1551
+DROP_INDEX_FK = 1553
+WARN_DEPRECATED_SYNTAX_WITH_VER = 1554
+CANT_LOCK_LOG_TABLE = 1556
+FOREIGN_DUPLICATE_KEY_OLD_UNUSED = 1557
+COL_COUNT_DOESNT_MATCH_PLEASE_UPDATE = 1558
+TEMP_TABLE_PREVENTS_SWITCH_OUT_OF_RBR = 1559
+STORED_FUNCTION_PREVENTS_SWITCH_BINLOG_FORMAT = 1560
+PARTITION_NO_TEMPORARY = 1562
+PARTITION_CONST_DOMAIN_ERROR = 1563
+PARTITION_FUNCTION_IS_NOT_ALLOWED = 1564
+NULL_IN_VALUES_LESS_THAN = 1566
+WRONG_PARTITION_NAME = 1567
+CANT_CHANGE_TX_CHARACTERISTICS = 1568
+DUP_ENTRY_AUTOINCREMENT_CASE = 1569
+EVENT_SET_VAR_ERROR = 1571
+PARTITION_MERGE_ERROR = 1572
+BASE64_DECODE_ERROR = 1575
+EVENT_RECURSION_FORBIDDEN = 1576
+ONLY_INTEGERS_ALLOWED = 1578
+UNSUPORTED_LOG_ENGINE = 1579
+BAD_LOG_STATEMENT = 1580
+CANT_RENAME_LOG_TABLE = 1581
+WRONG_PARAMCOUNT_TO_NATIVE_FCT = 1582
+WRONG_PARAMETERS_TO_NATIVE_FCT = 1583
+WRONG_PARAMETERS_TO_STORED_FCT = 1584
+NATIVE_FCT_NAME_COLLISION = 1585
+DUP_ENTRY_WITH_KEY_NAME = 1586
+BINLOG_PURGE_EMFILE = 1587
+EVENT_CANNOT_CREATE_IN_THE_PAST = 1588
+EVENT_CANNOT_ALTER_IN_THE_PAST = 1589
+NO_PARTITION_FOR_GIVEN_VALUE_SILENT = 1591
+BINLOG_UNSAFE_STATEMENT = 1592
+BINLOG_FATAL_ERROR = 1593
+BINLOG_LOGGING_IMPOSSIBLE = 1598
+VIEW_NO_CREATION_CTX = 1599
+VIEW_INVALID_CREATION_CTX = 1600
+TRG_CORRUPTED_FILE = 1602
+TRG_NO_CREATION_CTX = 1603
+TRG_INVALID_CREATION_CTX = 1604
+EVENT_INVALID_CREATION_CTX = 1605
+TRG_CANT_OPEN_TABLE = 1606
+NO_FORMAT_DESCRIPTION_EVENT_BEFORE_BINLOG_STATEMENT = 1609
+SLAVE_CORRUPT_EVENT = 1610
+LOG_PURGE_NO_FILE = 1612
+XA_RBTIMEOUT = 1613
+XA_RBDEADLOCK = 1614
+NEED_REPREPARE = 1615
+WARN_NO_MASTER_INFO = 1617
+WARN_OPTION_IGNORED = 1618
+PLUGIN_DELETE_BUILTIN = 1619
+WARN_PLUGIN_BUSY = 1620
+VARIABLE_IS_READONLY = 1621
+WARN_ENGINE_TRANSACTION_ROLLBACK = 1622
+SLAVE_HEARTBEAT_VALUE_OUT_OF_RANGE = 1624
+NDB_REPLICATION_SCHEMA_ERROR = 1625
+CONFLICT_FN_PARSE_ERROR = 1626
+EXCEPTIONS_WRITE_ERROR = 1627
+TOO_LONG_TABLE_COMMENT = 1628
+TOO_LONG_FIELD_COMMENT = 1629
+FUNC_INEXISTENT_NAME_COLLISION = 1630
+DATABASE_NAME = 1631
+TABLE_NAME = 1632
+PARTITION_NAME = 1633
+SUBPARTITION_NAME = 1634
+TEMPORARY_NAME = 1635
+RENAMED_NAME = 1636
+TOO_MANY_CONCURRENT_TRXS = 1637
+WARN_NON_ASCII_SEPARATOR_NOT_IMPLEMENTED = 1638
+DEBUG_SYNC_TIMEOUT = 1639
+DEBUG_SYNC_HIT_LIMIT = 1640
+DUP_SIGNAL_SET = 1641
+SIGNAL_WARN = 1642
+SIGNAL_NOT_FOUND = 1643
+SIGNAL_EXCEPTION = 1644
+RESIGNAL_WITHOUT_ACTIVE_HANDLER = 1645
+SIGNAL_BAD_CONDITION_TYPE = 1646
+WARN_COND_ITEM_TRUNCATED = 1647
+COND_ITEM_TOO_LONG = 1648
+UNKNOWN_LOCALE = 1649
+SLAVE_IGNORE_SERVER_IDS = 1650
+SAME_NAME_PARTITION_FIELD = 1652
+PARTITION_COLUMN_LIST_ERROR = 1653
+WRONG_TYPE_COLUMN_VALUE_ERROR = 1654
+TOO_MANY_PARTITION_FUNC_FIELDS_ERROR = 1655
+MAXVALUE_IN_VALUES_IN = 1656
+TOO_MANY_VALUES_ERROR = 1657
+ROW_SINGLE_PARTITION_FIELD_ERROR = 1658
+FIELD_TYPE_NOT_ALLOWED_AS_PARTITION_FIELD = 1659
+PARTITION_FIELDS_TOO_LONG = 1660
+BINLOG_ROW_ENGINE_AND_STMT_ENGINE = 1661
+BINLOG_ROW_MODE_AND_STMT_ENGINE = 1662
+BINLOG_UNSAFE_AND_STMT_ENGINE = 1663
+BINLOG_ROW_INJECTION_AND_STMT_ENGINE = 1664
+BINLOG_STMT_MODE_AND_ROW_ENGINE = 1665
+BINLOG_ROW_INJECTION_AND_STMT_MODE = 1666
+BINLOG_MULTIPLE_ENGINES_AND_SELF_LOGGING_ENGINE = 1667
+BINLOG_UNSAFE_LIMIT = 1668
+BINLOG_UNSAFE_SYSTEM_TABLE = 1670
+BINLOG_UNSAFE_AUTOINC_COLUMNS = 1671
+BINLOG_UNSAFE_UDF = 1672
+BINLOG_UNSAFE_SYSTEM_VARIABLE = 1673
+BINLOG_UNSAFE_SYSTEM_FUNCTION = 1674
+BINLOG_UNSAFE_NONTRANS_AFTER_TRANS = 1675
+MESSAGE_AND_STATEMENT = 1676
+SLAVE_CANT_CREATE_CONVERSION = 1678
+INSIDE_TRANSACTION_PREVENTS_SWITCH_BINLOG_FORMAT = 1679
+PATH_LENGTH = 1680
+WARN_DEPRECATED_SYNTAX_NO_REPLACEMENT = 1681
+WRONG_NATIVE_TABLE_STRUCTURE = 1682
+WRONG_PERFSCHEMA_USAGE = 1683
+WARN_I_S_SKIPPED_TABLE = 1684
+INSIDE_TRANSACTION_PREVENTS_SWITCH_BINLOG_DIRECT = 1685
+STORED_FUNCTION_PREVENTS_SWITCH_BINLOG_DIRECT = 1686
+SPATIAL_MUST_HAVE_GEOM_COL = 1687
+TOO_LONG_INDEX_COMMENT = 1688
+LOCK_ABORTED = 1689
+DATA_OUT_OF_RANGE = 1690
+WRONG_SPVAR_TYPE_IN_LIMIT = 1691
+BINLOG_UNSAFE_MULTIPLE_ENGINES_AND_SELF_LOGGING_ENGINE = 1692
+BINLOG_UNSAFE_MIXED_STATEMENT = 1693
+INSIDE_TRANSACTION_PREVENTS_SWITCH_SQL_LOG_BIN = 1694
+STORED_FUNCTION_PREVENTS_SWITCH_SQL_LOG_BIN = 1695
+FAILED_READ_FROM_PAR_FILE = 1696
+VALUES_IS_NOT_INT_TYPE_ERROR = 1697
+ACCESS_DENIED_NO_PASSWORD_ERROR = 1698
+SET_PASSWORD_AUTH_PLUGIN = 1699
+TRUNCATE_ILLEGAL_FK = 1701
+PLUGIN_IS_PERMANENT = 1702
+SLAVE_HEARTBEAT_VALUE_OUT_OF_RANGE_MIN = 1703
+SLAVE_HEARTBEAT_VALUE_OUT_OF_RANGE_MAX = 1704
+STMT_CACHE_FULL = 1705
+MULTI_UPDATE_KEY_CONFLICT = 1706
+TABLE_NEEDS_REBUILD = 1707
+WARN_OPTION_BELOW_LIMIT = 1708
+INDEX_COLUMN_TOO_LONG = 1709
+ERROR_IN_TRIGGER_BODY = 1710
+ERROR_IN_UNKNOWN_TRIGGER_BODY = 1711
+INDEX_CORRUPT = 1712
+UNDO_RECORD_TOO_BIG = 1713
+BINLOG_UNSAFE_INSERT_IGNORE_SELECT = 1714
+BINLOG_UNSAFE_INSERT_SELECT_UPDATE = 1715
+BINLOG_UNSAFE_REPLACE_SELECT = 1716
+BINLOG_UNSAFE_CREATE_IGNORE_SELECT = 1717
+BINLOG_UNSAFE_CREATE_REPLACE_SELECT = 1718
+BINLOG_UNSAFE_UPDATE_IGNORE = 1719
+PLUGIN_NO_UNINSTALL = 1720
+PLUGIN_NO_INSTALL = 1721
+BINLOG_UNSAFE_WRITE_AUTOINC_SELECT = 1722
+BINLOG_UNSAFE_CREATE_SELECT_AUTOINC = 1723
+BINLOG_UNSAFE_INSERT_TWO_KEYS = 1724
+TABLE_IN_FK_CHECK = 1725
+UNSUPPORTED_ENGINE = 1726
+BINLOG_UNSAFE_AUTOINC_NOT_FIRST = 1727
+CANNOT_LOAD_FROM_TABLE_V2 = 1728
+MASTER_DELAY_VALUE_OUT_OF_RANGE = 1729
+ONLY_FD_AND_RBR_EVENTS_ALLOWED_IN_BINLOG_STATEMENT = 1730
+PARTITION_EXCHANGE_DIFFERENT_OPTION = 1731
+PARTITION_EXCHANGE_PART_TABLE = 1732
+PARTITION_EXCHANGE_TEMP_TABLE = 1733
+PARTITION_INSTEAD_OF_SUBPARTITION = 1734
+UNKNOWN_PARTITION = 1735
+TABLES_DIFFERENT_METADATA = 1736
+ROW_DOES_NOT_MATCH_PARTITION = 1737
+BINLOG_CACHE_SIZE_GREATER_THAN_MAX = 1738
+WARN_INDEX_NOT_APPLICABLE = 1739
+PARTITION_EXCHANGE_FOREIGN_KEY = 1740
+RPL_INFO_DATA_TOO_LONG = 1742
+BINLOG_STMT_CACHE_SIZE_GREATER_THAN_MAX = 1745
+CANT_UPDATE_TABLE_IN_CREATE_TABLE_SELECT = 1746
+PARTITION_CLAUSE_ON_NONPARTITIONED = 1747
+ROW_DOES_NOT_MATCH_GIVEN_PARTITION_SET = 1748
+CHANGE_RPL_INFO_REPOSITORY_FAILURE = 1750
+WARNING_NOT_COMPLETE_ROLLBACK_WITH_CREATED_TEMP_TABLE = 1751
+WARNING_NOT_COMPLETE_ROLLBACK_WITH_DROPPED_TEMP_TABLE = 1752
+MTS_FEATURE_IS_NOT_SUPPORTED = 1753
+MTS_UPDATED_DBS_GREATER_MAX = 1754
+MTS_CANT_PARALLEL = 1755
+MTS_INCONSISTENT_DATA = 1756
+FULLTEXT_NOT_SUPPORTED_WITH_PARTITIONING = 1757
+DA_INVALID_CONDITION_NUMBER = 1758
+INSECURE_PLAIN_TEXT = 1759
+INSECURE_CHANGE_MASTER = 1760
+FOREIGN_DUPLICATE_KEY_WITH_CHILD_INFO = 1761
+FOREIGN_DUPLICATE_KEY_WITHOUT_CHILD_INFO = 1762
+SQLTHREAD_WITH_SECURE_SLAVE = 1763
+TABLE_HAS_NO_FT = 1764
+VARIABLE_NOT_SETTABLE_IN_SF_OR_TRIGGER = 1765
+VARIABLE_NOT_SETTABLE_IN_TRANSACTION = 1766
+SET_STATEMENT_CANNOT_INVOKE_FUNCTION = 1769
+GTID_NEXT_CANT_BE_AUTOMATIC_IF_GTID_NEXT_LIST_IS_NON_NULL = 1770
+MALFORMED_GTID_SET_SPECIFICATION = 1772
+MALFORMED_GTID_SET_ENCODING = 1773
+MALFORMED_GTID_SPECIFICATION = 1774
+GNO_EXHAUSTED = 1775
+BAD_SLAVE_AUTO_POSITION = 1776
+AUTO_POSITION_REQUIRES_GTID_MODE_NOT_OFF = 1777
+CANT_DO_IMPLICIT_COMMIT_IN_TRX_WHEN_GTID_NEXT_IS_SET = 1778
+GTID_MODE_ON_REQUIRES_ENFORCE_GTID_CONSISTENCY_ON = 1779
+CANT_SET_GTID_NEXT_TO_GTID_WHEN_GTID_MODE_IS_OFF = 1781
+CANT_SET_GTID_NEXT_TO_ANONYMOUS_WHEN_GTID_MODE_IS_ON = 1782
+CANT_SET_GTID_NEXT_LIST_TO_NON_NULL_WHEN_GTID_MODE_IS_OFF = 1783
+GTID_UNSAFE_NON_TRANSACTIONAL_TABLE = 1785
+GTID_UNSAFE_CREATE_SELECT = 1786
+GTID_UNSAFE_CREATE_DROP_TEMPORARY_TABLE_IN_TRANSACTION = 1787
+GTID_MODE_CAN_ONLY_CHANGE_ONE_STEP_AT_A_TIME = 1788
+MASTER_HAS_PURGED_REQUIRED_GTIDS = 1789
+CANT_SET_GTID_NEXT_WHEN_OWNING_GTID = 1790
+UNKNOWN_EXPLAIN_FORMAT = 1791
+CANT_EXECUTE_IN_READ_ONLY_TRANSACTION = 1792
+TOO_LONG_TABLE_PARTITION_COMMENT = 1793
+SLAVE_CONFIGURATION = 1794
+INNODB_FT_LIMIT = 1795
+INNODB_NO_FT_TEMP_TABLE = 1796
+INNODB_FT_WRONG_DOCID_COLUMN = 1797
+INNODB_FT_WRONG_DOCID_INDEX = 1798
+INNODB_ONLINE_LOG_TOO_BIG = 1799
+UNKNOWN_ALTER_ALGORITHM = 1800
+UNKNOWN_ALTER_LOCK = 1801
+MTS_CHANGE_MASTER_CANT_RUN_WITH_GAPS = 1802
+MTS_RECOVERY_FAILURE = 1803
+MTS_RESET_WORKERS = 1804
+COL_COUNT_DOESNT_MATCH_CORRUPTED_V2 = 1805
+SLAVE_SILENT_RETRY_TRANSACTION = 1806
+DISCARD_FK_CHECKS_RUNNING = 1807
+TABLE_SCHEMA_MISMATCH = 1808
+TABLE_IN_SYSTEM_TABLESPACE = 1809
+IO_READ_ERROR = 1810
+IO_WRITE_ERROR = 1811
+TABLESPACE_MISSING = 1812
+TABLESPACE_EXISTS = 1813
+TABLESPACE_DISCARDED = 1814
+INTERNAL_ERROR = 1815
+INNODB_IMPORT_ERROR = 1816
+INNODB_INDEX_CORRUPT = 1817
+INVALID_YEAR_COLUMN_LENGTH = 1818
+NOT_VALID_PASSWORD = 1819
+MUST_CHANGE_PASSWORD = 1820
+FK_NO_INDEX_CHILD = 1821
+FK_NO_INDEX_PARENT = 1822
+FK_FAIL_ADD_SYSTEM = 1823
+FK_CANNOT_OPEN_PARENT = 1824
+FK_INCORRECT_OPTION = 1825
+FK_DUP_NAME = 1826
+PASSWORD_FORMAT = 1827
+FK_COLUMN_CANNOT_DROP = 1828
+FK_COLUMN_CANNOT_DROP_CHILD = 1829
+FK_COLUMN_NOT_NULL = 1830
+DUP_INDEX = 1831
+FK_COLUMN_CANNOT_CHANGE = 1832
+FK_COLUMN_CANNOT_CHANGE_CHILD = 1833
+MALFORMED_PACKET = 1835
+READ_ONLY_MODE = 1836
+GTID_NEXT_TYPE_UNDEFINED_GTID = 1837
+VARIABLE_NOT_SETTABLE_IN_SP = 1838
+CANT_SET_GTID_PURGED_WHEN_GTID_EXECUTED_IS_NOT_EMPTY = 1840
+CANT_SET_GTID_PURGED_WHEN_OWNED_GTIDS_IS_NOT_EMPTY = 1841
+GTID_PURGED_WAS_CHANGED = 1842
+GTID_EXECUTED_WAS_CHANGED = 1843
+BINLOG_STMT_MODE_AND_NO_REPL_TABLES = 1844
+ALTER_OPERATION_NOT_SUPPORTED = 1845
+ALTER_OPERATION_NOT_SUPPORTED_REASON = 1846
+ALTER_OPERATION_NOT_SUPPORTED_REASON_COPY = 1847
+ALTER_OPERATION_NOT_SUPPORTED_REASON_PARTITION = 1848
+ALTER_OPERATION_NOT_SUPPORTED_REASON_FK_RENAME = 1849
+ALTER_OPERATION_NOT_SUPPORTED_REASON_COLUMN_TYPE = 1850
+ALTER_OPERATION_NOT_SUPPORTED_REASON_FK_CHECK = 1851
+ALTER_OPERATION_NOT_SUPPORTED_REASON_NOPK = 1853
+ALTER_OPERATION_NOT_SUPPORTED_REASON_AUTOINC = 1854
+ALTER_OPERATION_NOT_SUPPORTED_REASON_HIDDEN_FTS = 1855
+ALTER_OPERATION_NOT_SUPPORTED_REASON_CHANGE_FTS = 1856
+ALTER_OPERATION_NOT_SUPPORTED_REASON_FTS = 1857
+SQL_SLAVE_SKIP_COUNTER_NOT_SETTABLE_IN_GTID_MODE = 1858
+DUP_UNKNOWN_IN_INDEX = 1859
+IDENT_CAUSES_TOO_LONG_PATH = 1860
+ALTER_OPERATION_NOT_SUPPORTED_REASON_NOT_NULL = 1861
+MUST_CHANGE_PASSWORD_LOGIN = 1862
+ROW_IN_WRONG_PARTITION = 1863
+MTS_EVENT_BIGGER_PENDING_JOBS_SIZE_MAX = 1864
+BINLOG_LOGICAL_CORRUPTION = 1866
+WARN_PURGE_LOG_IN_USE = 1867
+WARN_PURGE_LOG_IS_ACTIVE = 1868
+AUTO_INCREMENT_CONFLICT = 1869
+WARN_ON_BLOCKHOLE_IN_RBR = 1870
+SLAVE_MI_INIT_REPOSITORY = 1871
+SLAVE_RLI_INIT_REPOSITORY = 1872
+ACCESS_DENIED_CHANGE_USER_ERROR = 1873
+INNODB_READ_ONLY = 1874
+STOP_SLAVE_SQL_THREAD_TIMEOUT = 1875
+STOP_SLAVE_IO_THREAD_TIMEOUT = 1876
+TABLE_CORRUPT = 1877
+TEMP_FILE_WRITE_FAILURE = 1878
+INNODB_FT_AUX_NOT_HEX_ID = 1879
+OLD_TEMPORALS_UPGRADED = 1880
+INNODB_FORCED_RECOVERY = 1881
+AES_INVALID_IV = 1882
+PLUGIN_CANNOT_BE_UNINSTALLED = 1883
+GTID_UNSAFE_BINLOG_SPLITTABLE_STATEMENT_AND_ASSIGNED_GTID = 1884
+SLAVE_HAS_MORE_GTIDS_THAN_MASTER = 1885
+MISSING_KEY = 1886
+ERROR_LAST = 1973
diff --git a/venv/Lib/site-packages/MySQLdb/constants/FIELD_TYPE.py b/venv/Lib/site-packages/MySQLdb/constants/FIELD_TYPE.py
index 3c4eca9f700dc44cacf7a39d6e1c2290aa4a5458..526215ca385c05d4c17c91337ba40a88727a86d0 100644
--- a/venv/Lib/site-packages/MySQLdb/constants/FIELD_TYPE.py
+++ b/venv/Lib/site-packages/MySQLdb/constants/FIELD_TYPE.py
@@ -1,40 +1,40 @@
-"""MySQL FIELD_TYPE Constants
-
-These constants represent the various column (field) types that are
-supported by MySQL.
-"""
-
-DECIMAL = 0
-TINY = 1
-SHORT = 2
-LONG = 3
-FLOAT = 4
-DOUBLE = 5
-NULL = 6
-TIMESTAMP = 7
-LONGLONG = 8
-INT24 = 9
-DATE = 10
-TIME = 11
-DATETIME = 12
-YEAR = 13
-# NEWDATE = 14  # Internal to MySQL.
-VARCHAR = 15
-BIT = 16
-# TIMESTAMP2 = 17
-# DATETIME2 = 18
-# TIME2 = 19
-JSON = 245
-NEWDECIMAL = 246
-ENUM = 247
-SET = 248
-TINY_BLOB = 249
-MEDIUM_BLOB = 250
-LONG_BLOB = 251
-BLOB = 252
-VAR_STRING = 253
-STRING = 254
-GEOMETRY = 255
-
-CHAR = TINY
-INTERVAL = ENUM
+"""MySQL FIELD_TYPE Constants
+
+These constants represent the various column (field) types that are
+supported by MySQL.
+"""
+
+DECIMAL = 0
+TINY = 1
+SHORT = 2
+LONG = 3
+FLOAT = 4
+DOUBLE = 5
+NULL = 6
+TIMESTAMP = 7
+LONGLONG = 8
+INT24 = 9
+DATE = 10
+TIME = 11
+DATETIME = 12
+YEAR = 13
+# NEWDATE = 14  # Internal to MySQL.
+VARCHAR = 15
+BIT = 16
+# TIMESTAMP2 = 17
+# DATETIME2 = 18
+# TIME2 = 19
+JSON = 245
+NEWDECIMAL = 246
+ENUM = 247
+SET = 248
+TINY_BLOB = 249
+MEDIUM_BLOB = 250
+LONG_BLOB = 251
+BLOB = 252
+VAR_STRING = 253
+STRING = 254
+GEOMETRY = 255
+
+CHAR = TINY
+INTERVAL = ENUM
diff --git a/venv/Lib/site-packages/MySQLdb/constants/FLAG.py b/venv/Lib/site-packages/MySQLdb/constants/FLAG.py
index 00e6c7c0b95799c7b1e403b4c79af9866be8a95b..49a7a0daf6174b9f39b0fb051a3481109a96fdc6 100644
--- a/venv/Lib/site-packages/MySQLdb/constants/FLAG.py
+++ b/venv/Lib/site-packages/MySQLdb/constants/FLAG.py
@@ -1,23 +1,23 @@
-"""MySQL FLAG Constants
-
-These flags are used along with the FIELD_TYPE to indicate various
-properties of columns in a result set.
-
-"""
-
-NOT_NULL = 1
-PRI_KEY = 2
-UNIQUE_KEY = 4
-MULTIPLE_KEY = 8
-BLOB = 16
-UNSIGNED = 32
-ZEROFILL = 64
-BINARY = 128
-ENUM = 256
-AUTO_INCREMENT = 512
-TIMESTAMP = 1024
-SET = 2048
-NUM = 32768
-PART_KEY = 16384
-GROUP = 32768
-UNIQUE = 65536
+"""MySQL FLAG Constants
+
+These flags are used along with the FIELD_TYPE to indicate various
+properties of columns in a result set.
+
+"""
+
+NOT_NULL = 1
+PRI_KEY = 2
+UNIQUE_KEY = 4
+MULTIPLE_KEY = 8
+BLOB = 16
+UNSIGNED = 32
+ZEROFILL = 64
+BINARY = 128
+ENUM = 256
+AUTO_INCREMENT = 512
+TIMESTAMP = 1024
+SET = 2048
+NUM = 32768
+PART_KEY = 16384
+GROUP = 32768
+UNIQUE = 65536
diff --git a/venv/Lib/site-packages/MySQLdb/constants/__init__.py b/venv/Lib/site-packages/MySQLdb/constants/__init__.py
index 0372265baf9b88b67e9cc05d8ef66ae0d619db9f..935455ba24149cc1481c3f3bb249ac00aa8d9116 100644
--- a/venv/Lib/site-packages/MySQLdb/constants/__init__.py
+++ b/venv/Lib/site-packages/MySQLdb/constants/__init__.py
@@ -1 +1 @@
-__all__ = ["CR", "FIELD_TYPE", "CLIENT", "ER", "FLAG"]
+__all__ = ["CR", "FIELD_TYPE", "CLIENT", "ER", "FLAG"]
diff --git a/venv/Lib/site-packages/MySQLdb/converters.py b/venv/Lib/site-packages/MySQLdb/converters.py
index 33f22f74c152fa3bd6d62816c59dc808853f34d1..e507ccfc739fa5465f2cfb0e78d84343d7f5f45b 100644
--- a/venv/Lib/site-packages/MySQLdb/converters.py
+++ b/venv/Lib/site-packages/MySQLdb/converters.py
@@ -1,139 +1,139 @@
-"""MySQLdb type conversion module
-
-This module handles all the type conversions for MySQL. If the default
-type conversions aren't what you need, you can make your own. The
-dictionary conversions maps some kind of type to a conversion function
-which returns the corresponding value:
-
-Key: FIELD_TYPE.* (from MySQLdb.constants)
-
-Conversion function:
-
-    Arguments: string
-
-    Returns: Python object
-
-Key: Python type object (from types) or class
-
-Conversion function:
-
-    Arguments: Python object of indicated type or class AND
-               conversion dictionary
-
-    Returns: SQL literal value
-
-    Notes: Most conversion functions can ignore the dictionary, but
-           it is a required parameter. It is necessary for converting
-           things like sequences and instances.
-
-Don't modify conversions if you can avoid it. Instead, make copies
-(with the copy() method), modify the copies, and then pass them to
-MySQL.connect().
-"""
-from decimal import Decimal
-
-from MySQLdb._mysql import string_literal
-from MySQLdb.constants import FIELD_TYPE, FLAG
-from MySQLdb.times import (
-    Date,
-    DateTimeType,
-    DateTime2literal,
-    DateTimeDeltaType,
-    DateTimeDelta2literal,
-    DateTime_or_None,
-    TimeDelta_or_None,
-    Date_or_None,
-)
-from MySQLdb._exceptions import ProgrammingError
-
-import array
-
-NoneType = type(None)
-
-try:
-    ArrayType = array.ArrayType
-except AttributeError:
-    ArrayType = array.array
-
-
-def Bool2Str(s, d):
-    return b"1" if s else b"0"
-
-
-def Set2Str(s, d):
-    # Only support ascii string.  Not tested.
-    return string_literal(",".join(s))
-
-
-def Thing2Str(s, d):
-    """Convert something into a string via str()."""
-    return str(s)
-
-
-def Float2Str(o, d):
-    s = repr(o)
-    if s in ("inf", "nan"):
-        raise ProgrammingError("%s can not be used with MySQL" % s)
-    if "e" not in s:
-        s += "e0"
-    return s
-
-
-def None2NULL(o, d):
-    """Convert None to NULL."""
-    return b"NULL"
-
-
-def Thing2Literal(o, d):
-    """Convert something into a SQL string literal.  If using
-    MySQL-3.23 or newer, string_literal() is a method of the
-    _mysql.MYSQL object, and this function will be overridden with
-    that method when the connection is created."""
-    return string_literal(o)
-
-
-def Decimal2Literal(o, d):
-    return format(o, "f")
-
-
-def array2Str(o, d):
-    return Thing2Literal(o.tostring(), d)
-
-
-# bytes or str regarding to BINARY_FLAG.
-_bytes_or_str = ((FLAG.BINARY, bytes), (None, str))
-
-conversions = {
-    int: Thing2Str,
-    float: Float2Str,
-    NoneType: None2NULL,
-    ArrayType: array2Str,
-    bool: Bool2Str,
-    Date: Thing2Literal,
-    DateTimeType: DateTime2literal,
-    DateTimeDeltaType: DateTimeDelta2literal,
-    set: Set2Str,
-    Decimal: Decimal2Literal,
-    FIELD_TYPE.TINY: int,
-    FIELD_TYPE.SHORT: int,
-    FIELD_TYPE.LONG: int,
-    FIELD_TYPE.FLOAT: float,
-    FIELD_TYPE.DOUBLE: float,
-    FIELD_TYPE.DECIMAL: Decimal,
-    FIELD_TYPE.NEWDECIMAL: Decimal,
-    FIELD_TYPE.LONGLONG: int,
-    FIELD_TYPE.INT24: int,
-    FIELD_TYPE.YEAR: int,
-    FIELD_TYPE.TIMESTAMP: DateTime_or_None,
-    FIELD_TYPE.DATETIME: DateTime_or_None,
-    FIELD_TYPE.TIME: TimeDelta_or_None,
-    FIELD_TYPE.DATE: Date_or_None,
-    FIELD_TYPE.TINY_BLOB: bytes,
-    FIELD_TYPE.MEDIUM_BLOB: bytes,
-    FIELD_TYPE.LONG_BLOB: bytes,
-    FIELD_TYPE.BLOB: bytes,
-    FIELD_TYPE.STRING: bytes,
-    FIELD_TYPE.VAR_STRING: bytes,
-    FIELD_TYPE.VARCHAR: bytes,
-    FIELD_TYPE.JSON: bytes,
-}
+"""MySQLdb type conversion module
+
+This module handles all the type conversions for MySQL. If the default
+type conversions aren't what you need, you can make your own. The
+dictionary conversions maps some kind of type to a conversion function
+which returns the corresponding value:
+
+Key: FIELD_TYPE.* (from MySQLdb.constants)
+
+Conversion function:
+
+    Arguments: string
+
+    Returns: Python object
+
+Key: Python type object (from types) or class
+
+Conversion function:
+
+    Arguments: Python object of indicated type or class AND
+               conversion dictionary
+
+    Returns: SQL literal value
+
+    Notes: Most conversion functions can ignore the dictionary, but
+           it is a required parameter. It is necessary for converting
+           things like sequences and instances.
+
+Don't modify conversions if you can avoid it. Instead, make copies
+(with the copy() method), modify the copies, and then pass them to
+MySQL.connect().
+"""
+from decimal import Decimal
+
+from MySQLdb._mysql import string_literal
+from MySQLdb.constants import FIELD_TYPE, FLAG
+from MySQLdb.times import (
+    Date,
+    DateTimeType,
+    DateTime2literal,
+    DateTimeDeltaType,
+    DateTimeDelta2literal,
+    DateTime_or_None,
+    TimeDelta_or_None,
+    Date_or_None,
+)
+from MySQLdb._exceptions import ProgrammingError
+
+import array
+
+NoneType = type(None)
+
+try:
+    ArrayType = array.ArrayType
+except AttributeError:
+    ArrayType = array.array
+
+
+def Bool2Str(s, d):
+    return b"1" if s else b"0"
+
+
+def Set2Str(s, d):
+    # Only support ascii string.  Not tested.
+    return string_literal(",".join(s))
+
+
+def Thing2Str(s, d):
+    """Convert something into a string via str()."""
+    return str(s)
+
+
+def Float2Str(o, d):
+    s = repr(o)
+    if s in ("inf", "nan"):
+        raise ProgrammingError("%s can not be used with MySQL" % s)
+    if "e" not in s:
+        s += "e0"
+    return s
+
+
+def None2NULL(o, d):
+    """Convert None to NULL."""
+    return b"NULL"
+
+
+def Thing2Literal(o, d):
+    """Convert something into a SQL string literal.  If using
+    MySQL-3.23 or newer, string_literal() is a method of the
+    _mysql.MYSQL object, and this function will be overridden with
+    that method when the connection is created."""
+    return string_literal(o)
+
+
+def Decimal2Literal(o, d):
+    return format(o, "f")
+
+
+def array2Str(o, d):
+    return Thing2Literal(o.tostring(), d)
+
+
+# bytes or str regarding to BINARY_FLAG.
+_bytes_or_str = ((FLAG.BINARY, bytes), (None, str))
+
+conversions = {
+    int: Thing2Str,
+    float: Float2Str,
+    NoneType: None2NULL,
+    ArrayType: array2Str,
+    bool: Bool2Str,
+    Date: Thing2Literal,
+    DateTimeType: DateTime2literal,
+    DateTimeDeltaType: DateTimeDelta2literal,
+    set: Set2Str,
+    Decimal: Decimal2Literal,
+    FIELD_TYPE.TINY: int,
+    FIELD_TYPE.SHORT: int,
+    FIELD_TYPE.LONG: int,
+    FIELD_TYPE.FLOAT: float,
+    FIELD_TYPE.DOUBLE: float,
+    FIELD_TYPE.DECIMAL: Decimal,
+    FIELD_TYPE.NEWDECIMAL: Decimal,
+    FIELD_TYPE.LONGLONG: int,
+    FIELD_TYPE.INT24: int,
+    FIELD_TYPE.YEAR: int,
+    FIELD_TYPE.TIMESTAMP: DateTime_or_None,
+    FIELD_TYPE.DATETIME: DateTime_or_None,
+    FIELD_TYPE.TIME: TimeDelta_or_None,
+    FIELD_TYPE.DATE: Date_or_None,
+    FIELD_TYPE.TINY_BLOB: bytes,
+    FIELD_TYPE.MEDIUM_BLOB: bytes,
+    FIELD_TYPE.LONG_BLOB: bytes,
+    FIELD_TYPE.BLOB: bytes,
+    FIELD_TYPE.STRING: bytes,
+    FIELD_TYPE.VAR_STRING: bytes,
+    FIELD_TYPE.VARCHAR: bytes,
+    FIELD_TYPE.JSON: bytes,
+}
diff --git a/venv/Lib/site-packages/MySQLdb/cursors.py b/venv/Lib/site-packages/MySQLdb/cursors.py
index 451dab5fab4503b5d95a498d2372fd451c82522e..320014c51a53e557984ee13f7ec95a0474c3b4a1 100644
--- a/venv/Lib/site-packages/MySQLdb/cursors.py
+++ b/venv/Lib/site-packages/MySQLdb/cursors.py
@@ -1,489 +1,489 @@
-"""MySQLdb Cursors
-
-This module implements Cursors of various types for MySQLdb. By
-default, MySQLdb uses the Cursor class.
-"""
-import re
-
-from ._exceptions import ProgrammingError
-
-
-#: Regular expression for :meth:`Cursor.executemany`.
-#: executemany only supports simple bulk insert.
-#: You can use it to load large dataset.
-RE_INSERT_VALUES = re.compile(
-    "".join(
-        [
-            r"\s*((?:INSERT|REPLACE)\b.+\bVALUES?\s*)",
-            r"(\(\s*(?:%s|%\(.+\)s)\s*(?:,\s*(?:%s|%\(.+\)s)\s*)*\))",
-            r"(\s*(?:ON DUPLICATE.*)?);?\s*\Z",
-        ]
-    ),
-    re.IGNORECASE | re.DOTALL,
-)
-
-
-class BaseCursor:
-    """A base for Cursor classes. Useful attributes:
-
-    description
-        A tuple of DB API 7-tuples describing the columns in
-        the last executed query; see PEP-249 for details.
-
-    description_flags
-        Tuple of column flags for last query, one entry per column
-        in the result set. Values correspond to those in
-        MySQLdb.constants.FLAG. See MySQL documentation (C API)
-        for more information. Non-standard extension.
-
-    arraysize
-        default number of rows fetchmany() will fetch
-    """
-
-    #: Max statement size which :meth:`executemany` generates.
-    #:
-    #: Max size of allowed statement is max_allowed_packet - packet_header_size.
-    #: Default value of max_allowed_packet is 1048576.
-    max_stmt_length = 64 * 1024
-
-    from ._exceptions import (
-        MySQLError,
-        Warning,
-        Error,
-        InterfaceError,
-        DatabaseError,
-        DataError,
-        OperationalError,
-        IntegrityError,
-        InternalError,
-        ProgrammingError,
-        NotSupportedError,
-    )
-
-    connection = None
-
-    def __init__(self, connection):
-        self.connection = connection
-        self.description = None
-        self.description_flags = None
-        self.rowcount = -1
-        self.arraysize = 1
-        self._executed = None
-
-        self.lastrowid = None
-        self._result = None
-        self.rownumber = None
-        self._rows = None
-
-    def close(self):
-        """Close the cursor. No further queries will be possible."""
-        try:
-            if self.connection is None:
-                return
-            while self.nextset():
-                pass
-        finally:
-            self.connection = None
-            self._result = None
-
-    def __enter__(self):
-        return self
-
-    def __exit__(self, *exc_info):
-        del exc_info
-        self.close()
-
-    def _escape_args(self, args, conn):
-        encoding = conn.encoding
-        literal = conn.literal
-
-        def ensure_bytes(x):
-            if isinstance(x, str):
-                return x.encode(encoding)
-            elif isinstance(x, tuple):
-                return tuple(map(ensure_bytes, x))
-            elif isinstance(x, list):
-                return list(map(ensure_bytes, x))
-            return x
-
-        if isinstance(args, (tuple, list)):
-            ret = tuple(literal(ensure_bytes(arg)) for arg in args)
-        elif isinstance(args, dict):
-            ret = {
-                ensure_bytes(key): literal(ensure_bytes(val))
-                for (key, val) in args.items()
-            }
-        else:
-            # If it's not a dictionary let's try escaping it anyways.
-            # Worst case it will throw a Value error
-            ret = literal(ensure_bytes(args))
-
-        ensure_bytes = None  # break circular reference
-        return ret
-
-    def _check_executed(self):
-        if not self._executed:
-            raise ProgrammingError("execute() first")
-
-    def nextset(self):
-        """Advance to the next result set.
-
-        Returns None if there are no more result sets.
-        """
-        if self._executed:
-            self.fetchall()
-
-        db = self._get_db()
-        nr = db.next_result()
-        if nr == -1:
-            return None
-        self._do_get_result(db)
-        self._post_get_result()
-        return 1
-
-    def _do_get_result(self, db):
-        self._result = result = self._get_result()
-        if result is None:
-            self.description = self.description_flags = None
-        else:
-            self.description = result.describe()
-            self.description_flags = result.field_flags()
-
-        self.rowcount = db.affected_rows()
-        self.rownumber = 0
-        self.lastrowid = db.insert_id()
-
-    def _post_get_result(self):
-        pass
-
-    def setinputsizes(self, *args):
-        """Does nothing, required by DB API."""
-
-    def setoutputsizes(self, *args):
-        """Does nothing, required by DB API."""
-
-    def _get_db(self):
-        con = self.connection
-        if con is None:
-            raise ProgrammingError("cursor closed")
-        return con
-
-    def execute(self, query, args=None):
-        """Execute a query.
-
-        query -- string, query to execute on server
-        args -- optional sequence or mapping, parameters to use with query.
-
-        Note: If args is a sequence, then %s must be used as the
-        parameter placeholder in the query. If a mapping is used,
-        %(key)s must be used as the placeholder.
-
-        Returns integer represents rows affected, if any
-        """
-        while self.nextset():
-            pass
-        db = self._get_db()
-
-        if isinstance(query, str):
-            query = query.encode(db.encoding)
-
-        if args is not None:
-            if isinstance(args, dict):
-                nargs = {}
-                for key, item in args.items():
-                    if isinstance(key, str):
-                        key = key.encode(db.encoding)
-                    nargs[key] = db.literal(item)
-                args = nargs
-            else:
-                args = tuple(map(db.literal, args))
-            try:
-                query = query % args
-            except TypeError as m:
-                raise ProgrammingError(str(m))
-
-        assert isinstance(query, (bytes, bytearray))
-        res = self._query(query)
-        return res
-
-    def executemany(self, query, args):
-        # type: (str, list) -> int
-        """Execute a multi-row query.
-
-        :param query: query to execute on server
-        :param args:  Sequence of sequences or mappings.  It is used as parameter.
-        :return: Number of rows affected, if any.
-
-        This method improves performance on multiple-row INSERT and
-        REPLACE. Otherwise it is equivalent to looping over args with
-        execute().
-        """
-        if not args:
-            return
-
-        m = RE_INSERT_VALUES.match(query)
-        if m:
-            q_prefix = m.group(1) % ()
-            q_values = m.group(2).rstrip()
-            q_postfix = m.group(3) or ""
-            assert q_values[0] == "(" and q_values[-1] == ")"
-            return self._do_execute_many(
-                q_prefix,
-                q_values,
-                q_postfix,
-                args,
-                self.max_stmt_length,
-                self._get_db().encoding,
-            )
-
-        self.rowcount = sum(self.execute(query, arg) for arg in args)
-        return self.rowcount
-
-    def _do_execute_many(
-        self, prefix, values, postfix, args, max_stmt_length, encoding
-    ):
-        conn = self._get_db()
-        escape = self._escape_args
-        if isinstance(prefix, str):
-            prefix = prefix.encode(encoding)
-        if isinstance(values, str):
-            values = values.encode(encoding)
-        if isinstance(postfix, str):
-            postfix = postfix.encode(encoding)
-        sql = bytearray(prefix)
-        args = iter(args)
-        v = values % escape(next(args), conn)
-        sql += v
-        rows = 0
-        for arg in args:
-            v = values % escape(arg, conn)
-            if len(sql) + len(v) + len(postfix) + 1 > max_stmt_length:
-                rows += self.execute(sql + postfix)
-                sql = bytearray(prefix)
-            else:
-                sql += b","
-            sql += v
-        rows += self.execute(sql + postfix)
-        self.rowcount = rows
-        return rows
-
-    def callproc(self, procname, args=()):
-        """Execute stored procedure procname with args
-
-        procname -- string, name of procedure to execute on server
-
-        args -- Sequence of parameters to use with procedure
-
-        Returns the original args.
-
-        Compatibility warning: PEP-249 specifies that any modified
-        parameters must be returned. This is currently impossible
-        as they are only available by storing them in a server
-        variable and then retrieved by a query. Since stored
-        procedures return zero or more result sets, there is no
-        reliable way to get at OUT or INOUT parameters via callproc.
-        The server variables are named @_procname_n, where procname
-        is the parameter above and n is the position of the parameter
-        (from zero). Once all result sets generated by the procedure
-        have been fetched, you can issue a SELECT @_procname_0, ...
-        query using .execute() to get any OUT or INOUT values.
-
-        Compatibility warning: The act of calling a stored procedure
-        itself creates an empty result set. This appears after any
-        result sets generated by the procedure. This is non-standard
-        behavior with respect to the DB-API. Be sure to use nextset()
-        to advance through all result sets; otherwise you may get
-        disconnected.
-        """
-        db = self._get_db()
-        if isinstance(procname, str):
-            procname = procname.encode(db.encoding)
-        if args:
-            fmt = b"@_" + procname + b"_%d=%s"
-            q = b"SET %s" % b",".join(
-                fmt % (index, db.literal(arg)) for index, arg in enumerate(args)
-            )
-            self._query(q)
-            self.nextset()
-
-        q = b"CALL %s(%s)" % (
-            procname,
-            b",".join([b"@_%s_%d" % (procname, i) for i in range(len(args))]),
-        )
-        self._query(q)
-        return args
-
-    def _query(self, q):
-        db = self._get_db()
-        self._result = None
-        db.query(q)
-        self._do_get_result(db)
-        self._post_get_result()
-        self._executed = q
-        return self.rowcount
-
-    def _fetch_row(self, size=1):
-        if not self._result:
-            return ()
-        return self._result.fetch_row(size, self._fetch_type)
-
-    def __iter__(self):
-        return iter(self.fetchone, None)
-
-    Warning = Warning
-    Error = Error
-    InterfaceError = InterfaceError
-    DatabaseError = DatabaseError
-    DataError = DataError
-    OperationalError = OperationalError
-    IntegrityError = IntegrityError
-    InternalError = InternalError
-    ProgrammingError = ProgrammingError
-    NotSupportedError = NotSupportedError
-
-
-class CursorStoreResultMixIn:
-    """This is a MixIn class which causes the entire result set to be
-    stored on the client side, i.e. it uses mysql_store_result(). If the
-    result set can be very large, consider adding a LIMIT clause to your
-    query, or using CursorUseResultMixIn instead."""
-
-    def _get_result(self):
-        return self._get_db().store_result()
-
-    def _post_get_result(self):
-        self._rows = self._fetch_row(0)
-        self._result = None
-
-    def fetchone(self):
-        """Fetches a single row from the cursor. None indicates that
-        no more rows are available."""
-        self._check_executed()
-        if self.rownumber >= len(self._rows):
-            return None
-        result = self._rows[self.rownumber]
-        self.rownumber = self.rownumber + 1
-        return result
-
-    def fetchmany(self, size=None):
-        """Fetch up to size rows from the cursor. Result set may be smaller
-        than size. If size is not defined, cursor.arraysize is used."""
-        self._check_executed()
-        end = self.rownumber + (size or self.arraysize)
-        result = self._rows[self.rownumber : end]
-        self.rownumber = min(end, len(self._rows))
-        return result
-
-    def fetchall(self):
-        """Fetchs all available rows from the cursor."""
-        self._check_executed()
-        if self.rownumber:
-            result = self._rows[self.rownumber :]
-        else:
-            result = self._rows
-        self.rownumber = len(self._rows)
-        return result
-
-    def scroll(self, value, mode="relative"):
-        """Scroll the cursor in the result set to a new position according
-        to mode.
-
-        If mode is 'relative' (default), value is taken as offset to
-        the current position in the result set, if set to 'absolute',
-        value states an absolute target position."""
-        self._check_executed()
-        if mode == "relative":
-            r = self.rownumber + value
-        elif mode == "absolute":
-            r = value
-        else:
-            raise ProgrammingError("unknown scroll mode %s" % repr(mode))
-        if r < 0 or r >= len(self._rows):
-            raise IndexError("out of range")
-        self.rownumber = r
-
-    def __iter__(self):
-        self._check_executed()
-        result = self.rownumber and self._rows[self.rownumber :] or self._rows
-        return iter(result)
-
-
-class CursorUseResultMixIn:
-
-    """This is a MixIn class which causes the result set to be stored
-    in the server and sent row-by-row to client side, i.e. it uses
-    mysql_use_result(). You MUST retrieve the entire result set and
-    close() the cursor before additional queries can be performed on
-    the connection."""
-
-    def _get_result(self):
-        return self._get_db().use_result()
-
-    def fetchone(self):
-        """Fetches a single row from the cursor."""
-        self._check_executed()
-        r = self._fetch_row(1)
-        if not r:
-            return None
-        self.rownumber = self.rownumber + 1
-        return r[0]
-
-    def fetchmany(self, size=None):
-        """Fetch up to size rows from the cursor. Result set may be smaller
-        than size. If size is not defined, cursor.arraysize is used."""
-        self._check_executed()
-        r = self._fetch_row(size or self.arraysize)
-        self.rownumber = self.rownumber + len(r)
-        return r
-
-    def fetchall(self):
-        """Fetchs all available rows from the cursor."""
-        self._check_executed()
-        r = self._fetch_row(0)
-        self.rownumber = self.rownumber + len(r)
-        return r
-
-    def __iter__(self):
-        return self
-
-    def next(self):
-        row = self.fetchone()
-        if row is None:
-            raise StopIteration
-        return row
-
-    __next__ = next
-
-
-class CursorTupleRowsMixIn:
-    """This is a MixIn class that causes all rows to be returned as tuples,
-    which is the standard form required by DB API."""
-
-    _fetch_type = 0
-
-
-class CursorDictRowsMixIn:
-    """This is a MixIn class that causes all rows to be returned as
-    dictionaries. This is a non-standard feature."""
-
-    _fetch_type = 1
-
-
-class Cursor(CursorStoreResultMixIn, CursorTupleRowsMixIn, BaseCursor):
-    """This is the standard Cursor class that returns rows as tuples
-    and stores the result set in the client."""
-
-
-class DictCursor(CursorStoreResultMixIn, CursorDictRowsMixIn, BaseCursor):
-    """This is a Cursor class that returns rows as dictionaries and
-    stores the result set in the client."""
-
-
-class SSCursor(CursorUseResultMixIn, CursorTupleRowsMixIn, BaseCursor):
-    """This is a Cursor class that returns rows as tuples and stores
-    the result set in the server."""
-
-
-class SSDictCursor(CursorUseResultMixIn, CursorDictRowsMixIn, BaseCursor):
-    """This is a Cursor class that returns rows as dictionaries and
-    stores the result set in the server."""
+"""MySQLdb Cursors
+
+This module implements Cursors of various types for MySQLdb. By
+default, MySQLdb uses the Cursor class.
+"""
+import re
+
+from ._exceptions import ProgrammingError
+
+
+#: Regular expression for :meth:`Cursor.executemany`.
+#: executemany only supports simple bulk insert.
+#: You can use it to load large dataset.
+RE_INSERT_VALUES = re.compile(
+    "".join(
+        [
+            r"\s*((?:INSERT|REPLACE)\b.+\bVALUES?\s*)",
+            r"(\(\s*(?:%s|%\(.+\)s)\s*(?:,\s*(?:%s|%\(.+\)s)\s*)*\))",
+            r"(\s*(?:ON DUPLICATE.*)?);?\s*\Z",
+        ]
+    ),
+    re.IGNORECASE | re.DOTALL,
+)
+
+
+class BaseCursor:
+    """A base for Cursor classes. Useful attributes:
+
+    description
+        A tuple of DB API 7-tuples describing the columns in
+        the last executed query; see PEP-249 for details.
+
+    description_flags
+        Tuple of column flags for last query, one entry per column
+        in the result set. Values correspond to those in
+        MySQLdb.constants.FLAG. See MySQL documentation (C API)
+        for more information. Non-standard extension.
+
+    arraysize
+        default number of rows fetchmany() will fetch
+    """
+
+    #: Max statement size which :meth:`executemany` generates.
+    #:
+    #: Max size of allowed statement is max_allowed_packet - packet_header_size.
+    #: Default value of max_allowed_packet is 1048576.
+    max_stmt_length = 64 * 1024
+
+    from ._exceptions import (
+        MySQLError,
+        Warning,
+        Error,
+        InterfaceError,
+        DatabaseError,
+        DataError,
+        OperationalError,
+        IntegrityError,
+        InternalError,
+        ProgrammingError,
+        NotSupportedError,
+    )
+
+    connection = None
+
+    def __init__(self, connection):
+        self.connection = connection
+        self.description = None
+        self.description_flags = None
+        self.rowcount = -1
+        self.arraysize = 1
+        self._executed = None
+
+        self.lastrowid = None
+        self._result = None
+        self.rownumber = None
+        self._rows = None
+
+    def close(self):
+        """Close the cursor. No further queries will be possible."""
+        try:
+            if self.connection is None:
+                return
+            while self.nextset():
+                pass
+        finally:
+            self.connection = None
+            self._result = None
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, *exc_info):
+        del exc_info
+        self.close()
+
+    def _escape_args(self, args, conn):
+        encoding = conn.encoding
+        literal = conn.literal
+
+        def ensure_bytes(x):
+            if isinstance(x, str):
+                return x.encode(encoding)
+            elif isinstance(x, tuple):
+                return tuple(map(ensure_bytes, x))
+            elif isinstance(x, list):
+                return list(map(ensure_bytes, x))
+            return x
+
+        if isinstance(args, (tuple, list)):
+            ret = tuple(literal(ensure_bytes(arg)) for arg in args)
+        elif isinstance(args, dict):
+            ret = {
+                ensure_bytes(key): literal(ensure_bytes(val))
+                for (key, val) in args.items()
+            }
+        else:
+            # If it's not a dictionary let's try escaping it anyways.
+            # Worst case it will throw a Value error
+            ret = literal(ensure_bytes(args))
+
+        ensure_bytes = None  # break circular reference
+        return ret
+
+    def _check_executed(self):
+        if not self._executed:
+            raise ProgrammingError("execute() first")
+
+    def nextset(self):
+        """Advance to the next result set.
+
+        Returns None if there are no more result sets.
+        """
+        if self._executed:
+            self.fetchall()
+
+        db = self._get_db()
+        nr = db.next_result()
+        if nr == -1:
+            return None
+        self._do_get_result(db)
+        self._post_get_result()
+        return 1
+
+    def _do_get_result(self, db):
+        self._result = result = self._get_result()
+        if result is None:
+            self.description = self.description_flags = None
+        else:
+            self.description = result.describe()
+            self.description_flags = result.field_flags()
+
+        self.rowcount = db.affected_rows()
+        self.rownumber = 0
+        self.lastrowid = db.insert_id()
+
+    def _post_get_result(self):
+        pass
+
+    def setinputsizes(self, *args):
+        """Does nothing, required by DB API."""
+
+    def setoutputsizes(self, *args):
+        """Does nothing, required by DB API."""
+
+    def _get_db(self):
+        con = self.connection
+        if con is None:
+            raise ProgrammingError("cursor closed")
+        return con
+
+    def execute(self, query, args=None):
+        """Execute a query.
+
+        query -- string, query to execute on server
+        args -- optional sequence or mapping, parameters to use with query.
+
+        Note: If args is a sequence, then %s must be used as the
+        parameter placeholder in the query. If a mapping is used,
+        %(key)s must be used as the placeholder.
+
+        Returns integer represents rows affected, if any
+        """
+        while self.nextset():
+            pass
+        db = self._get_db()
+
+        if isinstance(query, str):
+            query = query.encode(db.encoding)
+
+        if args is not None:
+            if isinstance(args, dict):
+                nargs = {}
+                for key, item in args.items():
+                    if isinstance(key, str):
+                        key = key.encode(db.encoding)
+                    nargs[key] = db.literal(item)
+                args = nargs
+            else:
+                args = tuple(map(db.literal, args))
+            try:
+                query = query % args
+            except TypeError as m:
+                raise ProgrammingError(str(m))
+
+        assert isinstance(query, (bytes, bytearray))
+        res = self._query(query)
+        return res
+
+    def executemany(self, query, args):
+        # type: (str, list) -> int
+        """Execute a multi-row query.
+
+        :param query: query to execute on server
+        :param args:  Sequence of sequences or mappings.  It is used as parameter.
+        :return: Number of rows affected, if any.
+
+        This method improves performance on multiple-row INSERT and
+        REPLACE. Otherwise it is equivalent to looping over args with
+        execute().
+        """
+        if not args:
+            return
+
+        m = RE_INSERT_VALUES.match(query)
+        if m:
+            q_prefix = m.group(1) % ()
+            q_values = m.group(2).rstrip()
+            q_postfix = m.group(3) or ""
+            assert q_values[0] == "(" and q_values[-1] == ")"
+            return self._do_execute_many(
+                q_prefix,
+                q_values,
+                q_postfix,
+                args,
+                self.max_stmt_length,
+                self._get_db().encoding,
+            )
+
+        self.rowcount = sum(self.execute(query, arg) for arg in args)
+        return self.rowcount
+
+    def _do_execute_many(
+        self, prefix, values, postfix, args, max_stmt_length, encoding
+    ):
+        conn = self._get_db()
+        escape = self._escape_args
+        if isinstance(prefix, str):
+            prefix = prefix.encode(encoding)
+        if isinstance(values, str):
+            values = values.encode(encoding)
+        if isinstance(postfix, str):
+            postfix = postfix.encode(encoding)
+        sql = bytearray(prefix)
+        args = iter(args)
+        v = values % escape(next(args), conn)
+        sql += v
+        rows = 0
+        for arg in args:
+            v = values % escape(arg, conn)
+            if len(sql) + len(v) + len(postfix) + 1 > max_stmt_length:
+                rows += self.execute(sql + postfix)
+                sql = bytearray(prefix)
+            else:
+                sql += b","
+            sql += v
+        rows += self.execute(sql + postfix)
+        self.rowcount = rows
+        return rows
+
+    def callproc(self, procname, args=()):
+        """Execute stored procedure procname with args
+
+        procname -- string, name of procedure to execute on server
+
+        args -- Sequence of parameters to use with procedure
+
+        Returns the original args.
+
+        Compatibility warning: PEP-249 specifies that any modified
+        parameters must be returned. This is currently impossible
+        as they are only available by storing them in a server
+        variable and then retrieved by a query. Since stored
+        procedures return zero or more result sets, there is no
+        reliable way to get at OUT or INOUT parameters via callproc.
+        The server variables are named @_procname_n, where procname
+        is the parameter above and n is the position of the parameter
+        (from zero). Once all result sets generated by the procedure
+        have been fetched, you can issue a SELECT @_procname_0, ...
+        query using .execute() to get any OUT or INOUT values.
+
+        Compatibility warning: The act of calling a stored procedure
+        itself creates an empty result set. This appears after any
+        result sets generated by the procedure. This is non-standard
+        behavior with respect to the DB-API. Be sure to use nextset()
+        to advance through all result sets; otherwise you may get
+        disconnected.
+        """
+        db = self._get_db()
+        if isinstance(procname, str):
+            procname = procname.encode(db.encoding)
+        if args:
+            fmt = b"@_" + procname + b"_%d=%s"
+            q = b"SET %s" % b",".join(
+                fmt % (index, db.literal(arg)) for index, arg in enumerate(args)
+            )
+            self._query(q)
+            self.nextset()
+
+        q = b"CALL %s(%s)" % (
+            procname,
+            b",".join([b"@_%s_%d" % (procname, i) for i in range(len(args))]),
+        )
+        self._query(q)
+        return args
+
+    def _query(self, q):
+        db = self._get_db()
+        self._result = None
+        db.query(q)
+        self._do_get_result(db)
+        self._post_get_result()
+        self._executed = q
+        return self.rowcount
+
+    def _fetch_row(self, size=1):
+        if not self._result:
+            return ()
+        return self._result.fetch_row(size, self._fetch_type)
+
+    def __iter__(self):
+        return iter(self.fetchone, None)
+
+    Warning = Warning
+    Error = Error
+    InterfaceError = InterfaceError
+    DatabaseError = DatabaseError
+    DataError = DataError
+    OperationalError = OperationalError
+    IntegrityError = IntegrityError
+    InternalError = InternalError
+    ProgrammingError = ProgrammingError
+    NotSupportedError = NotSupportedError
+
+
+class CursorStoreResultMixIn:
+    """This is a MixIn class which causes the entire result set to be
+    stored on the client side, i.e. it uses mysql_store_result(). If the
+    result set can be very large, consider adding a LIMIT clause to your
+    query, or using CursorUseResultMixIn instead."""
+
+    def _get_result(self):
+        return self._get_db().store_result()
+
+    def _post_get_result(self):
+        self._rows = self._fetch_row(0)
+        self._result = None
+
+    def fetchone(self):
+        """Fetches a single row from the cursor. None indicates that
+        no more rows are available."""
+        self._check_executed()
+        if self.rownumber >= len(self._rows):
+            return None
+        result = self._rows[self.rownumber]
+        self.rownumber = self.rownumber + 1
+        return result
+
+    def fetchmany(self, size=None):
+        """Fetch up to size rows from the cursor. Result set may be smaller
+        than size. If size is not defined, cursor.arraysize is used."""
+        self._check_executed()
+        end = self.rownumber + (size or self.arraysize)
+        result = self._rows[self.rownumber : end]
+        self.rownumber = min(end, len(self._rows))
+        return result
+
+    def fetchall(self):
+        """Fetchs all available rows from the cursor."""
+        self._check_executed()
+        if self.rownumber:
+            result = self._rows[self.rownumber :]
+        else:
+            result = self._rows
+        self.rownumber = len(self._rows)
+        return result
+
+    def scroll(self, value, mode="relative"):
+        """Scroll the cursor in the result set to a new position according
+        to mode.
+
+        If mode is 'relative' (default), value is taken as offset to
+        the current position in the result set, if set to 'absolute',
+        value states an absolute target position."""
+        self._check_executed()
+        if mode == "relative":
+            r = self.rownumber + value
+        elif mode == "absolute":
+            r = value
+        else:
+            raise ProgrammingError("unknown scroll mode %s" % repr(mode))
+        if r < 0 or r >= len(self._rows):
+            raise IndexError("out of range")
+        self.rownumber = r
+
+    def __iter__(self):
+        self._check_executed()
+        result = self.rownumber and self._rows[self.rownumber :] or self._rows
+        return iter(result)
+
+
+class CursorUseResultMixIn:
+
+    """This is a MixIn class which causes the result set to be stored
+    in the server and sent row-by-row to client side, i.e. it uses
+    mysql_use_result(). You MUST retrieve the entire result set and
+    close() the cursor before additional queries can be performed on
+    the connection."""
+
+    def _get_result(self):
+        return self._get_db().use_result()
+
+    def fetchone(self):
+        """Fetches a single row from the cursor."""
+        self._check_executed()
+        r = self._fetch_row(1)
+        if not r:
+            return None
+        self.rownumber = self.rownumber + 1
+        return r[0]
+
+    def fetchmany(self, size=None):
+        """Fetch up to size rows from the cursor. Result set may be smaller
+        than size. If size is not defined, cursor.arraysize is used."""
+        self._check_executed()
+        r = self._fetch_row(size or self.arraysize)
+        self.rownumber = self.rownumber + len(r)
+        return r
+
+    def fetchall(self):
+        """Fetchs all available rows from the cursor."""
+        self._check_executed()
+        r = self._fetch_row(0)
+        self.rownumber = self.rownumber + len(r)
+        return r
+
+    def __iter__(self):
+        return self
+
+    def next(self):
+        row = self.fetchone()
+        if row is None:
+            raise StopIteration
+        return row
+
+    __next__ = next
+
+
+class CursorTupleRowsMixIn:
+    """This is a MixIn class that causes all rows to be returned as tuples,
+    which is the standard form required by DB API."""
+
+    _fetch_type = 0
+
+
+class CursorDictRowsMixIn:
+    """This is a MixIn class that causes all rows to be returned as
+    dictionaries. This is a non-standard feature."""
+
+    _fetch_type = 1
+
+
+class Cursor(CursorStoreResultMixIn, CursorTupleRowsMixIn, BaseCursor):
+    """This is the standard Cursor class that returns rows as tuples
+    and stores the result set in the client."""
+
+
+class DictCursor(CursorStoreResultMixIn, CursorDictRowsMixIn, BaseCursor):
+    """This is a Cursor class that returns rows as dictionaries and
+    stores the result set in the client."""
+
+
+class SSCursor(CursorUseResultMixIn, CursorTupleRowsMixIn, BaseCursor):
+    """This is a Cursor class that returns rows as tuples and stores
+    the result set in the server."""
+
+
+class SSDictCursor(CursorUseResultMixIn, CursorDictRowsMixIn, BaseCursor):
+    """This is a Cursor class that returns rows as dictionaries and
+    stores the result set in the server."""
diff --git a/venv/Lib/site-packages/MySQLdb/release.py b/venv/Lib/site-packages/MySQLdb/release.py
index 03f738bcbd9b68be512c5d86962b63ecc60b6059..968b1561771c80cf6778eb6bf7b7a177b9dc3f33 100644
--- a/venv/Lib/site-packages/MySQLdb/release.py
+++ b/venv/Lib/site-packages/MySQLdb/release.py
@@ -1,4 +1,4 @@
-
-__author__ = "Inada Naoki <songofacandy@gmail.com>"
-version_info = (2,0,2,'final',0)
-__version__ = "2.0.2"
+
+__author__ = "Inada Naoki <songofacandy@gmail.com>"
+version_info = (2,0,2,'final',0)
+__version__ = "2.0.2"
diff --git a/venv/Lib/site-packages/MySQLdb/times.py b/venv/Lib/site-packages/MySQLdb/times.py
index 915d827b75d69c5abfe7d3107bdc01ec28593c48..5211d02a50915f21d1d822a5c921804be1660b67 100644
--- a/venv/Lib/site-packages/MySQLdb/times.py
+++ b/venv/Lib/site-packages/MySQLdb/times.py
@@ -1,150 +1,150 @@
-"""times module
-
-This module provides some Date and Time classes for dealing with MySQL data.
-
-Use Python datetime module to handle date and time columns.
-"""
-from time import localtime
-from datetime import date, datetime, time, timedelta
-from MySQLdb._mysql import string_literal
-
-Date = date
-Time = time
-TimeDelta = timedelta
-Timestamp = datetime
-
-DateTimeDeltaType = timedelta
-DateTimeType = datetime
-
-
-def DateFromTicks(ticks):
-    """Convert UNIX ticks into a date instance."""
-    return date(*localtime(ticks)[:3])
-
-
-def TimeFromTicks(ticks):
-    """Convert UNIX ticks into a time instance."""
-    return time(*localtime(ticks)[3:6])
-
-
-def TimestampFromTicks(ticks):
-    """Convert UNIX ticks into a datetime instance."""
-    return datetime(*localtime(ticks)[:6])
-
-
-format_TIME = format_DATE = str
-
-
-def format_TIMEDELTA(v):
-    seconds = int(v.seconds) % 60
-    minutes = int(v.seconds // 60) % 60
-    hours = int(v.seconds // 3600) % 24
-    return "%d %d:%d:%d" % (v.days, hours, minutes, seconds)
-
-
-def format_TIMESTAMP(d):
-    """
-    :type d: datetime.datetime
-    """
-    if d.microsecond:
-        fmt = " ".join(
-            [
-                "{0.year:04}-{0.month:02}-{0.day:02}",
-                "{0.hour:02}:{0.minute:02}:{0.second:02}.{0.microsecond:06}",
-            ]
-        )
-    else:
-        fmt = " ".join(
-            [
-                "{0.year:04}-{0.month:02}-{0.day:02}",
-                "{0.hour:02}:{0.minute:02}:{0.second:02}",
-            ]
-        )
-    return fmt.format(d)
-
-
-def DateTime_or_None(s):
-    try:
-        if len(s) < 11:
-            return Date_or_None(s)
-
-        micros = s[20:]
-
-        if len(micros) == 0:
-            # 12:00:00
-            micros = 0
-        elif len(micros) < 7:
-            # 12:00:00.123456
-            micros = int(micros) * 10 ** (6 - len(micros))
-        else:
-            return None
-
-        return datetime(
-            int(s[:4]),  # year
-            int(s[5:7]),  # month
-            int(s[8:10]),  # day
-            int(s[11:13] or 0),  # hour
-            int(s[14:16] or 0),  # minute
-            int(s[17:19] or 0),  # second
-            micros,  # microsecond
-        )
-    except ValueError:
-        return None
-
-
-def TimeDelta_or_None(s):
-    try:
-        h, m, s = s.split(":")
-        if "." in s:
-            s, ms = s.split(".")
-            ms = ms.ljust(6, "0")
-        else:
-            ms = 0
-        if h[0] == "-":
-            negative = True
-        else:
-            negative = False
-        h, m, s, ms = abs(int(h)), int(m), int(s), int(ms)
-        td = timedelta(hours=h, minutes=m, seconds=s, microseconds=ms)
-        if negative:
-            return -td
-        else:
-            return td
-    except ValueError:
-        # unpacking or int/float conversion failed
-        return None
-
-
-def Time_or_None(s):
-    try:
-        h, m, s = s.split(":")
-        if "." in s:
-            s, ms = s.split(".")
-            ms = ms.ljust(6, "0")
-        else:
-            ms = 0
-        h, m, s, ms = int(h), int(m), int(s), int(ms)
-        return time(hour=h, minute=m, second=s, microsecond=ms)
-    except ValueError:
-        return None
-
-
-def Date_or_None(s):
-    try:
-        return date(
-            int(s[:4]),
-            int(s[5:7]),
-            int(s[8:10]),
-        )  # year  # month  # day
-    except ValueError:
-        return None
-
-
-def DateTime2literal(d, c):
-    """Format a DateTime object as an ISO timestamp."""
-    return string_literal(format_TIMESTAMP(d))
-
-
-def DateTimeDelta2literal(d, c):
-    """Format a DateTimeDelta object as a time."""
-    return string_literal(format_TIMEDELTA(d))
+"""times module
+
+This module provides some Date and Time classes for dealing with MySQL data.
+
+Use Python datetime module to handle date and time columns.
+"""
+from time import localtime
+from datetime import date, datetime, time, timedelta
+from MySQLdb._mysql import string_literal
+
+Date = date
+Time = time
+TimeDelta = timedelta
+Timestamp = datetime
+
+DateTimeDeltaType = timedelta
+DateTimeType = datetime
+
+
+def DateFromTicks(ticks):
+    """Convert UNIX ticks into a date instance."""
+    return date(*localtime(ticks)[:3])
+
+
+def TimeFromTicks(ticks):
+    """Convert UNIX ticks into a time instance."""
+    return time(*localtime(ticks)[3:6])
+
+
+def TimestampFromTicks(ticks):
+    """Convert UNIX ticks into a datetime instance."""
+    return datetime(*localtime(ticks)[:6])
+
+
+format_TIME = format_DATE = str
+
+
+def format_TIMEDELTA(v):
+    seconds = int(v.seconds) % 60
+    minutes = int(v.seconds // 60) % 60
+    hours = int(v.seconds // 3600) % 24
+    return "%d %d:%d:%d" % (v.days, hours, minutes, seconds)
+
+
+def format_TIMESTAMP(d):
+    """
+    :type d: datetime.datetime
+    """
+    if d.microsecond:
+        fmt = " ".join(
+            [
+                "{0.year:04}-{0.month:02}-{0.day:02}",
+                "{0.hour:02}:{0.minute:02}:{0.second:02}.{0.microsecond:06}",
+            ]
+        )
+    else:
+        fmt = " ".join(
+            [
+                "{0.year:04}-{0.month:02}-{0.day:02}",
+                "{0.hour:02}:{0.minute:02}:{0.second:02}",
+            ]
+        )
+    return fmt.format(d)
+
+
+def DateTime_or_None(s):
+    try:
+        if len(s) < 11:
+            return Date_or_None(s)
+
+        micros = s[20:]
+
+        if len(micros) == 0:
+            # 12:00:00
+            micros = 0
+        elif len(micros) < 7:
+            # 12:00:00.123456
+            micros = int(micros) * 10 ** (6 - len(micros))
+        else:
+            return None
+
+        return datetime(
+            int(s[:4]),  # year
+            int(s[5:7]),  # month
+            int(s[8:10]),  # day
+            int(s[11:13] or 0),  # hour
+            int(s[14:16] or 0),  # minute
+            int(s[17:19] or 0),  # second
+            micros,  # microsecond
+        )
+    except ValueError:
+        return None
+
+
+def TimeDelta_or_None(s):
+    try:
+        h, m, s = s.split(":")
+        if "." in s:
+            s, ms = s.split(".")
+            ms = ms.ljust(6, "0")
+        else:
+            ms = 0
+        if h[0] == "-":
+            negative = True
+        else:
+            negative = False
+        h, m, s, ms = abs(int(h)), int(m), int(s), int(ms)
+        td = timedelta(hours=h, minutes=m, seconds=s, microseconds=ms)
+        if negative:
+            return -td
+        else:
+            return td
+    except ValueError:
+        # unpacking or int/float conversion failed
+        return None
+
+
+def Time_or_None(s):
+    try:
+        h, m, s = s.split(":")
+        if "." in s:
+            s, ms = s.split(".")
+            ms = ms.ljust(6, "0")
+        else:
+            ms = 0
+        h, m, s, ms = int(h), int(m), int(s), int(ms)
+        return time(hour=h, minute=m, second=s, microsecond=ms)
+    except ValueError:
+        return None
+
+
+def Date_or_None(s):
+    try:
+        return date(
+            int(s[:4]),
+            int(s[5:7]),
+            int(s[8:10]),
+        )  # year  # month  # day
+    except ValueError:
+        return None
+
+
+def DateTime2literal(d, c):
+    """Format a DateTime object as an ISO timestamp."""
+    return string_literal(format_TIMESTAMP(d))
+
+
+def DateTimeDelta2literal(d, c):
+    """Format a DateTimeDelta object as a time."""
+    return string_literal(format_TIMEDELTA(d))
diff --git a/venv/Lib/site-packages/PyYAML-5.3.1.dist-info/RECORD b/venv/Lib/site-packages/PyYAML-5.3.1.dist-info/RECORD
index 1c5a10fdc4c7847883897a1312e1d5a2858176f5..f5686c58a14b213dd1ee73b004ca255935096a31 100644
--- a/venv/Lib/site-packages/PyYAML-5.3.1.dist-info/RECORD
+++ b/venv/Lib/site-packages/PyYAML-5.3.1.dist-info/RECORD
@@ -1,58 +1,58 @@
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-PyYAML-5.3.1.dist-info/LICENSE,sha256=xAESRJ8lS5dTBFklJIMT6ScO-jbSJrItgtTMbEPFfyk,1101
-PyYAML-5.3.1.dist-info/METADATA,sha256=BQtd620c4xeqO-y5lTeR6Jtk7un_1PvfRTxTHq_gRzM,1740
-PyYAML-5.3.1.dist-info/RECORD,,
-PyYAML-5.3.1.dist-info/REQUESTED,sha256=47DEQpj8HBSa-_TImW-5JCeuQeRkm5NMpJWZG3hSuFU,0
-PyYAML-5.3.1.dist-info/WHEEL,sha256=2Kg4PzfJLrLEnxRV1e1jZf0TVEjxVcXZXjp8WtjE4tI,105
-_yaml.cp39-win_amd64.pyd,sha256=52yVGVvIlzjR5B6Me0NQuOKCJWLgLzGbRPoIb_aua6c,259584
-yaml/__init__.py,sha256=XFUNbKTg4afAd0BETjGQ1mKQ97_g5jbE1C0WoKc74dc,13170
-yaml/__pycache__/__init__.cpython-39.pyc,,
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diff --git a/venv/Lib/site-packages/mysqlclient-2.0.2.dist-info/LICENSE b/venv/Lib/site-packages/mysqlclient-2.0.2.dist-info/LICENSE
index d159169d1050894d3ea3b98e1c965c4058208fe1..89e08fb002e48e22363b7b3789a5470ffe71fea1 100644
--- a/venv/Lib/site-packages/mysqlclient-2.0.2.dist-info/LICENSE
+++ b/venv/Lib/site-packages/mysqlclient-2.0.2.dist-info/LICENSE
@@ -1,339 +1,339 @@
-                    GNU GENERAL PUBLIC LICENSE
-                       Version 2, June 1991
-
- Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- Everyone is permitted to copy and distribute verbatim copies
- of this license document, but changing it is not allowed.
-
-                            Preamble
-
-  The licenses for most software are designed to take away your
-freedom to share and change it.  By contrast, the GNU General Public
-License is intended to guarantee your freedom to share and change free
-software--to make sure the software is free for all its users.  This
-General Public License applies to most of the Free Software
-Foundation's software and to any other program whose authors commit to
-using it.  (Some other Free Software Foundation software is covered by
-the GNU Lesser General Public License instead.)  You can apply it to
-your programs, too.
-
-  When we speak of free software, we are referring to freedom, not
-price.  Our General Public Licenses are designed to make sure that you
-have the freedom to distribute copies of free software (and charge for
-this service if you wish), that you receive source code or can get it
-if you want it, that you can change the software or use pieces of it
-in new free programs; and that you know you can do these things.
-
-  To protect your rights, we need to make restrictions that forbid
-anyone to deny you these rights or to ask you to surrender the rights.
-These restrictions translate to certain responsibilities for you if you
-distribute copies of the software, or if you modify it.
-
-  For example, if you distribute copies of such a program, whether
-gratis or for a fee, you must give the recipients all the rights that
-you have.  You must make sure that they, too, receive or can get the
-source code.  And you must show them these terms so they know their
-rights.
-
-  We protect your rights with two steps: (1) copyright the software, and
-(2) offer you this license which gives you legal permission to copy,
-distribute and/or modify the software.
-
-  Also, for each author's protection and ours, we want to make certain
-that everyone understands that there is no warranty for this free
-software.  If the software is modified by someone else and passed on, we
-want its recipients to know that what they have is not the original, so
-that any problems introduced by others will not reflect on the original
-authors' reputations.
-
-  Finally, any free program is threatened constantly by software
-patents.  We wish to avoid the danger that redistributors of a free
-program will individually obtain patent licenses, in effect making the
-program proprietary.  To prevent this, we have made it clear that any
-patent must be licensed for everyone's free use or not licensed at all.
-
-  The precise terms and conditions for copying, distribution and
-modification follow.
-
-                    GNU GENERAL PUBLIC LICENSE
-   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
-
-  0. This License applies to any program or other work which contains
-a notice placed by the copyright holder saying it may be distributed
-under the terms of this General Public License.  The "Program", below,
-refers to any such program or work, and a "work based on the Program"
-means either the Program or any derivative work under copyright law:
-that is to say, a work containing the Program or a portion of it,
-either verbatim or with modifications and/or translated into another
-language.  (Hereinafter, translation is included without limitation in
-the term "modification".)  Each licensee is addressed as "you".
-
-Activities other than copying, distribution and modification are not
-covered by this License; they are outside its scope.  The act of
-running the Program is not restricted, and the output from the Program
-is covered only if its contents constitute a work based on the
-Program (independent of having been made by running the Program).
-Whether that is true depends on what the Program does.
-
-  1. You may copy and distribute verbatim copies of the Program's
-source code as you receive it, in any medium, provided that you
-conspicuously and appropriately publish on each copy an appropriate
-copyright notice and disclaimer of warranty; keep intact all the
-notices that refer to this License and to the absence of any warranty;
-and give any other recipients of the Program a copy of this License
-along with the Program.
-
-You may charge a fee for the physical act of transferring a copy, and
-you may at your option offer warranty protection in exchange for a fee.
-
-  2. You may modify your copy or copies of the Program or any portion
-of it, thus forming a work based on the Program, and copy and
-distribute such modifications or work under the terms of Section 1
-above, provided that you also meet all of these conditions:
-
-    a) You must cause the modified files to carry prominent notices
-    stating that you changed the files and the date of any change.
-
-    b) You must cause any work that you distribute or publish, that in
-    whole or in part contains or is derived from the Program or any
-    part thereof, to be licensed as a whole at no charge to all third
-    parties under the terms of this License.
-
-    c) If the modified program normally reads commands interactively
-    when run, you must cause it, when started running for such
-    interactive use in the most ordinary way, to print or display an
-    announcement including an appropriate copyright notice and a
-    notice that there is no warranty (or else, saying that you provide
-    a warranty) and that users may redistribute the program under
-    these conditions, and telling the user how to view a copy of this
-    License.  (Exception: if the Program itself is interactive but
-    does not normally print such an announcement, your work based on
-    the Program is not required to print an announcement.)
-
-These requirements apply to the modified work as a whole.  If
-identifiable sections of that work are not derived from the Program,
-and can be reasonably considered independent and separate works in
-themselves, then this License, and its terms, do not apply to those
-sections when you distribute them as separate works.  But when you
-distribute the same sections as part of a whole which is a work based
-on the Program, the distribution of the whole must be on the terms of
-this License, whose permissions for other licensees extend to the
-entire whole, and thus to each and every part regardless of who wrote it.
-
-Thus, it is not the intent of this section to claim rights or contest
-your rights to work written entirely by you; rather, the intent is to
-exercise the right to control the distribution of derivative or
-collective works based on the Program.
-
-In addition, mere aggregation of another work not based on the Program
-with the Program (or with a work based on the Program) on a volume of
-a storage or distribution medium does not bring the other work under
-the scope of this License.
-
-  3. You may copy and distribute the Program (or a work based on it,
-under Section 2) in object code or executable form under the terms of
-Sections 1 and 2 above provided that you also do one of the following:
-
-    a) Accompany it with the complete corresponding machine-readable
-    source code, which must be distributed under the terms of Sections
-    1 and 2 above on a medium customarily used for software interchange; or,
-
-    b) Accompany it with a written offer, valid for at least three
-    years, to give any third party, for a charge no more than your
-    cost of physically performing source distribution, a complete
-    machine-readable copy of the corresponding source code, to be
-    distributed under the terms of Sections 1 and 2 above on a medium
-    customarily used for software interchange; or,
-
-    c) Accompany it with the information you received as to the offer
-    to distribute corresponding source code.  (This alternative is
-    allowed only for noncommercial distribution and only if you
-    received the program in object code or executable form with such
-    an offer, in accord with Subsection b above.)
-
-The source code for a work means the preferred form of the work for
-making modifications to it.  For an executable work, complete source
-code means all the source code for all modules it contains, plus any
-associated interface definition files, plus the scripts used to
-control compilation and installation of the executable.  However, as a
-special exception, the source code distributed need not include
-anything that is normally distributed (in either source or binary
-form) with the major components (compiler, kernel, and so on) of the
-operating system on which the executable runs, unless that component
-itself accompanies the executable.
-
-If distribution of executable or object code is made by offering
-access to copy from a designated place, then offering equivalent
-access to copy the source code from the same place counts as
-distribution of the source code, even though third parties are not
-compelled to copy the source along with the object code.
-
-  4. You may not copy, modify, sublicense, or distribute the Program
-except as expressly provided under this License.  Any attempt
-otherwise to copy, modify, sublicense or distribute the Program is
-void, and will automatically terminate your rights under this License.
-However, parties who have received copies, or rights, from you under
-this License will not have their licenses terminated so long as such
-parties remain in full compliance.
-
-  5. You are not required to accept this License, since you have not
-signed it.  However, nothing else grants you permission to modify or
-distribute the Program or its derivative works.  These actions are
-prohibited by law if you do not accept this License.  Therefore, by
-modifying or distributing the Program (or any work based on the
-Program), you indicate your acceptance of this License to do so, and
-all its terms and conditions for copying, distributing or modifying
-the Program or works based on it.
-
-  6. Each time you redistribute the Program (or any work based on the
-Program), the recipient automatically receives a license from the
-original licensor to copy, distribute or modify the Program subject to
-these terms and conditions.  You may not impose any further
-restrictions on the recipients' exercise of the rights granted herein.
-You are not responsible for enforcing compliance by third parties to
-this License.
-
-  7. If, as a consequence of a court judgment or allegation of patent
-infringement or for any other reason (not limited to patent issues),
-conditions are imposed on you (whether by court order, agreement or
-otherwise) that contradict the conditions of this License, they do not
-excuse you from the conditions of this License.  If you cannot
-distribute so as to satisfy simultaneously your obligations under this
-License and any other pertinent obligations, then as a consequence you
-may not distribute the Program at all.  For example, if a patent
-license would not permit royalty-free redistribution of the Program by
-all those who receive copies directly or indirectly through you, then
-the only way you could satisfy both it and this License would be to
-refrain entirely from distribution of the Program.
-
-If any portion of this section is held invalid or unenforceable under
-any particular circumstance, the balance of the section is intended to
-apply and the section as a whole is intended to apply in other
-circumstances.
-
-It is not the purpose of this section to induce you to infringe any
-patents or other property right claims or to contest validity of any
-such claims; this section has the sole purpose of protecting the
-integrity of the free software distribution system, which is
-implemented by public license practices.  Many people have made
-generous contributions to the wide range of software distributed
-through that system in reliance on consistent application of that
-system; it is up to the author/donor to decide if he or she is willing
-to distribute software through any other system and a licensee cannot
-impose that choice.
-
-This section is intended to make thoroughly clear what is believed to
-be a consequence of the rest of this License.
-
-  8. If the distribution and/or use of the Program is restricted in
-certain countries either by patents or by copyrighted interfaces, the
-original copyright holder who places the Program under this License
-may add an explicit geographical distribution limitation excluding
-those countries, so that distribution is permitted only in or among
-countries not thus excluded.  In such case, this License incorporates
-the limitation as if written in the body of this License.
-
-  9. The Free Software Foundation may publish revised and/or new versions
-of the General Public License from time to time.  Such new versions will
-be similar in spirit to the present version, but may differ in detail to
-address new problems or concerns.
-
-Each version is given a distinguishing version number.  If the Program
-specifies a version number of this License which applies to it and "any
-later version", you have the option of following the terms and conditions
-either of that version or of any later version published by the Free
-Software Foundation.  If the Program does not specify a version number of
-this License, you may choose any version ever published by the Free Software
-Foundation.
-
-  10. If you wish to incorporate parts of the Program into other free
-programs whose distribution conditions are different, write to the author
-to ask for permission.  For software which is copyrighted by the Free
-Software Foundation, write to the Free Software Foundation; we sometimes
-make exceptions for this.  Our decision will be guided by the two goals
-of preserving the free status of all derivatives of our free software and
-of promoting the sharing and reuse of software generally.
-
-                            NO WARRANTY
-
-  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
-FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
-OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
-PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
-OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
-MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
-TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
-PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
-REPAIR OR CORRECTION.
-
-  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
-WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
-REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
-INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
-OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
-TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
-YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
-PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
-POSSIBILITY OF SUCH DAMAGES.
-
-                     END OF TERMS AND CONDITIONS
-
-            How to Apply These Terms to Your New Programs
-
-  If you develop a new program, and you want it to be of the greatest
-possible use to the public, the best way to achieve this is to make it
-free software which everyone can redistribute and change under these terms.
-
-  To do so, attach the following notices to the program.  It is safest
-to attach them to the start of each source file to most effectively
-convey the exclusion of warranty; and each file should have at least
-the "copyright" line and a pointer to where the full notice is found.
-
-    <one line to give the program's name and a brief idea of what it does.>
-    Copyright (C) <year>  <name of author>
-
-    This program is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
-
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
-
-    You should have received a copy of the GNU General Public License along
-    with this program; if not, write to the Free Software Foundation, Inc.,
-    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-
-Also add information on how to contact you by electronic and paper mail.
-
-If the program is interactive, make it output a short notice like this
-when it starts in an interactive mode:
-
-    Gnomovision version 69, Copyright (C) year name of author
-    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
-    This is free software, and you are welcome to redistribute it
-    under certain conditions; type `show c' for details.
-
-The hypothetical commands `show w' and `show c' should show the appropriate
-parts of the General Public License.  Of course, the commands you use may
-be called something other than `show w' and `show c'; they could even be
-mouse-clicks or menu items--whatever suits your program.
-
-You should also get your employer (if you work as a programmer) or your
-school, if any, to sign a "copyright disclaimer" for the program, if
-necessary.  Here is a sample; alter the names:
-
-  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
-  `Gnomovision' (which makes passes at compilers) written by James Hacker.
-
-  <signature of Ty Coon>, 1 April 1989
-  Ty Coon, President of Vice
-
-This General Public License does not permit incorporating your program into
-proprietary programs.  If your program is a subroutine library, you may
-consider it more useful to permit linking proprietary applications with the
-library.  If this is what you want to do, use the GNU Lesser General
-Public License instead of this License.
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it.  (Some other Free Software Foundation software is covered by
+the GNU Lesser General Public License instead.)  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+  To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have.  You must make sure that they, too, receive or can get the
+source code.  And you must show them these terms so they know their
+rights.
+
+  We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+  Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software.  If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
+that any problems introduced by others will not reflect on the original
+authors' reputations.
+
+  Finally, any free program is threatened constantly by software
+patents.  We wish to avoid the danger that redistributors of a free
+program will individually obtain patent licenses, in effect making the
+program proprietary.  To prevent this, we have made it clear that any
+patent must be licensed for everyone's free use or not licensed at all.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+                    GNU GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License.  The "Program", below,
+refers to any such program or work, and a "work based on the Program"
+means either the Program or any derivative work under copyright law:
+that is to say, a work containing the Program or a portion of it,
+either verbatim or with modifications and/or translated into another
+language.  (Hereinafter, translation is included without limitation in
+the term "modification".)  Each licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope.  The act of
+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+  1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
+and give any other recipients of the Program a copy of this License
+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+  2. You may modify your copy or copies of the Program or any portion
+of it, thus forming a work based on the Program, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+    a) You must cause the modified files to carry prominent notices
+    stating that you changed the files and the date of any change.
+
+    b) You must cause any work that you distribute or publish, that in
+    whole or in part contains or is derived from the Program or any
+    part thereof, to be licensed as a whole at no charge to all third
+    parties under the terms of this License.
+
+    c) If the modified program normally reads commands interactively
+    when run, you must cause it, when started running for such
+    interactive use in the most ordinary way, to print or display an
+    announcement including an appropriate copyright notice and a
+    notice that there is no warranty (or else, saying that you provide
+    a warranty) and that users may redistribute the program under
+    these conditions, and telling the user how to view a copy of this
+    License.  (Exception: if the Program itself is interactive but
+    does not normally print such an announcement, your work based on
+    the Program is not required to print an announcement.)
+
+These requirements apply to the modified work as a whole.  If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works.  But when you
+distribute the same sections as part of a whole which is a work based
+on the Program, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Program.
+
+In addition, mere aggregation of another work not based on the Program
+with the Program (or with a work based on the Program) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+  3. You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
+Sections 1 and 2 above provided that you also do one of the following:
+
+    a) Accompany it with the complete corresponding machine-readable
+    source code, which must be distributed under the terms of Sections
+    1 and 2 above on a medium customarily used for software interchange; or,
+
+    b) Accompany it with a written offer, valid for at least three
+    years, to give any third party, for a charge no more than your
+    cost of physically performing source distribution, a complete
+    machine-readable copy of the corresponding source code, to be
+    distributed under the terms of Sections 1 and 2 above on a medium
+    customarily used for software interchange; or,
+
+    c) Accompany it with the information you received as to the offer
+    to distribute corresponding source code.  (This alternative is
+    allowed only for noncommercial distribution and only if you
+    received the program in object code or executable form with such
+    an offer, in accord with Subsection b above.)
+
+The source code for a work means the preferred form of the work for
+making modifications to it.  For an executable work, complete source
+code means all the source code for all modules it contains, plus any
+associated interface definition files, plus the scripts used to
+control compilation and installation of the executable.  However, as a
+special exception, the source code distributed need not include
+anything that is normally distributed (in either source or binary
+form) with the major components (compiler, kernel, and so on) of the
+operating system on which the executable runs, unless that component
+itself accompanies the executable.
+
+If distribution of executable or object code is made by offering
+access to copy from a designated place, then offering equivalent
+access to copy the source code from the same place counts as
+distribution of the source code, even though third parties are not
+compelled to copy the source along with the object code.
+
+  4. You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License.  Any attempt
+otherwise to copy, modify, sublicense or distribute the Program is
+void, and will automatically terminate your rights under this License.
+However, parties who have received copies, or rights, from you under
+this License will not have their licenses terminated so long as such
+parties remain in full compliance.
+
+  5. You are not required to accept this License, since you have not
+signed it.  However, nothing else grants you permission to modify or
+distribute the Program or its derivative works.  These actions are
+prohibited by law if you do not accept this License.  Therefore, by
+modifying or distributing the Program (or any work based on the
+Program), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Program or works based on it.
+
+  6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the
+original licensor to copy, distribute or modify the Program subject to
+these terms and conditions.  You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties to
+this License.
+
+  7. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot
+distribute so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you
+may not distribute the Program at all.  For example, if a patent
+license would not permit royalty-free redistribution of the Program by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
+apply and the section as a whole is intended to apply in other
+circumstances.
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system, which is
+implemented by public license practices.  Many people have made
+generous contributions to the wide range of software distributed
+through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing
+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+  8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded.  In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+  9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number.  If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation.  If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+  10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission.  For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this.  Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+                            NO WARRANTY
+
+  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with this program; if not, write to the Free Software Foundation, Inc.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+    Gnomovision version 69, Copyright (C) year name of author
+    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs.  If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.
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index e8231039e17dc23cb72ed8d8eb30bf7286181c73..728dcc279941ded51f203da5a8f0bc5693e377d9 100644
--- a/venv/Lib/site-packages/pip-20.3.1.dist-info/RECORD
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diff --git a/venv/Lib/site-packages/pkg_resources/_vendor/pyparsing.py b/venv/Lib/site-packages/pkg_resources/_vendor/pyparsing.py
index 4aa30ee6b250b3b72a9dcebb7f26a8e0432d7082..cf75e1e5fcbfe7eac41d2a9e446c5c980741087b 100644
--- a/venv/Lib/site-packages/pkg_resources/_vendor/pyparsing.py
+++ b/venv/Lib/site-packages/pkg_resources/_vendor/pyparsing.py
@@ -1,5742 +1,5742 @@
-# module pyparsing.py
-#
-# Copyright (c) 2003-2018  Paul T. McGuire
-#
-# Permission is hereby granted, free of charge, to any person obtaining
-# a copy of this software and associated documentation files (the
-# "Software"), to deal in the Software without restriction, including
-# without limitation the rights to use, copy, modify, merge, publish,
-# distribute, sublicense, and/or sell copies of the Software, and to
-# permit persons to whom the Software is furnished to do so, subject to
-# the following conditions:
-#
-# The above copyright notice and this permission notice shall be
-# included in all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
-# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
-# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
-# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
-# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-#
-
-__doc__ = \
-"""
-pyparsing module - Classes and methods to define and execute parsing grammars
-=============================================================================
-
-The pyparsing module is an alternative approach to creating and executing simple grammars,
-vs. the traditional lex/yacc approach, or the use of regular expressions.  With pyparsing, you
-don't need to learn a new syntax for defining grammars or matching expressions - the parsing module
-provides a library of classes that you use to construct the grammar directly in Python.
-
-Here is a program to parse "Hello, World!" (or any greeting of the form 
-C{"<salutation>, <addressee>!"}), built up using L{Word}, L{Literal}, and L{And} elements 
-(L{'+'<ParserElement.__add__>} operator gives L{And} expressions, strings are auto-converted to
-L{Literal} expressions)::
-
-    from pyparsing import Word, alphas
-
-    # define grammar of a greeting
-    greet = Word(alphas) + "," + Word(alphas) + "!"
-
-    hello = "Hello, World!"
-    print (hello, "->", greet.parseString(hello))
-
-The program outputs the following::
-
-    Hello, World! -> ['Hello', ',', 'World', '!']
-
-The Python representation of the grammar is quite readable, owing to the self-explanatory
-class names, and the use of '+', '|' and '^' operators.
-
-The L{ParseResults} object returned from L{ParserElement.parseString<ParserElement.parseString>} can be accessed as a nested list, a dictionary, or an
-object with named attributes.
-
-The pyparsing module handles some of the problems that are typically vexing when writing text parsers:
- - extra or missing whitespace (the above program will also handle "Hello,World!", "Hello  ,  World  !", etc.)
- - quoted strings
- - embedded comments
-
-
-Getting Started -
------------------
-Visit the classes L{ParserElement} and L{ParseResults} to see the base classes that most other pyparsing
-classes inherit from. Use the docstrings for examples of how to:
- - construct literal match expressions from L{Literal} and L{CaselessLiteral} classes
- - construct character word-group expressions using the L{Word} class
- - see how to create repetitive expressions using L{ZeroOrMore} and L{OneOrMore} classes
- - use L{'+'<And>}, L{'|'<MatchFirst>}, L{'^'<Or>}, and L{'&'<Each>} operators to combine simple expressions into more complex ones
- - associate names with your parsed results using L{ParserElement.setResultsName}
- - find some helpful expression short-cuts like L{delimitedList} and L{oneOf}
- - find more useful common expressions in the L{pyparsing_common} namespace class
-"""
-
-__version__ = "2.2.1"
-__versionTime__ = "18 Sep 2018 00:49 UTC"
-__author__ = "Paul McGuire <ptmcg@users.sourceforge.net>"
-
-import string
-from weakref import ref as wkref
-import copy
-import sys
-import warnings
-import re
-import sre_constants
-import collections
-import pprint
-import traceback
-import types
-from datetime import datetime
-
-try:
-    from _thread import RLock
-except ImportError:
-    from threading import RLock
-
-try:
-    # Python 3
-    from collections.abc import Iterable
-    from collections.abc import MutableMapping
-except ImportError:
-    # Python 2.7
-    from collections import Iterable
-    from collections import MutableMapping
-
-try:
-    from collections import OrderedDict as _OrderedDict
-except ImportError:
-    try:
-        from ordereddict import OrderedDict as _OrderedDict
-    except ImportError:
-        _OrderedDict = None
-
-#~ sys.stderr.write( "testing pyparsing module, version %s, %s\n" % (__version__,__versionTime__ ) )
-
-__all__ = [
-'And', 'CaselessKeyword', 'CaselessLiteral', 'CharsNotIn', 'Combine', 'Dict', 'Each', 'Empty',
-'FollowedBy', 'Forward', 'GoToColumn', 'Group', 'Keyword', 'LineEnd', 'LineStart', 'Literal',
-'MatchFirst', 'NoMatch', 'NotAny', 'OneOrMore', 'OnlyOnce', 'Optional', 'Or',
-'ParseBaseException', 'ParseElementEnhance', 'ParseException', 'ParseExpression', 'ParseFatalException',
-'ParseResults', 'ParseSyntaxException', 'ParserElement', 'QuotedString', 'RecursiveGrammarException',
-'Regex', 'SkipTo', 'StringEnd', 'StringStart', 'Suppress', 'Token', 'TokenConverter', 
-'White', 'Word', 'WordEnd', 'WordStart', 'ZeroOrMore',
-'alphanums', 'alphas', 'alphas8bit', 'anyCloseTag', 'anyOpenTag', 'cStyleComment', 'col',
-'commaSeparatedList', 'commonHTMLEntity', 'countedArray', 'cppStyleComment', 'dblQuotedString',
-'dblSlashComment', 'delimitedList', 'dictOf', 'downcaseTokens', 'empty', 'hexnums',
-'htmlComment', 'javaStyleComment', 'line', 'lineEnd', 'lineStart', 'lineno',
-'makeHTMLTags', 'makeXMLTags', 'matchOnlyAtCol', 'matchPreviousExpr', 'matchPreviousLiteral',
-'nestedExpr', 'nullDebugAction', 'nums', 'oneOf', 'opAssoc', 'operatorPrecedence', 'printables',
-'punc8bit', 'pythonStyleComment', 'quotedString', 'removeQuotes', 'replaceHTMLEntity', 
-'replaceWith', 'restOfLine', 'sglQuotedString', 'srange', 'stringEnd',
-'stringStart', 'traceParseAction', 'unicodeString', 'upcaseTokens', 'withAttribute',
-'indentedBlock', 'originalTextFor', 'ungroup', 'infixNotation','locatedExpr', 'withClass',
-'CloseMatch', 'tokenMap', 'pyparsing_common',
-]
-
-system_version = tuple(sys.version_info)[:3]
-PY_3 = system_version[0] == 3
-if PY_3:
-    _MAX_INT = sys.maxsize
-    basestring = str
-    unichr = chr
-    _ustr = str
-
-    # build list of single arg builtins, that can be used as parse actions
-    singleArgBuiltins = [sum, len, sorted, reversed, list, tuple, set, any, all, min, max]
-
-else:
-    _MAX_INT = sys.maxint
-    range = xrange
-
-    def _ustr(obj):
-        """Drop-in replacement for str(obj) that tries to be Unicode friendly. It first tries
-           str(obj). If that fails with a UnicodeEncodeError, then it tries unicode(obj). It
-           then < returns the unicode object | encodes it with the default encoding | ... >.
-        """
-        if isinstance(obj,unicode):
-            return obj
-
-        try:
-            # If this works, then _ustr(obj) has the same behaviour as str(obj), so
-            # it won't break any existing code.
-            return str(obj)
-
-        except UnicodeEncodeError:
-            # Else encode it
-            ret = unicode(obj).encode(sys.getdefaultencoding(), 'xmlcharrefreplace')
-            xmlcharref = Regex(r'&#\d+;')
-            xmlcharref.setParseAction(lambda t: '\\u' + hex(int(t[0][2:-1]))[2:])
-            return xmlcharref.transformString(ret)
-
-    # build list of single arg builtins, tolerant of Python version, that can be used as parse actions
-    singleArgBuiltins = []
-    import __builtin__
-    for fname in "sum len sorted reversed list tuple set any all min max".split():
-        try:
-            singleArgBuiltins.append(getattr(__builtin__,fname))
-        except AttributeError:
-            continue
-            
-_generatorType = type((y for y in range(1)))
- 
-def _xml_escape(data):
-    """Escape &, <, >, ", ', etc. in a string of data."""
-
-    # ampersand must be replaced first
-    from_symbols = '&><"\''
-    to_symbols = ('&'+s+';' for s in "amp gt lt quot apos".split())
-    for from_,to_ in zip(from_symbols, to_symbols):
-        data = data.replace(from_, to_)
-    return data
-
-class _Constants(object):
-    pass
-
-alphas     = string.ascii_uppercase + string.ascii_lowercase
-nums       = "0123456789"
-hexnums    = nums + "ABCDEFabcdef"
-alphanums  = alphas + nums
-_bslash    = chr(92)
-printables = "".join(c for c in string.printable if c not in string.whitespace)
-
-class ParseBaseException(Exception):
-    """base exception class for all parsing runtime exceptions"""
-    # Performance tuning: we construct a *lot* of these, so keep this
-    # constructor as small and fast as possible
-    def __init__( self, pstr, loc=0, msg=None, elem=None ):
-        self.loc = loc
-        if msg is None:
-            self.msg = pstr
-            self.pstr = ""
-        else:
-            self.msg = msg
-            self.pstr = pstr
-        self.parserElement = elem
-        self.args = (pstr, loc, msg)
-
-    @classmethod
-    def _from_exception(cls, pe):
-        """
-        internal factory method to simplify creating one type of ParseException 
-        from another - avoids having __init__ signature conflicts among subclasses
-        """
-        return cls(pe.pstr, pe.loc, pe.msg, pe.parserElement)
-
-    def __getattr__( self, aname ):
-        """supported attributes by name are:
-            - lineno - returns the line number of the exception text
-            - col - returns the column number of the exception text
-            - line - returns the line containing the exception text
-        """
-        if( aname == "lineno" ):
-            return lineno( self.loc, self.pstr )
-        elif( aname in ("col", "column") ):
-            return col( self.loc, self.pstr )
-        elif( aname == "line" ):
-            return line( self.loc, self.pstr )
-        else:
-            raise AttributeError(aname)
-
-    def __str__( self ):
-        return "%s (at char %d), (line:%d, col:%d)" % \
-                ( self.msg, self.loc, self.lineno, self.column )
-    def __repr__( self ):
-        return _ustr(self)
-    def markInputline( self, markerString = ">!<" ):
-        """Extracts the exception line from the input string, and marks
-           the location of the exception with a special symbol.
-        """
-        line_str = self.line
-        line_column = self.column - 1
-        if markerString:
-            line_str = "".join((line_str[:line_column],
-                                markerString, line_str[line_column:]))
-        return line_str.strip()
-    def __dir__(self):
-        return "lineno col line".split() + dir(type(self))
-
-class ParseException(ParseBaseException):
-    """
-    Exception thrown when parse expressions don't match class;
-    supported attributes by name are:
-     - lineno - returns the line number of the exception text
-     - col - returns the column number of the exception text
-     - line - returns the line containing the exception text
-        
-    Example::
-        try:
-            Word(nums).setName("integer").parseString("ABC")
-        except ParseException as pe:
-            print(pe)
-            print("column: {}".format(pe.col))
-            
-    prints::
-       Expected integer (at char 0), (line:1, col:1)
-        column: 1
-    """
-    pass
-
-class ParseFatalException(ParseBaseException):
-    """user-throwable exception thrown when inconsistent parse content
-       is found; stops all parsing immediately"""
-    pass
-
-class ParseSyntaxException(ParseFatalException):
-    """just like L{ParseFatalException}, but thrown internally when an
-       L{ErrorStop<And._ErrorStop>} ('-' operator) indicates that parsing is to stop 
-       immediately because an unbacktrackable syntax error has been found"""
-    pass
-
-#~ class ReparseException(ParseBaseException):
-    #~ """Experimental class - parse actions can raise this exception to cause
-       #~ pyparsing to reparse the input string:
-        #~ - with a modified input string, and/or
-        #~ - with a modified start location
-       #~ Set the values of the ReparseException in the constructor, and raise the
-       #~ exception in a parse action to cause pyparsing to use the new string/location.
-       #~ Setting the values as None causes no change to be made.
-       #~ """
-    #~ def __init_( self, newstring, restartLoc ):
-        #~ self.newParseText = newstring
-        #~ self.reparseLoc = restartLoc
-
-class RecursiveGrammarException(Exception):
-    """exception thrown by L{ParserElement.validate} if the grammar could be improperly recursive"""
-    def __init__( self, parseElementList ):
-        self.parseElementTrace = parseElementList
-
-    def __str__( self ):
-        return "RecursiveGrammarException: %s" % self.parseElementTrace
-
-class _ParseResultsWithOffset(object):
-    def __init__(self,p1,p2):
-        self.tup = (p1,p2)
-    def __getitem__(self,i):
-        return self.tup[i]
-    def __repr__(self):
-        return repr(self.tup[0])
-    def setOffset(self,i):
-        self.tup = (self.tup[0],i)
-
-class ParseResults(object):
-    """
-    Structured parse results, to provide multiple means of access to the parsed data:
-       - as a list (C{len(results)})
-       - by list index (C{results[0], results[1]}, etc.)
-       - by attribute (C{results.<resultsName>} - see L{ParserElement.setResultsName})
-
-    Example::
-        integer = Word(nums)
-        date_str = (integer.setResultsName("year") + '/' 
-                        + integer.setResultsName("month") + '/' 
-                        + integer.setResultsName("day"))
-        # equivalent form:
-        # date_str = integer("year") + '/' + integer("month") + '/' + integer("day")
-
-        # parseString returns a ParseResults object
-        result = date_str.parseString("1999/12/31")
-
-        def test(s, fn=repr):
-            print("%s -> %s" % (s, fn(eval(s))))
-        test("list(result)")
-        test("result[0]")
-        test("result['month']")
-        test("result.day")
-        test("'month' in result")
-        test("'minutes' in result")
-        test("result.dump()", str)
-    prints::
-        list(result) -> ['1999', '/', '12', '/', '31']
-        result[0] -> '1999'
-        result['month'] -> '12'
-        result.day -> '31'
-        'month' in result -> True
-        'minutes' in result -> False
-        result.dump() -> ['1999', '/', '12', '/', '31']
-        - day: 31
-        - month: 12
-        - year: 1999
-    """
-    def __new__(cls, toklist=None, name=None, asList=True, modal=True ):
-        if isinstance(toklist, cls):
-            return toklist
-        retobj = object.__new__(cls)
-        retobj.__doinit = True
-        return retobj
-
-    # Performance tuning: we construct a *lot* of these, so keep this
-    # constructor as small and fast as possible
-    def __init__( self, toklist=None, name=None, asList=True, modal=True, isinstance=isinstance ):
-        if self.__doinit:
-            self.__doinit = False
-            self.__name = None
-            self.__parent = None
-            self.__accumNames = {}
-            self.__asList = asList
-            self.__modal = modal
-            if toklist is None:
-                toklist = []
-            if isinstance(toklist, list):
-                self.__toklist = toklist[:]
-            elif isinstance(toklist, _generatorType):
-                self.__toklist = list(toklist)
-            else:
-                self.__toklist = [toklist]
-            self.__tokdict = dict()
-
-        if name is not None and name:
-            if not modal:
-                self.__accumNames[name] = 0
-            if isinstance(name,int):
-                name = _ustr(name) # will always return a str, but use _ustr for consistency
-            self.__name = name
-            if not (isinstance(toklist, (type(None), basestring, list)) and toklist in (None,'',[])):
-                if isinstance(toklist,basestring):
-                    toklist = [ toklist ]
-                if asList:
-                    if isinstance(toklist,ParseResults):
-                        self[name] = _ParseResultsWithOffset(toklist.copy(),0)
-                    else:
-                        self[name] = _ParseResultsWithOffset(ParseResults(toklist[0]),0)
-                    self[name].__name = name
-                else:
-                    try:
-                        self[name] = toklist[0]
-                    except (KeyError,TypeError,IndexError):
-                        self[name] = toklist
-
-    def __getitem__( self, i ):
-        if isinstance( i, (int,slice) ):
-            return self.__toklist[i]
-        else:
-            if i not in self.__accumNames:
-                return self.__tokdict[i][-1][0]
-            else:
-                return ParseResults([ v[0] for v in self.__tokdict[i] ])
-
-    def __setitem__( self, k, v, isinstance=isinstance ):
-        if isinstance(v,_ParseResultsWithOffset):
-            self.__tokdict[k] = self.__tokdict.get(k,list()) + [v]
-            sub = v[0]
-        elif isinstance(k,(int,slice)):
-            self.__toklist[k] = v
-            sub = v
-        else:
-            self.__tokdict[k] = self.__tokdict.get(k,list()) + [_ParseResultsWithOffset(v,0)]
-            sub = v
-        if isinstance(sub,ParseResults):
-            sub.__parent = wkref(self)
-
-    def __delitem__( self, i ):
-        if isinstance(i,(int,slice)):
-            mylen = len( self.__toklist )
-            del self.__toklist[i]
-
-            # convert int to slice
-            if isinstance(i, int):
-                if i < 0:
-                    i += mylen
-                i = slice(i, i+1)
-            # get removed indices
-            removed = list(range(*i.indices(mylen)))
-            removed.reverse()
-            # fixup indices in token dictionary
-            for name,occurrences in self.__tokdict.items():
-                for j in removed:
-                    for k, (value, position) in enumerate(occurrences):
-                        occurrences[k] = _ParseResultsWithOffset(value, position - (position > j))
-        else:
-            del self.__tokdict[i]
-
-    def __contains__( self, k ):
-        return k in self.__tokdict
-
-    def __len__( self ): return len( self.__toklist )
-    def __bool__(self): return ( not not self.__toklist )
-    __nonzero__ = __bool__
-    def __iter__( self ): return iter( self.__toklist )
-    def __reversed__( self ): return iter( self.__toklist[::-1] )
-    def _iterkeys( self ):
-        if hasattr(self.__tokdict, "iterkeys"):
-            return self.__tokdict.iterkeys()
-        else:
-            return iter(self.__tokdict)
-
-    def _itervalues( self ):
-        return (self[k] for k in self._iterkeys())
-            
-    def _iteritems( self ):
-        return ((k, self[k]) for k in self._iterkeys())
-
-    if PY_3:
-        keys = _iterkeys       
-        """Returns an iterator of all named result keys (Python 3.x only)."""
-
-        values = _itervalues
-        """Returns an iterator of all named result values (Python 3.x only)."""
-
-        items = _iteritems
-        """Returns an iterator of all named result key-value tuples (Python 3.x only)."""
-
-    else:
-        iterkeys = _iterkeys
-        """Returns an iterator of all named result keys (Python 2.x only)."""
-
-        itervalues = _itervalues
-        """Returns an iterator of all named result values (Python 2.x only)."""
-
-        iteritems = _iteritems
-        """Returns an iterator of all named result key-value tuples (Python 2.x only)."""
-
-        def keys( self ):
-            """Returns all named result keys (as a list in Python 2.x, as an iterator in Python 3.x)."""
-            return list(self.iterkeys())
-
-        def values( self ):
-            """Returns all named result values (as a list in Python 2.x, as an iterator in Python 3.x)."""
-            return list(self.itervalues())
-                
-        def items( self ):
-            """Returns all named result key-values (as a list of tuples in Python 2.x, as an iterator in Python 3.x)."""
-            return list(self.iteritems())
-
-    def haskeys( self ):
-        """Since keys() returns an iterator, this method is helpful in bypassing
-           code that looks for the existence of any defined results names."""
-        return bool(self.__tokdict)
-        
-    def pop( self, *args, **kwargs):
-        """
-        Removes and returns item at specified index (default=C{last}).
-        Supports both C{list} and C{dict} semantics for C{pop()}. If passed no
-        argument or an integer argument, it will use C{list} semantics
-        and pop tokens from the list of parsed tokens. If passed a 
-        non-integer argument (most likely a string), it will use C{dict}
-        semantics and pop the corresponding value from any defined 
-        results names. A second default return value argument is 
-        supported, just as in C{dict.pop()}.
-
-        Example::
-            def remove_first(tokens):
-                tokens.pop(0)
-            print(OneOrMore(Word(nums)).parseString("0 123 321")) # -> ['0', '123', '321']
-            print(OneOrMore(Word(nums)).addParseAction(remove_first).parseString("0 123 321")) # -> ['123', '321']
-
-            label = Word(alphas)
-            patt = label("LABEL") + OneOrMore(Word(nums))
-            print(patt.parseString("AAB 123 321").dump())
-
-            # Use pop() in a parse action to remove named result (note that corresponding value is not
-            # removed from list form of results)
-            def remove_LABEL(tokens):
-                tokens.pop("LABEL")
-                return tokens
-            patt.addParseAction(remove_LABEL)
-            print(patt.parseString("AAB 123 321").dump())
-        prints::
-            ['AAB', '123', '321']
-            - LABEL: AAB
-
-            ['AAB', '123', '321']
-        """
-        if not args:
-            args = [-1]
-        for k,v in kwargs.items():
-            if k == 'default':
-                args = (args[0], v)
-            else:
-                raise TypeError("pop() got an unexpected keyword argument '%s'" % k)
-        if (isinstance(args[0], int) or 
-                        len(args) == 1 or 
-                        args[0] in self):
-            index = args[0]
-            ret = self[index]
-            del self[index]
-            return ret
-        else:
-            defaultvalue = args[1]
-            return defaultvalue
-
-    def get(self, key, defaultValue=None):
-        """
-        Returns named result matching the given key, or if there is no
-        such name, then returns the given C{defaultValue} or C{None} if no
-        C{defaultValue} is specified.
-
-        Similar to C{dict.get()}.
-        
-        Example::
-            integer = Word(nums)
-            date_str = integer("year") + '/' + integer("month") + '/' + integer("day")           
-
-            result = date_str.parseString("1999/12/31")
-            print(result.get("year")) # -> '1999'
-            print(result.get("hour", "not specified")) # -> 'not specified'
-            print(result.get("hour")) # -> None
-        """
-        if key in self:
-            return self[key]
-        else:
-            return defaultValue
-
-    def insert( self, index, insStr ):
-        """
-        Inserts new element at location index in the list of parsed tokens.
-        
-        Similar to C{list.insert()}.
-
-        Example::
-            print(OneOrMore(Word(nums)).parseString("0 123 321")) # -> ['0', '123', '321']
-
-            # use a parse action to insert the parse location in the front of the parsed results
-            def insert_locn(locn, tokens):
-                tokens.insert(0, locn)
-            print(OneOrMore(Word(nums)).addParseAction(insert_locn).parseString("0 123 321")) # -> [0, '0', '123', '321']
-        """
-        self.__toklist.insert(index, insStr)
-        # fixup indices in token dictionary
-        for name,occurrences in self.__tokdict.items():
-            for k, (value, position) in enumerate(occurrences):
-                occurrences[k] = _ParseResultsWithOffset(value, position + (position > index))
-
-    def append( self, item ):
-        """
-        Add single element to end of ParseResults list of elements.
-
-        Example::
-            print(OneOrMore(Word(nums)).parseString("0 123 321")) # -> ['0', '123', '321']
-            
-            # use a parse action to compute the sum of the parsed integers, and add it to the end
-            def append_sum(tokens):
-                tokens.append(sum(map(int, tokens)))
-            print(OneOrMore(Word(nums)).addParseAction(append_sum).parseString("0 123 321")) # -> ['0', '123', '321', 444]
-        """
-        self.__toklist.append(item)
-
-    def extend( self, itemseq ):
-        """
-        Add sequence of elements to end of ParseResults list of elements.
-
-        Example::
-            patt = OneOrMore(Word(alphas))
-            
-            # use a parse action to append the reverse of the matched strings, to make a palindrome
-            def make_palindrome(tokens):
-                tokens.extend(reversed([t[::-1] for t in tokens]))
-                return ''.join(tokens)
-            print(patt.addParseAction(make_palindrome).parseString("lskdj sdlkjf lksd")) # -> 'lskdjsdlkjflksddsklfjkldsjdksl'
-        """
-        if isinstance(itemseq, ParseResults):
-            self += itemseq
-        else:
-            self.__toklist.extend(itemseq)
-
-    def clear( self ):
-        """
-        Clear all elements and results names.
-        """
-        del self.__toklist[:]
-        self.__tokdict.clear()
-
-    def __getattr__( self, name ):
-        try:
-            return self[name]
-        except KeyError:
-            return ""
-            
-        if name in self.__tokdict:
-            if name not in self.__accumNames:
-                return self.__tokdict[name][-1][0]
-            else:
-                return ParseResults([ v[0] for v in self.__tokdict[name] ])
-        else:
-            return ""
-
-    def __add__( self, other ):
-        ret = self.copy()
-        ret += other
-        return ret
-
-    def __iadd__( self, other ):
-        if other.__tokdict:
-            offset = len(self.__toklist)
-            addoffset = lambda a: offset if a<0 else a+offset
-            otheritems = other.__tokdict.items()
-            otherdictitems = [(k, _ParseResultsWithOffset(v[0],addoffset(v[1])) )
-                                for (k,vlist) in otheritems for v in vlist]
-            for k,v in otherdictitems:
-                self[k] = v
-                if isinstance(v[0],ParseResults):
-                    v[0].__parent = wkref(self)
-            
-        self.__toklist += other.__toklist
-        self.__accumNames.update( other.__accumNames )
-        return self
-
-    def __radd__(self, other):
-        if isinstance(other,int) and other == 0:
-            # useful for merging many ParseResults using sum() builtin
-            return self.copy()
-        else:
-            # this may raise a TypeError - so be it
-            return other + self
-        
-    def __repr__( self ):
-        return "(%s, %s)" % ( repr( self.__toklist ), repr( self.__tokdict ) )
-
-    def __str__( self ):
-        return '[' + ', '.join(_ustr(i) if isinstance(i, ParseResults) else repr(i) for i in self.__toklist) + ']'
-
-    def _asStringList( self, sep='' ):
-        out = []
-        for item in self.__toklist:
-            if out and sep:
-                out.append(sep)
-            if isinstance( item, ParseResults ):
-                out += item._asStringList()
-            else:
-                out.append( _ustr(item) )
-        return out
-
-    def asList( self ):
-        """
-        Returns the parse results as a nested list of matching tokens, all converted to strings.
-
-        Example::
-            patt = OneOrMore(Word(alphas))
-            result = patt.parseString("sldkj lsdkj sldkj")
-            # even though the result prints in string-like form, it is actually a pyparsing ParseResults
-            print(type(result), result) # -> <class 'pyparsing.ParseResults'> ['sldkj', 'lsdkj', 'sldkj']
-            
-            # Use asList() to create an actual list
-            result_list = result.asList()
-            print(type(result_list), result_list) # -> <class 'list'> ['sldkj', 'lsdkj', 'sldkj']
-        """
-        return [res.asList() if isinstance(res,ParseResults) else res for res in self.__toklist]
-
-    def asDict( self ):
-        """
-        Returns the named parse results as a nested dictionary.
-
-        Example::
-            integer = Word(nums)
-            date_str = integer("year") + '/' + integer("month") + '/' + integer("day")
-            
-            result = date_str.parseString('12/31/1999')
-            print(type(result), repr(result)) # -> <class 'pyparsing.ParseResults'> (['12', '/', '31', '/', '1999'], {'day': [('1999', 4)], 'year': [('12', 0)], 'month': [('31', 2)]})
-            
-            result_dict = result.asDict()
-            print(type(result_dict), repr(result_dict)) # -> <class 'dict'> {'day': '1999', 'year': '12', 'month': '31'}
-
-            # even though a ParseResults supports dict-like access, sometime you just need to have a dict
-            import json
-            print(json.dumps(result)) # -> Exception: TypeError: ... is not JSON serializable
-            print(json.dumps(result.asDict())) # -> {"month": "31", "day": "1999", "year": "12"}
-        """
-        if PY_3:
-            item_fn = self.items
-        else:
-            item_fn = self.iteritems
-            
-        def toItem(obj):
-            if isinstance(obj, ParseResults):
-                if obj.haskeys():
-                    return obj.asDict()
-                else:
-                    return [toItem(v) for v in obj]
-            else:
-                return obj
-                
-        return dict((k,toItem(v)) for k,v in item_fn())
-
-    def copy( self ):
-        """
-        Returns a new copy of a C{ParseResults} object.
-        """
-        ret = ParseResults( self.__toklist )
-        ret.__tokdict = self.__tokdict.copy()
-        ret.__parent = self.__parent
-        ret.__accumNames.update( self.__accumNames )
-        ret.__name = self.__name
-        return ret
-
-    def asXML( self, doctag=None, namedItemsOnly=False, indent="", formatted=True ):
-        """
-        (Deprecated) Returns the parse results as XML. Tags are created for tokens and lists that have defined results names.
-        """
-        nl = "\n"
-        out = []
-        namedItems = dict((v[1],k) for (k,vlist) in self.__tokdict.items()
-                                                            for v in vlist)
-        nextLevelIndent = indent + "  "
-
-        # collapse out indents if formatting is not desired
-        if not formatted:
-            indent = ""
-            nextLevelIndent = ""
-            nl = ""
-
-        selfTag = None
-        if doctag is not None:
-            selfTag = doctag
-        else:
-            if self.__name:
-                selfTag = self.__name
-
-        if not selfTag:
-            if namedItemsOnly:
-                return ""
-            else:
-                selfTag = "ITEM"
-
-        out += [ nl, indent, "<", selfTag, ">" ]
-
-        for i,res in enumerate(self.__toklist):
-            if isinstance(res,ParseResults):
-                if i in namedItems:
-                    out += [ res.asXML(namedItems[i],
-                                        namedItemsOnly and doctag is None,
-                                        nextLevelIndent,
-                                        formatted)]
-                else:
-                    out += [ res.asXML(None,
-                                        namedItemsOnly and doctag is None,
-                                        nextLevelIndent,
-                                        formatted)]
-            else:
-                # individual token, see if there is a name for it
-                resTag = None
-                if i in namedItems:
-                    resTag = namedItems[i]
-                if not resTag:
-                    if namedItemsOnly:
-                        continue
-                    else:
-                        resTag = "ITEM"
-                xmlBodyText = _xml_escape(_ustr(res))
-                out += [ nl, nextLevelIndent, "<", resTag, ">",
-                                                xmlBodyText,
-                                                "</", resTag, ">" ]
-
-        out += [ nl, indent, "</", selfTag, ">" ]
-        return "".join(out)
-
-    def __lookup(self,sub):
-        for k,vlist in self.__tokdict.items():
-            for v,loc in vlist:
-                if sub is v:
-                    return k
-        return None
-
-    def getName(self):
-        r"""
-        Returns the results name for this token expression. Useful when several 
-        different expressions might match at a particular location.
-
-        Example::
-            integer = Word(nums)
-            ssn_expr = Regex(r"\d\d\d-\d\d-\d\d\d\d")
-            house_number_expr = Suppress('#') + Word(nums, alphanums)
-            user_data = (Group(house_number_expr)("house_number") 
-                        | Group(ssn_expr)("ssn")
-                        | Group(integer)("age"))
-            user_info = OneOrMore(user_data)
-            
-            result = user_info.parseString("22 111-22-3333 #221B")
-            for item in result:
-                print(item.getName(), ':', item[0])
-        prints::
-            age : 22
-            ssn : 111-22-3333
-            house_number : 221B
-        """
-        if self.__name:
-            return self.__name
-        elif self.__parent:
-            par = self.__parent()
-            if par:
-                return par.__lookup(self)
-            else:
-                return None
-        elif (len(self) == 1 and
-               len(self.__tokdict) == 1 and
-               next(iter(self.__tokdict.values()))[0][1] in (0,-1)):
-            return next(iter(self.__tokdict.keys()))
-        else:
-            return None
-
-    def dump(self, indent='', depth=0, full=True):
-        """
-        Diagnostic method for listing out the contents of a C{ParseResults}.
-        Accepts an optional C{indent} argument so that this string can be embedded
-        in a nested display of other data.
-
-        Example::
-            integer = Word(nums)
-            date_str = integer("year") + '/' + integer("month") + '/' + integer("day")
-            
-            result = date_str.parseString('12/31/1999')
-            print(result.dump())
-        prints::
-            ['12', '/', '31', '/', '1999']
-            - day: 1999
-            - month: 31
-            - year: 12
-        """
-        out = []
-        NL = '\n'
-        out.append( indent+_ustr(self.asList()) )
-        if full:
-            if self.haskeys():
-                items = sorted((str(k), v) for k,v in self.items())
-                for k,v in items:
-                    if out:
-                        out.append(NL)
-                    out.append( "%s%s- %s: " % (indent,('  '*depth), k) )
-                    if isinstance(v,ParseResults):
-                        if v:
-                            out.append( v.dump(indent,depth+1) )
-                        else:
-                            out.append(_ustr(v))
-                    else:
-                        out.append(repr(v))
-            elif any(isinstance(vv,ParseResults) for vv in self):
-                v = self
-                for i,vv in enumerate(v):
-                    if isinstance(vv,ParseResults):
-                        out.append("\n%s%s[%d]:\n%s%s%s" % (indent,('  '*(depth)),i,indent,('  '*(depth+1)),vv.dump(indent,depth+1) ))
-                    else:
-                        out.append("\n%s%s[%d]:\n%s%s%s" % (indent,('  '*(depth)),i,indent,('  '*(depth+1)),_ustr(vv)))
-            
-        return "".join(out)
-
-    def pprint(self, *args, **kwargs):
-        """
-        Pretty-printer for parsed results as a list, using the C{pprint} module.
-        Accepts additional positional or keyword args as defined for the 
-        C{pprint.pprint} method. (U{http://docs.python.org/3/library/pprint.html#pprint.pprint})
-
-        Example::
-            ident = Word(alphas, alphanums)
-            num = Word(nums)
-            func = Forward()
-            term = ident | num | Group('(' + func + ')')
-            func <<= ident + Group(Optional(delimitedList(term)))
-            result = func.parseString("fna a,b,(fnb c,d,200),100")
-            result.pprint(width=40)
-        prints::
-            ['fna',
-             ['a',
-              'b',
-              ['(', 'fnb', ['c', 'd', '200'], ')'],
-              '100']]
-        """
-        pprint.pprint(self.asList(), *args, **kwargs)
-
-    # add support for pickle protocol
-    def __getstate__(self):
-        return ( self.__toklist,
-                 ( self.__tokdict.copy(),
-                   self.__parent is not None and self.__parent() or None,
-                   self.__accumNames,
-                   self.__name ) )
-
-    def __setstate__(self,state):
-        self.__toklist = state[0]
-        (self.__tokdict,
-         par,
-         inAccumNames,
-         self.__name) = state[1]
-        self.__accumNames = {}
-        self.__accumNames.update(inAccumNames)
-        if par is not None:
-            self.__parent = wkref(par)
-        else:
-            self.__parent = None
-
-    def __getnewargs__(self):
-        return self.__toklist, self.__name, self.__asList, self.__modal
-
-    def __dir__(self):
-        return (dir(type(self)) + list(self.keys()))
-
-MutableMapping.register(ParseResults)
-
-def col (loc,strg):
-    """Returns current column within a string, counting newlines as line separators.
-   The first column is number 1.
-
-   Note: the default parsing behavior is to expand tabs in the input string
-   before starting the parsing process.  See L{I{ParserElement.parseString}<ParserElement.parseString>} for more information
-   on parsing strings containing C{<TAB>}s, and suggested methods to maintain a
-   consistent view of the parsed string, the parse location, and line and column
-   positions within the parsed string.
-   """
-    s = strg
-    return 1 if 0<loc<len(s) and s[loc-1] == '\n' else loc - s.rfind("\n", 0, loc)
-
-def lineno(loc,strg):
-    """Returns current line number within a string, counting newlines as line separators.
-   The first line is number 1.
-
-   Note: the default parsing behavior is to expand tabs in the input string
-   before starting the parsing process.  See L{I{ParserElement.parseString}<ParserElement.parseString>} for more information
-   on parsing strings containing C{<TAB>}s, and suggested methods to maintain a
-   consistent view of the parsed string, the parse location, and line and column
-   positions within the parsed string.
-   """
-    return strg.count("\n",0,loc) + 1
-
-def line( loc, strg ):
-    """Returns the line of text containing loc within a string, counting newlines as line separators.
-       """
-    lastCR = strg.rfind("\n", 0, loc)
-    nextCR = strg.find("\n", loc)
-    if nextCR >= 0:
-        return strg[lastCR+1:nextCR]
-    else:
-        return strg[lastCR+1:]
-
-def _defaultStartDebugAction( instring, loc, expr ):
-    print (("Match " + _ustr(expr) + " at loc " + _ustr(loc) + "(%d,%d)" % ( lineno(loc,instring), col(loc,instring) )))
-
-def _defaultSuccessDebugAction( instring, startloc, endloc, expr, toks ):
-    print ("Matched " + _ustr(expr) + " -> " + str(toks.asList()))
-
-def _defaultExceptionDebugAction( instring, loc, expr, exc ):
-    print ("Exception raised:" + _ustr(exc))
-
-def nullDebugAction(*args):
-    """'Do-nothing' debug action, to suppress debugging output during parsing."""
-    pass
-
-# Only works on Python 3.x - nonlocal is toxic to Python 2 installs
-#~ 'decorator to trim function calls to match the arity of the target'
-#~ def _trim_arity(func, maxargs=3):
-    #~ if func in singleArgBuiltins:
-        #~ return lambda s,l,t: func(t)
-    #~ limit = 0
-    #~ foundArity = False
-    #~ def wrapper(*args):
-        #~ nonlocal limit,foundArity
-        #~ while 1:
-            #~ try:
-                #~ ret = func(*args[limit:])
-                #~ foundArity = True
-                #~ return ret
-            #~ except TypeError:
-                #~ if limit == maxargs or foundArity:
-                    #~ raise
-                #~ limit += 1
-                #~ continue
-    #~ return wrapper
-
-# this version is Python 2.x-3.x cross-compatible
-'decorator to trim function calls to match the arity of the target'
-def _trim_arity(func, maxargs=2):
-    if func in singleArgBuiltins:
-        return lambda s,l,t: func(t)
-    limit = [0]
-    foundArity = [False]
-    
-    # traceback return data structure changed in Py3.5 - normalize back to plain tuples
-    if system_version[:2] >= (3,5):
-        def extract_stack(limit=0):
-            # special handling for Python 3.5.0 - extra deep call stack by 1
-            offset = -3 if system_version == (3,5,0) else -2
-            frame_summary = traceback.extract_stack(limit=-offset+limit-1)[offset]
-            return [frame_summary[:2]]
-        def extract_tb(tb, limit=0):
-            frames = traceback.extract_tb(tb, limit=limit)
-            frame_summary = frames[-1]
-            return [frame_summary[:2]]
-    else:
-        extract_stack = traceback.extract_stack
-        extract_tb = traceback.extract_tb
-    
-    # synthesize what would be returned by traceback.extract_stack at the call to 
-    # user's parse action 'func', so that we don't incur call penalty at parse time
-    
-    LINE_DIFF = 6
-    # IF ANY CODE CHANGES, EVEN JUST COMMENTS OR BLANK LINES, BETWEEN THE NEXT LINE AND 
-    # THE CALL TO FUNC INSIDE WRAPPER, LINE_DIFF MUST BE MODIFIED!!!!
-    this_line = extract_stack(limit=2)[-1]
-    pa_call_line_synth = (this_line[0], this_line[1]+LINE_DIFF)
-
-    def wrapper(*args):
-        while 1:
-            try:
-                ret = func(*args[limit[0]:])
-                foundArity[0] = True
-                return ret
-            except TypeError:
-                # re-raise TypeErrors if they did not come from our arity testing
-                if foundArity[0]:
-                    raise
-                else:
-                    try:
-                        tb = sys.exc_info()[-1]
-                        if not extract_tb(tb, limit=2)[-1][:2] == pa_call_line_synth:
-                            raise
-                    finally:
-                        del tb
-
-                if limit[0] <= maxargs:
-                    limit[0] += 1
-                    continue
-                raise
-
-    # copy func name to wrapper for sensible debug output
-    func_name = "<parse action>"
-    try:
-        func_name = getattr(func, '__name__', 
-                            getattr(func, '__class__').__name__)
-    except Exception:
-        func_name = str(func)
-    wrapper.__name__ = func_name
-
-    return wrapper
-
-class ParserElement(object):
-    """Abstract base level parser element class."""
-    DEFAULT_WHITE_CHARS = " \n\t\r"
-    verbose_stacktrace = False
-
-    @staticmethod
-    def setDefaultWhitespaceChars( chars ):
-        r"""
-        Overrides the default whitespace chars
-
-        Example::
-            # default whitespace chars are space, <TAB> and newline
-            OneOrMore(Word(alphas)).parseString("abc def\nghi jkl")  # -> ['abc', 'def', 'ghi', 'jkl']
-            
-            # change to just treat newline as significant
-            ParserElement.setDefaultWhitespaceChars(" \t")
-            OneOrMore(Word(alphas)).parseString("abc def\nghi jkl")  # -> ['abc', 'def']
-        """
-        ParserElement.DEFAULT_WHITE_CHARS = chars
-
-    @staticmethod
-    def inlineLiteralsUsing(cls):
-        """
-        Set class to be used for inclusion of string literals into a parser.
-        
-        Example::
-            # default literal class used is Literal
-            integer = Word(nums)
-            date_str = integer("year") + '/' + integer("month") + '/' + integer("day")           
-
-            date_str.parseString("1999/12/31")  # -> ['1999', '/', '12', '/', '31']
-
-
-            # change to Suppress
-            ParserElement.inlineLiteralsUsing(Suppress)
-            date_str = integer("year") + '/' + integer("month") + '/' + integer("day")           
-
-            date_str.parseString("1999/12/31")  # -> ['1999', '12', '31']
-        """
-        ParserElement._literalStringClass = cls
-
-    def __init__( self, savelist=False ):
-        self.parseAction = list()
-        self.failAction = None
-        #~ self.name = "<unknown>"  # don't define self.name, let subclasses try/except upcall
-        self.strRepr = None
-        self.resultsName = None
-        self.saveAsList = savelist
-        self.skipWhitespace = True
-        self.whiteChars = ParserElement.DEFAULT_WHITE_CHARS
-        self.copyDefaultWhiteChars = True
-        self.mayReturnEmpty = False # used when checking for left-recursion
-        self.keepTabs = False
-        self.ignoreExprs = list()
-        self.debug = False
-        self.streamlined = False
-        self.mayIndexError = True # used to optimize exception handling for subclasses that don't advance parse index
-        self.errmsg = ""
-        self.modalResults = True # used to mark results names as modal (report only last) or cumulative (list all)
-        self.debugActions = ( None, None, None ) #custom debug actions
-        self.re = None
-        self.callPreparse = True # used to avoid redundant calls to preParse
-        self.callDuringTry = False
-
-    def copy( self ):
-        """
-        Make a copy of this C{ParserElement}.  Useful for defining different parse actions
-        for the same parsing pattern, using copies of the original parse element.
-        
-        Example::
-            integer = Word(nums).setParseAction(lambda toks: int(toks[0]))
-            integerK = integer.copy().addParseAction(lambda toks: toks[0]*1024) + Suppress("K")
-            integerM = integer.copy().addParseAction(lambda toks: toks[0]*1024*1024) + Suppress("M")
-            
-            print(OneOrMore(integerK | integerM | integer).parseString("5K 100 640K 256M"))
-        prints::
-            [5120, 100, 655360, 268435456]
-        Equivalent form of C{expr.copy()} is just C{expr()}::
-            integerM = integer().addParseAction(lambda toks: toks[0]*1024*1024) + Suppress("M")
-        """
-        cpy = copy.copy( self )
-        cpy.parseAction = self.parseAction[:]
-        cpy.ignoreExprs = self.ignoreExprs[:]
-        if self.copyDefaultWhiteChars:
-            cpy.whiteChars = ParserElement.DEFAULT_WHITE_CHARS
-        return cpy
-
-    def setName( self, name ):
-        """
-        Define name for this expression, makes debugging and exception messages clearer.
-        
-        Example::
-            Word(nums).parseString("ABC")  # -> Exception: Expected W:(0123...) (at char 0), (line:1, col:1)
-            Word(nums).setName("integer").parseString("ABC")  # -> Exception: Expected integer (at char 0), (line:1, col:1)
-        """
-        self.name = name
-        self.errmsg = "Expected " + self.name
-        if hasattr(self,"exception"):
-            self.exception.msg = self.errmsg
-        return self
-
-    def setResultsName( self, name, listAllMatches=False ):
-        """
-        Define name for referencing matching tokens as a nested attribute
-        of the returned parse results.
-        NOTE: this returns a *copy* of the original C{ParserElement} object;
-        this is so that the client can define a basic element, such as an
-        integer, and reference it in multiple places with different names.
-
-        You can also set results names using the abbreviated syntax,
-        C{expr("name")} in place of C{expr.setResultsName("name")} - 
-        see L{I{__call__}<__call__>}.
-
-        Example::
-            date_str = (integer.setResultsName("year") + '/' 
-                        + integer.setResultsName("month") + '/' 
-                        + integer.setResultsName("day"))
-
-            # equivalent form:
-            date_str = integer("year") + '/' + integer("month") + '/' + integer("day")
-        """
-        newself = self.copy()
-        if name.endswith("*"):
-            name = name[:-1]
-            listAllMatches=True
-        newself.resultsName = name
-        newself.modalResults = not listAllMatches
-        return newself
-
-    def setBreak(self,breakFlag = True):
-        """Method to invoke the Python pdb debugger when this element is
-           about to be parsed. Set C{breakFlag} to True to enable, False to
-           disable.
-        """
-        if breakFlag:
-            _parseMethod = self._parse
-            def breaker(instring, loc, doActions=True, callPreParse=True):
-                import pdb
-                pdb.set_trace()
-                return _parseMethod( instring, loc, doActions, callPreParse )
-            breaker._originalParseMethod = _parseMethod
-            self._parse = breaker
-        else:
-            if hasattr(self._parse,"_originalParseMethod"):
-                self._parse = self._parse._originalParseMethod
-        return self
-
-    def setParseAction( self, *fns, **kwargs ):
-        """
-        Define one or more actions to perform when successfully matching parse element definition.
-        Parse action fn is a callable method with 0-3 arguments, called as C{fn(s,loc,toks)},
-        C{fn(loc,toks)}, C{fn(toks)}, or just C{fn()}, where:
-         - s   = the original string being parsed (see note below)
-         - loc = the location of the matching substring
-         - toks = a list of the matched tokens, packaged as a C{L{ParseResults}} object
-        If the functions in fns modify the tokens, they can return them as the return
-        value from fn, and the modified list of tokens will replace the original.
-        Otherwise, fn does not need to return any value.
-
-        Optional keyword arguments:
-         - callDuringTry = (default=C{False}) indicate if parse action should be run during lookaheads and alternate testing
-
-        Note: the default parsing behavior is to expand tabs in the input string
-        before starting the parsing process.  See L{I{parseString}<parseString>} for more information
-        on parsing strings containing C{<TAB>}s, and suggested methods to maintain a
-        consistent view of the parsed string, the parse location, and line and column
-        positions within the parsed string.
-        
-        Example::
-            integer = Word(nums)
-            date_str = integer + '/' + integer + '/' + integer
-
-            date_str.parseString("1999/12/31")  # -> ['1999', '/', '12', '/', '31']
-
-            # use parse action to convert to ints at parse time
-            integer = Word(nums).setParseAction(lambda toks: int(toks[0]))
-            date_str = integer + '/' + integer + '/' + integer
-
-            # note that integer fields are now ints, not strings
-            date_str.parseString("1999/12/31")  # -> [1999, '/', 12, '/', 31]
-        """
-        self.parseAction = list(map(_trim_arity, list(fns)))
-        self.callDuringTry = kwargs.get("callDuringTry", False)
-        return self
-
-    def addParseAction( self, *fns, **kwargs ):
-        """
-        Add one or more parse actions to expression's list of parse actions. See L{I{setParseAction}<setParseAction>}.
-        
-        See examples in L{I{copy}<copy>}.
-        """
-        self.parseAction += list(map(_trim_arity, list(fns)))
-        self.callDuringTry = self.callDuringTry or kwargs.get("callDuringTry", False)
-        return self
-
-    def addCondition(self, *fns, **kwargs):
-        """Add a boolean predicate function to expression's list of parse actions. See 
-        L{I{setParseAction}<setParseAction>} for function call signatures. Unlike C{setParseAction}, 
-        functions passed to C{addCondition} need to return boolean success/fail of the condition.
-
-        Optional keyword arguments:
-         - message = define a custom message to be used in the raised exception
-         - fatal   = if True, will raise ParseFatalException to stop parsing immediately; otherwise will raise ParseException
-         
-        Example::
-            integer = Word(nums).setParseAction(lambda toks: int(toks[0]))
-            year_int = integer.copy()
-            year_int.addCondition(lambda toks: toks[0] >= 2000, message="Only support years 2000 and later")
-            date_str = year_int + '/' + integer + '/' + integer
-
-            result = date_str.parseString("1999/12/31")  # -> Exception: Only support years 2000 and later (at char 0), (line:1, col:1)
-        """
-        msg = kwargs.get("message", "failed user-defined condition")
-        exc_type = ParseFatalException if kwargs.get("fatal", False) else ParseException
-        for fn in fns:
-            def pa(s,l,t):
-                if not bool(_trim_arity(fn)(s,l,t)):
-                    raise exc_type(s,l,msg)
-            self.parseAction.append(pa)
-        self.callDuringTry = self.callDuringTry or kwargs.get("callDuringTry", False)
-        return self
-
-    def setFailAction( self, fn ):
-        """Define action to perform if parsing fails at this expression.
-           Fail acton fn is a callable function that takes the arguments
-           C{fn(s,loc,expr,err)} where:
-            - s = string being parsed
-            - loc = location where expression match was attempted and failed
-            - expr = the parse expression that failed
-            - err = the exception thrown
-           The function returns no value.  It may throw C{L{ParseFatalException}}
-           if it is desired to stop parsing immediately."""
-        self.failAction = fn
-        return self
-
-    def _skipIgnorables( self, instring, loc ):
-        exprsFound = True
-        while exprsFound:
-            exprsFound = False
-            for e in self.ignoreExprs:
-                try:
-                    while 1:
-                        loc,dummy = e._parse( instring, loc )
-                        exprsFound = True
-                except ParseException:
-                    pass
-        return loc
-
-    def preParse( self, instring, loc ):
-        if self.ignoreExprs:
-            loc = self._skipIgnorables( instring, loc )
-
-        if self.skipWhitespace:
-            wt = self.whiteChars
-            instrlen = len(instring)
-            while loc < instrlen and instring[loc] in wt:
-                loc += 1
-
-        return loc
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        return loc, []
-
-    def postParse( self, instring, loc, tokenlist ):
-        return tokenlist
-
-    #~ @profile
-    def _parseNoCache( self, instring, loc, doActions=True, callPreParse=True ):
-        debugging = ( self.debug ) #and doActions )
-
-        if debugging or self.failAction:
-            #~ print ("Match",self,"at loc",loc,"(%d,%d)" % ( lineno(loc,instring), col(loc,instring) ))
-            if (self.debugActions[0] ):
-                self.debugActions[0]( instring, loc, self )
-            if callPreParse and self.callPreparse:
-                preloc = self.preParse( instring, loc )
-            else:
-                preloc = loc
-            tokensStart = preloc
-            try:
-                try:
-                    loc,tokens = self.parseImpl( instring, preloc, doActions )
-                except IndexError:
-                    raise ParseException( instring, len(instring), self.errmsg, self )
-            except ParseBaseException as err:
-                #~ print ("Exception raised:", err)
-                if self.debugActions[2]:
-                    self.debugActions[2]( instring, tokensStart, self, err )
-                if self.failAction:
-                    self.failAction( instring, tokensStart, self, err )
-                raise
-        else:
-            if callPreParse and self.callPreparse:
-                preloc = self.preParse( instring, loc )
-            else:
-                preloc = loc
-            tokensStart = preloc
-            if self.mayIndexError or preloc >= len(instring):
-                try:
-                    loc,tokens = self.parseImpl( instring, preloc, doActions )
-                except IndexError:
-                    raise ParseException( instring, len(instring), self.errmsg, self )
-            else:
-                loc,tokens = self.parseImpl( instring, preloc, doActions )
-
-        tokens = self.postParse( instring, loc, tokens )
-
-        retTokens = ParseResults( tokens, self.resultsName, asList=self.saveAsList, modal=self.modalResults )
-        if self.parseAction and (doActions or self.callDuringTry):
-            if debugging:
-                try:
-                    for fn in self.parseAction:
-                        tokens = fn( instring, tokensStart, retTokens )
-                        if tokens is not None:
-                            retTokens = ParseResults( tokens,
-                                                      self.resultsName,
-                                                      asList=self.saveAsList and isinstance(tokens,(ParseResults,list)),
-                                                      modal=self.modalResults )
-                except ParseBaseException as err:
-                    #~ print "Exception raised in user parse action:", err
-                    if (self.debugActions[2] ):
-                        self.debugActions[2]( instring, tokensStart, self, err )
-                    raise
-            else:
-                for fn in self.parseAction:
-                    tokens = fn( instring, tokensStart, retTokens )
-                    if tokens is not None:
-                        retTokens = ParseResults( tokens,
-                                                  self.resultsName,
-                                                  asList=self.saveAsList and isinstance(tokens,(ParseResults,list)),
-                                                  modal=self.modalResults )
-        if debugging:
-            #~ print ("Matched",self,"->",retTokens.asList())
-            if (self.debugActions[1] ):
-                self.debugActions[1]( instring, tokensStart, loc, self, retTokens )
-
-        return loc, retTokens
-
-    def tryParse( self, instring, loc ):
-        try:
-            return self._parse( instring, loc, doActions=False )[0]
-        except ParseFatalException:
-            raise ParseException( instring, loc, self.errmsg, self)
-    
-    def canParseNext(self, instring, loc):
-        try:
-            self.tryParse(instring, loc)
-        except (ParseException, IndexError):
-            return False
-        else:
-            return True
-
-    class _UnboundedCache(object):
-        def __init__(self):
-            cache = {}
-            self.not_in_cache = not_in_cache = object()
-
-            def get(self, key):
-                return cache.get(key, not_in_cache)
-
-            def set(self, key, value):
-                cache[key] = value
-
-            def clear(self):
-                cache.clear()
-                
-            def cache_len(self):
-                return len(cache)
-
-            self.get = types.MethodType(get, self)
-            self.set = types.MethodType(set, self)
-            self.clear = types.MethodType(clear, self)
-            self.__len__ = types.MethodType(cache_len, self)
-
-    if _OrderedDict is not None:
-        class _FifoCache(object):
-            def __init__(self, size):
-                self.not_in_cache = not_in_cache = object()
-
-                cache = _OrderedDict()
-
-                def get(self, key):
-                    return cache.get(key, not_in_cache)
-
-                def set(self, key, value):
-                    cache[key] = value
-                    while len(cache) > size:
-                        try:
-                            cache.popitem(False)
-                        except KeyError:
-                            pass
-
-                def clear(self):
-                    cache.clear()
-
-                def cache_len(self):
-                    return len(cache)
-
-                self.get = types.MethodType(get, self)
-                self.set = types.MethodType(set, self)
-                self.clear = types.MethodType(clear, self)
-                self.__len__ = types.MethodType(cache_len, self)
-
-    else:
-        class _FifoCache(object):
-            def __init__(self, size):
-                self.not_in_cache = not_in_cache = object()
-
-                cache = {}
-                key_fifo = collections.deque([], size)
-
-                def get(self, key):
-                    return cache.get(key, not_in_cache)
-
-                def set(self, key, value):
-                    cache[key] = value
-                    while len(key_fifo) > size:
-                        cache.pop(key_fifo.popleft(), None)
-                    key_fifo.append(key)
-
-                def clear(self):
-                    cache.clear()
-                    key_fifo.clear()
-
-                def cache_len(self):
-                    return len(cache)
-
-                self.get = types.MethodType(get, self)
-                self.set = types.MethodType(set, self)
-                self.clear = types.MethodType(clear, self)
-                self.__len__ = types.MethodType(cache_len, self)
-
-    # argument cache for optimizing repeated calls when backtracking through recursive expressions
-    packrat_cache = {} # this is set later by enabledPackrat(); this is here so that resetCache() doesn't fail
-    packrat_cache_lock = RLock()
-    packrat_cache_stats = [0, 0]
-
-    # this method gets repeatedly called during backtracking with the same arguments -
-    # we can cache these arguments and save ourselves the trouble of re-parsing the contained expression
-    def _parseCache( self, instring, loc, doActions=True, callPreParse=True ):
-        HIT, MISS = 0, 1
-        lookup = (self, instring, loc, callPreParse, doActions)
-        with ParserElement.packrat_cache_lock:
-            cache = ParserElement.packrat_cache
-            value = cache.get(lookup)
-            if value is cache.not_in_cache:
-                ParserElement.packrat_cache_stats[MISS] += 1
-                try:
-                    value = self._parseNoCache(instring, loc, doActions, callPreParse)
-                except ParseBaseException as pe:
-                    # cache a copy of the exception, without the traceback
-                    cache.set(lookup, pe.__class__(*pe.args))
-                    raise
-                else:
-                    cache.set(lookup, (value[0], value[1].copy()))
-                    return value
-            else:
-                ParserElement.packrat_cache_stats[HIT] += 1
-                if isinstance(value, Exception):
-                    raise value
-                return (value[0], value[1].copy())
-
-    _parse = _parseNoCache
-
-    @staticmethod
-    def resetCache():
-        ParserElement.packrat_cache.clear()
-        ParserElement.packrat_cache_stats[:] = [0] * len(ParserElement.packrat_cache_stats)
-
-    _packratEnabled = False
-    @staticmethod
-    def enablePackrat(cache_size_limit=128):
-        """Enables "packrat" parsing, which adds memoizing to the parsing logic.
-           Repeated parse attempts at the same string location (which happens
-           often in many complex grammars) can immediately return a cached value,
-           instead of re-executing parsing/validating code.  Memoizing is done of
-           both valid results and parsing exceptions.
-           
-           Parameters:
-            - cache_size_limit - (default=C{128}) - if an integer value is provided
-              will limit the size of the packrat cache; if None is passed, then
-              the cache size will be unbounded; if 0 is passed, the cache will
-              be effectively disabled.
-            
-           This speedup may break existing programs that use parse actions that
-           have side-effects.  For this reason, packrat parsing is disabled when
-           you first import pyparsing.  To activate the packrat feature, your
-           program must call the class method C{ParserElement.enablePackrat()}.  If
-           your program uses C{psyco} to "compile as you go", you must call
-           C{enablePackrat} before calling C{psyco.full()}.  If you do not do this,
-           Python will crash.  For best results, call C{enablePackrat()} immediately
-           after importing pyparsing.
-           
-           Example::
-               import pyparsing
-               pyparsing.ParserElement.enablePackrat()
-        """
-        if not ParserElement._packratEnabled:
-            ParserElement._packratEnabled = True
-            if cache_size_limit is None:
-                ParserElement.packrat_cache = ParserElement._UnboundedCache()
-            else:
-                ParserElement.packrat_cache = ParserElement._FifoCache(cache_size_limit)
-            ParserElement._parse = ParserElement._parseCache
-
-    def parseString( self, instring, parseAll=False ):
-        """
-        Execute the parse expression with the given string.
-        This is the main interface to the client code, once the complete
-        expression has been built.
-
-        If you want the grammar to require that the entire input string be
-        successfully parsed, then set C{parseAll} to True (equivalent to ending
-        the grammar with C{L{StringEnd()}}).
-
-        Note: C{parseString} implicitly calls C{expandtabs()} on the input string,
-        in order to report proper column numbers in parse actions.
-        If the input string contains tabs and
-        the grammar uses parse actions that use the C{loc} argument to index into the
-        string being parsed, you can ensure you have a consistent view of the input
-        string by:
-         - calling C{parseWithTabs} on your grammar before calling C{parseString}
-           (see L{I{parseWithTabs}<parseWithTabs>})
-         - define your parse action using the full C{(s,loc,toks)} signature, and
-           reference the input string using the parse action's C{s} argument
-         - explictly expand the tabs in your input string before calling
-           C{parseString}
-        
-        Example::
-            Word('a').parseString('aaaaabaaa')  # -> ['aaaaa']
-            Word('a').parseString('aaaaabaaa', parseAll=True)  # -> Exception: Expected end of text
-        """
-        ParserElement.resetCache()
-        if not self.streamlined:
-            self.streamline()
-            #~ self.saveAsList = True
-        for e in self.ignoreExprs:
-            e.streamline()
-        if not self.keepTabs:
-            instring = instring.expandtabs()
-        try:
-            loc, tokens = self._parse( instring, 0 )
-            if parseAll:
-                loc = self.preParse( instring, loc )
-                se = Empty() + StringEnd()
-                se._parse( instring, loc )
-        except ParseBaseException as exc:
-            if ParserElement.verbose_stacktrace:
-                raise
-            else:
-                # catch and re-raise exception from here, clears out pyparsing internal stack trace
-                raise exc
-        else:
-            return tokens
-
-    def scanString( self, instring, maxMatches=_MAX_INT, overlap=False ):
-        """
-        Scan the input string for expression matches.  Each match will return the
-        matching tokens, start location, and end location.  May be called with optional
-        C{maxMatches} argument, to clip scanning after 'n' matches are found.  If
-        C{overlap} is specified, then overlapping matches will be reported.
-
-        Note that the start and end locations are reported relative to the string
-        being parsed.  See L{I{parseString}<parseString>} for more information on parsing
-        strings with embedded tabs.
-
-        Example::
-            source = "sldjf123lsdjjkf345sldkjf879lkjsfd987"
-            print(source)
-            for tokens,start,end in Word(alphas).scanString(source):
-                print(' '*start + '^'*(end-start))
-                print(' '*start + tokens[0])
-        
-        prints::
-        
-            sldjf123lsdjjkf345sldkjf879lkjsfd987
-            ^^^^^
-            sldjf
-                    ^^^^^^^
-                    lsdjjkf
-                              ^^^^^^
-                              sldkjf
-                                       ^^^^^^
-                                       lkjsfd
-        """
-        if not self.streamlined:
-            self.streamline()
-        for e in self.ignoreExprs:
-            e.streamline()
-
-        if not self.keepTabs:
-            instring = _ustr(instring).expandtabs()
-        instrlen = len(instring)
-        loc = 0
-        preparseFn = self.preParse
-        parseFn = self._parse
-        ParserElement.resetCache()
-        matches = 0
-        try:
-            while loc <= instrlen and matches < maxMatches:
-                try:
-                    preloc = preparseFn( instring, loc )
-                    nextLoc,tokens = parseFn( instring, preloc, callPreParse=False )
-                except ParseException:
-                    loc = preloc+1
-                else:
-                    if nextLoc > loc:
-                        matches += 1
-                        yield tokens, preloc, nextLoc
-                        if overlap:
-                            nextloc = preparseFn( instring, loc )
-                            if nextloc > loc:
-                                loc = nextLoc
-                            else:
-                                loc += 1
-                        else:
-                            loc = nextLoc
-                    else:
-                        loc = preloc+1
-        except ParseBaseException as exc:
-            if ParserElement.verbose_stacktrace:
-                raise
-            else:
-                # catch and re-raise exception from here, clears out pyparsing internal stack trace
-                raise exc
-
-    def transformString( self, instring ):
-        """
-        Extension to C{L{scanString}}, to modify matching text with modified tokens that may
-        be returned from a parse action.  To use C{transformString}, define a grammar and
-        attach a parse action to it that modifies the returned token list.
-        Invoking C{transformString()} on a target string will then scan for matches,
-        and replace the matched text patterns according to the logic in the parse
-        action.  C{transformString()} returns the resulting transformed string.
-        
-        Example::
-            wd = Word(alphas)
-            wd.setParseAction(lambda toks: toks[0].title())
-            
-            print(wd.transformString("now is the winter of our discontent made glorious summer by this sun of york."))
-        Prints::
-            Now Is The Winter Of Our Discontent Made Glorious Summer By This Sun Of York.
-        """
-        out = []
-        lastE = 0
-        # force preservation of <TAB>s, to minimize unwanted transformation of string, and to
-        # keep string locs straight between transformString and scanString
-        self.keepTabs = True
-        try:
-            for t,s,e in self.scanString( instring ):
-                out.append( instring[lastE:s] )
-                if t:
-                    if isinstance(t,ParseResults):
-                        out += t.asList()
-                    elif isinstance(t,list):
-                        out += t
-                    else:
-                        out.append(t)
-                lastE = e
-            out.append(instring[lastE:])
-            out = [o for o in out if o]
-            return "".join(map(_ustr,_flatten(out)))
-        except ParseBaseException as exc:
-            if ParserElement.verbose_stacktrace:
-                raise
-            else:
-                # catch and re-raise exception from here, clears out pyparsing internal stack trace
-                raise exc
-
-    def searchString( self, instring, maxMatches=_MAX_INT ):
-        """
-        Another extension to C{L{scanString}}, simplifying the access to the tokens found
-        to match the given parse expression.  May be called with optional
-        C{maxMatches} argument, to clip searching after 'n' matches are found.
-        
-        Example::
-            # a capitalized word starts with an uppercase letter, followed by zero or more lowercase letters
-            cap_word = Word(alphas.upper(), alphas.lower())
-            
-            print(cap_word.searchString("More than Iron, more than Lead, more than Gold I need Electricity"))
-
-            # the sum() builtin can be used to merge results into a single ParseResults object
-            print(sum(cap_word.searchString("More than Iron, more than Lead, more than Gold I need Electricity")))
-        prints::
-            [['More'], ['Iron'], ['Lead'], ['Gold'], ['I'], ['Electricity']]
-            ['More', 'Iron', 'Lead', 'Gold', 'I', 'Electricity']
-        """
-        try:
-            return ParseResults([ t for t,s,e in self.scanString( instring, maxMatches ) ])
-        except ParseBaseException as exc:
-            if ParserElement.verbose_stacktrace:
-                raise
-            else:
-                # catch and re-raise exception from here, clears out pyparsing internal stack trace
-                raise exc
-
-    def split(self, instring, maxsplit=_MAX_INT, includeSeparators=False):
-        """
-        Generator method to split a string using the given expression as a separator.
-        May be called with optional C{maxsplit} argument, to limit the number of splits;
-        and the optional C{includeSeparators} argument (default=C{False}), if the separating
-        matching text should be included in the split results.
-        
-        Example::        
-            punc = oneOf(list(".,;:/-!?"))
-            print(list(punc.split("This, this?, this sentence, is badly punctuated!")))
-        prints::
-            ['This', ' this', '', ' this sentence', ' is badly punctuated', '']
-        """
-        splits = 0
-        last = 0
-        for t,s,e in self.scanString(instring, maxMatches=maxsplit):
-            yield instring[last:s]
-            if includeSeparators:
-                yield t[0]
-            last = e
-        yield instring[last:]
-
-    def __add__(self, other ):
-        """
-        Implementation of + operator - returns C{L{And}}. Adding strings to a ParserElement
-        converts them to L{Literal}s by default.
-        
-        Example::
-            greet = Word(alphas) + "," + Word(alphas) + "!"
-            hello = "Hello, World!"
-            print (hello, "->", greet.parseString(hello))
-        Prints::
-            Hello, World! -> ['Hello', ',', 'World', '!']
-        """
-        if isinstance( other, basestring ):
-            other = ParserElement._literalStringClass( other )
-        if not isinstance( other, ParserElement ):
-            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
-                    SyntaxWarning, stacklevel=2)
-            return None
-        return And( [ self, other ] )
-
-    def __radd__(self, other ):
-        """
-        Implementation of + operator when left operand is not a C{L{ParserElement}}
-        """
-        if isinstance( other, basestring ):
-            other = ParserElement._literalStringClass( other )
-        if not isinstance( other, ParserElement ):
-            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
-                    SyntaxWarning, stacklevel=2)
-            return None
-        return other + self
-
-    def __sub__(self, other):
-        """
-        Implementation of - operator, returns C{L{And}} with error stop
-        """
-        if isinstance( other, basestring ):
-            other = ParserElement._literalStringClass( other )
-        if not isinstance( other, ParserElement ):
-            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
-                    SyntaxWarning, stacklevel=2)
-            return None
-        return self + And._ErrorStop() + other
-
-    def __rsub__(self, other ):
-        """
-        Implementation of - operator when left operand is not a C{L{ParserElement}}
-        """
-        if isinstance( other, basestring ):
-            other = ParserElement._literalStringClass( other )
-        if not isinstance( other, ParserElement ):
-            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
-                    SyntaxWarning, stacklevel=2)
-            return None
-        return other - self
-
-    def __mul__(self,other):
-        """
-        Implementation of * operator, allows use of C{expr * 3} in place of
-        C{expr + expr + expr}.  Expressions may also me multiplied by a 2-integer
-        tuple, similar to C{{min,max}} multipliers in regular expressions.  Tuples
-        may also include C{None} as in:
-         - C{expr*(n,None)} or C{expr*(n,)} is equivalent
-              to C{expr*n + L{ZeroOrMore}(expr)}
-              (read as "at least n instances of C{expr}")
-         - C{expr*(None,n)} is equivalent to C{expr*(0,n)}
-              (read as "0 to n instances of C{expr}")
-         - C{expr*(None,None)} is equivalent to C{L{ZeroOrMore}(expr)}
-         - C{expr*(1,None)} is equivalent to C{L{OneOrMore}(expr)}
-
-        Note that C{expr*(None,n)} does not raise an exception if
-        more than n exprs exist in the input stream; that is,
-        C{expr*(None,n)} does not enforce a maximum number of expr
-        occurrences.  If this behavior is desired, then write
-        C{expr*(None,n) + ~expr}
-        """
-        if isinstance(other,int):
-            minElements, optElements = other,0
-        elif isinstance(other,tuple):
-            other = (other + (None, None))[:2]
-            if other[0] is None:
-                other = (0, other[1])
-            if isinstance(other[0],int) and other[1] is None:
-                if other[0] == 0:
-                    return ZeroOrMore(self)
-                if other[0] == 1:
-                    return OneOrMore(self)
-                else:
-                    return self*other[0] + ZeroOrMore(self)
-            elif isinstance(other[0],int) and isinstance(other[1],int):
-                minElements, optElements = other
-                optElements -= minElements
-            else:
-                raise TypeError("cannot multiply 'ParserElement' and ('%s','%s') objects", type(other[0]),type(other[1]))
-        else:
-            raise TypeError("cannot multiply 'ParserElement' and '%s' objects", type(other))
-
-        if minElements < 0:
-            raise ValueError("cannot multiply ParserElement by negative value")
-        if optElements < 0:
-            raise ValueError("second tuple value must be greater or equal to first tuple value")
-        if minElements == optElements == 0:
-            raise ValueError("cannot multiply ParserElement by 0 or (0,0)")
-
-        if (optElements):
-            def makeOptionalList(n):
-                if n>1:
-                    return Optional(self + makeOptionalList(n-1))
-                else:
-                    return Optional(self)
-            if minElements:
-                if minElements == 1:
-                    ret = self + makeOptionalList(optElements)
-                else:
-                    ret = And([self]*minElements) + makeOptionalList(optElements)
-            else:
-                ret = makeOptionalList(optElements)
-        else:
-            if minElements == 1:
-                ret = self
-            else:
-                ret = And([self]*minElements)
-        return ret
-
-    def __rmul__(self, other):
-        return self.__mul__(other)
-
-    def __or__(self, other ):
-        """
-        Implementation of | operator - returns C{L{MatchFirst}}
-        """
-        if isinstance( other, basestring ):
-            other = ParserElement._literalStringClass( other )
-        if not isinstance( other, ParserElement ):
-            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
-                    SyntaxWarning, stacklevel=2)
-            return None
-        return MatchFirst( [ self, other ] )
-
-    def __ror__(self, other ):
-        """
-        Implementation of | operator when left operand is not a C{L{ParserElement}}
-        """
-        if isinstance( other, basestring ):
-            other = ParserElement._literalStringClass( other )
-        if not isinstance( other, ParserElement ):
-            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
-                    SyntaxWarning, stacklevel=2)
-            return None
-        return other | self
-
-    def __xor__(self, other ):
-        """
-        Implementation of ^ operator - returns C{L{Or}}
-        """
-        if isinstance( other, basestring ):
-            other = ParserElement._literalStringClass( other )
-        if not isinstance( other, ParserElement ):
-            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
-                    SyntaxWarning, stacklevel=2)
-            return None
-        return Or( [ self, other ] )
-
-    def __rxor__(self, other ):
-        """
-        Implementation of ^ operator when left operand is not a C{L{ParserElement}}
-        """
-        if isinstance( other, basestring ):
-            other = ParserElement._literalStringClass( other )
-        if not isinstance( other, ParserElement ):
-            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
-                    SyntaxWarning, stacklevel=2)
-            return None
-        return other ^ self
-
-    def __and__(self, other ):
-        """
-        Implementation of & operator - returns C{L{Each}}
-        """
-        if isinstance( other, basestring ):
-            other = ParserElement._literalStringClass( other )
-        if not isinstance( other, ParserElement ):
-            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
-                    SyntaxWarning, stacklevel=2)
-            return None
-        return Each( [ self, other ] )
-
-    def __rand__(self, other ):
-        """
-        Implementation of & operator when left operand is not a C{L{ParserElement}}
-        """
-        if isinstance( other, basestring ):
-            other = ParserElement._literalStringClass( other )
-        if not isinstance( other, ParserElement ):
-            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
-                    SyntaxWarning, stacklevel=2)
-            return None
-        return other & self
-
-    def __invert__( self ):
-        """
-        Implementation of ~ operator - returns C{L{NotAny}}
-        """
-        return NotAny( self )
-
-    def __call__(self, name=None):
-        """
-        Shortcut for C{L{setResultsName}}, with C{listAllMatches=False}.
-        
-        If C{name} is given with a trailing C{'*'} character, then C{listAllMatches} will be
-        passed as C{True}.
-           
-        If C{name} is omitted, same as calling C{L{copy}}.
-
-        Example::
-            # these are equivalent
-            userdata = Word(alphas).setResultsName("name") + Word(nums+"-").setResultsName("socsecno")
-            userdata = Word(alphas)("name") + Word(nums+"-")("socsecno")             
-        """
-        if name is not None:
-            return self.setResultsName(name)
-        else:
-            return self.copy()
-
-    def suppress( self ):
-        """
-        Suppresses the output of this C{ParserElement}; useful to keep punctuation from
-        cluttering up returned output.
-        """
-        return Suppress( self )
-
-    def leaveWhitespace( self ):
-        """
-        Disables the skipping of whitespace before matching the characters in the
-        C{ParserElement}'s defined pattern.  This is normally only used internally by
-        the pyparsing module, but may be needed in some whitespace-sensitive grammars.
-        """
-        self.skipWhitespace = False
-        return self
-
-    def setWhitespaceChars( self, chars ):
-        """
-        Overrides the default whitespace chars
-        """
-        self.skipWhitespace = True
-        self.whiteChars = chars
-        self.copyDefaultWhiteChars = False
-        return self
-
-    def parseWithTabs( self ):
-        """
-        Overrides default behavior to expand C{<TAB>}s to spaces before parsing the input string.
-        Must be called before C{parseString} when the input grammar contains elements that
-        match C{<TAB>} characters.
-        """
-        self.keepTabs = True
-        return self
-
-    def ignore( self, other ):
-        """
-        Define expression to be ignored (e.g., comments) while doing pattern
-        matching; may be called repeatedly, to define multiple comment or other
-        ignorable patterns.
-        
-        Example::
-            patt = OneOrMore(Word(alphas))
-            patt.parseString('ablaj /* comment */ lskjd') # -> ['ablaj']
-            
-            patt.ignore(cStyleComment)
-            patt.parseString('ablaj /* comment */ lskjd') # -> ['ablaj', 'lskjd']
-        """
-        if isinstance(other, basestring):
-            other = Suppress(other)
-
-        if isinstance( other, Suppress ):
-            if other not in self.ignoreExprs:
-                self.ignoreExprs.append(other)
-        else:
-            self.ignoreExprs.append( Suppress( other.copy() ) )
-        return self
-
-    def setDebugActions( self, startAction, successAction, exceptionAction ):
-        """
-        Enable display of debugging messages while doing pattern matching.
-        """
-        self.debugActions = (startAction or _defaultStartDebugAction,
-                             successAction or _defaultSuccessDebugAction,
-                             exceptionAction or _defaultExceptionDebugAction)
-        self.debug = True
-        return self
-
-    def setDebug( self, flag=True ):
-        """
-        Enable display of debugging messages while doing pattern matching.
-        Set C{flag} to True to enable, False to disable.
-
-        Example::
-            wd = Word(alphas).setName("alphaword")
-            integer = Word(nums).setName("numword")
-            term = wd | integer
-            
-            # turn on debugging for wd
-            wd.setDebug()
-
-            OneOrMore(term).parseString("abc 123 xyz 890")
-        
-        prints::
-            Match alphaword at loc 0(1,1)
-            Matched alphaword -> ['abc']
-            Match alphaword at loc 3(1,4)
-            Exception raised:Expected alphaword (at char 4), (line:1, col:5)
-            Match alphaword at loc 7(1,8)
-            Matched alphaword -> ['xyz']
-            Match alphaword at loc 11(1,12)
-            Exception raised:Expected alphaword (at char 12), (line:1, col:13)
-            Match alphaword at loc 15(1,16)
-            Exception raised:Expected alphaword (at char 15), (line:1, col:16)
-
-        The output shown is that produced by the default debug actions - custom debug actions can be
-        specified using L{setDebugActions}. Prior to attempting
-        to match the C{wd} expression, the debugging message C{"Match <exprname> at loc <n>(<line>,<col>)"}
-        is shown. Then if the parse succeeds, a C{"Matched"} message is shown, or an C{"Exception raised"}
-        message is shown. Also note the use of L{setName} to assign a human-readable name to the expression,
-        which makes debugging and exception messages easier to understand - for instance, the default
-        name created for the C{Word} expression without calling C{setName} is C{"W:(ABCD...)"}.
-        """
-        if flag:
-            self.setDebugActions( _defaultStartDebugAction, _defaultSuccessDebugAction, _defaultExceptionDebugAction )
-        else:
-            self.debug = False
-        return self
-
-    def __str__( self ):
-        return self.name
-
-    def __repr__( self ):
-        return _ustr(self)
-
-    def streamline( self ):
-        self.streamlined = True
-        self.strRepr = None
-        return self
-
-    def checkRecursion( self, parseElementList ):
-        pass
-
-    def validate( self, validateTrace=[] ):
-        """
-        Check defined expressions for valid structure, check for infinite recursive definitions.
-        """
-        self.checkRecursion( [] )
-
-    def parseFile( self, file_or_filename, parseAll=False ):
-        """
-        Execute the parse expression on the given file or filename.
-        If a filename is specified (instead of a file object),
-        the entire file is opened, read, and closed before parsing.
-        """
-        try:
-            file_contents = file_or_filename.read()
-        except AttributeError:
-            with open(file_or_filename, "r") as f:
-                file_contents = f.read()
-        try:
-            return self.parseString(file_contents, parseAll)
-        except ParseBaseException as exc:
-            if ParserElement.verbose_stacktrace:
-                raise
-            else:
-                # catch and re-raise exception from here, clears out pyparsing internal stack trace
-                raise exc
-
-    def __eq__(self,other):
-        if isinstance(other, ParserElement):
-            return self is other or vars(self) == vars(other)
-        elif isinstance(other, basestring):
-            return self.matches(other)
-        else:
-            return super(ParserElement,self)==other
-
-    def __ne__(self,other):
-        return not (self == other)
-
-    def __hash__(self):
-        return hash(id(self))
-
-    def __req__(self,other):
-        return self == other
-
-    def __rne__(self,other):
-        return not (self == other)
-
-    def matches(self, testString, parseAll=True):
-        """
-        Method for quick testing of a parser against a test string. Good for simple 
-        inline microtests of sub expressions while building up larger parser.
-           
-        Parameters:
-         - testString - to test against this expression for a match
-         - parseAll - (default=C{True}) - flag to pass to C{L{parseString}} when running tests
-            
-        Example::
-            expr = Word(nums)
-            assert expr.matches("100")
-        """
-        try:
-            self.parseString(_ustr(testString), parseAll=parseAll)
-            return True
-        except ParseBaseException:
-            return False
-                
-    def runTests(self, tests, parseAll=True, comment='#', fullDump=True, printResults=True, failureTests=False):
-        """
-        Execute the parse expression on a series of test strings, showing each
-        test, the parsed results or where the parse failed. Quick and easy way to
-        run a parse expression against a list of sample strings.
-           
-        Parameters:
-         - tests - a list of separate test strings, or a multiline string of test strings
-         - parseAll - (default=C{True}) - flag to pass to C{L{parseString}} when running tests           
-         - comment - (default=C{'#'}) - expression for indicating embedded comments in the test 
-              string; pass None to disable comment filtering
-         - fullDump - (default=C{True}) - dump results as list followed by results names in nested outline;
-              if False, only dump nested list
-         - printResults - (default=C{True}) prints test output to stdout
-         - failureTests - (default=C{False}) indicates if these tests are expected to fail parsing
-
-        Returns: a (success, results) tuple, where success indicates that all tests succeeded
-        (or failed if C{failureTests} is True), and the results contain a list of lines of each 
-        test's output
-        
-        Example::
-            number_expr = pyparsing_common.number.copy()
-
-            result = number_expr.runTests('''
-                # unsigned integer
-                100
-                # negative integer
-                -100
-                # float with scientific notation
-                6.02e23
-                # integer with scientific notation
-                1e-12
-                ''')
-            print("Success" if result[0] else "Failed!")
-
-            result = number_expr.runTests('''
-                # stray character
-                100Z
-                # missing leading digit before '.'
-                -.100
-                # too many '.'
-                3.14.159
-                ''', failureTests=True)
-            print("Success" if result[0] else "Failed!")
-        prints::
-            # unsigned integer
-            100
-            [100]
-
-            # negative integer
-            -100
-            [-100]
-
-            # float with scientific notation
-            6.02e23
-            [6.02e+23]
-
-            # integer with scientific notation
-            1e-12
-            [1e-12]
-
-            Success
-            
-            # stray character
-            100Z
-               ^
-            FAIL: Expected end of text (at char 3), (line:1, col:4)
-
-            # missing leading digit before '.'
-            -.100
-            ^
-            FAIL: Expected {real number with scientific notation | real number | signed integer} (at char 0), (line:1, col:1)
-
-            # too many '.'
-            3.14.159
-                ^
-            FAIL: Expected end of text (at char 4), (line:1, col:5)
-
-            Success
-
-        Each test string must be on a single line. If you want to test a string that spans multiple
-        lines, create a test like this::
-
-            expr.runTest(r"this is a test\\n of strings that spans \\n 3 lines")
-        
-        (Note that this is a raw string literal, you must include the leading 'r'.)
-        """
-        if isinstance(tests, basestring):
-            tests = list(map(str.strip, tests.rstrip().splitlines()))
-        if isinstance(comment, basestring):
-            comment = Literal(comment)
-        allResults = []
-        comments = []
-        success = True
-        for t in tests:
-            if comment is not None and comment.matches(t, False) or comments and not t:
-                comments.append(t)
-                continue
-            if not t:
-                continue
-            out = ['\n'.join(comments), t]
-            comments = []
-            try:
-                t = t.replace(r'\n','\n')
-                result = self.parseString(t, parseAll=parseAll)
-                out.append(result.dump(full=fullDump))
-                success = success and not failureTests
-            except ParseBaseException as pe:
-                fatal = "(FATAL)" if isinstance(pe, ParseFatalException) else ""
-                if '\n' in t:
-                    out.append(line(pe.loc, t))
-                    out.append(' '*(col(pe.loc,t)-1) + '^' + fatal)
-                else:
-                    out.append(' '*pe.loc + '^' + fatal)
-                out.append("FAIL: " + str(pe))
-                success = success and failureTests
-                result = pe
-            except Exception as exc:
-                out.append("FAIL-EXCEPTION: " + str(exc))
-                success = success and failureTests
-                result = exc
-
-            if printResults:
-                if fullDump:
-                    out.append('')
-                print('\n'.join(out))
-
-            allResults.append((t, result))
-        
-        return success, allResults
-
-        
-class Token(ParserElement):
-    """
-    Abstract C{ParserElement} subclass, for defining atomic matching patterns.
-    """
-    def __init__( self ):
-        super(Token,self).__init__( savelist=False )
-
-
-class Empty(Token):
-    """
-    An empty token, will always match.
-    """
-    def __init__( self ):
-        super(Empty,self).__init__()
-        self.name = "Empty"
-        self.mayReturnEmpty = True
-        self.mayIndexError = False
-
-
-class NoMatch(Token):
-    """
-    A token that will never match.
-    """
-    def __init__( self ):
-        super(NoMatch,self).__init__()
-        self.name = "NoMatch"
-        self.mayReturnEmpty = True
-        self.mayIndexError = False
-        self.errmsg = "Unmatchable token"
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        raise ParseException(instring, loc, self.errmsg, self)
-
-
-class Literal(Token):
-    """
-    Token to exactly match a specified string.
-    
-    Example::
-        Literal('blah').parseString('blah')  # -> ['blah']
-        Literal('blah').parseString('blahfooblah')  # -> ['blah']
-        Literal('blah').parseString('bla')  # -> Exception: Expected "blah"
-    
-    For case-insensitive matching, use L{CaselessLiteral}.
-    
-    For keyword matching (force word break before and after the matched string),
-    use L{Keyword} or L{CaselessKeyword}.
-    """
-    def __init__( self, matchString ):
-        super(Literal,self).__init__()
-        self.match = matchString
-        self.matchLen = len(matchString)
-        try:
-            self.firstMatchChar = matchString[0]
-        except IndexError:
-            warnings.warn("null string passed to Literal; use Empty() instead",
-                            SyntaxWarning, stacklevel=2)
-            self.__class__ = Empty
-        self.name = '"%s"' % _ustr(self.match)
-        self.errmsg = "Expected " + self.name
-        self.mayReturnEmpty = False
-        self.mayIndexError = False
-
-    # Performance tuning: this routine gets called a *lot*
-    # if this is a single character match string  and the first character matches,
-    # short-circuit as quickly as possible, and avoid calling startswith
-    #~ @profile
-    def parseImpl( self, instring, loc, doActions=True ):
-        if (instring[loc] == self.firstMatchChar and
-            (self.matchLen==1 or instring.startswith(self.match,loc)) ):
-            return loc+self.matchLen, self.match
-        raise ParseException(instring, loc, self.errmsg, self)
-_L = Literal
-ParserElement._literalStringClass = Literal
-
-class Keyword(Token):
-    """
-    Token to exactly match a specified string as a keyword, that is, it must be
-    immediately followed by a non-keyword character.  Compare with C{L{Literal}}:
-     - C{Literal("if")} will match the leading C{'if'} in C{'ifAndOnlyIf'}.
-     - C{Keyword("if")} will not; it will only match the leading C{'if'} in C{'if x=1'}, or C{'if(y==2)'}
-    Accepts two optional constructor arguments in addition to the keyword string:
-     - C{identChars} is a string of characters that would be valid identifier characters,
-          defaulting to all alphanumerics + "_" and "$"
-     - C{caseless} allows case-insensitive matching, default is C{False}.
-       
-    Example::
-        Keyword("start").parseString("start")  # -> ['start']
-        Keyword("start").parseString("starting")  # -> Exception
-
-    For case-insensitive matching, use L{CaselessKeyword}.
-    """
-    DEFAULT_KEYWORD_CHARS = alphanums+"_$"
-
-    def __init__( self, matchString, identChars=None, caseless=False ):
-        super(Keyword,self).__init__()
-        if identChars is None:
-            identChars = Keyword.DEFAULT_KEYWORD_CHARS
-        self.match = matchString
-        self.matchLen = len(matchString)
-        try:
-            self.firstMatchChar = matchString[0]
-        except IndexError:
-            warnings.warn("null string passed to Keyword; use Empty() instead",
-                            SyntaxWarning, stacklevel=2)
-        self.name = '"%s"' % self.match
-        self.errmsg = "Expected " + self.name
-        self.mayReturnEmpty = False
-        self.mayIndexError = False
-        self.caseless = caseless
-        if caseless:
-            self.caselessmatch = matchString.upper()
-            identChars = identChars.upper()
-        self.identChars = set(identChars)
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        if self.caseless:
-            if ( (instring[ loc:loc+self.matchLen ].upper() == self.caselessmatch) and
-                 (loc >= len(instring)-self.matchLen or instring[loc+self.matchLen].upper() not in self.identChars) and
-                 (loc == 0 or instring[loc-1].upper() not in self.identChars) ):
-                return loc+self.matchLen, self.match
-        else:
-            if (instring[loc] == self.firstMatchChar and
-                (self.matchLen==1 or instring.startswith(self.match,loc)) and
-                (loc >= len(instring)-self.matchLen or instring[loc+self.matchLen] not in self.identChars) and
-                (loc == 0 or instring[loc-1] not in self.identChars) ):
-                return loc+self.matchLen, self.match
-        raise ParseException(instring, loc, self.errmsg, self)
-
-    def copy(self):
-        c = super(Keyword,self).copy()
-        c.identChars = Keyword.DEFAULT_KEYWORD_CHARS
-        return c
-
-    @staticmethod
-    def setDefaultKeywordChars( chars ):
-        """Overrides the default Keyword chars
-        """
-        Keyword.DEFAULT_KEYWORD_CHARS = chars
-
-class CaselessLiteral(Literal):
-    """
-    Token to match a specified string, ignoring case of letters.
-    Note: the matched results will always be in the case of the given
-    match string, NOT the case of the input text.
-
-    Example::
-        OneOrMore(CaselessLiteral("CMD")).parseString("cmd CMD Cmd10") # -> ['CMD', 'CMD', 'CMD']
-        
-    (Contrast with example for L{CaselessKeyword}.)
-    """
-    def __init__( self, matchString ):
-        super(CaselessLiteral,self).__init__( matchString.upper() )
-        # Preserve the defining literal.
-        self.returnString = matchString
-        self.name = "'%s'" % self.returnString
-        self.errmsg = "Expected " + self.name
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        if instring[ loc:loc+self.matchLen ].upper() == self.match:
-            return loc+self.matchLen, self.returnString
-        raise ParseException(instring, loc, self.errmsg, self)
-
-class CaselessKeyword(Keyword):
-    """
-    Caseless version of L{Keyword}.
-
-    Example::
-        OneOrMore(CaselessKeyword("CMD")).parseString("cmd CMD Cmd10") # -> ['CMD', 'CMD']
-        
-    (Contrast with example for L{CaselessLiteral}.)
-    """
-    def __init__( self, matchString, identChars=None ):
-        super(CaselessKeyword,self).__init__( matchString, identChars, caseless=True )
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        if ( (instring[ loc:loc+self.matchLen ].upper() == self.caselessmatch) and
-             (loc >= len(instring)-self.matchLen or instring[loc+self.matchLen].upper() not in self.identChars) ):
-            return loc+self.matchLen, self.match
-        raise ParseException(instring, loc, self.errmsg, self)
-
-class CloseMatch(Token):
-    """
-    A variation on L{Literal} which matches "close" matches, that is, 
-    strings with at most 'n' mismatching characters. C{CloseMatch} takes parameters:
-     - C{match_string} - string to be matched
-     - C{maxMismatches} - (C{default=1}) maximum number of mismatches allowed to count as a match
-    
-    The results from a successful parse will contain the matched text from the input string and the following named results:
-     - C{mismatches} - a list of the positions within the match_string where mismatches were found
-     - C{original} - the original match_string used to compare against the input string
-    
-    If C{mismatches} is an empty list, then the match was an exact match.
-    
-    Example::
-        patt = CloseMatch("ATCATCGAATGGA")
-        patt.parseString("ATCATCGAAXGGA") # -> (['ATCATCGAAXGGA'], {'mismatches': [[9]], 'original': ['ATCATCGAATGGA']})
-        patt.parseString("ATCAXCGAAXGGA") # -> Exception: Expected 'ATCATCGAATGGA' (with up to 1 mismatches) (at char 0), (line:1, col:1)
-
-        # exact match
-        patt.parseString("ATCATCGAATGGA") # -> (['ATCATCGAATGGA'], {'mismatches': [[]], 'original': ['ATCATCGAATGGA']})
-
-        # close match allowing up to 2 mismatches
-        patt = CloseMatch("ATCATCGAATGGA", maxMismatches=2)
-        patt.parseString("ATCAXCGAAXGGA") # -> (['ATCAXCGAAXGGA'], {'mismatches': [[4, 9]], 'original': ['ATCATCGAATGGA']})
-    """
-    def __init__(self, match_string, maxMismatches=1):
-        super(CloseMatch,self).__init__()
-        self.name = match_string
-        self.match_string = match_string
-        self.maxMismatches = maxMismatches
-        self.errmsg = "Expected %r (with up to %d mismatches)" % (self.match_string, self.maxMismatches)
-        self.mayIndexError = False
-        self.mayReturnEmpty = False
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        start = loc
-        instrlen = len(instring)
-        maxloc = start + len(self.match_string)
-
-        if maxloc <= instrlen:
-            match_string = self.match_string
-            match_stringloc = 0
-            mismatches = []
-            maxMismatches = self.maxMismatches
-
-            for match_stringloc,s_m in enumerate(zip(instring[loc:maxloc], self.match_string)):
-                src,mat = s_m
-                if src != mat:
-                    mismatches.append(match_stringloc)
-                    if len(mismatches) > maxMismatches:
-                        break
-            else:
-                loc = match_stringloc + 1
-                results = ParseResults([instring[start:loc]])
-                results['original'] = self.match_string
-                results['mismatches'] = mismatches
-                return loc, results
-
-        raise ParseException(instring, loc, self.errmsg, self)
-
-
-class Word(Token):
-    """
-    Token for matching words composed of allowed character sets.
-    Defined with string containing all allowed initial characters,
-    an optional string containing allowed body characters (if omitted,
-    defaults to the initial character set), and an optional minimum,
-    maximum, and/or exact length.  The default value for C{min} is 1 (a
-    minimum value < 1 is not valid); the default values for C{max} and C{exact}
-    are 0, meaning no maximum or exact length restriction. An optional
-    C{excludeChars} parameter can list characters that might be found in 
-    the input C{bodyChars} string; useful to define a word of all printables
-    except for one or two characters, for instance.
-    
-    L{srange} is useful for defining custom character set strings for defining 
-    C{Word} expressions, using range notation from regular expression character sets.
-    
-    A common mistake is to use C{Word} to match a specific literal string, as in 
-    C{Word("Address")}. Remember that C{Word} uses the string argument to define
-    I{sets} of matchable characters. This expression would match "Add", "AAA",
-    "dAred", or any other word made up of the characters 'A', 'd', 'r', 'e', and 's'.
-    To match an exact literal string, use L{Literal} or L{Keyword}.
-
-    pyparsing includes helper strings for building Words:
-     - L{alphas}
-     - L{nums}
-     - L{alphanums}
-     - L{hexnums}
-     - L{alphas8bit} (alphabetic characters in ASCII range 128-255 - accented, tilded, umlauted, etc.)
-     - L{punc8bit} (non-alphabetic characters in ASCII range 128-255 - currency, symbols, superscripts, diacriticals, etc.)
-     - L{printables} (any non-whitespace character)
-
-    Example::
-        # a word composed of digits
-        integer = Word(nums) # equivalent to Word("0123456789") or Word(srange("0-9"))
-        
-        # a word with a leading capital, and zero or more lowercase
-        capital_word = Word(alphas.upper(), alphas.lower())
-
-        # hostnames are alphanumeric, with leading alpha, and '-'
-        hostname = Word(alphas, alphanums+'-')
-        
-        # roman numeral (not a strict parser, accepts invalid mix of characters)
-        roman = Word("IVXLCDM")
-        
-        # any string of non-whitespace characters, except for ','
-        csv_value = Word(printables, excludeChars=",")
-    """
-    def __init__( self, initChars, bodyChars=None, min=1, max=0, exact=0, asKeyword=False, excludeChars=None ):
-        super(Word,self).__init__()
-        if excludeChars:
-            initChars = ''.join(c for c in initChars if c not in excludeChars)
-            if bodyChars:
-                bodyChars = ''.join(c for c in bodyChars if c not in excludeChars)
-        self.initCharsOrig = initChars
-        self.initChars = set(initChars)
-        if bodyChars :
-            self.bodyCharsOrig = bodyChars
-            self.bodyChars = set(bodyChars)
-        else:
-            self.bodyCharsOrig = initChars
-            self.bodyChars = set(initChars)
-
-        self.maxSpecified = max > 0
-
-        if min < 1:
-            raise ValueError("cannot specify a minimum length < 1; use Optional(Word()) if zero-length word is permitted")
-
-        self.minLen = min
-
-        if max > 0:
-            self.maxLen = max
-        else:
-            self.maxLen = _MAX_INT
-
-        if exact > 0:
-            self.maxLen = exact
-            self.minLen = exact
-
-        self.name = _ustr(self)
-        self.errmsg = "Expected " + self.name
-        self.mayIndexError = False
-        self.asKeyword = asKeyword
-
-        if ' ' not in self.initCharsOrig+self.bodyCharsOrig and (min==1 and max==0 and exact==0):
-            if self.bodyCharsOrig == self.initCharsOrig:
-                self.reString = "[%s]+" % _escapeRegexRangeChars(self.initCharsOrig)
-            elif len(self.initCharsOrig) == 1:
-                self.reString = "%s[%s]*" % \
-                                      (re.escape(self.initCharsOrig),
-                                      _escapeRegexRangeChars(self.bodyCharsOrig),)
-            else:
-                self.reString = "[%s][%s]*" % \
-                                      (_escapeRegexRangeChars(self.initCharsOrig),
-                                      _escapeRegexRangeChars(self.bodyCharsOrig),)
-            if self.asKeyword:
-                self.reString = r"\b"+self.reString+r"\b"
-            try:
-                self.re = re.compile( self.reString )
-            except Exception:
-                self.re = None
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        if self.re:
-            result = self.re.match(instring,loc)
-            if not result:
-                raise ParseException(instring, loc, self.errmsg, self)
-
-            loc = result.end()
-            return loc, result.group()
-
-        if not(instring[ loc ] in self.initChars):
-            raise ParseException(instring, loc, self.errmsg, self)
-
-        start = loc
-        loc += 1
-        instrlen = len(instring)
-        bodychars = self.bodyChars
-        maxloc = start + self.maxLen
-        maxloc = min( maxloc, instrlen )
-        while loc < maxloc and instring[loc] in bodychars:
-            loc += 1
-
-        throwException = False
-        if loc - start < self.minLen:
-            throwException = True
-        if self.maxSpecified and loc < instrlen and instring[loc] in bodychars:
-            throwException = True
-        if self.asKeyword:
-            if (start>0 and instring[start-1] in bodychars) or (loc<instrlen and instring[loc] in bodychars):
-                throwException = True
-
-        if throwException:
-            raise ParseException(instring, loc, self.errmsg, self)
-
-        return loc, instring[start:loc]
-
-    def __str__( self ):
-        try:
-            return super(Word,self).__str__()
-        except Exception:
-            pass
-
-
-        if self.strRepr is None:
-
-            def charsAsStr(s):
-                if len(s)>4:
-                    return s[:4]+"..."
-                else:
-                    return s
-
-            if ( self.initCharsOrig != self.bodyCharsOrig ):
-                self.strRepr = "W:(%s,%s)" % ( charsAsStr(self.initCharsOrig), charsAsStr(self.bodyCharsOrig) )
-            else:
-                self.strRepr = "W:(%s)" % charsAsStr(self.initCharsOrig)
-
-        return self.strRepr
-
-
-class Regex(Token):
-    r"""
-    Token for matching strings that match a given regular expression.
-    Defined with string specifying the regular expression in a form recognized by the inbuilt Python re module.
-    If the given regex contains named groups (defined using C{(?P<name>...)}), these will be preserved as 
-    named parse results.
-
-    Example::
-        realnum = Regex(r"[+-]?\d+\.\d*")
-        date = Regex(r'(?P<year>\d{4})-(?P<month>\d\d?)-(?P<day>\d\d?)')
-        # ref: http://stackoverflow.com/questions/267399/how-do-you-match-only-valid-roman-numerals-with-a-regular-expression
-        roman = Regex(r"M{0,4}(CM|CD|D?C{0,3})(XC|XL|L?X{0,3})(IX|IV|V?I{0,3})")
-    """
-    compiledREtype = type(re.compile("[A-Z]"))
-    def __init__( self, pattern, flags=0):
-        """The parameters C{pattern} and C{flags} are passed to the C{re.compile()} function as-is. See the Python C{re} module for an explanation of the acceptable patterns and flags."""
-        super(Regex,self).__init__()
-
-        if isinstance(pattern, basestring):
-            if not pattern:
-                warnings.warn("null string passed to Regex; use Empty() instead",
-                        SyntaxWarning, stacklevel=2)
-
-            self.pattern = pattern
-            self.flags = flags
-
-            try:
-                self.re = re.compile(self.pattern, self.flags)
-                self.reString = self.pattern
-            except sre_constants.error:
-                warnings.warn("invalid pattern (%s) passed to Regex" % pattern,
-                    SyntaxWarning, stacklevel=2)
-                raise
-
-        elif isinstance(pattern, Regex.compiledREtype):
-            self.re = pattern
-            self.pattern = \
-            self.reString = str(pattern)
-            self.flags = flags
-            
-        else:
-            raise ValueError("Regex may only be constructed with a string or a compiled RE object")
-
-        self.name = _ustr(self)
-        self.errmsg = "Expected " + self.name
-        self.mayIndexError = False
-        self.mayReturnEmpty = True
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        result = self.re.match(instring,loc)
-        if not result:
-            raise ParseException(instring, loc, self.errmsg, self)
-
-        loc = result.end()
-        d = result.groupdict()
-        ret = ParseResults(result.group())
-        if d:
-            for k in d:
-                ret[k] = d[k]
-        return loc,ret
-
-    def __str__( self ):
-        try:
-            return super(Regex,self).__str__()
-        except Exception:
-            pass
-
-        if self.strRepr is None:
-            self.strRepr = "Re:(%s)" % repr(self.pattern)
-
-        return self.strRepr
-
-
-class QuotedString(Token):
-    r"""
-    Token for matching strings that are delimited by quoting characters.
-    
-    Defined with the following parameters:
-        - quoteChar - string of one or more characters defining the quote delimiting string
-        - escChar - character to escape quotes, typically backslash (default=C{None})
-        - escQuote - special quote sequence to escape an embedded quote string (such as SQL's "" to escape an embedded ") (default=C{None})
-        - multiline - boolean indicating whether quotes can span multiple lines (default=C{False})
-        - unquoteResults - boolean indicating whether the matched text should be unquoted (default=C{True})
-        - endQuoteChar - string of one or more characters defining the end of the quote delimited string (default=C{None} => same as quoteChar)
-        - convertWhitespaceEscapes - convert escaped whitespace (C{'\t'}, C{'\n'}, etc.) to actual whitespace (default=C{True})
-
-    Example::
-        qs = QuotedString('"')
-        print(qs.searchString('lsjdf "This is the quote" sldjf'))
-        complex_qs = QuotedString('{{', endQuoteChar='}}')
-        print(complex_qs.searchString('lsjdf {{This is the "quote"}} sldjf'))
-        sql_qs = QuotedString('"', escQuote='""')
-        print(sql_qs.searchString('lsjdf "This is the quote with ""embedded"" quotes" sldjf'))
-    prints::
-        [['This is the quote']]
-        [['This is the "quote"']]
-        [['This is the quote with "embedded" quotes']]
-    """
-    def __init__( self, quoteChar, escChar=None, escQuote=None, multiline=False, unquoteResults=True, endQuoteChar=None, convertWhitespaceEscapes=True):
-        super(QuotedString,self).__init__()
-
-        # remove white space from quote chars - wont work anyway
-        quoteChar = quoteChar.strip()
-        if not quoteChar:
-            warnings.warn("quoteChar cannot be the empty string",SyntaxWarning,stacklevel=2)
-            raise SyntaxError()
-
-        if endQuoteChar is None:
-            endQuoteChar = quoteChar
-        else:
-            endQuoteChar = endQuoteChar.strip()
-            if not endQuoteChar:
-                warnings.warn("endQuoteChar cannot be the empty string",SyntaxWarning,stacklevel=2)
-                raise SyntaxError()
-
-        self.quoteChar = quoteChar
-        self.quoteCharLen = len(quoteChar)
-        self.firstQuoteChar = quoteChar[0]
-        self.endQuoteChar = endQuoteChar
-        self.endQuoteCharLen = len(endQuoteChar)
-        self.escChar = escChar
-        self.escQuote = escQuote
-        self.unquoteResults = unquoteResults
-        self.convertWhitespaceEscapes = convertWhitespaceEscapes
-
-        if multiline:
-            self.flags = re.MULTILINE | re.DOTALL
-            self.pattern = r'%s(?:[^%s%s]' % \
-                ( re.escape(self.quoteChar),
-                  _escapeRegexRangeChars(self.endQuoteChar[0]),
-                  (escChar is not None and _escapeRegexRangeChars(escChar) or '') )
-        else:
-            self.flags = 0
-            self.pattern = r'%s(?:[^%s\n\r%s]' % \
-                ( re.escape(self.quoteChar),
-                  _escapeRegexRangeChars(self.endQuoteChar[0]),
-                  (escChar is not None and _escapeRegexRangeChars(escChar) or '') )
-        if len(self.endQuoteChar) > 1:
-            self.pattern += (
-                '|(?:' + ')|(?:'.join("%s[^%s]" % (re.escape(self.endQuoteChar[:i]),
-                                               _escapeRegexRangeChars(self.endQuoteChar[i]))
-                                    for i in range(len(self.endQuoteChar)-1,0,-1)) + ')'
-                )
-        if escQuote:
-            self.pattern += (r'|(?:%s)' % re.escape(escQuote))
-        if escChar:
-            self.pattern += (r'|(?:%s.)' % re.escape(escChar))
-            self.escCharReplacePattern = re.escape(self.escChar)+"(.)"
-        self.pattern += (r')*%s' % re.escape(self.endQuoteChar))
-
-        try:
-            self.re = re.compile(self.pattern, self.flags)
-            self.reString = self.pattern
-        except sre_constants.error:
-            warnings.warn("invalid pattern (%s) passed to Regex" % self.pattern,
-                SyntaxWarning, stacklevel=2)
-            raise
-
-        self.name = _ustr(self)
-        self.errmsg = "Expected " + self.name
-        self.mayIndexError = False
-        self.mayReturnEmpty = True
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        result = instring[loc] == self.firstQuoteChar and self.re.match(instring,loc) or None
-        if not result:
-            raise ParseException(instring, loc, self.errmsg, self)
-
-        loc = result.end()
-        ret = result.group()
-
-        if self.unquoteResults:
-
-            # strip off quotes
-            ret = ret[self.quoteCharLen:-self.endQuoteCharLen]
-
-            if isinstance(ret,basestring):
-                # replace escaped whitespace
-                if '\\' in ret and self.convertWhitespaceEscapes:
-                    ws_map = {
-                        r'\t' : '\t',
-                        r'\n' : '\n',
-                        r'\f' : '\f',
-                        r'\r' : '\r',
-                    }
-                    for wslit,wschar in ws_map.items():
-                        ret = ret.replace(wslit, wschar)
-
-                # replace escaped characters
-                if self.escChar:
-                    ret = re.sub(self.escCharReplacePattern, r"\g<1>", ret)
-
-                # replace escaped quotes
-                if self.escQuote:
-                    ret = ret.replace(self.escQuote, self.endQuoteChar)
-
-        return loc, ret
-
-    def __str__( self ):
-        try:
-            return super(QuotedString,self).__str__()
-        except Exception:
-            pass
-
-        if self.strRepr is None:
-            self.strRepr = "quoted string, starting with %s ending with %s" % (self.quoteChar, self.endQuoteChar)
-
-        return self.strRepr
-
-
-class CharsNotIn(Token):
-    """
-    Token for matching words composed of characters I{not} in a given set (will
-    include whitespace in matched characters if not listed in the provided exclusion set - see example).
-    Defined with string containing all disallowed characters, and an optional
-    minimum, maximum, and/or exact length.  The default value for C{min} is 1 (a
-    minimum value < 1 is not valid); the default values for C{max} and C{exact}
-    are 0, meaning no maximum or exact length restriction.
-
-    Example::
-        # define a comma-separated-value as anything that is not a ','
-        csv_value = CharsNotIn(',')
-        print(delimitedList(csv_value).parseString("dkls,lsdkjf,s12 34,@!#,213"))
-    prints::
-        ['dkls', 'lsdkjf', 's12 34', '@!#', '213']
-    """
-    def __init__( self, notChars, min=1, max=0, exact=0 ):
-        super(CharsNotIn,self).__init__()
-        self.skipWhitespace = False
-        self.notChars = notChars
-
-        if min < 1:
-            raise ValueError("cannot specify a minimum length < 1; use Optional(CharsNotIn()) if zero-length char group is permitted")
-
-        self.minLen = min
-
-        if max > 0:
-            self.maxLen = max
-        else:
-            self.maxLen = _MAX_INT
-
-        if exact > 0:
-            self.maxLen = exact
-            self.minLen = exact
-
-        self.name = _ustr(self)
-        self.errmsg = "Expected " + self.name
-        self.mayReturnEmpty = ( self.minLen == 0 )
-        self.mayIndexError = False
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        if instring[loc] in self.notChars:
-            raise ParseException(instring, loc, self.errmsg, self)
-
-        start = loc
-        loc += 1
-        notchars = self.notChars
-        maxlen = min( start+self.maxLen, len(instring) )
-        while loc < maxlen and \
-              (instring[loc] not in notchars):
-            loc += 1
-
-        if loc - start < self.minLen:
-            raise ParseException(instring, loc, self.errmsg, self)
-
-        return loc, instring[start:loc]
-
-    def __str__( self ):
-        try:
-            return super(CharsNotIn, self).__str__()
-        except Exception:
-            pass
-
-        if self.strRepr is None:
-            if len(self.notChars) > 4:
-                self.strRepr = "!W:(%s...)" % self.notChars[:4]
-            else:
-                self.strRepr = "!W:(%s)" % self.notChars
-
-        return self.strRepr
-
-class White(Token):
-    """
-    Special matching class for matching whitespace.  Normally, whitespace is ignored
-    by pyparsing grammars.  This class is included when some whitespace structures
-    are significant.  Define with a string containing the whitespace characters to be
-    matched; default is C{" \\t\\r\\n"}.  Also takes optional C{min}, C{max}, and C{exact} arguments,
-    as defined for the C{L{Word}} class.
-    """
-    whiteStrs = {
-        " " : "<SPC>",
-        "\t": "<TAB>",
-        "\n": "<LF>",
-        "\r": "<CR>",
-        "\f": "<FF>",
-        }
-    def __init__(self, ws=" \t\r\n", min=1, max=0, exact=0):
-        super(White,self).__init__()
-        self.matchWhite = ws
-        self.setWhitespaceChars( "".join(c for c in self.whiteChars if c not in self.matchWhite) )
-        #~ self.leaveWhitespace()
-        self.name = ("".join(White.whiteStrs[c] for c in self.matchWhite))
-        self.mayReturnEmpty = True
-        self.errmsg = "Expected " + self.name
-
-        self.minLen = min
-
-        if max > 0:
-            self.maxLen = max
-        else:
-            self.maxLen = _MAX_INT
-
-        if exact > 0:
-            self.maxLen = exact
-            self.minLen = exact
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        if not(instring[ loc ] in self.matchWhite):
-            raise ParseException(instring, loc, self.errmsg, self)
-        start = loc
-        loc += 1
-        maxloc = start + self.maxLen
-        maxloc = min( maxloc, len(instring) )
-        while loc < maxloc and instring[loc] in self.matchWhite:
-            loc += 1
-
-        if loc - start < self.minLen:
-            raise ParseException(instring, loc, self.errmsg, self)
-
-        return loc, instring[start:loc]
-
-
-class _PositionToken(Token):
-    def __init__( self ):
-        super(_PositionToken,self).__init__()
-        self.name=self.__class__.__name__
-        self.mayReturnEmpty = True
-        self.mayIndexError = False
-
-class GoToColumn(_PositionToken):
-    """
-    Token to advance to a specific column of input text; useful for tabular report scraping.
-    """
-    def __init__( self, colno ):
-        super(GoToColumn,self).__init__()
-        self.col = colno
-
-    def preParse( self, instring, loc ):
-        if col(loc,instring) != self.col:
-            instrlen = len(instring)
-            if self.ignoreExprs:
-                loc = self._skipIgnorables( instring, loc )
-            while loc < instrlen and instring[loc].isspace() and col( loc, instring ) != self.col :
-                loc += 1
-        return loc
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        thiscol = col( loc, instring )
-        if thiscol > self.col:
-            raise ParseException( instring, loc, "Text not in expected column", self )
-        newloc = loc + self.col - thiscol
-        ret = instring[ loc: newloc ]
-        return newloc, ret
-
-
-class LineStart(_PositionToken):
-    """
-    Matches if current position is at the beginning of a line within the parse string
-    
-    Example::
-    
-        test = '''\
-        AAA this line
-        AAA and this line
-          AAA but not this one
-        B AAA and definitely not this one
-        '''
-
-        for t in (LineStart() + 'AAA' + restOfLine).searchString(test):
-            print(t)
-    
-    Prints::
-        ['AAA', ' this line']
-        ['AAA', ' and this line']    
-
-    """
-    def __init__( self ):
-        super(LineStart,self).__init__()
-        self.errmsg = "Expected start of line"
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        if col(loc, instring) == 1:
-            return loc, []
-        raise ParseException(instring, loc, self.errmsg, self)
-
-class LineEnd(_PositionToken):
-    """
-    Matches if current position is at the end of a line within the parse string
-    """
-    def __init__( self ):
-        super(LineEnd,self).__init__()
-        self.setWhitespaceChars( ParserElement.DEFAULT_WHITE_CHARS.replace("\n","") )
-        self.errmsg = "Expected end of line"
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        if loc<len(instring):
-            if instring[loc] == "\n":
-                return loc+1, "\n"
-            else:
-                raise ParseException(instring, loc, self.errmsg, self)
-        elif loc == len(instring):
-            return loc+1, []
-        else:
-            raise ParseException(instring, loc, self.errmsg, self)
-
-class StringStart(_PositionToken):
-    """
-    Matches if current position is at the beginning of the parse string
-    """
-    def __init__( self ):
-        super(StringStart,self).__init__()
-        self.errmsg = "Expected start of text"
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        if loc != 0:
-            # see if entire string up to here is just whitespace and ignoreables
-            if loc != self.preParse( instring, 0 ):
-                raise ParseException(instring, loc, self.errmsg, self)
-        return loc, []
-
-class StringEnd(_PositionToken):
-    """
-    Matches if current position is at the end of the parse string
-    """
-    def __init__( self ):
-        super(StringEnd,self).__init__()
-        self.errmsg = "Expected end of text"
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        if loc < len(instring):
-            raise ParseException(instring, loc, self.errmsg, self)
-        elif loc == len(instring):
-            return loc+1, []
-        elif loc > len(instring):
-            return loc, []
-        else:
-            raise ParseException(instring, loc, self.errmsg, self)
-
-class WordStart(_PositionToken):
-    """
-    Matches if the current position is at the beginning of a Word, and
-    is not preceded by any character in a given set of C{wordChars}
-    (default=C{printables}). To emulate the C{\b} behavior of regular expressions,
-    use C{WordStart(alphanums)}. C{WordStart} will also match at the beginning of
-    the string being parsed, or at the beginning of a line.
-    """
-    def __init__(self, wordChars = printables):
-        super(WordStart,self).__init__()
-        self.wordChars = set(wordChars)
-        self.errmsg = "Not at the start of a word"
-
-    def parseImpl(self, instring, loc, doActions=True ):
-        if loc != 0:
-            if (instring[loc-1] in self.wordChars or
-                instring[loc] not in self.wordChars):
-                raise ParseException(instring, loc, self.errmsg, self)
-        return loc, []
-
-class WordEnd(_PositionToken):
-    """
-    Matches if the current position is at the end of a Word, and
-    is not followed by any character in a given set of C{wordChars}
-    (default=C{printables}). To emulate the C{\b} behavior of regular expressions,
-    use C{WordEnd(alphanums)}. C{WordEnd} will also match at the end of
-    the string being parsed, or at the end of a line.
-    """
-    def __init__(self, wordChars = printables):
-        super(WordEnd,self).__init__()
-        self.wordChars = set(wordChars)
-        self.skipWhitespace = False
-        self.errmsg = "Not at the end of a word"
-
-    def parseImpl(self, instring, loc, doActions=True ):
-        instrlen = len(instring)
-        if instrlen>0 and loc<instrlen:
-            if (instring[loc] in self.wordChars or
-                instring[loc-1] not in self.wordChars):
-                raise ParseException(instring, loc, self.errmsg, self)
-        return loc, []
-
-
-class ParseExpression(ParserElement):
-    """
-    Abstract subclass of ParserElement, for combining and post-processing parsed tokens.
-    """
-    def __init__( self, exprs, savelist = False ):
-        super(ParseExpression,self).__init__(savelist)
-        if isinstance( exprs, _generatorType ):
-            exprs = list(exprs)
-
-        if isinstance( exprs, basestring ):
-            self.exprs = [ ParserElement._literalStringClass( exprs ) ]
-        elif isinstance( exprs, Iterable ):
-            exprs = list(exprs)
-            # if sequence of strings provided, wrap with Literal
-            if all(isinstance(expr, basestring) for expr in exprs):
-                exprs = map(ParserElement._literalStringClass, exprs)
-            self.exprs = list(exprs)
-        else:
-            try:
-                self.exprs = list( exprs )
-            except TypeError:
-                self.exprs = [ exprs ]
-        self.callPreparse = False
-
-    def __getitem__( self, i ):
-        return self.exprs[i]
-
-    def append( self, other ):
-        self.exprs.append( other )
-        self.strRepr = None
-        return self
-
-    def leaveWhitespace( self ):
-        """Extends C{leaveWhitespace} defined in base class, and also invokes C{leaveWhitespace} on
-           all contained expressions."""
-        self.skipWhitespace = False
-        self.exprs = [ e.copy() for e in self.exprs ]
-        for e in self.exprs:
-            e.leaveWhitespace()
-        return self
-
-    def ignore( self, other ):
-        if isinstance( other, Suppress ):
-            if other not in self.ignoreExprs:
-                super( ParseExpression, self).ignore( other )
-                for e in self.exprs:
-                    e.ignore( self.ignoreExprs[-1] )
-        else:
-            super( ParseExpression, self).ignore( other )
-            for e in self.exprs:
-                e.ignore( self.ignoreExprs[-1] )
-        return self
-
-    def __str__( self ):
-        try:
-            return super(ParseExpression,self).__str__()
-        except Exception:
-            pass
-
-        if self.strRepr is None:
-            self.strRepr = "%s:(%s)" % ( self.__class__.__name__, _ustr(self.exprs) )
-        return self.strRepr
-
-    def streamline( self ):
-        super(ParseExpression,self).streamline()
-
-        for e in self.exprs:
-            e.streamline()
-
-        # collapse nested And's of the form And( And( And( a,b), c), d) to And( a,b,c,d )
-        # but only if there are no parse actions or resultsNames on the nested And's
-        # (likewise for Or's and MatchFirst's)
-        if ( len(self.exprs) == 2 ):
-            other = self.exprs[0]
-            if ( isinstance( other, self.__class__ ) and
-                  not(other.parseAction) and
-                  other.resultsName is None and
-                  not other.debug ):
-                self.exprs = other.exprs[:] + [ self.exprs[1] ]
-                self.strRepr = None
-                self.mayReturnEmpty |= other.mayReturnEmpty
-                self.mayIndexError  |= other.mayIndexError
-
-            other = self.exprs[-1]
-            if ( isinstance( other, self.__class__ ) and
-                  not(other.parseAction) and
-                  other.resultsName is None and
-                  not other.debug ):
-                self.exprs = self.exprs[:-1] + other.exprs[:]
-                self.strRepr = None
-                self.mayReturnEmpty |= other.mayReturnEmpty
-                self.mayIndexError  |= other.mayIndexError
-
-        self.errmsg = "Expected " + _ustr(self)
-        
-        return self
-
-    def setResultsName( self, name, listAllMatches=False ):
-        ret = super(ParseExpression,self).setResultsName(name,listAllMatches)
-        return ret
-
-    def validate( self, validateTrace=[] ):
-        tmp = validateTrace[:]+[self]
-        for e in self.exprs:
-            e.validate(tmp)
-        self.checkRecursion( [] )
-        
-    def copy(self):
-        ret = super(ParseExpression,self).copy()
-        ret.exprs = [e.copy() for e in self.exprs]
-        return ret
-
-class And(ParseExpression):
-    """
-    Requires all given C{ParseExpression}s to be found in the given order.
-    Expressions may be separated by whitespace.
-    May be constructed using the C{'+'} operator.
-    May also be constructed using the C{'-'} operator, which will suppress backtracking.
-
-    Example::
-        integer = Word(nums)
-        name_expr = OneOrMore(Word(alphas))
-
-        expr = And([integer("id"),name_expr("name"),integer("age")])
-        # more easily written as:
-        expr = integer("id") + name_expr("name") + integer("age")
-    """
-
-    class _ErrorStop(Empty):
-        def __init__(self, *args, **kwargs):
-            super(And._ErrorStop,self).__init__(*args, **kwargs)
-            self.name = '-'
-            self.leaveWhitespace()
-
-    def __init__( self, exprs, savelist = True ):
-        super(And,self).__init__(exprs, savelist)
-        self.mayReturnEmpty = all(e.mayReturnEmpty for e in self.exprs)
-        self.setWhitespaceChars( self.exprs[0].whiteChars )
-        self.skipWhitespace = self.exprs[0].skipWhitespace
-        self.callPreparse = True
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        # pass False as last arg to _parse for first element, since we already
-        # pre-parsed the string as part of our And pre-parsing
-        loc, resultlist = self.exprs[0]._parse( instring, loc, doActions, callPreParse=False )
-        errorStop = False
-        for e in self.exprs[1:]:
-            if isinstance(e, And._ErrorStop):
-                errorStop = True
-                continue
-            if errorStop:
-                try:
-                    loc, exprtokens = e._parse( instring, loc, doActions )
-                except ParseSyntaxException:
-                    raise
-                except ParseBaseException as pe:
-                    pe.__traceback__ = None
-                    raise ParseSyntaxException._from_exception(pe)
-                except IndexError:
-                    raise ParseSyntaxException(instring, len(instring), self.errmsg, self)
-            else:
-                loc, exprtokens = e._parse( instring, loc, doActions )
-            if exprtokens or exprtokens.haskeys():
-                resultlist += exprtokens
-        return loc, resultlist
-
-    def __iadd__(self, other ):
-        if isinstance( other, basestring ):
-            other = ParserElement._literalStringClass( other )
-        return self.append( other ) #And( [ self, other ] )
-
-    def checkRecursion( self, parseElementList ):
-        subRecCheckList = parseElementList[:] + [ self ]
-        for e in self.exprs:
-            e.checkRecursion( subRecCheckList )
-            if not e.mayReturnEmpty:
-                break
-
-    def __str__( self ):
-        if hasattr(self,"name"):
-            return self.name
-
-        if self.strRepr is None:
-            self.strRepr = "{" + " ".join(_ustr(e) for e in self.exprs) + "}"
-
-        return self.strRepr
-
-
-class Or(ParseExpression):
-    """
-    Requires that at least one C{ParseExpression} is found.
-    If two expressions match, the expression that matches the longest string will be used.
-    May be constructed using the C{'^'} operator.
-
-    Example::
-        # construct Or using '^' operator
-        
-        number = Word(nums) ^ Combine(Word(nums) + '.' + Word(nums))
-        print(number.searchString("123 3.1416 789"))
-    prints::
-        [['123'], ['3.1416'], ['789']]
-    """
-    def __init__( self, exprs, savelist = False ):
-        super(Or,self).__init__(exprs, savelist)
-        if self.exprs:
-            self.mayReturnEmpty = any(e.mayReturnEmpty for e in self.exprs)
-        else:
-            self.mayReturnEmpty = True
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        maxExcLoc = -1
-        maxException = None
-        matches = []
-        for e in self.exprs:
-            try:
-                loc2 = e.tryParse( instring, loc )
-            except ParseException as err:
-                err.__traceback__ = None
-                if err.loc > maxExcLoc:
-                    maxException = err
-                    maxExcLoc = err.loc
-            except IndexError:
-                if len(instring) > maxExcLoc:
-                    maxException = ParseException(instring,len(instring),e.errmsg,self)
-                    maxExcLoc = len(instring)
-            else:
-                # save match among all matches, to retry longest to shortest
-                matches.append((loc2, e))
-
-        if matches:
-            matches.sort(key=lambda x: -x[0])
-            for _,e in matches:
-                try:
-                    return e._parse( instring, loc, doActions )
-                except ParseException as err:
-                    err.__traceback__ = None
-                    if err.loc > maxExcLoc:
-                        maxException = err
-                        maxExcLoc = err.loc
-
-        if maxException is not None:
-            maxException.msg = self.errmsg
-            raise maxException
-        else:
-            raise ParseException(instring, loc, "no defined alternatives to match", self)
-
-
-    def __ixor__(self, other ):
-        if isinstance( other, basestring ):
-            other = ParserElement._literalStringClass( other )
-        return self.append( other ) #Or( [ self, other ] )
-
-    def __str__( self ):
-        if hasattr(self,"name"):
-            return self.name
-
-        if self.strRepr is None:
-            self.strRepr = "{" + " ^ ".join(_ustr(e) for e in self.exprs) + "}"
-
-        return self.strRepr
-
-    def checkRecursion( self, parseElementList ):
-        subRecCheckList = parseElementList[:] + [ self ]
-        for e in self.exprs:
-            e.checkRecursion( subRecCheckList )
-
-
-class MatchFirst(ParseExpression):
-    """
-    Requires that at least one C{ParseExpression} is found.
-    If two expressions match, the first one listed is the one that will match.
-    May be constructed using the C{'|'} operator.
-
-    Example::
-        # construct MatchFirst using '|' operator
-        
-        # watch the order of expressions to match
-        number = Word(nums) | Combine(Word(nums) + '.' + Word(nums))
-        print(number.searchString("123 3.1416 789")) #  Fail! -> [['123'], ['3'], ['1416'], ['789']]
-
-        # put more selective expression first
-        number = Combine(Word(nums) + '.' + Word(nums)) | Word(nums)
-        print(number.searchString("123 3.1416 789")) #  Better -> [['123'], ['3.1416'], ['789']]
-    """
-    def __init__( self, exprs, savelist = False ):
-        super(MatchFirst,self).__init__(exprs, savelist)
-        if self.exprs:
-            self.mayReturnEmpty = any(e.mayReturnEmpty for e in self.exprs)
-        else:
-            self.mayReturnEmpty = True
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        maxExcLoc = -1
-        maxException = None
-        for e in self.exprs:
-            try:
-                ret = e._parse( instring, loc, doActions )
-                return ret
-            except ParseException as err:
-                if err.loc > maxExcLoc:
-                    maxException = err
-                    maxExcLoc = err.loc
-            except IndexError:
-                if len(instring) > maxExcLoc:
-                    maxException = ParseException(instring,len(instring),e.errmsg,self)
-                    maxExcLoc = len(instring)
-
-        # only got here if no expression matched, raise exception for match that made it the furthest
-        else:
-            if maxException is not None:
-                maxException.msg = self.errmsg
-                raise maxException
-            else:
-                raise ParseException(instring, loc, "no defined alternatives to match", self)
-
-    def __ior__(self, other ):
-        if isinstance( other, basestring ):
-            other = ParserElement._literalStringClass( other )
-        return self.append( other ) #MatchFirst( [ self, other ] )
-
-    def __str__( self ):
-        if hasattr(self,"name"):
-            return self.name
-
-        if self.strRepr is None:
-            self.strRepr = "{" + " | ".join(_ustr(e) for e in self.exprs) + "}"
-
-        return self.strRepr
-
-    def checkRecursion( self, parseElementList ):
-        subRecCheckList = parseElementList[:] + [ self ]
-        for e in self.exprs:
-            e.checkRecursion( subRecCheckList )
-
-
-class Each(ParseExpression):
-    """
-    Requires all given C{ParseExpression}s to be found, but in any order.
-    Expressions may be separated by whitespace.
-    May be constructed using the C{'&'} operator.
-
-    Example::
-        color = oneOf("RED ORANGE YELLOW GREEN BLUE PURPLE BLACK WHITE BROWN")
-        shape_type = oneOf("SQUARE CIRCLE TRIANGLE STAR HEXAGON OCTAGON")
-        integer = Word(nums)
-        shape_attr = "shape:" + shape_type("shape")
-        posn_attr = "posn:" + Group(integer("x") + ',' + integer("y"))("posn")
-        color_attr = "color:" + color("color")
-        size_attr = "size:" + integer("size")
-
-        # use Each (using operator '&') to accept attributes in any order 
-        # (shape and posn are required, color and size are optional)
-        shape_spec = shape_attr & posn_attr & Optional(color_attr) & Optional(size_attr)
-
-        shape_spec.runTests('''
-            shape: SQUARE color: BLACK posn: 100, 120
-            shape: CIRCLE size: 50 color: BLUE posn: 50,80
-            color:GREEN size:20 shape:TRIANGLE posn:20,40
-            '''
-            )
-    prints::
-        shape: SQUARE color: BLACK posn: 100, 120
-        ['shape:', 'SQUARE', 'color:', 'BLACK', 'posn:', ['100', ',', '120']]
-        - color: BLACK
-        - posn: ['100', ',', '120']
-          - x: 100
-          - y: 120
-        - shape: SQUARE
-
-
-        shape: CIRCLE size: 50 color: BLUE posn: 50,80
-        ['shape:', 'CIRCLE', 'size:', '50', 'color:', 'BLUE', 'posn:', ['50', ',', '80']]
-        - color: BLUE
-        - posn: ['50', ',', '80']
-          - x: 50
-          - y: 80
-        - shape: CIRCLE
-        - size: 50
-
-
-        color: GREEN size: 20 shape: TRIANGLE posn: 20,40
-        ['color:', 'GREEN', 'size:', '20', 'shape:', 'TRIANGLE', 'posn:', ['20', ',', '40']]
-        - color: GREEN
-        - posn: ['20', ',', '40']
-          - x: 20
-          - y: 40
-        - shape: TRIANGLE
-        - size: 20
-    """
-    def __init__( self, exprs, savelist = True ):
-        super(Each,self).__init__(exprs, savelist)
-        self.mayReturnEmpty = all(e.mayReturnEmpty for e in self.exprs)
-        self.skipWhitespace = True
-        self.initExprGroups = True
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        if self.initExprGroups:
-            self.opt1map = dict((id(e.expr),e) for e in self.exprs if isinstance(e,Optional))
-            opt1 = [ e.expr for e in self.exprs if isinstance(e,Optional) ]
-            opt2 = [ e for e in self.exprs if e.mayReturnEmpty and not isinstance(e,Optional)]
-            self.optionals = opt1 + opt2
-            self.multioptionals = [ e.expr for e in self.exprs if isinstance(e,ZeroOrMore) ]
-            self.multirequired = [ e.expr for e in self.exprs if isinstance(e,OneOrMore) ]
-            self.required = [ e for e in self.exprs if not isinstance(e,(Optional,ZeroOrMore,OneOrMore)) ]
-            self.required += self.multirequired
-            self.initExprGroups = False
-        tmpLoc = loc
-        tmpReqd = self.required[:]
-        tmpOpt  = self.optionals[:]
-        matchOrder = []
-
-        keepMatching = True
-        while keepMatching:
-            tmpExprs = tmpReqd + tmpOpt + self.multioptionals + self.multirequired
-            failed = []
-            for e in tmpExprs:
-                try:
-                    tmpLoc = e.tryParse( instring, tmpLoc )
-                except ParseException:
-                    failed.append(e)
-                else:
-                    matchOrder.append(self.opt1map.get(id(e),e))
-                    if e in tmpReqd:
-                        tmpReqd.remove(e)
-                    elif e in tmpOpt:
-                        tmpOpt.remove(e)
-            if len(failed) == len(tmpExprs):
-                keepMatching = False
-
-        if tmpReqd:
-            missing = ", ".join(_ustr(e) for e in tmpReqd)
-            raise ParseException(instring,loc,"Missing one or more required elements (%s)" % missing )
-
-        # add any unmatched Optionals, in case they have default values defined
-        matchOrder += [e for e in self.exprs if isinstance(e,Optional) and e.expr in tmpOpt]
-
-        resultlist = []
-        for e in matchOrder:
-            loc,results = e._parse(instring,loc,doActions)
-            resultlist.append(results)
-
-        finalResults = sum(resultlist, ParseResults([]))
-        return loc, finalResults
-
-    def __str__( self ):
-        if hasattr(self,"name"):
-            return self.name
-
-        if self.strRepr is None:
-            self.strRepr = "{" + " & ".join(_ustr(e) for e in self.exprs) + "}"
-
-        return self.strRepr
-
-    def checkRecursion( self, parseElementList ):
-        subRecCheckList = parseElementList[:] + [ self ]
-        for e in self.exprs:
-            e.checkRecursion( subRecCheckList )
-
-
-class ParseElementEnhance(ParserElement):
-    """
-    Abstract subclass of C{ParserElement}, for combining and post-processing parsed tokens.
-    """
-    def __init__( self, expr, savelist=False ):
-        super(ParseElementEnhance,self).__init__(savelist)
-        if isinstance( expr, basestring ):
-            if issubclass(ParserElement._literalStringClass, Token):
-                expr = ParserElement._literalStringClass(expr)
-            else:
-                expr = ParserElement._literalStringClass(Literal(expr))
-        self.expr = expr
-        self.strRepr = None
-        if expr is not None:
-            self.mayIndexError = expr.mayIndexError
-            self.mayReturnEmpty = expr.mayReturnEmpty
-            self.setWhitespaceChars( expr.whiteChars )
-            self.skipWhitespace = expr.skipWhitespace
-            self.saveAsList = expr.saveAsList
-            self.callPreparse = expr.callPreparse
-            self.ignoreExprs.extend(expr.ignoreExprs)
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        if self.expr is not None:
-            return self.expr._parse( instring, loc, doActions, callPreParse=False )
-        else:
-            raise ParseException("",loc,self.errmsg,self)
-
-    def leaveWhitespace( self ):
-        self.skipWhitespace = False
-        self.expr = self.expr.copy()
-        if self.expr is not None:
-            self.expr.leaveWhitespace()
-        return self
-
-    def ignore( self, other ):
-        if isinstance( other, Suppress ):
-            if other not in self.ignoreExprs:
-                super( ParseElementEnhance, self).ignore( other )
-                if self.expr is not None:
-                    self.expr.ignore( self.ignoreExprs[-1] )
-        else:
-            super( ParseElementEnhance, self).ignore( other )
-            if self.expr is not None:
-                self.expr.ignore( self.ignoreExprs[-1] )
-        return self
-
-    def streamline( self ):
-        super(ParseElementEnhance,self).streamline()
-        if self.expr is not None:
-            self.expr.streamline()
-        return self
-
-    def checkRecursion( self, parseElementList ):
-        if self in parseElementList:
-            raise RecursiveGrammarException( parseElementList+[self] )
-        subRecCheckList = parseElementList[:] + [ self ]
-        if self.expr is not None:
-            self.expr.checkRecursion( subRecCheckList )
-
-    def validate( self, validateTrace=[] ):
-        tmp = validateTrace[:]+[self]
-        if self.expr is not None:
-            self.expr.validate(tmp)
-        self.checkRecursion( [] )
-
-    def __str__( self ):
-        try:
-            return super(ParseElementEnhance,self).__str__()
-        except Exception:
-            pass
-
-        if self.strRepr is None and self.expr is not None:
-            self.strRepr = "%s:(%s)" % ( self.__class__.__name__, _ustr(self.expr) )
-        return self.strRepr
-
-
-class FollowedBy(ParseElementEnhance):
-    """
-    Lookahead matching of the given parse expression.  C{FollowedBy}
-    does I{not} advance the parsing position within the input string, it only
-    verifies that the specified parse expression matches at the current
-    position.  C{FollowedBy} always returns a null token list.
-
-    Example::
-        # use FollowedBy to match a label only if it is followed by a ':'
-        data_word = Word(alphas)
-        label = data_word + FollowedBy(':')
-        attr_expr = Group(label + Suppress(':') + OneOrMore(data_word, stopOn=label).setParseAction(' '.join))
-        
-        OneOrMore(attr_expr).parseString("shape: SQUARE color: BLACK posn: upper left").pprint()
-    prints::
-        [['shape', 'SQUARE'], ['color', 'BLACK'], ['posn', 'upper left']]
-    """
-    def __init__( self, expr ):
-        super(FollowedBy,self).__init__(expr)
-        self.mayReturnEmpty = True
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        self.expr.tryParse( instring, loc )
-        return loc, []
-
-
-class NotAny(ParseElementEnhance):
-    """
-    Lookahead to disallow matching with the given parse expression.  C{NotAny}
-    does I{not} advance the parsing position within the input string, it only
-    verifies that the specified parse expression does I{not} match at the current
-    position.  Also, C{NotAny} does I{not} skip over leading whitespace. C{NotAny}
-    always returns a null token list.  May be constructed using the '~' operator.
-
-    Example::
-        
-    """
-    def __init__( self, expr ):
-        super(NotAny,self).__init__(expr)
-        #~ self.leaveWhitespace()
-        self.skipWhitespace = False  # do NOT use self.leaveWhitespace(), don't want to propagate to exprs
-        self.mayReturnEmpty = True
-        self.errmsg = "Found unwanted token, "+_ustr(self.expr)
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        if self.expr.canParseNext(instring, loc):
-            raise ParseException(instring, loc, self.errmsg, self)
-        return loc, []
-
-    def __str__( self ):
-        if hasattr(self,"name"):
-            return self.name
-
-        if self.strRepr is None:
-            self.strRepr = "~{" + _ustr(self.expr) + "}"
-
-        return self.strRepr
-
-class _MultipleMatch(ParseElementEnhance):
-    def __init__( self, expr, stopOn=None):
-        super(_MultipleMatch, self).__init__(expr)
-        self.saveAsList = True
-        ender = stopOn
-        if isinstance(ender, basestring):
-            ender = ParserElement._literalStringClass(ender)
-        self.not_ender = ~ender if ender is not None else None
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        self_expr_parse = self.expr._parse
-        self_skip_ignorables = self._skipIgnorables
-        check_ender = self.not_ender is not None
-        if check_ender:
-            try_not_ender = self.not_ender.tryParse
-        
-        # must be at least one (but first see if we are the stopOn sentinel;
-        # if so, fail)
-        if check_ender:
-            try_not_ender(instring, loc)
-        loc, tokens = self_expr_parse( instring, loc, doActions, callPreParse=False )
-        try:
-            hasIgnoreExprs = (not not self.ignoreExprs)
-            while 1:
-                if check_ender:
-                    try_not_ender(instring, loc)
-                if hasIgnoreExprs:
-                    preloc = self_skip_ignorables( instring, loc )
-                else:
-                    preloc = loc
-                loc, tmptokens = self_expr_parse( instring, preloc, doActions )
-                if tmptokens or tmptokens.haskeys():
-                    tokens += tmptokens
-        except (ParseException,IndexError):
-            pass
-
-        return loc, tokens
-        
-class OneOrMore(_MultipleMatch):
-    """
-    Repetition of one or more of the given expression.
-    
-    Parameters:
-     - expr - expression that must match one or more times
-     - stopOn - (default=C{None}) - expression for a terminating sentinel
-          (only required if the sentinel would ordinarily match the repetition 
-          expression)          
-
-    Example::
-        data_word = Word(alphas)
-        label = data_word + FollowedBy(':')
-        attr_expr = Group(label + Suppress(':') + OneOrMore(data_word).setParseAction(' '.join))
-
-        text = "shape: SQUARE posn: upper left color: BLACK"
-        OneOrMore(attr_expr).parseString(text).pprint()  # Fail! read 'color' as data instead of next label -> [['shape', 'SQUARE color']]
-
-        # use stopOn attribute for OneOrMore to avoid reading label string as part of the data
-        attr_expr = Group(label + Suppress(':') + OneOrMore(data_word, stopOn=label).setParseAction(' '.join))
-        OneOrMore(attr_expr).parseString(text).pprint() # Better -> [['shape', 'SQUARE'], ['posn', 'upper left'], ['color', 'BLACK']]
-        
-        # could also be written as
-        (attr_expr * (1,)).parseString(text).pprint()
-    """
-
-    def __str__( self ):
-        if hasattr(self,"name"):
-            return self.name
-
-        if self.strRepr is None:
-            self.strRepr = "{" + _ustr(self.expr) + "}..."
-
-        return self.strRepr
-
-class ZeroOrMore(_MultipleMatch):
-    """
-    Optional repetition of zero or more of the given expression.
-    
-    Parameters:
-     - expr - expression that must match zero or more times
-     - stopOn - (default=C{None}) - expression for a terminating sentinel
-          (only required if the sentinel would ordinarily match the repetition 
-          expression)          
-
-    Example: similar to L{OneOrMore}
-    """
-    def __init__( self, expr, stopOn=None):
-        super(ZeroOrMore,self).__init__(expr, stopOn=stopOn)
-        self.mayReturnEmpty = True
-        
-    def parseImpl( self, instring, loc, doActions=True ):
-        try:
-            return super(ZeroOrMore, self).parseImpl(instring, loc, doActions)
-        except (ParseException,IndexError):
-            return loc, []
-
-    def __str__( self ):
-        if hasattr(self,"name"):
-            return self.name
-
-        if self.strRepr is None:
-            self.strRepr = "[" + _ustr(self.expr) + "]..."
-
-        return self.strRepr
-
-class _NullToken(object):
-    def __bool__(self):
-        return False
-    __nonzero__ = __bool__
-    def __str__(self):
-        return ""
-
-_optionalNotMatched = _NullToken()
-class Optional(ParseElementEnhance):
-    """
-    Optional matching of the given expression.
-
-    Parameters:
-     - expr - expression that must match zero or more times
-     - default (optional) - value to be returned if the optional expression is not found.
-
-    Example::
-        # US postal code can be a 5-digit zip, plus optional 4-digit qualifier
-        zip = Combine(Word(nums, exact=5) + Optional('-' + Word(nums, exact=4)))
-        zip.runTests('''
-            # traditional ZIP code
-            12345
-            
-            # ZIP+4 form
-            12101-0001
-            
-            # invalid ZIP
-            98765-
-            ''')
-    prints::
-        # traditional ZIP code
-        12345
-        ['12345']
-
-        # ZIP+4 form
-        12101-0001
-        ['12101-0001']
-
-        # invalid ZIP
-        98765-
-             ^
-        FAIL: Expected end of text (at char 5), (line:1, col:6)
-    """
-    def __init__( self, expr, default=_optionalNotMatched ):
-        super(Optional,self).__init__( expr, savelist=False )
-        self.saveAsList = self.expr.saveAsList
-        self.defaultValue = default
-        self.mayReturnEmpty = True
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        try:
-            loc, tokens = self.expr._parse( instring, loc, doActions, callPreParse=False )
-        except (ParseException,IndexError):
-            if self.defaultValue is not _optionalNotMatched:
-                if self.expr.resultsName:
-                    tokens = ParseResults([ self.defaultValue ])
-                    tokens[self.expr.resultsName] = self.defaultValue
-                else:
-                    tokens = [ self.defaultValue ]
-            else:
-                tokens = []
-        return loc, tokens
-
-    def __str__( self ):
-        if hasattr(self,"name"):
-            return self.name
-
-        if self.strRepr is None:
-            self.strRepr = "[" + _ustr(self.expr) + "]"
-
-        return self.strRepr
-
-class SkipTo(ParseElementEnhance):
-    """
-    Token for skipping over all undefined text until the matched expression is found.
-
-    Parameters:
-     - expr - target expression marking the end of the data to be skipped
-     - include - (default=C{False}) if True, the target expression is also parsed 
-          (the skipped text and target expression are returned as a 2-element list).
-     - ignore - (default=C{None}) used to define grammars (typically quoted strings and 
-          comments) that might contain false matches to the target expression
-     - failOn - (default=C{None}) define expressions that are not allowed to be 
-          included in the skipped test; if found before the target expression is found, 
-          the SkipTo is not a match
-
-    Example::
-        report = '''
-            Outstanding Issues Report - 1 Jan 2000
-
-               # | Severity | Description                               |  Days Open
-            -----+----------+-------------------------------------------+-----------
-             101 | Critical | Intermittent system crash                 |          6
-              94 | Cosmetic | Spelling error on Login ('log|n')         |         14
-              79 | Minor    | System slow when running too many reports |         47
-            '''
-        integer = Word(nums)
-        SEP = Suppress('|')
-        # use SkipTo to simply match everything up until the next SEP
-        # - ignore quoted strings, so that a '|' character inside a quoted string does not match
-        # - parse action will call token.strip() for each matched token, i.e., the description body
-        string_data = SkipTo(SEP, ignore=quotedString)
-        string_data.setParseAction(tokenMap(str.strip))
-        ticket_expr = (integer("issue_num") + SEP 
-                      + string_data("sev") + SEP 
-                      + string_data("desc") + SEP 
-                      + integer("days_open"))
-        
-        for tkt in ticket_expr.searchString(report):
-            print tkt.dump()
-    prints::
-        ['101', 'Critical', 'Intermittent system crash', '6']
-        - days_open: 6
-        - desc: Intermittent system crash
-        - issue_num: 101
-        - sev: Critical
-        ['94', 'Cosmetic', "Spelling error on Login ('log|n')", '14']
-        - days_open: 14
-        - desc: Spelling error on Login ('log|n')
-        - issue_num: 94
-        - sev: Cosmetic
-        ['79', 'Minor', 'System slow when running too many reports', '47']
-        - days_open: 47
-        - desc: System slow when running too many reports
-        - issue_num: 79
-        - sev: Minor
-    """
-    def __init__( self, other, include=False, ignore=None, failOn=None ):
-        super( SkipTo, self ).__init__( other )
-        self.ignoreExpr = ignore
-        self.mayReturnEmpty = True
-        self.mayIndexError = False
-        self.includeMatch = include
-        self.asList = False
-        if isinstance(failOn, basestring):
-            self.failOn = ParserElement._literalStringClass(failOn)
-        else:
-            self.failOn = failOn
-        self.errmsg = "No match found for "+_ustr(self.expr)
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        startloc = loc
-        instrlen = len(instring)
-        expr = self.expr
-        expr_parse = self.expr._parse
-        self_failOn_canParseNext = self.failOn.canParseNext if self.failOn is not None else None
-        self_ignoreExpr_tryParse = self.ignoreExpr.tryParse if self.ignoreExpr is not None else None
-        
-        tmploc = loc
-        while tmploc <= instrlen:
-            if self_failOn_canParseNext is not None:
-                # break if failOn expression matches
-                if self_failOn_canParseNext(instring, tmploc):
-                    break
-                    
-            if self_ignoreExpr_tryParse is not None:
-                # advance past ignore expressions
-                while 1:
-                    try:
-                        tmploc = self_ignoreExpr_tryParse(instring, tmploc)
-                    except ParseBaseException:
-                        break
-            
-            try:
-                expr_parse(instring, tmploc, doActions=False, callPreParse=False)
-            except (ParseException, IndexError):
-                # no match, advance loc in string
-                tmploc += 1
-            else:
-                # matched skipto expr, done
-                break
-
-        else:
-            # ran off the end of the input string without matching skipto expr, fail
-            raise ParseException(instring, loc, self.errmsg, self)
-
-        # build up return values
-        loc = tmploc
-        skiptext = instring[startloc:loc]
-        skipresult = ParseResults(skiptext)
-        
-        if self.includeMatch:
-            loc, mat = expr_parse(instring,loc,doActions,callPreParse=False)
-            skipresult += mat
-
-        return loc, skipresult
-
-class Forward(ParseElementEnhance):
-    """
-    Forward declaration of an expression to be defined later -
-    used for recursive grammars, such as algebraic infix notation.
-    When the expression is known, it is assigned to the C{Forward} variable using the '<<' operator.
-
-    Note: take care when assigning to C{Forward} not to overlook precedence of operators.
-    Specifically, '|' has a lower precedence than '<<', so that::
-        fwdExpr << a | b | c
-    will actually be evaluated as::
-        (fwdExpr << a) | b | c
-    thereby leaving b and c out as parseable alternatives.  It is recommended that you
-    explicitly group the values inserted into the C{Forward}::
-        fwdExpr << (a | b | c)
-    Converting to use the '<<=' operator instead will avoid this problem.
-
-    See L{ParseResults.pprint} for an example of a recursive parser created using
-    C{Forward}.
-    """
-    def __init__( self, other=None ):
-        super(Forward,self).__init__( other, savelist=False )
-
-    def __lshift__( self, other ):
-        if isinstance( other, basestring ):
-            other = ParserElement._literalStringClass(other)
-        self.expr = other
-        self.strRepr = None
-        self.mayIndexError = self.expr.mayIndexError
-        self.mayReturnEmpty = self.expr.mayReturnEmpty
-        self.setWhitespaceChars( self.expr.whiteChars )
-        self.skipWhitespace = self.expr.skipWhitespace
-        self.saveAsList = self.expr.saveAsList
-        self.ignoreExprs.extend(self.expr.ignoreExprs)
-        return self
-        
-    def __ilshift__(self, other):
-        return self << other
-    
-    def leaveWhitespace( self ):
-        self.skipWhitespace = False
-        return self
-
-    def streamline( self ):
-        if not self.streamlined:
-            self.streamlined = True
-            if self.expr is not None:
-                self.expr.streamline()
-        return self
-
-    def validate( self, validateTrace=[] ):
-        if self not in validateTrace:
-            tmp = validateTrace[:]+[self]
-            if self.expr is not None:
-                self.expr.validate(tmp)
-        self.checkRecursion([])
-
-    def __str__( self ):
-        if hasattr(self,"name"):
-            return self.name
-        return self.__class__.__name__ + ": ..."
-
-        # stubbed out for now - creates awful memory and perf issues
-        self._revertClass = self.__class__
-        self.__class__ = _ForwardNoRecurse
-        try:
-            if self.expr is not None:
-                retString = _ustr(self.expr)
-            else:
-                retString = "None"
-        finally:
-            self.__class__ = self._revertClass
-        return self.__class__.__name__ + ": " + retString
-
-    def copy(self):
-        if self.expr is not None:
-            return super(Forward,self).copy()
-        else:
-            ret = Forward()
-            ret <<= self
-            return ret
-
-class _ForwardNoRecurse(Forward):
-    def __str__( self ):
-        return "..."
-
-class TokenConverter(ParseElementEnhance):
-    """
-    Abstract subclass of C{ParseExpression}, for converting parsed results.
-    """
-    def __init__( self, expr, savelist=False ):
-        super(TokenConverter,self).__init__( expr )#, savelist )
-        self.saveAsList = False
-
-class Combine(TokenConverter):
-    """
-    Converter to concatenate all matching tokens to a single string.
-    By default, the matching patterns must also be contiguous in the input string;
-    this can be disabled by specifying C{'adjacent=False'} in the constructor.
-
-    Example::
-        real = Word(nums) + '.' + Word(nums)
-        print(real.parseString('3.1416')) # -> ['3', '.', '1416']
-        # will also erroneously match the following
-        print(real.parseString('3. 1416')) # -> ['3', '.', '1416']
-
-        real = Combine(Word(nums) + '.' + Word(nums))
-        print(real.parseString('3.1416')) # -> ['3.1416']
-        # no match when there are internal spaces
-        print(real.parseString('3. 1416')) # -> Exception: Expected W:(0123...)
-    """
-    def __init__( self, expr, joinString="", adjacent=True ):
-        super(Combine,self).__init__( expr )
-        # suppress whitespace-stripping in contained parse expressions, but re-enable it on the Combine itself
-        if adjacent:
-            self.leaveWhitespace()
-        self.adjacent = adjacent
-        self.skipWhitespace = True
-        self.joinString = joinString
-        self.callPreparse = True
-
-    def ignore( self, other ):
-        if self.adjacent:
-            ParserElement.ignore(self, other)
-        else:
-            super( Combine, self).ignore( other )
-        return self
-
-    def postParse( self, instring, loc, tokenlist ):
-        retToks = tokenlist.copy()
-        del retToks[:]
-        retToks += ParseResults([ "".join(tokenlist._asStringList(self.joinString)) ], modal=self.modalResults)
-
-        if self.resultsName and retToks.haskeys():
-            return [ retToks ]
-        else:
-            return retToks
-
-class Group(TokenConverter):
-    """
-    Converter to return the matched tokens as a list - useful for returning tokens of C{L{ZeroOrMore}} and C{L{OneOrMore}} expressions.
-
-    Example::
-        ident = Word(alphas)
-        num = Word(nums)
-        term = ident | num
-        func = ident + Optional(delimitedList(term))
-        print(func.parseString("fn a,b,100"))  # -> ['fn', 'a', 'b', '100']
-
-        func = ident + Group(Optional(delimitedList(term)))
-        print(func.parseString("fn a,b,100"))  # -> ['fn', ['a', 'b', '100']]
-    """
-    def __init__( self, expr ):
-        super(Group,self).__init__( expr )
-        self.saveAsList = True
-
-    def postParse( self, instring, loc, tokenlist ):
-        return [ tokenlist ]
-
-class Dict(TokenConverter):
-    """
-    Converter to return a repetitive expression as a list, but also as a dictionary.
-    Each element can also be referenced using the first token in the expression as its key.
-    Useful for tabular report scraping when the first column can be used as a item key.
-
-    Example::
-        data_word = Word(alphas)
-        label = data_word + FollowedBy(':')
-        attr_expr = Group(label + Suppress(':') + OneOrMore(data_word).setParseAction(' '.join))
-
-        text = "shape: SQUARE posn: upper left color: light blue texture: burlap"
-        attr_expr = (label + Suppress(':') + OneOrMore(data_word, stopOn=label).setParseAction(' '.join))
-        
-        # print attributes as plain groups
-        print(OneOrMore(attr_expr).parseString(text).dump())
-        
-        # instead of OneOrMore(expr), parse using Dict(OneOrMore(Group(expr))) - Dict will auto-assign names
-        result = Dict(OneOrMore(Group(attr_expr))).parseString(text)
-        print(result.dump())
-        
-        # access named fields as dict entries, or output as dict
-        print(result['shape'])        
-        print(result.asDict())
-    prints::
-        ['shape', 'SQUARE', 'posn', 'upper left', 'color', 'light blue', 'texture', 'burlap']
-
-        [['shape', 'SQUARE'], ['posn', 'upper left'], ['color', 'light blue'], ['texture', 'burlap']]
-        - color: light blue
-        - posn: upper left
-        - shape: SQUARE
-        - texture: burlap
-        SQUARE
-        {'color': 'light blue', 'posn': 'upper left', 'texture': 'burlap', 'shape': 'SQUARE'}
-    See more examples at L{ParseResults} of accessing fields by results name.
-    """
-    def __init__( self, expr ):
-        super(Dict,self).__init__( expr )
-        self.saveAsList = True
-
-    def postParse( self, instring, loc, tokenlist ):
-        for i,tok in enumerate(tokenlist):
-            if len(tok) == 0:
-                continue
-            ikey = tok[0]
-            if isinstance(ikey,int):
-                ikey = _ustr(tok[0]).strip()
-            if len(tok)==1:
-                tokenlist[ikey] = _ParseResultsWithOffset("",i)
-            elif len(tok)==2 and not isinstance(tok[1],ParseResults):
-                tokenlist[ikey] = _ParseResultsWithOffset(tok[1],i)
-            else:
-                dictvalue = tok.copy() #ParseResults(i)
-                del dictvalue[0]
-                if len(dictvalue)!= 1 or (isinstance(dictvalue,ParseResults) and dictvalue.haskeys()):
-                    tokenlist[ikey] = _ParseResultsWithOffset(dictvalue,i)
-                else:
-                    tokenlist[ikey] = _ParseResultsWithOffset(dictvalue[0],i)
-
-        if self.resultsName:
-            return [ tokenlist ]
-        else:
-            return tokenlist
-
-
-class Suppress(TokenConverter):
-    """
-    Converter for ignoring the results of a parsed expression.
-
-    Example::
-        source = "a, b, c,d"
-        wd = Word(alphas)
-        wd_list1 = wd + ZeroOrMore(',' + wd)
-        print(wd_list1.parseString(source))
-
-        # often, delimiters that are useful during parsing are just in the
-        # way afterward - use Suppress to keep them out of the parsed output
-        wd_list2 = wd + ZeroOrMore(Suppress(',') + wd)
-        print(wd_list2.parseString(source))
-    prints::
-        ['a', ',', 'b', ',', 'c', ',', 'd']
-        ['a', 'b', 'c', 'd']
-    (See also L{delimitedList}.)
-    """
-    def postParse( self, instring, loc, tokenlist ):
-        return []
-
-    def suppress( self ):
-        return self
-
-
-class OnlyOnce(object):
-    """
-    Wrapper for parse actions, to ensure they are only called once.
-    """
-    def __init__(self, methodCall):
-        self.callable = _trim_arity(methodCall)
-        self.called = False
-    def __call__(self,s,l,t):
-        if not self.called:
-            results = self.callable(s,l,t)
-            self.called = True
-            return results
-        raise ParseException(s,l,"")
-    def reset(self):
-        self.called = False
-
-def traceParseAction(f):
-    """
-    Decorator for debugging parse actions. 
-    
-    When the parse action is called, this decorator will print C{">> entering I{method-name}(line:I{current_source_line}, I{parse_location}, I{matched_tokens})".}
-    When the parse action completes, the decorator will print C{"<<"} followed by the returned value, or any exception that the parse action raised.
-
-    Example::
-        wd = Word(alphas)
-
-        @traceParseAction
-        def remove_duplicate_chars(tokens):
-            return ''.join(sorted(set(''.join(tokens))))
-
-        wds = OneOrMore(wd).setParseAction(remove_duplicate_chars)
-        print(wds.parseString("slkdjs sld sldd sdlf sdljf"))
-    prints::
-        >>entering remove_duplicate_chars(line: 'slkdjs sld sldd sdlf sdljf', 0, (['slkdjs', 'sld', 'sldd', 'sdlf', 'sdljf'], {}))
-        <<leaving remove_duplicate_chars (ret: 'dfjkls')
-        ['dfjkls']
-    """
-    f = _trim_arity(f)
-    def z(*paArgs):
-        thisFunc = f.__name__
-        s,l,t = paArgs[-3:]
-        if len(paArgs)>3:
-            thisFunc = paArgs[0].__class__.__name__ + '.' + thisFunc
-        sys.stderr.write( ">>entering %s(line: '%s', %d, %r)\n" % (thisFunc,line(l,s),l,t) )
-        try:
-            ret = f(*paArgs)
-        except Exception as exc:
-            sys.stderr.write( "<<leaving %s (exception: %s)\n" % (thisFunc,exc) )
-            raise
-        sys.stderr.write( "<<leaving %s (ret: %r)\n" % (thisFunc,ret) )
-        return ret
-    try:
-        z.__name__ = f.__name__
-    except AttributeError:
-        pass
-    return z
-
-#
-# global helpers
-#
-def delimitedList( expr, delim=",", combine=False ):
-    """
-    Helper to define a delimited list of expressions - the delimiter defaults to ','.
-    By default, the list elements and delimiters can have intervening whitespace, and
-    comments, but this can be overridden by passing C{combine=True} in the constructor.
-    If C{combine} is set to C{True}, the matching tokens are returned as a single token
-    string, with the delimiters included; otherwise, the matching tokens are returned
-    as a list of tokens, with the delimiters suppressed.
-
-    Example::
-        delimitedList(Word(alphas)).parseString("aa,bb,cc") # -> ['aa', 'bb', 'cc']
-        delimitedList(Word(hexnums), delim=':', combine=True).parseString("AA:BB:CC:DD:EE") # -> ['AA:BB:CC:DD:EE']
-    """
-    dlName = _ustr(expr)+" ["+_ustr(delim)+" "+_ustr(expr)+"]..."
-    if combine:
-        return Combine( expr + ZeroOrMore( delim + expr ) ).setName(dlName)
-    else:
-        return ( expr + ZeroOrMore( Suppress( delim ) + expr ) ).setName(dlName)
-
-def countedArray( expr, intExpr=None ):
-    """
-    Helper to define a counted list of expressions.
-    This helper defines a pattern of the form::
-        integer expr expr expr...
-    where the leading integer tells how many expr expressions follow.
-    The matched tokens returns the array of expr tokens as a list - the leading count token is suppressed.
-    
-    If C{intExpr} is specified, it should be a pyparsing expression that produces an integer value.
-
-    Example::
-        countedArray(Word(alphas)).parseString('2 ab cd ef')  # -> ['ab', 'cd']
-
-        # in this parser, the leading integer value is given in binary,
-        # '10' indicating that 2 values are in the array
-        binaryConstant = Word('01').setParseAction(lambda t: int(t[0], 2))
-        countedArray(Word(alphas), intExpr=binaryConstant).parseString('10 ab cd ef')  # -> ['ab', 'cd']
-    """
-    arrayExpr = Forward()
-    def countFieldParseAction(s,l,t):
-        n = t[0]
-        arrayExpr << (n and Group(And([expr]*n)) or Group(empty))
-        return []
-    if intExpr is None:
-        intExpr = Word(nums).setParseAction(lambda t:int(t[0]))
-    else:
-        intExpr = intExpr.copy()
-    intExpr.setName("arrayLen")
-    intExpr.addParseAction(countFieldParseAction, callDuringTry=True)
-    return ( intExpr + arrayExpr ).setName('(len) ' + _ustr(expr) + '...')
-
-def _flatten(L):
-    ret = []
-    for i in L:
-        if isinstance(i,list):
-            ret.extend(_flatten(i))
-        else:
-            ret.append(i)
-    return ret
-
-def matchPreviousLiteral(expr):
-    """
-    Helper to define an expression that is indirectly defined from
-    the tokens matched in a previous expression, that is, it looks
-    for a 'repeat' of a previous expression.  For example::
-        first = Word(nums)
-        second = matchPreviousLiteral(first)
-        matchExpr = first + ":" + second
-    will match C{"1:1"}, but not C{"1:2"}.  Because this matches a
-    previous literal, will also match the leading C{"1:1"} in C{"1:10"}.
-    If this is not desired, use C{matchPreviousExpr}.
-    Do I{not} use with packrat parsing enabled.
-    """
-    rep = Forward()
-    def copyTokenToRepeater(s,l,t):
-        if t:
-            if len(t) == 1:
-                rep << t[0]
-            else:
-                # flatten t tokens
-                tflat = _flatten(t.asList())
-                rep << And(Literal(tt) for tt in tflat)
-        else:
-            rep << Empty()
-    expr.addParseAction(copyTokenToRepeater, callDuringTry=True)
-    rep.setName('(prev) ' + _ustr(expr))
-    return rep
-
-def matchPreviousExpr(expr):
-    """
-    Helper to define an expression that is indirectly defined from
-    the tokens matched in a previous expression, that is, it looks
-    for a 'repeat' of a previous expression.  For example::
-        first = Word(nums)
-        second = matchPreviousExpr(first)
-        matchExpr = first + ":" + second
-    will match C{"1:1"}, but not C{"1:2"}.  Because this matches by
-    expressions, will I{not} match the leading C{"1:1"} in C{"1:10"};
-    the expressions are evaluated first, and then compared, so
-    C{"1"} is compared with C{"10"}.
-    Do I{not} use with packrat parsing enabled.
-    """
-    rep = Forward()
-    e2 = expr.copy()
-    rep <<= e2
-    def copyTokenToRepeater(s,l,t):
-        matchTokens = _flatten(t.asList())
-        def mustMatchTheseTokens(s,l,t):
-            theseTokens = _flatten(t.asList())
-            if  theseTokens != matchTokens:
-                raise ParseException("",0,"")
-        rep.setParseAction( mustMatchTheseTokens, callDuringTry=True )
-    expr.addParseAction(copyTokenToRepeater, callDuringTry=True)
-    rep.setName('(prev) ' + _ustr(expr))
-    return rep
-
-def _escapeRegexRangeChars(s):
-    #~  escape these chars: ^-]
-    for c in r"\^-]":
-        s = s.replace(c,_bslash+c)
-    s = s.replace("\n",r"\n")
-    s = s.replace("\t",r"\t")
-    return _ustr(s)
-
-def oneOf( strs, caseless=False, useRegex=True ):
-    """
-    Helper to quickly define a set of alternative Literals, and makes sure to do
-    longest-first testing when there is a conflict, regardless of the input order,
-    but returns a C{L{MatchFirst}} for best performance.
-
-    Parameters:
-     - strs - a string of space-delimited literals, or a collection of string literals
-     - caseless - (default=C{False}) - treat all literals as caseless
-     - useRegex - (default=C{True}) - as an optimization, will generate a Regex
-          object; otherwise, will generate a C{MatchFirst} object (if C{caseless=True}, or
-          if creating a C{Regex} raises an exception)
-
-    Example::
-        comp_oper = oneOf("< = > <= >= !=")
-        var = Word(alphas)
-        number = Word(nums)
-        term = var | number
-        comparison_expr = term + comp_oper + term
-        print(comparison_expr.searchString("B = 12  AA=23 B<=AA AA>12"))
-    prints::
-        [['B', '=', '12'], ['AA', '=', '23'], ['B', '<=', 'AA'], ['AA', '>', '12']]
-    """
-    if caseless:
-        isequal = ( lambda a,b: a.upper() == b.upper() )
-        masks = ( lambda a,b: b.upper().startswith(a.upper()) )
-        parseElementClass = CaselessLiteral
-    else:
-        isequal = ( lambda a,b: a == b )
-        masks = ( lambda a,b: b.startswith(a) )
-        parseElementClass = Literal
-
-    symbols = []
-    if isinstance(strs,basestring):
-        symbols = strs.split()
-    elif isinstance(strs, Iterable):
-        symbols = list(strs)
-    else:
-        warnings.warn("Invalid argument to oneOf, expected string or iterable",
-                SyntaxWarning, stacklevel=2)
-    if not symbols:
-        return NoMatch()
-
-    i = 0
-    while i < len(symbols)-1:
-        cur = symbols[i]
-        for j,other in enumerate(symbols[i+1:]):
-            if ( isequal(other, cur) ):
-                del symbols[i+j+1]
-                break
-            elif ( masks(cur, other) ):
-                del symbols[i+j+1]
-                symbols.insert(i,other)
-                cur = other
-                break
-        else:
-            i += 1
-
-    if not caseless and useRegex:
-        #~ print (strs,"->", "|".join( [ _escapeRegexChars(sym) for sym in symbols] ))
-        try:
-            if len(symbols)==len("".join(symbols)):
-                return Regex( "[%s]" % "".join(_escapeRegexRangeChars(sym) for sym in symbols) ).setName(' | '.join(symbols))
-            else:
-                return Regex( "|".join(re.escape(sym) for sym in symbols) ).setName(' | '.join(symbols))
-        except Exception:
-            warnings.warn("Exception creating Regex for oneOf, building MatchFirst",
-                    SyntaxWarning, stacklevel=2)
-
-
-    # last resort, just use MatchFirst
-    return MatchFirst(parseElementClass(sym) for sym in symbols).setName(' | '.join(symbols))
-
-def dictOf( key, value ):
-    """
-    Helper to easily and clearly define a dictionary by specifying the respective patterns
-    for the key and value.  Takes care of defining the C{L{Dict}}, C{L{ZeroOrMore}}, and C{L{Group}} tokens
-    in the proper order.  The key pattern can include delimiting markers or punctuation,
-    as long as they are suppressed, thereby leaving the significant key text.  The value
-    pattern can include named results, so that the C{Dict} results can include named token
-    fields.
-
-    Example::
-        text = "shape: SQUARE posn: upper left color: light blue texture: burlap"
-        attr_expr = (label + Suppress(':') + OneOrMore(data_word, stopOn=label).setParseAction(' '.join))
-        print(OneOrMore(attr_expr).parseString(text).dump())
-        
-        attr_label = label
-        attr_value = Suppress(':') + OneOrMore(data_word, stopOn=label).setParseAction(' '.join)
-
-        # similar to Dict, but simpler call format
-        result = dictOf(attr_label, attr_value).parseString(text)
-        print(result.dump())
-        print(result['shape'])
-        print(result.shape)  # object attribute access works too
-        print(result.asDict())
-    prints::
-        [['shape', 'SQUARE'], ['posn', 'upper left'], ['color', 'light blue'], ['texture', 'burlap']]
-        - color: light blue
-        - posn: upper left
-        - shape: SQUARE
-        - texture: burlap
-        SQUARE
-        SQUARE
-        {'color': 'light blue', 'shape': 'SQUARE', 'posn': 'upper left', 'texture': 'burlap'}
-    """
-    return Dict( ZeroOrMore( Group ( key + value ) ) )
-
-def originalTextFor(expr, asString=True):
-    """
-    Helper to return the original, untokenized text for a given expression.  Useful to
-    restore the parsed fields of an HTML start tag into the raw tag text itself, or to
-    revert separate tokens with intervening whitespace back to the original matching
-    input text. By default, returns astring containing the original parsed text.  
-       
-    If the optional C{asString} argument is passed as C{False}, then the return value is a 
-    C{L{ParseResults}} containing any results names that were originally matched, and a 
-    single token containing the original matched text from the input string.  So if 
-    the expression passed to C{L{originalTextFor}} contains expressions with defined
-    results names, you must set C{asString} to C{False} if you want to preserve those
-    results name values.
-
-    Example::
-        src = "this is test <b> bold <i>text</i> </b> normal text "
-        for tag in ("b","i"):
-            opener,closer = makeHTMLTags(tag)
-            patt = originalTextFor(opener + SkipTo(closer) + closer)
-            print(patt.searchString(src)[0])
-    prints::
-        ['<b> bold <i>text</i> </b>']
-        ['<i>text</i>']
-    """
-    locMarker = Empty().setParseAction(lambda s,loc,t: loc)
-    endlocMarker = locMarker.copy()
-    endlocMarker.callPreparse = False
-    matchExpr = locMarker("_original_start") + expr + endlocMarker("_original_end")
-    if asString:
-        extractText = lambda s,l,t: s[t._original_start:t._original_end]
-    else:
-        def extractText(s,l,t):
-            t[:] = [s[t.pop('_original_start'):t.pop('_original_end')]]
-    matchExpr.setParseAction(extractText)
-    matchExpr.ignoreExprs = expr.ignoreExprs
-    return matchExpr
-
-def ungroup(expr): 
-    """
-    Helper to undo pyparsing's default grouping of And expressions, even
-    if all but one are non-empty.
-    """
-    return TokenConverter(expr).setParseAction(lambda t:t[0])
-
-def locatedExpr(expr):
-    """
-    Helper to decorate a returned token with its starting and ending locations in the input string.
-    This helper adds the following results names:
-     - locn_start = location where matched expression begins
-     - locn_end = location where matched expression ends
-     - value = the actual parsed results
-
-    Be careful if the input text contains C{<TAB>} characters, you may want to call
-    C{L{ParserElement.parseWithTabs}}
-
-    Example::
-        wd = Word(alphas)
-        for match in locatedExpr(wd).searchString("ljsdf123lksdjjf123lkkjj1222"):
-            print(match)
-    prints::
-        [[0, 'ljsdf', 5]]
-        [[8, 'lksdjjf', 15]]
-        [[18, 'lkkjj', 23]]
-    """
-    locator = Empty().setParseAction(lambda s,l,t: l)
-    return Group(locator("locn_start") + expr("value") + locator.copy().leaveWhitespace()("locn_end"))
-
-
-# convenience constants for positional expressions
-empty       = Empty().setName("empty")
-lineStart   = LineStart().setName("lineStart")
-lineEnd     = LineEnd().setName("lineEnd")
-stringStart = StringStart().setName("stringStart")
-stringEnd   = StringEnd().setName("stringEnd")
-
-_escapedPunc = Word( _bslash, r"\[]-*.$+^?()~ ", exact=2 ).setParseAction(lambda s,l,t:t[0][1])
-_escapedHexChar = Regex(r"\\0?[xX][0-9a-fA-F]+").setParseAction(lambda s,l,t:unichr(int(t[0].lstrip(r'\0x'),16)))
-_escapedOctChar = Regex(r"\\0[0-7]+").setParseAction(lambda s,l,t:unichr(int(t[0][1:],8)))
-_singleChar = _escapedPunc | _escapedHexChar | _escapedOctChar | CharsNotIn(r'\]', exact=1)
-_charRange = Group(_singleChar + Suppress("-") + _singleChar)
-_reBracketExpr = Literal("[") + Optional("^").setResultsName("negate") + Group( OneOrMore( _charRange | _singleChar ) ).setResultsName("body") + "]"
-
-def srange(s):
-    r"""
-    Helper to easily define string ranges for use in Word construction.  Borrows
-    syntax from regexp '[]' string range definitions::
-        srange("[0-9]")   -> "0123456789"
-        srange("[a-z]")   -> "abcdefghijklmnopqrstuvwxyz"
-        srange("[a-z$_]") -> "abcdefghijklmnopqrstuvwxyz$_"
-    The input string must be enclosed in []'s, and the returned string is the expanded
-    character set joined into a single string.
-    The values enclosed in the []'s may be:
-     - a single character
-     - an escaped character with a leading backslash (such as C{\-} or C{\]})
-     - an escaped hex character with a leading C{'\x'} (C{\x21}, which is a C{'!'} character) 
-         (C{\0x##} is also supported for backwards compatibility) 
-     - an escaped octal character with a leading C{'\0'} (C{\041}, which is a C{'!'} character)
-     - a range of any of the above, separated by a dash (C{'a-z'}, etc.)
-     - any combination of the above (C{'aeiouy'}, C{'a-zA-Z0-9_$'}, etc.)
-    """
-    _expanded = lambda p: p if not isinstance(p,ParseResults) else ''.join(unichr(c) for c in range(ord(p[0]),ord(p[1])+1))
-    try:
-        return "".join(_expanded(part) for part in _reBracketExpr.parseString(s).body)
-    except Exception:
-        return ""
-
-def matchOnlyAtCol(n):
-    """
-    Helper method for defining parse actions that require matching at a specific
-    column in the input text.
-    """
-    def verifyCol(strg,locn,toks):
-        if col(locn,strg) != n:
-            raise ParseException(strg,locn,"matched token not at column %d" % n)
-    return verifyCol
-
-def replaceWith(replStr):
-    """
-    Helper method for common parse actions that simply return a literal value.  Especially
-    useful when used with C{L{transformString<ParserElement.transformString>}()}.
-
-    Example::
-        num = Word(nums).setParseAction(lambda toks: int(toks[0]))
-        na = oneOf("N/A NA").setParseAction(replaceWith(math.nan))
-        term = na | num
-        
-        OneOrMore(term).parseString("324 234 N/A 234") # -> [324, 234, nan, 234]
-    """
-    return lambda s,l,t: [replStr]
-
-def removeQuotes(s,l,t):
-    """
-    Helper parse action for removing quotation marks from parsed quoted strings.
-
-    Example::
-        # by default, quotation marks are included in parsed results
-        quotedString.parseString("'Now is the Winter of our Discontent'") # -> ["'Now is the Winter of our Discontent'"]
-
-        # use removeQuotes to strip quotation marks from parsed results
-        quotedString.setParseAction(removeQuotes)
-        quotedString.parseString("'Now is the Winter of our Discontent'") # -> ["Now is the Winter of our Discontent"]
-    """
-    return t[0][1:-1]
-
-def tokenMap(func, *args):
-    """
-    Helper to define a parse action by mapping a function to all elements of a ParseResults list.If any additional 
-    args are passed, they are forwarded to the given function as additional arguments after
-    the token, as in C{hex_integer = Word(hexnums).setParseAction(tokenMap(int, 16))}, which will convert the
-    parsed data to an integer using base 16.
-
-    Example (compare the last to example in L{ParserElement.transformString}::
-        hex_ints = OneOrMore(Word(hexnums)).setParseAction(tokenMap(int, 16))
-        hex_ints.runTests('''
-            00 11 22 aa FF 0a 0d 1a
-            ''')
-        
-        upperword = Word(alphas).setParseAction(tokenMap(str.upper))
-        OneOrMore(upperword).runTests('''
-            my kingdom for a horse
-            ''')
-
-        wd = Word(alphas).setParseAction(tokenMap(str.title))
-        OneOrMore(wd).setParseAction(' '.join).runTests('''
-            now is the winter of our discontent made glorious summer by this sun of york
-            ''')
-    prints::
-        00 11 22 aa FF 0a 0d 1a
-        [0, 17, 34, 170, 255, 10, 13, 26]
-
-        my kingdom for a horse
-        ['MY', 'KINGDOM', 'FOR', 'A', 'HORSE']
-
-        now is the winter of our discontent made glorious summer by this sun of york
-        ['Now Is The Winter Of Our Discontent Made Glorious Summer By This Sun Of York']
-    """
-    def pa(s,l,t):
-        return [func(tokn, *args) for tokn in t]
-
-    try:
-        func_name = getattr(func, '__name__', 
-                            getattr(func, '__class__').__name__)
-    except Exception:
-        func_name = str(func)
-    pa.__name__ = func_name
-
-    return pa
-
-upcaseTokens = tokenMap(lambda t: _ustr(t).upper())
-"""(Deprecated) Helper parse action to convert tokens to upper case. Deprecated in favor of L{pyparsing_common.upcaseTokens}"""
-
-downcaseTokens = tokenMap(lambda t: _ustr(t).lower())
-"""(Deprecated) Helper parse action to convert tokens to lower case. Deprecated in favor of L{pyparsing_common.downcaseTokens}"""
-    
-def _makeTags(tagStr, xml):
-    """Internal helper to construct opening and closing tag expressions, given a tag name"""
-    if isinstance(tagStr,basestring):
-        resname = tagStr
-        tagStr = Keyword(tagStr, caseless=not xml)
-    else:
-        resname = tagStr.name
-
-    tagAttrName = Word(alphas,alphanums+"_-:")
-    if (xml):
-        tagAttrValue = dblQuotedString.copy().setParseAction( removeQuotes )
-        openTag = Suppress("<") + tagStr("tag") + \
-                Dict(ZeroOrMore(Group( tagAttrName + Suppress("=") + tagAttrValue ))) + \
-                Optional("/",default=[False]).setResultsName("empty").setParseAction(lambda s,l,t:t[0]=='/') + Suppress(">")
-    else:
-        printablesLessRAbrack = "".join(c for c in printables if c not in ">")
-        tagAttrValue = quotedString.copy().setParseAction( removeQuotes ) | Word(printablesLessRAbrack)
-        openTag = Suppress("<") + tagStr("tag") + \
-                Dict(ZeroOrMore(Group( tagAttrName.setParseAction(downcaseTokens) + \
-                Optional( Suppress("=") + tagAttrValue ) ))) + \
-                Optional("/",default=[False]).setResultsName("empty").setParseAction(lambda s,l,t:t[0]=='/') + Suppress(">")
-    closeTag = Combine(_L("</") + tagStr + ">")
-
-    openTag = openTag.setResultsName("start"+"".join(resname.replace(":"," ").title().split())).setName("<%s>" % resname)
-    closeTag = closeTag.setResultsName("end"+"".join(resname.replace(":"," ").title().split())).setName("</%s>" % resname)
-    openTag.tag = resname
-    closeTag.tag = resname
-    return openTag, closeTag
-
-def makeHTMLTags(tagStr):
-    """
-    Helper to construct opening and closing tag expressions for HTML, given a tag name. Matches
-    tags in either upper or lower case, attributes with namespaces and with quoted or unquoted values.
-
-    Example::
-        text = '<td>More info at the <a href="http://pyparsing.wikispaces.com">pyparsing</a> wiki page</td>'
-        # makeHTMLTags returns pyparsing expressions for the opening and closing tags as a 2-tuple
-        a,a_end = makeHTMLTags("A")
-        link_expr = a + SkipTo(a_end)("link_text") + a_end
-        
-        for link in link_expr.searchString(text):
-            # attributes in the <A> tag (like "href" shown here) are also accessible as named results
-            print(link.link_text, '->', link.href)
-    prints::
-        pyparsing -> http://pyparsing.wikispaces.com
-    """
-    return _makeTags( tagStr, False )
-
-def makeXMLTags(tagStr):
-    """
-    Helper to construct opening and closing tag expressions for XML, given a tag name. Matches
-    tags only in the given upper/lower case.
-
-    Example: similar to L{makeHTMLTags}
-    """
-    return _makeTags( tagStr, True )
-
-def withAttribute(*args,**attrDict):
-    """
-    Helper to create a validating parse action to be used with start tags created
-    with C{L{makeXMLTags}} or C{L{makeHTMLTags}}. Use C{withAttribute} to qualify a starting tag
-    with a required attribute value, to avoid false matches on common tags such as
-    C{<TD>} or C{<DIV>}.
-
-    Call C{withAttribute} with a series of attribute names and values. Specify the list
-    of filter attributes names and values as:
-     - keyword arguments, as in C{(align="right")}, or
-     - as an explicit dict with C{**} operator, when an attribute name is also a Python
-          reserved word, as in C{**{"class":"Customer", "align":"right"}}
-     - a list of name-value tuples, as in ( ("ns1:class", "Customer"), ("ns2:align","right") )
-    For attribute names with a namespace prefix, you must use the second form.  Attribute
-    names are matched insensitive to upper/lower case.
-       
-    If just testing for C{class} (with or without a namespace), use C{L{withClass}}.
-
-    To verify that the attribute exists, but without specifying a value, pass
-    C{withAttribute.ANY_VALUE} as the value.
-
-    Example::
-        html = '''
-            <div>
-            Some text
-            <div type="grid">1 4 0 1 0</div>
-            <div type="graph">1,3 2,3 1,1</div>
-            <div>this has no type</div>
-            </div>
-                
-        '''
-        div,div_end = makeHTMLTags("div")
-
-        # only match div tag having a type attribute with value "grid"
-        div_grid = div().setParseAction(withAttribute(type="grid"))
-        grid_expr = div_grid + SkipTo(div | div_end)("body")
-        for grid_header in grid_expr.searchString(html):
-            print(grid_header.body)
-        
-        # construct a match with any div tag having a type attribute, regardless of the value
-        div_any_type = div().setParseAction(withAttribute(type=withAttribute.ANY_VALUE))
-        div_expr = div_any_type + SkipTo(div | div_end)("body")
-        for div_header in div_expr.searchString(html):
-            print(div_header.body)
-    prints::
-        1 4 0 1 0
-
-        1 4 0 1 0
-        1,3 2,3 1,1
-    """
-    if args:
-        attrs = args[:]
-    else:
-        attrs = attrDict.items()
-    attrs = [(k,v) for k,v in attrs]
-    def pa(s,l,tokens):
-        for attrName,attrValue in attrs:
-            if attrName not in tokens:
-                raise ParseException(s,l,"no matching attribute " + attrName)
-            if attrValue != withAttribute.ANY_VALUE and tokens[attrName] != attrValue:
-                raise ParseException(s,l,"attribute '%s' has value '%s', must be '%s'" %
-                                            (attrName, tokens[attrName], attrValue))
-    return pa
-withAttribute.ANY_VALUE = object()
-
-def withClass(classname, namespace=''):
-    """
-    Simplified version of C{L{withAttribute}} when matching on a div class - made
-    difficult because C{class} is a reserved word in Python.
-
-    Example::
-        html = '''
-            <div>
-            Some text
-            <div class="grid">1 4 0 1 0</div>
-            <div class="graph">1,3 2,3 1,1</div>
-            <div>this &lt;div&gt; has no class</div>
-            </div>
-                
-        '''
-        div,div_end = makeHTMLTags("div")
-        div_grid = div().setParseAction(withClass("grid"))
-        
-        grid_expr = div_grid + SkipTo(div | div_end)("body")
-        for grid_header in grid_expr.searchString(html):
-            print(grid_header.body)
-        
-        div_any_type = div().setParseAction(withClass(withAttribute.ANY_VALUE))
-        div_expr = div_any_type + SkipTo(div | div_end)("body")
-        for div_header in div_expr.searchString(html):
-            print(div_header.body)
-    prints::
-        1 4 0 1 0
-
-        1 4 0 1 0
-        1,3 2,3 1,1
-    """
-    classattr = "%s:class" % namespace if namespace else "class"
-    return withAttribute(**{classattr : classname})        
-
-opAssoc = _Constants()
-opAssoc.LEFT = object()
-opAssoc.RIGHT = object()
-
-def infixNotation( baseExpr, opList, lpar=Suppress('('), rpar=Suppress(')') ):
-    """
-    Helper method for constructing grammars of expressions made up of
-    operators working in a precedence hierarchy.  Operators may be unary or
-    binary, left- or right-associative.  Parse actions can also be attached
-    to operator expressions. The generated parser will also recognize the use 
-    of parentheses to override operator precedences (see example below).
-    
-    Note: if you define a deep operator list, you may see performance issues
-    when using infixNotation. See L{ParserElement.enablePackrat} for a
-    mechanism to potentially improve your parser performance.
-
-    Parameters:
-     - baseExpr - expression representing the most basic element for the nested
-     - opList - list of tuples, one for each operator precedence level in the
-      expression grammar; each tuple is of the form
-      (opExpr, numTerms, rightLeftAssoc, parseAction), where:
-       - opExpr is the pyparsing expression for the operator;
-          may also be a string, which will be converted to a Literal;
-          if numTerms is 3, opExpr is a tuple of two expressions, for the
-          two operators separating the 3 terms
-       - numTerms is the number of terms for this operator (must
-          be 1, 2, or 3)
-       - rightLeftAssoc is the indicator whether the operator is
-          right or left associative, using the pyparsing-defined
-          constants C{opAssoc.RIGHT} and C{opAssoc.LEFT}.
-       - parseAction is the parse action to be associated with
-          expressions matching this operator expression (the
-          parse action tuple member may be omitted); if the parse action
-          is passed a tuple or list of functions, this is equivalent to
-          calling C{setParseAction(*fn)} (L{ParserElement.setParseAction})
-     - lpar - expression for matching left-parentheses (default=C{Suppress('(')})
-     - rpar - expression for matching right-parentheses (default=C{Suppress(')')})
-
-    Example::
-        # simple example of four-function arithmetic with ints and variable names
-        integer = pyparsing_common.signed_integer
-        varname = pyparsing_common.identifier 
-        
-        arith_expr = infixNotation(integer | varname,
-            [
-            ('-', 1, opAssoc.RIGHT),
-            (oneOf('* /'), 2, opAssoc.LEFT),
-            (oneOf('+ -'), 2, opAssoc.LEFT),
-            ])
-        
-        arith_expr.runTests('''
-            5+3*6
-            (5+3)*6
-            -2--11
-            ''', fullDump=False)
-    prints::
-        5+3*6
-        [[5, '+', [3, '*', 6]]]
-
-        (5+3)*6
-        [[[5, '+', 3], '*', 6]]
-
-        -2--11
-        [[['-', 2], '-', ['-', 11]]]
-    """
-    ret = Forward()
-    lastExpr = baseExpr | ( lpar + ret + rpar )
-    for i,operDef in enumerate(opList):
-        opExpr,arity,rightLeftAssoc,pa = (operDef + (None,))[:4]
-        termName = "%s term" % opExpr if arity < 3 else "%s%s term" % opExpr
-        if arity == 3:
-            if opExpr is None or len(opExpr) != 2:
-                raise ValueError("if numterms=3, opExpr must be a tuple or list of two expressions")
-            opExpr1, opExpr2 = opExpr
-        thisExpr = Forward().setName(termName)
-        if rightLeftAssoc == opAssoc.LEFT:
-            if arity == 1:
-                matchExpr = FollowedBy(lastExpr + opExpr) + Group( lastExpr + OneOrMore( opExpr ) )
-            elif arity == 2:
-                if opExpr is not None:
-                    matchExpr = FollowedBy(lastExpr + opExpr + lastExpr) + Group( lastExpr + OneOrMore( opExpr + lastExpr ) )
-                else:
-                    matchExpr = FollowedBy(lastExpr+lastExpr) + Group( lastExpr + OneOrMore(lastExpr) )
-            elif arity == 3:
-                matchExpr = FollowedBy(lastExpr + opExpr1 + lastExpr + opExpr2 + lastExpr) + \
-                            Group( lastExpr + opExpr1 + lastExpr + opExpr2 + lastExpr )
-            else:
-                raise ValueError("operator must be unary (1), binary (2), or ternary (3)")
-        elif rightLeftAssoc == opAssoc.RIGHT:
-            if arity == 1:
-                # try to avoid LR with this extra test
-                if not isinstance(opExpr, Optional):
-                    opExpr = Optional(opExpr)
-                matchExpr = FollowedBy(opExpr.expr + thisExpr) + Group( opExpr + thisExpr )
-            elif arity == 2:
-                if opExpr is not None:
-                    matchExpr = FollowedBy(lastExpr + opExpr + thisExpr) + Group( lastExpr + OneOrMore( opExpr + thisExpr ) )
-                else:
-                    matchExpr = FollowedBy(lastExpr + thisExpr) + Group( lastExpr + OneOrMore( thisExpr ) )
-            elif arity == 3:
-                matchExpr = FollowedBy(lastExpr + opExpr1 + thisExpr + opExpr2 + thisExpr) + \
-                            Group( lastExpr + opExpr1 + thisExpr + opExpr2 + thisExpr )
-            else:
-                raise ValueError("operator must be unary (1), binary (2), or ternary (3)")
-        else:
-            raise ValueError("operator must indicate right or left associativity")
-        if pa:
-            if isinstance(pa, (tuple, list)):
-                matchExpr.setParseAction(*pa)
-            else:
-                matchExpr.setParseAction(pa)
-        thisExpr <<= ( matchExpr.setName(termName) | lastExpr )
-        lastExpr = thisExpr
-    ret <<= lastExpr
-    return ret
-
-operatorPrecedence = infixNotation
-"""(Deprecated) Former name of C{L{infixNotation}}, will be dropped in a future release."""
-
-dblQuotedString = Combine(Regex(r'"(?:[^"\n\r\\]|(?:"")|(?:\\(?:[^x]|x[0-9a-fA-F]+)))*')+'"').setName("string enclosed in double quotes")
-sglQuotedString = Combine(Regex(r"'(?:[^'\n\r\\]|(?:'')|(?:\\(?:[^x]|x[0-9a-fA-F]+)))*")+"'").setName("string enclosed in single quotes")
-quotedString = Combine(Regex(r'"(?:[^"\n\r\\]|(?:"")|(?:\\(?:[^x]|x[0-9a-fA-F]+)))*')+'"'|
-                       Regex(r"'(?:[^'\n\r\\]|(?:'')|(?:\\(?:[^x]|x[0-9a-fA-F]+)))*")+"'").setName("quotedString using single or double quotes")
-unicodeString = Combine(_L('u') + quotedString.copy()).setName("unicode string literal")
-
-def nestedExpr(opener="(", closer=")", content=None, ignoreExpr=quotedString.copy()):
-    """
-    Helper method for defining nested lists enclosed in opening and closing
-    delimiters ("(" and ")" are the default).
-
-    Parameters:
-     - opener - opening character for a nested list (default=C{"("}); can also be a pyparsing expression
-     - closer - closing character for a nested list (default=C{")"}); can also be a pyparsing expression
-     - content - expression for items within the nested lists (default=C{None})
-     - ignoreExpr - expression for ignoring opening and closing delimiters (default=C{quotedString})
-
-    If an expression is not provided for the content argument, the nested
-    expression will capture all whitespace-delimited content between delimiters
-    as a list of separate values.
-
-    Use the C{ignoreExpr} argument to define expressions that may contain
-    opening or closing characters that should not be treated as opening
-    or closing characters for nesting, such as quotedString or a comment
-    expression.  Specify multiple expressions using an C{L{Or}} or C{L{MatchFirst}}.
-    The default is L{quotedString}, but if no expressions are to be ignored,
-    then pass C{None} for this argument.
-
-    Example::
-        data_type = oneOf("void int short long char float double")
-        decl_data_type = Combine(data_type + Optional(Word('*')))
-        ident = Word(alphas+'_', alphanums+'_')
-        number = pyparsing_common.number
-        arg = Group(decl_data_type + ident)
-        LPAR,RPAR = map(Suppress, "()")
-
-        code_body = nestedExpr('{', '}', ignoreExpr=(quotedString | cStyleComment))
-
-        c_function = (decl_data_type("type") 
-                      + ident("name")
-                      + LPAR + Optional(delimitedList(arg), [])("args") + RPAR 
-                      + code_body("body"))
-        c_function.ignore(cStyleComment)
-        
-        source_code = '''
-            int is_odd(int x) { 
-                return (x%2); 
-            }
-                
-            int dec_to_hex(char hchar) { 
-                if (hchar >= '0' && hchar <= '9') { 
-                    return (ord(hchar)-ord('0')); 
-                } else { 
-                    return (10+ord(hchar)-ord('A'));
-                } 
-            }
-        '''
-        for func in c_function.searchString(source_code):
-            print("%(name)s (%(type)s) args: %(args)s" % func)
-
-    prints::
-        is_odd (int) args: [['int', 'x']]
-        dec_to_hex (int) args: [['char', 'hchar']]
-    """
-    if opener == closer:
-        raise ValueError("opening and closing strings cannot be the same")
-    if content is None:
-        if isinstance(opener,basestring) and isinstance(closer,basestring):
-            if len(opener) == 1 and len(closer)==1:
-                if ignoreExpr is not None:
-                    content = (Combine(OneOrMore(~ignoreExpr +
-                                    CharsNotIn(opener+closer+ParserElement.DEFAULT_WHITE_CHARS,exact=1))
-                                ).setParseAction(lambda t:t[0].strip()))
-                else:
-                    content = (empty.copy()+CharsNotIn(opener+closer+ParserElement.DEFAULT_WHITE_CHARS
-                                ).setParseAction(lambda t:t[0].strip()))
-            else:
-                if ignoreExpr is not None:
-                    content = (Combine(OneOrMore(~ignoreExpr + 
-                                    ~Literal(opener) + ~Literal(closer) +
-                                    CharsNotIn(ParserElement.DEFAULT_WHITE_CHARS,exact=1))
-                                ).setParseAction(lambda t:t[0].strip()))
-                else:
-                    content = (Combine(OneOrMore(~Literal(opener) + ~Literal(closer) +
-                                    CharsNotIn(ParserElement.DEFAULT_WHITE_CHARS,exact=1))
-                                ).setParseAction(lambda t:t[0].strip()))
-        else:
-            raise ValueError("opening and closing arguments must be strings if no content expression is given")
-    ret = Forward()
-    if ignoreExpr is not None:
-        ret <<= Group( Suppress(opener) + ZeroOrMore( ignoreExpr | ret | content ) + Suppress(closer) )
-    else:
-        ret <<= Group( Suppress(opener) + ZeroOrMore( ret | content )  + Suppress(closer) )
-    ret.setName('nested %s%s expression' % (opener,closer))
-    return ret
-
-def indentedBlock(blockStatementExpr, indentStack, indent=True):
-    """
-    Helper method for defining space-delimited indentation blocks, such as
-    those used to define block statements in Python source code.
-
-    Parameters:
-     - blockStatementExpr - expression defining syntax of statement that
-            is repeated within the indented block
-     - indentStack - list created by caller to manage indentation stack
-            (multiple statementWithIndentedBlock expressions within a single grammar
-            should share a common indentStack)
-     - indent - boolean indicating whether block must be indented beyond the
-            the current level; set to False for block of left-most statements
-            (default=C{True})
-
-    A valid block must contain at least one C{blockStatement}.
-
-    Example::
-        data = '''
-        def A(z):
-          A1
-          B = 100
-          G = A2
-          A2
-          A3
-        B
-        def BB(a,b,c):
-          BB1
-          def BBA():
-            bba1
-            bba2
-            bba3
-        C
-        D
-        def spam(x,y):
-             def eggs(z):
-                 pass
-        '''
-
-
-        indentStack = [1]
-        stmt = Forward()
-
-        identifier = Word(alphas, alphanums)
-        funcDecl = ("def" + identifier + Group( "(" + Optional( delimitedList(identifier) ) + ")" ) + ":")
-        func_body = indentedBlock(stmt, indentStack)
-        funcDef = Group( funcDecl + func_body )
-
-        rvalue = Forward()
-        funcCall = Group(identifier + "(" + Optional(delimitedList(rvalue)) + ")")
-        rvalue << (funcCall | identifier | Word(nums))
-        assignment = Group(identifier + "=" + rvalue)
-        stmt << ( funcDef | assignment | identifier )
-
-        module_body = OneOrMore(stmt)
-
-        parseTree = module_body.parseString(data)
-        parseTree.pprint()
-    prints::
-        [['def',
-          'A',
-          ['(', 'z', ')'],
-          ':',
-          [['A1'], [['B', '=', '100']], [['G', '=', 'A2']], ['A2'], ['A3']]],
-         'B',
-         ['def',
-          'BB',
-          ['(', 'a', 'b', 'c', ')'],
-          ':',
-          [['BB1'], [['def', 'BBA', ['(', ')'], ':', [['bba1'], ['bba2'], ['bba3']]]]]],
-         'C',
-         'D',
-         ['def',
-          'spam',
-          ['(', 'x', 'y', ')'],
-          ':',
-          [[['def', 'eggs', ['(', 'z', ')'], ':', [['pass']]]]]]] 
-    """
-    def checkPeerIndent(s,l,t):
-        if l >= len(s): return
-        curCol = col(l,s)
-        if curCol != indentStack[-1]:
-            if curCol > indentStack[-1]:
-                raise ParseFatalException(s,l,"illegal nesting")
-            raise ParseException(s,l,"not a peer entry")
-
-    def checkSubIndent(s,l,t):
-        curCol = col(l,s)
-        if curCol > indentStack[-1]:
-            indentStack.append( curCol )
-        else:
-            raise ParseException(s,l,"not a subentry")
-
-    def checkUnindent(s,l,t):
-        if l >= len(s): return
-        curCol = col(l,s)
-        if not(indentStack and curCol < indentStack[-1] and curCol <= indentStack[-2]):
-            raise ParseException(s,l,"not an unindent")
-        indentStack.pop()
-
-    NL = OneOrMore(LineEnd().setWhitespaceChars("\t ").suppress())
-    INDENT = (Empty() + Empty().setParseAction(checkSubIndent)).setName('INDENT')
-    PEER   = Empty().setParseAction(checkPeerIndent).setName('')
-    UNDENT = Empty().setParseAction(checkUnindent).setName('UNINDENT')
-    if indent:
-        smExpr = Group( Optional(NL) +
-            #~ FollowedBy(blockStatementExpr) +
-            INDENT + (OneOrMore( PEER + Group(blockStatementExpr) + Optional(NL) )) + UNDENT)
-    else:
-        smExpr = Group( Optional(NL) +
-            (OneOrMore( PEER + Group(blockStatementExpr) + Optional(NL) )) )
-    blockStatementExpr.ignore(_bslash + LineEnd())
-    return smExpr.setName('indented block')
-
-alphas8bit = srange(r"[\0xc0-\0xd6\0xd8-\0xf6\0xf8-\0xff]")
-punc8bit = srange(r"[\0xa1-\0xbf\0xd7\0xf7]")
-
-anyOpenTag,anyCloseTag = makeHTMLTags(Word(alphas,alphanums+"_:").setName('any tag'))
-_htmlEntityMap = dict(zip("gt lt amp nbsp quot apos".split(),'><& "\''))
-commonHTMLEntity = Regex('&(?P<entity>' + '|'.join(_htmlEntityMap.keys()) +");").setName("common HTML entity")
-def replaceHTMLEntity(t):
-    """Helper parser action to replace common HTML entities with their special characters"""
-    return _htmlEntityMap.get(t.entity)
-
-# it's easy to get these comment structures wrong - they're very common, so may as well make them available
-cStyleComment = Combine(Regex(r"/\*(?:[^*]|\*(?!/))*") + '*/').setName("C style comment")
-"Comment of the form C{/* ... */}"
-
-htmlComment = Regex(r"<!--[\s\S]*?-->").setName("HTML comment")
-"Comment of the form C{<!-- ... -->}"
-
-restOfLine = Regex(r".*").leaveWhitespace().setName("rest of line")
-dblSlashComment = Regex(r"//(?:\\\n|[^\n])*").setName("// comment")
-"Comment of the form C{// ... (to end of line)}"
-
-cppStyleComment = Combine(Regex(r"/\*(?:[^*]|\*(?!/))*") + '*/'| dblSlashComment).setName("C++ style comment")
-"Comment of either form C{L{cStyleComment}} or C{L{dblSlashComment}}"
-
-javaStyleComment = cppStyleComment
-"Same as C{L{cppStyleComment}}"
-
-pythonStyleComment = Regex(r"#.*").setName("Python style comment")
-"Comment of the form C{# ... (to end of line)}"
-
-_commasepitem = Combine(OneOrMore(Word(printables, excludeChars=',') +
-                                  Optional( Word(" \t") +
-                                            ~Literal(",") + ~LineEnd() ) ) ).streamline().setName("commaItem")
-commaSeparatedList = delimitedList( Optional( quotedString.copy() | _commasepitem, default="") ).setName("commaSeparatedList")
-"""(Deprecated) Predefined expression of 1 or more printable words or quoted strings, separated by commas.
-   This expression is deprecated in favor of L{pyparsing_common.comma_separated_list}."""
-
-# some other useful expressions - using lower-case class name since we are really using this as a namespace
-class pyparsing_common:
-    """
-    Here are some common low-level expressions that may be useful in jump-starting parser development:
-     - numeric forms (L{integers<integer>}, L{reals<real>}, L{scientific notation<sci_real>})
-     - common L{programming identifiers<identifier>}
-     - network addresses (L{MAC<mac_address>}, L{IPv4<ipv4_address>}, L{IPv6<ipv6_address>})
-     - ISO8601 L{dates<iso8601_date>} and L{datetime<iso8601_datetime>}
-     - L{UUID<uuid>}
-     - L{comma-separated list<comma_separated_list>}
-    Parse actions:
-     - C{L{convertToInteger}}
-     - C{L{convertToFloat}}
-     - C{L{convertToDate}}
-     - C{L{convertToDatetime}}
-     - C{L{stripHTMLTags}}
-     - C{L{upcaseTokens}}
-     - C{L{downcaseTokens}}
-
-    Example::
-        pyparsing_common.number.runTests('''
-            # any int or real number, returned as the appropriate type
-            100
-            -100
-            +100
-            3.14159
-            6.02e23
-            1e-12
-            ''')
-
-        pyparsing_common.fnumber.runTests('''
-            # any int or real number, returned as float
-            100
-            -100
-            +100
-            3.14159
-            6.02e23
-            1e-12
-            ''')
-
-        pyparsing_common.hex_integer.runTests('''
-            # hex numbers
-            100
-            FF
-            ''')
-
-        pyparsing_common.fraction.runTests('''
-            # fractions
-            1/2
-            -3/4
-            ''')
-
-        pyparsing_common.mixed_integer.runTests('''
-            # mixed fractions
-            1
-            1/2
-            -3/4
-            1-3/4
-            ''')
-
-        import uuid
-        pyparsing_common.uuid.setParseAction(tokenMap(uuid.UUID))
-        pyparsing_common.uuid.runTests('''
-            # uuid
-            12345678-1234-5678-1234-567812345678
-            ''')
-    prints::
-        # any int or real number, returned as the appropriate type
-        100
-        [100]
-
-        -100
-        [-100]
-
-        +100
-        [100]
-
-        3.14159
-        [3.14159]
-
-        6.02e23
-        [6.02e+23]
-
-        1e-12
-        [1e-12]
-
-        # any int or real number, returned as float
-        100
-        [100.0]
-
-        -100
-        [-100.0]
-
-        +100
-        [100.0]
-
-        3.14159
-        [3.14159]
-
-        6.02e23
-        [6.02e+23]
-
-        1e-12
-        [1e-12]
-
-        # hex numbers
-        100
-        [256]
-
-        FF
-        [255]
-
-        # fractions
-        1/2
-        [0.5]
-
-        -3/4
-        [-0.75]
-
-        # mixed fractions
-        1
-        [1]
-
-        1/2
-        [0.5]
-
-        -3/4
-        [-0.75]
-
-        1-3/4
-        [1.75]
-
-        # uuid
-        12345678-1234-5678-1234-567812345678
-        [UUID('12345678-1234-5678-1234-567812345678')]
-    """
-
-    convertToInteger = tokenMap(int)
-    """
-    Parse action for converting parsed integers to Python int
-    """
-
-    convertToFloat = tokenMap(float)
-    """
-    Parse action for converting parsed numbers to Python float
-    """
-
-    integer = Word(nums).setName("integer").setParseAction(convertToInteger)
-    """expression that parses an unsigned integer, returns an int"""
-
-    hex_integer = Word(hexnums).setName("hex integer").setParseAction(tokenMap(int,16))
-    """expression that parses a hexadecimal integer, returns an int"""
-
-    signed_integer = Regex(r'[+-]?\d+').setName("signed integer").setParseAction(convertToInteger)
-    """expression that parses an integer with optional leading sign, returns an int"""
-
-    fraction = (signed_integer().setParseAction(convertToFloat) + '/' + signed_integer().setParseAction(convertToFloat)).setName("fraction")
-    """fractional expression of an integer divided by an integer, returns a float"""
-    fraction.addParseAction(lambda t: t[0]/t[-1])
-
-    mixed_integer = (fraction | signed_integer + Optional(Optional('-').suppress() + fraction)).setName("fraction or mixed integer-fraction")
-    """mixed integer of the form 'integer - fraction', with optional leading integer, returns float"""
-    mixed_integer.addParseAction(sum)
-
-    real = Regex(r'[+-]?\d+\.\d*').setName("real number").setParseAction(convertToFloat)
-    """expression that parses a floating point number and returns a float"""
-
-    sci_real = Regex(r'[+-]?\d+([eE][+-]?\d+|\.\d*([eE][+-]?\d+)?)').setName("real number with scientific notation").setParseAction(convertToFloat)
-    """expression that parses a floating point number with optional scientific notation and returns a float"""
-
-    # streamlining this expression makes the docs nicer-looking
-    number = (sci_real | real | signed_integer).streamline()
-    """any numeric expression, returns the corresponding Python type"""
-
-    fnumber = Regex(r'[+-]?\d+\.?\d*([eE][+-]?\d+)?').setName("fnumber").setParseAction(convertToFloat)
-    """any int or real number, returned as float"""
-    
-    identifier = Word(alphas+'_', alphanums+'_').setName("identifier")
-    """typical code identifier (leading alpha or '_', followed by 0 or more alphas, nums, or '_')"""
-    
-    ipv4_address = Regex(r'(25[0-5]|2[0-4][0-9]|1?[0-9]{1,2})(\.(25[0-5]|2[0-4][0-9]|1?[0-9]{1,2})){3}').setName("IPv4 address")
-    "IPv4 address (C{0.0.0.0 - 255.255.255.255})"
-
-    _ipv6_part = Regex(r'[0-9a-fA-F]{1,4}').setName("hex_integer")
-    _full_ipv6_address = (_ipv6_part + (':' + _ipv6_part)*7).setName("full IPv6 address")
-    _short_ipv6_address = (Optional(_ipv6_part + (':' + _ipv6_part)*(0,6)) + "::" + Optional(_ipv6_part + (':' + _ipv6_part)*(0,6))).setName("short IPv6 address")
-    _short_ipv6_address.addCondition(lambda t: sum(1 for tt in t if pyparsing_common._ipv6_part.matches(tt)) < 8)
-    _mixed_ipv6_address = ("::ffff:" + ipv4_address).setName("mixed IPv6 address")
-    ipv6_address = Combine((_full_ipv6_address | _mixed_ipv6_address | _short_ipv6_address).setName("IPv6 address")).setName("IPv6 address")
-    "IPv6 address (long, short, or mixed form)"
-    
-    mac_address = Regex(r'[0-9a-fA-F]{2}([:.-])[0-9a-fA-F]{2}(?:\1[0-9a-fA-F]{2}){4}').setName("MAC address")
-    "MAC address xx:xx:xx:xx:xx (may also have '-' or '.' delimiters)"
-
-    @staticmethod
-    def convertToDate(fmt="%Y-%m-%d"):
-        """
-        Helper to create a parse action for converting parsed date string to Python datetime.date
-
-        Params -
-         - fmt - format to be passed to datetime.strptime (default=C{"%Y-%m-%d"})
-
-        Example::
-            date_expr = pyparsing_common.iso8601_date.copy()
-            date_expr.setParseAction(pyparsing_common.convertToDate())
-            print(date_expr.parseString("1999-12-31"))
-        prints::
-            [datetime.date(1999, 12, 31)]
-        """
-        def cvt_fn(s,l,t):
-            try:
-                return datetime.strptime(t[0], fmt).date()
-            except ValueError as ve:
-                raise ParseException(s, l, str(ve))
-        return cvt_fn
-
-    @staticmethod
-    def convertToDatetime(fmt="%Y-%m-%dT%H:%M:%S.%f"):
-        """
-        Helper to create a parse action for converting parsed datetime string to Python datetime.datetime
-
-        Params -
-         - fmt - format to be passed to datetime.strptime (default=C{"%Y-%m-%dT%H:%M:%S.%f"})
-
-        Example::
-            dt_expr = pyparsing_common.iso8601_datetime.copy()
-            dt_expr.setParseAction(pyparsing_common.convertToDatetime())
-            print(dt_expr.parseString("1999-12-31T23:59:59.999"))
-        prints::
-            [datetime.datetime(1999, 12, 31, 23, 59, 59, 999000)]
-        """
-        def cvt_fn(s,l,t):
-            try:
-                return datetime.strptime(t[0], fmt)
-            except ValueError as ve:
-                raise ParseException(s, l, str(ve))
-        return cvt_fn
-
-    iso8601_date = Regex(r'(?P<year>\d{4})(?:-(?P<month>\d\d)(?:-(?P<day>\d\d))?)?').setName("ISO8601 date")
-    "ISO8601 date (C{yyyy-mm-dd})"
-
-    iso8601_datetime = Regex(r'(?P<year>\d{4})-(?P<month>\d\d)-(?P<day>\d\d)[T ](?P<hour>\d\d):(?P<minute>\d\d)(:(?P<second>\d\d(\.\d*)?)?)?(?P<tz>Z|[+-]\d\d:?\d\d)?').setName("ISO8601 datetime")
-    "ISO8601 datetime (C{yyyy-mm-ddThh:mm:ss.s(Z|+-00:00)}) - trailing seconds, milliseconds, and timezone optional; accepts separating C{'T'} or C{' '}"
-
-    uuid = Regex(r'[0-9a-fA-F]{8}(-[0-9a-fA-F]{4}){3}-[0-9a-fA-F]{12}').setName("UUID")
-    "UUID (C{xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx})"
-
-    _html_stripper = anyOpenTag.suppress() | anyCloseTag.suppress()
-    @staticmethod
-    def stripHTMLTags(s, l, tokens):
-        """
-        Parse action to remove HTML tags from web page HTML source
-
-        Example::
-            # strip HTML links from normal text 
-            text = '<td>More info at the <a href="http://pyparsing.wikispaces.com">pyparsing</a> wiki page</td>'
-            td,td_end = makeHTMLTags("TD")
-            table_text = td + SkipTo(td_end).setParseAction(pyparsing_common.stripHTMLTags)("body") + td_end
-            
-            print(table_text.parseString(text).body) # -> 'More info at the pyparsing wiki page'
-        """
-        return pyparsing_common._html_stripper.transformString(tokens[0])
-
-    _commasepitem = Combine(OneOrMore(~Literal(",") + ~LineEnd() + Word(printables, excludeChars=',') 
-                                        + Optional( White(" \t") ) ) ).streamline().setName("commaItem")
-    comma_separated_list = delimitedList( Optional( quotedString.copy() | _commasepitem, default="") ).setName("comma separated list")
-    """Predefined expression of 1 or more printable words or quoted strings, separated by commas."""
-
-    upcaseTokens = staticmethod(tokenMap(lambda t: _ustr(t).upper()))
-    """Parse action to convert tokens to upper case."""
-
-    downcaseTokens = staticmethod(tokenMap(lambda t: _ustr(t).lower()))
-    """Parse action to convert tokens to lower case."""
-
-
-if __name__ == "__main__":
-
-    selectToken    = CaselessLiteral("select")
-    fromToken      = CaselessLiteral("from")
-
-    ident          = Word(alphas, alphanums + "_$")
-
-    columnName     = delimitedList(ident, ".", combine=True).setParseAction(upcaseTokens)
-    columnNameList = Group(delimitedList(columnName)).setName("columns")
-    columnSpec     = ('*' | columnNameList)
-
-    tableName      = delimitedList(ident, ".", combine=True).setParseAction(upcaseTokens)
-    tableNameList  = Group(delimitedList(tableName)).setName("tables")
-    
-    simpleSQL      = selectToken("command") + columnSpec("columns") + fromToken + tableNameList("tables")
-
-    # demo runTests method, including embedded comments in test string
-    simpleSQL.runTests("""
-        # '*' as column list and dotted table name
-        select * from SYS.XYZZY
-
-        # caseless match on "SELECT", and casts back to "select"
-        SELECT * from XYZZY, ABC
-
-        # list of column names, and mixed case SELECT keyword
-        Select AA,BB,CC from Sys.dual
-
-        # multiple tables
-        Select A, B, C from Sys.dual, Table2
-
-        # invalid SELECT keyword - should fail
-        Xelect A, B, C from Sys.dual
-
-        # incomplete command - should fail
-        Select
-
-        # invalid column name - should fail
-        Select ^^^ frox Sys.dual
-
-        """)
-
-    pyparsing_common.number.runTests("""
-        100
-        -100
-        +100
-        3.14159
-        6.02e23
-        1e-12
-        """)
-
-    # any int or real number, returned as float
-    pyparsing_common.fnumber.runTests("""
-        100
-        -100
-        +100
-        3.14159
-        6.02e23
-        1e-12
-        """)
-
-    pyparsing_common.hex_integer.runTests("""
-        100
-        FF
-        """)
-
-    import uuid
-    pyparsing_common.uuid.setParseAction(tokenMap(uuid.UUID))
-    pyparsing_common.uuid.runTests("""
-        12345678-1234-5678-1234-567812345678
-        """)
+# module pyparsing.py
+#
+# Copyright (c) 2003-2018  Paul T. McGuire
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+
+__doc__ = \
+"""
+pyparsing module - Classes and methods to define and execute parsing grammars
+=============================================================================
+
+The pyparsing module is an alternative approach to creating and executing simple grammars,
+vs. the traditional lex/yacc approach, or the use of regular expressions.  With pyparsing, you
+don't need to learn a new syntax for defining grammars or matching expressions - the parsing module
+provides a library of classes that you use to construct the grammar directly in Python.
+
+Here is a program to parse "Hello, World!" (or any greeting of the form 
+C{"<salutation>, <addressee>!"}), built up using L{Word}, L{Literal}, and L{And} elements 
+(L{'+'<ParserElement.__add__>} operator gives L{And} expressions, strings are auto-converted to
+L{Literal} expressions)::
+
+    from pyparsing import Word, alphas
+
+    # define grammar of a greeting
+    greet = Word(alphas) + "," + Word(alphas) + "!"
+
+    hello = "Hello, World!"
+    print (hello, "->", greet.parseString(hello))
+
+The program outputs the following::
+
+    Hello, World! -> ['Hello', ',', 'World', '!']
+
+The Python representation of the grammar is quite readable, owing to the self-explanatory
+class names, and the use of '+', '|' and '^' operators.
+
+The L{ParseResults} object returned from L{ParserElement.parseString<ParserElement.parseString>} can be accessed as a nested list, a dictionary, or an
+object with named attributes.
+
+The pyparsing module handles some of the problems that are typically vexing when writing text parsers:
+ - extra or missing whitespace (the above program will also handle "Hello,World!", "Hello  ,  World  !", etc.)
+ - quoted strings
+ - embedded comments
+
+
+Getting Started -
+-----------------
+Visit the classes L{ParserElement} and L{ParseResults} to see the base classes that most other pyparsing
+classes inherit from. Use the docstrings for examples of how to:
+ - construct literal match expressions from L{Literal} and L{CaselessLiteral} classes
+ - construct character word-group expressions using the L{Word} class
+ - see how to create repetitive expressions using L{ZeroOrMore} and L{OneOrMore} classes
+ - use L{'+'<And>}, L{'|'<MatchFirst>}, L{'^'<Or>}, and L{'&'<Each>} operators to combine simple expressions into more complex ones
+ - associate names with your parsed results using L{ParserElement.setResultsName}
+ - find some helpful expression short-cuts like L{delimitedList} and L{oneOf}
+ - find more useful common expressions in the L{pyparsing_common} namespace class
+"""
+
+__version__ = "2.2.1"
+__versionTime__ = "18 Sep 2018 00:49 UTC"
+__author__ = "Paul McGuire <ptmcg@users.sourceforge.net>"
+
+import string
+from weakref import ref as wkref
+import copy
+import sys
+import warnings
+import re
+import sre_constants
+import collections
+import pprint
+import traceback
+import types
+from datetime import datetime
+
+try:
+    from _thread import RLock
+except ImportError:
+    from threading import RLock
+
+try:
+    # Python 3
+    from collections.abc import Iterable
+    from collections.abc import MutableMapping
+except ImportError:
+    # Python 2.7
+    from collections import Iterable
+    from collections import MutableMapping
+
+try:
+    from collections import OrderedDict as _OrderedDict
+except ImportError:
+    try:
+        from ordereddict import OrderedDict as _OrderedDict
+    except ImportError:
+        _OrderedDict = None
+
+#~ sys.stderr.write( "testing pyparsing module, version %s, %s\n" % (__version__,__versionTime__ ) )
+
+__all__ = [
+'And', 'CaselessKeyword', 'CaselessLiteral', 'CharsNotIn', 'Combine', 'Dict', 'Each', 'Empty',
+'FollowedBy', 'Forward', 'GoToColumn', 'Group', 'Keyword', 'LineEnd', 'LineStart', 'Literal',
+'MatchFirst', 'NoMatch', 'NotAny', 'OneOrMore', 'OnlyOnce', 'Optional', 'Or',
+'ParseBaseException', 'ParseElementEnhance', 'ParseException', 'ParseExpression', 'ParseFatalException',
+'ParseResults', 'ParseSyntaxException', 'ParserElement', 'QuotedString', 'RecursiveGrammarException',
+'Regex', 'SkipTo', 'StringEnd', 'StringStart', 'Suppress', 'Token', 'TokenConverter', 
+'White', 'Word', 'WordEnd', 'WordStart', 'ZeroOrMore',
+'alphanums', 'alphas', 'alphas8bit', 'anyCloseTag', 'anyOpenTag', 'cStyleComment', 'col',
+'commaSeparatedList', 'commonHTMLEntity', 'countedArray', 'cppStyleComment', 'dblQuotedString',
+'dblSlashComment', 'delimitedList', 'dictOf', 'downcaseTokens', 'empty', 'hexnums',
+'htmlComment', 'javaStyleComment', 'line', 'lineEnd', 'lineStart', 'lineno',
+'makeHTMLTags', 'makeXMLTags', 'matchOnlyAtCol', 'matchPreviousExpr', 'matchPreviousLiteral',
+'nestedExpr', 'nullDebugAction', 'nums', 'oneOf', 'opAssoc', 'operatorPrecedence', 'printables',
+'punc8bit', 'pythonStyleComment', 'quotedString', 'removeQuotes', 'replaceHTMLEntity', 
+'replaceWith', 'restOfLine', 'sglQuotedString', 'srange', 'stringEnd',
+'stringStart', 'traceParseAction', 'unicodeString', 'upcaseTokens', 'withAttribute',
+'indentedBlock', 'originalTextFor', 'ungroup', 'infixNotation','locatedExpr', 'withClass',
+'CloseMatch', 'tokenMap', 'pyparsing_common',
+]
+
+system_version = tuple(sys.version_info)[:3]
+PY_3 = system_version[0] == 3
+if PY_3:
+    _MAX_INT = sys.maxsize
+    basestring = str
+    unichr = chr
+    _ustr = str
+
+    # build list of single arg builtins, that can be used as parse actions
+    singleArgBuiltins = [sum, len, sorted, reversed, list, tuple, set, any, all, min, max]
+
+else:
+    _MAX_INT = sys.maxint
+    range = xrange
+
+    def _ustr(obj):
+        """Drop-in replacement for str(obj) that tries to be Unicode friendly. It first tries
+           str(obj). If that fails with a UnicodeEncodeError, then it tries unicode(obj). It
+           then < returns the unicode object | encodes it with the default encoding | ... >.
+        """
+        if isinstance(obj,unicode):
+            return obj
+
+        try:
+            # If this works, then _ustr(obj) has the same behaviour as str(obj), so
+            # it won't break any existing code.
+            return str(obj)
+
+        except UnicodeEncodeError:
+            # Else encode it
+            ret = unicode(obj).encode(sys.getdefaultencoding(), 'xmlcharrefreplace')
+            xmlcharref = Regex(r'&#\d+;')
+            xmlcharref.setParseAction(lambda t: '\\u' + hex(int(t[0][2:-1]))[2:])
+            return xmlcharref.transformString(ret)
+
+    # build list of single arg builtins, tolerant of Python version, that can be used as parse actions
+    singleArgBuiltins = []
+    import __builtin__
+    for fname in "sum len sorted reversed list tuple set any all min max".split():
+        try:
+            singleArgBuiltins.append(getattr(__builtin__,fname))
+        except AttributeError:
+            continue
+            
+_generatorType = type((y for y in range(1)))
+ 
+def _xml_escape(data):
+    """Escape &, <, >, ", ', etc. in a string of data."""
+
+    # ampersand must be replaced first
+    from_symbols = '&><"\''
+    to_symbols = ('&'+s+';' for s in "amp gt lt quot apos".split())
+    for from_,to_ in zip(from_symbols, to_symbols):
+        data = data.replace(from_, to_)
+    return data
+
+class _Constants(object):
+    pass
+
+alphas     = string.ascii_uppercase + string.ascii_lowercase
+nums       = "0123456789"
+hexnums    = nums + "ABCDEFabcdef"
+alphanums  = alphas + nums
+_bslash    = chr(92)
+printables = "".join(c for c in string.printable if c not in string.whitespace)
+
+class ParseBaseException(Exception):
+    """base exception class for all parsing runtime exceptions"""
+    # Performance tuning: we construct a *lot* of these, so keep this
+    # constructor as small and fast as possible
+    def __init__( self, pstr, loc=0, msg=None, elem=None ):
+        self.loc = loc
+        if msg is None:
+            self.msg = pstr
+            self.pstr = ""
+        else:
+            self.msg = msg
+            self.pstr = pstr
+        self.parserElement = elem
+        self.args = (pstr, loc, msg)
+
+    @classmethod
+    def _from_exception(cls, pe):
+        """
+        internal factory method to simplify creating one type of ParseException 
+        from another - avoids having __init__ signature conflicts among subclasses
+        """
+        return cls(pe.pstr, pe.loc, pe.msg, pe.parserElement)
+
+    def __getattr__( self, aname ):
+        """supported attributes by name are:
+            - lineno - returns the line number of the exception text
+            - col - returns the column number of the exception text
+            - line - returns the line containing the exception text
+        """
+        if( aname == "lineno" ):
+            return lineno( self.loc, self.pstr )
+        elif( aname in ("col", "column") ):
+            return col( self.loc, self.pstr )
+        elif( aname == "line" ):
+            return line( self.loc, self.pstr )
+        else:
+            raise AttributeError(aname)
+
+    def __str__( self ):
+        return "%s (at char %d), (line:%d, col:%d)" % \
+                ( self.msg, self.loc, self.lineno, self.column )
+    def __repr__( self ):
+        return _ustr(self)
+    def markInputline( self, markerString = ">!<" ):
+        """Extracts the exception line from the input string, and marks
+           the location of the exception with a special symbol.
+        """
+        line_str = self.line
+        line_column = self.column - 1
+        if markerString:
+            line_str = "".join((line_str[:line_column],
+                                markerString, line_str[line_column:]))
+        return line_str.strip()
+    def __dir__(self):
+        return "lineno col line".split() + dir(type(self))
+
+class ParseException(ParseBaseException):
+    """
+    Exception thrown when parse expressions don't match class;
+    supported attributes by name are:
+     - lineno - returns the line number of the exception text
+     - col - returns the column number of the exception text
+     - line - returns the line containing the exception text
+        
+    Example::
+        try:
+            Word(nums).setName("integer").parseString("ABC")
+        except ParseException as pe:
+            print(pe)
+            print("column: {}".format(pe.col))
+            
+    prints::
+       Expected integer (at char 0), (line:1, col:1)
+        column: 1
+    """
+    pass
+
+class ParseFatalException(ParseBaseException):
+    """user-throwable exception thrown when inconsistent parse content
+       is found; stops all parsing immediately"""
+    pass
+
+class ParseSyntaxException(ParseFatalException):
+    """just like L{ParseFatalException}, but thrown internally when an
+       L{ErrorStop<And._ErrorStop>} ('-' operator) indicates that parsing is to stop 
+       immediately because an unbacktrackable syntax error has been found"""
+    pass
+
+#~ class ReparseException(ParseBaseException):
+    #~ """Experimental class - parse actions can raise this exception to cause
+       #~ pyparsing to reparse the input string:
+        #~ - with a modified input string, and/or
+        #~ - with a modified start location
+       #~ Set the values of the ReparseException in the constructor, and raise the
+       #~ exception in a parse action to cause pyparsing to use the new string/location.
+       #~ Setting the values as None causes no change to be made.
+       #~ """
+    #~ def __init_( self, newstring, restartLoc ):
+        #~ self.newParseText = newstring
+        #~ self.reparseLoc = restartLoc
+
+class RecursiveGrammarException(Exception):
+    """exception thrown by L{ParserElement.validate} if the grammar could be improperly recursive"""
+    def __init__( self, parseElementList ):
+        self.parseElementTrace = parseElementList
+
+    def __str__( self ):
+        return "RecursiveGrammarException: %s" % self.parseElementTrace
+
+class _ParseResultsWithOffset(object):
+    def __init__(self,p1,p2):
+        self.tup = (p1,p2)
+    def __getitem__(self,i):
+        return self.tup[i]
+    def __repr__(self):
+        return repr(self.tup[0])
+    def setOffset(self,i):
+        self.tup = (self.tup[0],i)
+
+class ParseResults(object):
+    """
+    Structured parse results, to provide multiple means of access to the parsed data:
+       - as a list (C{len(results)})
+       - by list index (C{results[0], results[1]}, etc.)
+       - by attribute (C{results.<resultsName>} - see L{ParserElement.setResultsName})
+
+    Example::
+        integer = Word(nums)
+        date_str = (integer.setResultsName("year") + '/' 
+                        + integer.setResultsName("month") + '/' 
+                        + integer.setResultsName("day"))
+        # equivalent form:
+        # date_str = integer("year") + '/' + integer("month") + '/' + integer("day")
+
+        # parseString returns a ParseResults object
+        result = date_str.parseString("1999/12/31")
+
+        def test(s, fn=repr):
+            print("%s -> %s" % (s, fn(eval(s))))
+        test("list(result)")
+        test("result[0]")
+        test("result['month']")
+        test("result.day")
+        test("'month' in result")
+        test("'minutes' in result")
+        test("result.dump()", str)
+    prints::
+        list(result) -> ['1999', '/', '12', '/', '31']
+        result[0] -> '1999'
+        result['month'] -> '12'
+        result.day -> '31'
+        'month' in result -> True
+        'minutes' in result -> False
+        result.dump() -> ['1999', '/', '12', '/', '31']
+        - day: 31
+        - month: 12
+        - year: 1999
+    """
+    def __new__(cls, toklist=None, name=None, asList=True, modal=True ):
+        if isinstance(toklist, cls):
+            return toklist
+        retobj = object.__new__(cls)
+        retobj.__doinit = True
+        return retobj
+
+    # Performance tuning: we construct a *lot* of these, so keep this
+    # constructor as small and fast as possible
+    def __init__( self, toklist=None, name=None, asList=True, modal=True, isinstance=isinstance ):
+        if self.__doinit:
+            self.__doinit = False
+            self.__name = None
+            self.__parent = None
+            self.__accumNames = {}
+            self.__asList = asList
+            self.__modal = modal
+            if toklist is None:
+                toklist = []
+            if isinstance(toklist, list):
+                self.__toklist = toklist[:]
+            elif isinstance(toklist, _generatorType):
+                self.__toklist = list(toklist)
+            else:
+                self.__toklist = [toklist]
+            self.__tokdict = dict()
+
+        if name is not None and name:
+            if not modal:
+                self.__accumNames[name] = 0
+            if isinstance(name,int):
+                name = _ustr(name) # will always return a str, but use _ustr for consistency
+            self.__name = name
+            if not (isinstance(toklist, (type(None), basestring, list)) and toklist in (None,'',[])):
+                if isinstance(toklist,basestring):
+                    toklist = [ toklist ]
+                if asList:
+                    if isinstance(toklist,ParseResults):
+                        self[name] = _ParseResultsWithOffset(toklist.copy(),0)
+                    else:
+                        self[name] = _ParseResultsWithOffset(ParseResults(toklist[0]),0)
+                    self[name].__name = name
+                else:
+                    try:
+                        self[name] = toklist[0]
+                    except (KeyError,TypeError,IndexError):
+                        self[name] = toklist
+
+    def __getitem__( self, i ):
+        if isinstance( i, (int,slice) ):
+            return self.__toklist[i]
+        else:
+            if i not in self.__accumNames:
+                return self.__tokdict[i][-1][0]
+            else:
+                return ParseResults([ v[0] for v in self.__tokdict[i] ])
+
+    def __setitem__( self, k, v, isinstance=isinstance ):
+        if isinstance(v,_ParseResultsWithOffset):
+            self.__tokdict[k] = self.__tokdict.get(k,list()) + [v]
+            sub = v[0]
+        elif isinstance(k,(int,slice)):
+            self.__toklist[k] = v
+            sub = v
+        else:
+            self.__tokdict[k] = self.__tokdict.get(k,list()) + [_ParseResultsWithOffset(v,0)]
+            sub = v
+        if isinstance(sub,ParseResults):
+            sub.__parent = wkref(self)
+
+    def __delitem__( self, i ):
+        if isinstance(i,(int,slice)):
+            mylen = len( self.__toklist )
+            del self.__toklist[i]
+
+            # convert int to slice
+            if isinstance(i, int):
+                if i < 0:
+                    i += mylen
+                i = slice(i, i+1)
+            # get removed indices
+            removed = list(range(*i.indices(mylen)))
+            removed.reverse()
+            # fixup indices in token dictionary
+            for name,occurrences in self.__tokdict.items():
+                for j in removed:
+                    for k, (value, position) in enumerate(occurrences):
+                        occurrences[k] = _ParseResultsWithOffset(value, position - (position > j))
+        else:
+            del self.__tokdict[i]
+
+    def __contains__( self, k ):
+        return k in self.__tokdict
+
+    def __len__( self ): return len( self.__toklist )
+    def __bool__(self): return ( not not self.__toklist )
+    __nonzero__ = __bool__
+    def __iter__( self ): return iter( self.__toklist )
+    def __reversed__( self ): return iter( self.__toklist[::-1] )
+    def _iterkeys( self ):
+        if hasattr(self.__tokdict, "iterkeys"):
+            return self.__tokdict.iterkeys()
+        else:
+            return iter(self.__tokdict)
+
+    def _itervalues( self ):
+        return (self[k] for k in self._iterkeys())
+            
+    def _iteritems( self ):
+        return ((k, self[k]) for k in self._iterkeys())
+
+    if PY_3:
+        keys = _iterkeys       
+        """Returns an iterator of all named result keys (Python 3.x only)."""
+
+        values = _itervalues
+        """Returns an iterator of all named result values (Python 3.x only)."""
+
+        items = _iteritems
+        """Returns an iterator of all named result key-value tuples (Python 3.x only)."""
+
+    else:
+        iterkeys = _iterkeys
+        """Returns an iterator of all named result keys (Python 2.x only)."""
+
+        itervalues = _itervalues
+        """Returns an iterator of all named result values (Python 2.x only)."""
+
+        iteritems = _iteritems
+        """Returns an iterator of all named result key-value tuples (Python 2.x only)."""
+
+        def keys( self ):
+            """Returns all named result keys (as a list in Python 2.x, as an iterator in Python 3.x)."""
+            return list(self.iterkeys())
+
+        def values( self ):
+            """Returns all named result values (as a list in Python 2.x, as an iterator in Python 3.x)."""
+            return list(self.itervalues())
+                
+        def items( self ):
+            """Returns all named result key-values (as a list of tuples in Python 2.x, as an iterator in Python 3.x)."""
+            return list(self.iteritems())
+
+    def haskeys( self ):
+        """Since keys() returns an iterator, this method is helpful in bypassing
+           code that looks for the existence of any defined results names."""
+        return bool(self.__tokdict)
+        
+    def pop( self, *args, **kwargs):
+        """
+        Removes and returns item at specified index (default=C{last}).
+        Supports both C{list} and C{dict} semantics for C{pop()}. If passed no
+        argument or an integer argument, it will use C{list} semantics
+        and pop tokens from the list of parsed tokens. If passed a 
+        non-integer argument (most likely a string), it will use C{dict}
+        semantics and pop the corresponding value from any defined 
+        results names. A second default return value argument is 
+        supported, just as in C{dict.pop()}.
+
+        Example::
+            def remove_first(tokens):
+                tokens.pop(0)
+            print(OneOrMore(Word(nums)).parseString("0 123 321")) # -> ['0', '123', '321']
+            print(OneOrMore(Word(nums)).addParseAction(remove_first).parseString("0 123 321")) # -> ['123', '321']
+
+            label = Word(alphas)
+            patt = label("LABEL") + OneOrMore(Word(nums))
+            print(patt.parseString("AAB 123 321").dump())
+
+            # Use pop() in a parse action to remove named result (note that corresponding value is not
+            # removed from list form of results)
+            def remove_LABEL(tokens):
+                tokens.pop("LABEL")
+                return tokens
+            patt.addParseAction(remove_LABEL)
+            print(patt.parseString("AAB 123 321").dump())
+        prints::
+            ['AAB', '123', '321']
+            - LABEL: AAB
+
+            ['AAB', '123', '321']
+        """
+        if not args:
+            args = [-1]
+        for k,v in kwargs.items():
+            if k == 'default':
+                args = (args[0], v)
+            else:
+                raise TypeError("pop() got an unexpected keyword argument '%s'" % k)
+        if (isinstance(args[0], int) or 
+                        len(args) == 1 or 
+                        args[0] in self):
+            index = args[0]
+            ret = self[index]
+            del self[index]
+            return ret
+        else:
+            defaultvalue = args[1]
+            return defaultvalue
+
+    def get(self, key, defaultValue=None):
+        """
+        Returns named result matching the given key, or if there is no
+        such name, then returns the given C{defaultValue} or C{None} if no
+        C{defaultValue} is specified.
+
+        Similar to C{dict.get()}.
+        
+        Example::
+            integer = Word(nums)
+            date_str = integer("year") + '/' + integer("month") + '/' + integer("day")           
+
+            result = date_str.parseString("1999/12/31")
+            print(result.get("year")) # -> '1999'
+            print(result.get("hour", "not specified")) # -> 'not specified'
+            print(result.get("hour")) # -> None
+        """
+        if key in self:
+            return self[key]
+        else:
+            return defaultValue
+
+    def insert( self, index, insStr ):
+        """
+        Inserts new element at location index in the list of parsed tokens.
+        
+        Similar to C{list.insert()}.
+
+        Example::
+            print(OneOrMore(Word(nums)).parseString("0 123 321")) # -> ['0', '123', '321']
+
+            # use a parse action to insert the parse location in the front of the parsed results
+            def insert_locn(locn, tokens):
+                tokens.insert(0, locn)
+            print(OneOrMore(Word(nums)).addParseAction(insert_locn).parseString("0 123 321")) # -> [0, '0', '123', '321']
+        """
+        self.__toklist.insert(index, insStr)
+        # fixup indices in token dictionary
+        for name,occurrences in self.__tokdict.items():
+            for k, (value, position) in enumerate(occurrences):
+                occurrences[k] = _ParseResultsWithOffset(value, position + (position > index))
+
+    def append( self, item ):
+        """
+        Add single element to end of ParseResults list of elements.
+
+        Example::
+            print(OneOrMore(Word(nums)).parseString("0 123 321")) # -> ['0', '123', '321']
+            
+            # use a parse action to compute the sum of the parsed integers, and add it to the end
+            def append_sum(tokens):
+                tokens.append(sum(map(int, tokens)))
+            print(OneOrMore(Word(nums)).addParseAction(append_sum).parseString("0 123 321")) # -> ['0', '123', '321', 444]
+        """
+        self.__toklist.append(item)
+
+    def extend( self, itemseq ):
+        """
+        Add sequence of elements to end of ParseResults list of elements.
+
+        Example::
+            patt = OneOrMore(Word(alphas))
+            
+            # use a parse action to append the reverse of the matched strings, to make a palindrome
+            def make_palindrome(tokens):
+                tokens.extend(reversed([t[::-1] for t in tokens]))
+                return ''.join(tokens)
+            print(patt.addParseAction(make_palindrome).parseString("lskdj sdlkjf lksd")) # -> 'lskdjsdlkjflksddsklfjkldsjdksl'
+        """
+        if isinstance(itemseq, ParseResults):
+            self += itemseq
+        else:
+            self.__toklist.extend(itemseq)
+
+    def clear( self ):
+        """
+        Clear all elements and results names.
+        """
+        del self.__toklist[:]
+        self.__tokdict.clear()
+
+    def __getattr__( self, name ):
+        try:
+            return self[name]
+        except KeyError:
+            return ""
+            
+        if name in self.__tokdict:
+            if name not in self.__accumNames:
+                return self.__tokdict[name][-1][0]
+            else:
+                return ParseResults([ v[0] for v in self.__tokdict[name] ])
+        else:
+            return ""
+
+    def __add__( self, other ):
+        ret = self.copy()
+        ret += other
+        return ret
+
+    def __iadd__( self, other ):
+        if other.__tokdict:
+            offset = len(self.__toklist)
+            addoffset = lambda a: offset if a<0 else a+offset
+            otheritems = other.__tokdict.items()
+            otherdictitems = [(k, _ParseResultsWithOffset(v[0],addoffset(v[1])) )
+                                for (k,vlist) in otheritems for v in vlist]
+            for k,v in otherdictitems:
+                self[k] = v
+                if isinstance(v[0],ParseResults):
+                    v[0].__parent = wkref(self)
+            
+        self.__toklist += other.__toklist
+        self.__accumNames.update( other.__accumNames )
+        return self
+
+    def __radd__(self, other):
+        if isinstance(other,int) and other == 0:
+            # useful for merging many ParseResults using sum() builtin
+            return self.copy()
+        else:
+            # this may raise a TypeError - so be it
+            return other + self
+        
+    def __repr__( self ):
+        return "(%s, %s)" % ( repr( self.__toklist ), repr( self.__tokdict ) )
+
+    def __str__( self ):
+        return '[' + ', '.join(_ustr(i) if isinstance(i, ParseResults) else repr(i) for i in self.__toklist) + ']'
+
+    def _asStringList( self, sep='' ):
+        out = []
+        for item in self.__toklist:
+            if out and sep:
+                out.append(sep)
+            if isinstance( item, ParseResults ):
+                out += item._asStringList()
+            else:
+                out.append( _ustr(item) )
+        return out
+
+    def asList( self ):
+        """
+        Returns the parse results as a nested list of matching tokens, all converted to strings.
+
+        Example::
+            patt = OneOrMore(Word(alphas))
+            result = patt.parseString("sldkj lsdkj sldkj")
+            # even though the result prints in string-like form, it is actually a pyparsing ParseResults
+            print(type(result), result) # -> <class 'pyparsing.ParseResults'> ['sldkj', 'lsdkj', 'sldkj']
+            
+            # Use asList() to create an actual list
+            result_list = result.asList()
+            print(type(result_list), result_list) # -> <class 'list'> ['sldkj', 'lsdkj', 'sldkj']
+        """
+        return [res.asList() if isinstance(res,ParseResults) else res for res in self.__toklist]
+
+    def asDict( self ):
+        """
+        Returns the named parse results as a nested dictionary.
+
+        Example::
+            integer = Word(nums)
+            date_str = integer("year") + '/' + integer("month") + '/' + integer("day")
+            
+            result = date_str.parseString('12/31/1999')
+            print(type(result), repr(result)) # -> <class 'pyparsing.ParseResults'> (['12', '/', '31', '/', '1999'], {'day': [('1999', 4)], 'year': [('12', 0)], 'month': [('31', 2)]})
+            
+            result_dict = result.asDict()
+            print(type(result_dict), repr(result_dict)) # -> <class 'dict'> {'day': '1999', 'year': '12', 'month': '31'}
+
+            # even though a ParseResults supports dict-like access, sometime you just need to have a dict
+            import json
+            print(json.dumps(result)) # -> Exception: TypeError: ... is not JSON serializable
+            print(json.dumps(result.asDict())) # -> {"month": "31", "day": "1999", "year": "12"}
+        """
+        if PY_3:
+            item_fn = self.items
+        else:
+            item_fn = self.iteritems
+            
+        def toItem(obj):
+            if isinstance(obj, ParseResults):
+                if obj.haskeys():
+                    return obj.asDict()
+                else:
+                    return [toItem(v) for v in obj]
+            else:
+                return obj
+                
+        return dict((k,toItem(v)) for k,v in item_fn())
+
+    def copy( self ):
+        """
+        Returns a new copy of a C{ParseResults} object.
+        """
+        ret = ParseResults( self.__toklist )
+        ret.__tokdict = self.__tokdict.copy()
+        ret.__parent = self.__parent
+        ret.__accumNames.update( self.__accumNames )
+        ret.__name = self.__name
+        return ret
+
+    def asXML( self, doctag=None, namedItemsOnly=False, indent="", formatted=True ):
+        """
+        (Deprecated) Returns the parse results as XML. Tags are created for tokens and lists that have defined results names.
+        """
+        nl = "\n"
+        out = []
+        namedItems = dict((v[1],k) for (k,vlist) in self.__tokdict.items()
+                                                            for v in vlist)
+        nextLevelIndent = indent + "  "
+
+        # collapse out indents if formatting is not desired
+        if not formatted:
+            indent = ""
+            nextLevelIndent = ""
+            nl = ""
+
+        selfTag = None
+        if doctag is not None:
+            selfTag = doctag
+        else:
+            if self.__name:
+                selfTag = self.__name
+
+        if not selfTag:
+            if namedItemsOnly:
+                return ""
+            else:
+                selfTag = "ITEM"
+
+        out += [ nl, indent, "<", selfTag, ">" ]
+
+        for i,res in enumerate(self.__toklist):
+            if isinstance(res,ParseResults):
+                if i in namedItems:
+                    out += [ res.asXML(namedItems[i],
+                                        namedItemsOnly and doctag is None,
+                                        nextLevelIndent,
+                                        formatted)]
+                else:
+                    out += [ res.asXML(None,
+                                        namedItemsOnly and doctag is None,
+                                        nextLevelIndent,
+                                        formatted)]
+            else:
+                # individual token, see if there is a name for it
+                resTag = None
+                if i in namedItems:
+                    resTag = namedItems[i]
+                if not resTag:
+                    if namedItemsOnly:
+                        continue
+                    else:
+                        resTag = "ITEM"
+                xmlBodyText = _xml_escape(_ustr(res))
+                out += [ nl, nextLevelIndent, "<", resTag, ">",
+                                                xmlBodyText,
+                                                "</", resTag, ">" ]
+
+        out += [ nl, indent, "</", selfTag, ">" ]
+        return "".join(out)
+
+    def __lookup(self,sub):
+        for k,vlist in self.__tokdict.items():
+            for v,loc in vlist:
+                if sub is v:
+                    return k
+        return None
+
+    def getName(self):
+        r"""
+        Returns the results name for this token expression. Useful when several 
+        different expressions might match at a particular location.
+
+        Example::
+            integer = Word(nums)
+            ssn_expr = Regex(r"\d\d\d-\d\d-\d\d\d\d")
+            house_number_expr = Suppress('#') + Word(nums, alphanums)
+            user_data = (Group(house_number_expr)("house_number") 
+                        | Group(ssn_expr)("ssn")
+                        | Group(integer)("age"))
+            user_info = OneOrMore(user_data)
+            
+            result = user_info.parseString("22 111-22-3333 #221B")
+            for item in result:
+                print(item.getName(), ':', item[0])
+        prints::
+            age : 22
+            ssn : 111-22-3333
+            house_number : 221B
+        """
+        if self.__name:
+            return self.__name
+        elif self.__parent:
+            par = self.__parent()
+            if par:
+                return par.__lookup(self)
+            else:
+                return None
+        elif (len(self) == 1 and
+               len(self.__tokdict) == 1 and
+               next(iter(self.__tokdict.values()))[0][1] in (0,-1)):
+            return next(iter(self.__tokdict.keys()))
+        else:
+            return None
+
+    def dump(self, indent='', depth=0, full=True):
+        """
+        Diagnostic method for listing out the contents of a C{ParseResults}.
+        Accepts an optional C{indent} argument so that this string can be embedded
+        in a nested display of other data.
+
+        Example::
+            integer = Word(nums)
+            date_str = integer("year") + '/' + integer("month") + '/' + integer("day")
+            
+            result = date_str.parseString('12/31/1999')
+            print(result.dump())
+        prints::
+            ['12', '/', '31', '/', '1999']
+            - day: 1999
+            - month: 31
+            - year: 12
+        """
+        out = []
+        NL = '\n'
+        out.append( indent+_ustr(self.asList()) )
+        if full:
+            if self.haskeys():
+                items = sorted((str(k), v) for k,v in self.items())
+                for k,v in items:
+                    if out:
+                        out.append(NL)
+                    out.append( "%s%s- %s: " % (indent,('  '*depth), k) )
+                    if isinstance(v,ParseResults):
+                        if v:
+                            out.append( v.dump(indent,depth+1) )
+                        else:
+                            out.append(_ustr(v))
+                    else:
+                        out.append(repr(v))
+            elif any(isinstance(vv,ParseResults) for vv in self):
+                v = self
+                for i,vv in enumerate(v):
+                    if isinstance(vv,ParseResults):
+                        out.append("\n%s%s[%d]:\n%s%s%s" % (indent,('  '*(depth)),i,indent,('  '*(depth+1)),vv.dump(indent,depth+1) ))
+                    else:
+                        out.append("\n%s%s[%d]:\n%s%s%s" % (indent,('  '*(depth)),i,indent,('  '*(depth+1)),_ustr(vv)))
+            
+        return "".join(out)
+
+    def pprint(self, *args, **kwargs):
+        """
+        Pretty-printer for parsed results as a list, using the C{pprint} module.
+        Accepts additional positional or keyword args as defined for the 
+        C{pprint.pprint} method. (U{http://docs.python.org/3/library/pprint.html#pprint.pprint})
+
+        Example::
+            ident = Word(alphas, alphanums)
+            num = Word(nums)
+            func = Forward()
+            term = ident | num | Group('(' + func + ')')
+            func <<= ident + Group(Optional(delimitedList(term)))
+            result = func.parseString("fna a,b,(fnb c,d,200),100")
+            result.pprint(width=40)
+        prints::
+            ['fna',
+             ['a',
+              'b',
+              ['(', 'fnb', ['c', 'd', '200'], ')'],
+              '100']]
+        """
+        pprint.pprint(self.asList(), *args, **kwargs)
+
+    # add support for pickle protocol
+    def __getstate__(self):
+        return ( self.__toklist,
+                 ( self.__tokdict.copy(),
+                   self.__parent is not None and self.__parent() or None,
+                   self.__accumNames,
+                   self.__name ) )
+
+    def __setstate__(self,state):
+        self.__toklist = state[0]
+        (self.__tokdict,
+         par,
+         inAccumNames,
+         self.__name) = state[1]
+        self.__accumNames = {}
+        self.__accumNames.update(inAccumNames)
+        if par is not None:
+            self.__parent = wkref(par)
+        else:
+            self.__parent = None
+
+    def __getnewargs__(self):
+        return self.__toklist, self.__name, self.__asList, self.__modal
+
+    def __dir__(self):
+        return (dir(type(self)) + list(self.keys()))
+
+MutableMapping.register(ParseResults)
+
+def col (loc,strg):
+    """Returns current column within a string, counting newlines as line separators.
+   The first column is number 1.
+
+   Note: the default parsing behavior is to expand tabs in the input string
+   before starting the parsing process.  See L{I{ParserElement.parseString}<ParserElement.parseString>} for more information
+   on parsing strings containing C{<TAB>}s, and suggested methods to maintain a
+   consistent view of the parsed string, the parse location, and line and column
+   positions within the parsed string.
+   """
+    s = strg
+    return 1 if 0<loc<len(s) and s[loc-1] == '\n' else loc - s.rfind("\n", 0, loc)
+
+def lineno(loc,strg):
+    """Returns current line number within a string, counting newlines as line separators.
+   The first line is number 1.
+
+   Note: the default parsing behavior is to expand tabs in the input string
+   before starting the parsing process.  See L{I{ParserElement.parseString}<ParserElement.parseString>} for more information
+   on parsing strings containing C{<TAB>}s, and suggested methods to maintain a
+   consistent view of the parsed string, the parse location, and line and column
+   positions within the parsed string.
+   """
+    return strg.count("\n",0,loc) + 1
+
+def line( loc, strg ):
+    """Returns the line of text containing loc within a string, counting newlines as line separators.
+       """
+    lastCR = strg.rfind("\n", 0, loc)
+    nextCR = strg.find("\n", loc)
+    if nextCR >= 0:
+        return strg[lastCR+1:nextCR]
+    else:
+        return strg[lastCR+1:]
+
+def _defaultStartDebugAction( instring, loc, expr ):
+    print (("Match " + _ustr(expr) + " at loc " + _ustr(loc) + "(%d,%d)" % ( lineno(loc,instring), col(loc,instring) )))
+
+def _defaultSuccessDebugAction( instring, startloc, endloc, expr, toks ):
+    print ("Matched " + _ustr(expr) + " -> " + str(toks.asList()))
+
+def _defaultExceptionDebugAction( instring, loc, expr, exc ):
+    print ("Exception raised:" + _ustr(exc))
+
+def nullDebugAction(*args):
+    """'Do-nothing' debug action, to suppress debugging output during parsing."""
+    pass
+
+# Only works on Python 3.x - nonlocal is toxic to Python 2 installs
+#~ 'decorator to trim function calls to match the arity of the target'
+#~ def _trim_arity(func, maxargs=3):
+    #~ if func in singleArgBuiltins:
+        #~ return lambda s,l,t: func(t)
+    #~ limit = 0
+    #~ foundArity = False
+    #~ def wrapper(*args):
+        #~ nonlocal limit,foundArity
+        #~ while 1:
+            #~ try:
+                #~ ret = func(*args[limit:])
+                #~ foundArity = True
+                #~ return ret
+            #~ except TypeError:
+                #~ if limit == maxargs or foundArity:
+                    #~ raise
+                #~ limit += 1
+                #~ continue
+    #~ return wrapper
+
+# this version is Python 2.x-3.x cross-compatible
+'decorator to trim function calls to match the arity of the target'
+def _trim_arity(func, maxargs=2):
+    if func in singleArgBuiltins:
+        return lambda s,l,t: func(t)
+    limit = [0]
+    foundArity = [False]
+    
+    # traceback return data structure changed in Py3.5 - normalize back to plain tuples
+    if system_version[:2] >= (3,5):
+        def extract_stack(limit=0):
+            # special handling for Python 3.5.0 - extra deep call stack by 1
+            offset = -3 if system_version == (3,5,0) else -2
+            frame_summary = traceback.extract_stack(limit=-offset+limit-1)[offset]
+            return [frame_summary[:2]]
+        def extract_tb(tb, limit=0):
+            frames = traceback.extract_tb(tb, limit=limit)
+            frame_summary = frames[-1]
+            return [frame_summary[:2]]
+    else:
+        extract_stack = traceback.extract_stack
+        extract_tb = traceback.extract_tb
+    
+    # synthesize what would be returned by traceback.extract_stack at the call to 
+    # user's parse action 'func', so that we don't incur call penalty at parse time
+    
+    LINE_DIFF = 6
+    # IF ANY CODE CHANGES, EVEN JUST COMMENTS OR BLANK LINES, BETWEEN THE NEXT LINE AND 
+    # THE CALL TO FUNC INSIDE WRAPPER, LINE_DIFF MUST BE MODIFIED!!!!
+    this_line = extract_stack(limit=2)[-1]
+    pa_call_line_synth = (this_line[0], this_line[1]+LINE_DIFF)
+
+    def wrapper(*args):
+        while 1:
+            try:
+                ret = func(*args[limit[0]:])
+                foundArity[0] = True
+                return ret
+            except TypeError:
+                # re-raise TypeErrors if they did not come from our arity testing
+                if foundArity[0]:
+                    raise
+                else:
+                    try:
+                        tb = sys.exc_info()[-1]
+                        if not extract_tb(tb, limit=2)[-1][:2] == pa_call_line_synth:
+                            raise
+                    finally:
+                        del tb
+
+                if limit[0] <= maxargs:
+                    limit[0] += 1
+                    continue
+                raise
+
+    # copy func name to wrapper for sensible debug output
+    func_name = "<parse action>"
+    try:
+        func_name = getattr(func, '__name__', 
+                            getattr(func, '__class__').__name__)
+    except Exception:
+        func_name = str(func)
+    wrapper.__name__ = func_name
+
+    return wrapper
+
+class ParserElement(object):
+    """Abstract base level parser element class."""
+    DEFAULT_WHITE_CHARS = " \n\t\r"
+    verbose_stacktrace = False
+
+    @staticmethod
+    def setDefaultWhitespaceChars( chars ):
+        r"""
+        Overrides the default whitespace chars
+
+        Example::
+            # default whitespace chars are space, <TAB> and newline
+            OneOrMore(Word(alphas)).parseString("abc def\nghi jkl")  # -> ['abc', 'def', 'ghi', 'jkl']
+            
+            # change to just treat newline as significant
+            ParserElement.setDefaultWhitespaceChars(" \t")
+            OneOrMore(Word(alphas)).parseString("abc def\nghi jkl")  # -> ['abc', 'def']
+        """
+        ParserElement.DEFAULT_WHITE_CHARS = chars
+
+    @staticmethod
+    def inlineLiteralsUsing(cls):
+        """
+        Set class to be used for inclusion of string literals into a parser.
+        
+        Example::
+            # default literal class used is Literal
+            integer = Word(nums)
+            date_str = integer("year") + '/' + integer("month") + '/' + integer("day")           
+
+            date_str.parseString("1999/12/31")  # -> ['1999', '/', '12', '/', '31']
+
+
+            # change to Suppress
+            ParserElement.inlineLiteralsUsing(Suppress)
+            date_str = integer("year") + '/' + integer("month") + '/' + integer("day")           
+
+            date_str.parseString("1999/12/31")  # -> ['1999', '12', '31']
+        """
+        ParserElement._literalStringClass = cls
+
+    def __init__( self, savelist=False ):
+        self.parseAction = list()
+        self.failAction = None
+        #~ self.name = "<unknown>"  # don't define self.name, let subclasses try/except upcall
+        self.strRepr = None
+        self.resultsName = None
+        self.saveAsList = savelist
+        self.skipWhitespace = True
+        self.whiteChars = ParserElement.DEFAULT_WHITE_CHARS
+        self.copyDefaultWhiteChars = True
+        self.mayReturnEmpty = False # used when checking for left-recursion
+        self.keepTabs = False
+        self.ignoreExprs = list()
+        self.debug = False
+        self.streamlined = False
+        self.mayIndexError = True # used to optimize exception handling for subclasses that don't advance parse index
+        self.errmsg = ""
+        self.modalResults = True # used to mark results names as modal (report only last) or cumulative (list all)
+        self.debugActions = ( None, None, None ) #custom debug actions
+        self.re = None
+        self.callPreparse = True # used to avoid redundant calls to preParse
+        self.callDuringTry = False
+
+    def copy( self ):
+        """
+        Make a copy of this C{ParserElement}.  Useful for defining different parse actions
+        for the same parsing pattern, using copies of the original parse element.
+        
+        Example::
+            integer = Word(nums).setParseAction(lambda toks: int(toks[0]))
+            integerK = integer.copy().addParseAction(lambda toks: toks[0]*1024) + Suppress("K")
+            integerM = integer.copy().addParseAction(lambda toks: toks[0]*1024*1024) + Suppress("M")
+            
+            print(OneOrMore(integerK | integerM | integer).parseString("5K 100 640K 256M"))
+        prints::
+            [5120, 100, 655360, 268435456]
+        Equivalent form of C{expr.copy()} is just C{expr()}::
+            integerM = integer().addParseAction(lambda toks: toks[0]*1024*1024) + Suppress("M")
+        """
+        cpy = copy.copy( self )
+        cpy.parseAction = self.parseAction[:]
+        cpy.ignoreExprs = self.ignoreExprs[:]
+        if self.copyDefaultWhiteChars:
+            cpy.whiteChars = ParserElement.DEFAULT_WHITE_CHARS
+        return cpy
+
+    def setName( self, name ):
+        """
+        Define name for this expression, makes debugging and exception messages clearer.
+        
+        Example::
+            Word(nums).parseString("ABC")  # -> Exception: Expected W:(0123...) (at char 0), (line:1, col:1)
+            Word(nums).setName("integer").parseString("ABC")  # -> Exception: Expected integer (at char 0), (line:1, col:1)
+        """
+        self.name = name
+        self.errmsg = "Expected " + self.name
+        if hasattr(self,"exception"):
+            self.exception.msg = self.errmsg
+        return self
+
+    def setResultsName( self, name, listAllMatches=False ):
+        """
+        Define name for referencing matching tokens as a nested attribute
+        of the returned parse results.
+        NOTE: this returns a *copy* of the original C{ParserElement} object;
+        this is so that the client can define a basic element, such as an
+        integer, and reference it in multiple places with different names.
+
+        You can also set results names using the abbreviated syntax,
+        C{expr("name")} in place of C{expr.setResultsName("name")} - 
+        see L{I{__call__}<__call__>}.
+
+        Example::
+            date_str = (integer.setResultsName("year") + '/' 
+                        + integer.setResultsName("month") + '/' 
+                        + integer.setResultsName("day"))
+
+            # equivalent form:
+            date_str = integer("year") + '/' + integer("month") + '/' + integer("day")
+        """
+        newself = self.copy()
+        if name.endswith("*"):
+            name = name[:-1]
+            listAllMatches=True
+        newself.resultsName = name
+        newself.modalResults = not listAllMatches
+        return newself
+
+    def setBreak(self,breakFlag = True):
+        """Method to invoke the Python pdb debugger when this element is
+           about to be parsed. Set C{breakFlag} to True to enable, False to
+           disable.
+        """
+        if breakFlag:
+            _parseMethod = self._parse
+            def breaker(instring, loc, doActions=True, callPreParse=True):
+                import pdb
+                pdb.set_trace()
+                return _parseMethod( instring, loc, doActions, callPreParse )
+            breaker._originalParseMethod = _parseMethod
+            self._parse = breaker
+        else:
+            if hasattr(self._parse,"_originalParseMethod"):
+                self._parse = self._parse._originalParseMethod
+        return self
+
+    def setParseAction( self, *fns, **kwargs ):
+        """
+        Define one or more actions to perform when successfully matching parse element definition.
+        Parse action fn is a callable method with 0-3 arguments, called as C{fn(s,loc,toks)},
+        C{fn(loc,toks)}, C{fn(toks)}, or just C{fn()}, where:
+         - s   = the original string being parsed (see note below)
+         - loc = the location of the matching substring
+         - toks = a list of the matched tokens, packaged as a C{L{ParseResults}} object
+        If the functions in fns modify the tokens, they can return them as the return
+        value from fn, and the modified list of tokens will replace the original.
+        Otherwise, fn does not need to return any value.
+
+        Optional keyword arguments:
+         - callDuringTry = (default=C{False}) indicate if parse action should be run during lookaheads and alternate testing
+
+        Note: the default parsing behavior is to expand tabs in the input string
+        before starting the parsing process.  See L{I{parseString}<parseString>} for more information
+        on parsing strings containing C{<TAB>}s, and suggested methods to maintain a
+        consistent view of the parsed string, the parse location, and line and column
+        positions within the parsed string.
+        
+        Example::
+            integer = Word(nums)
+            date_str = integer + '/' + integer + '/' + integer
+
+            date_str.parseString("1999/12/31")  # -> ['1999', '/', '12', '/', '31']
+
+            # use parse action to convert to ints at parse time
+            integer = Word(nums).setParseAction(lambda toks: int(toks[0]))
+            date_str = integer + '/' + integer + '/' + integer
+
+            # note that integer fields are now ints, not strings
+            date_str.parseString("1999/12/31")  # -> [1999, '/', 12, '/', 31]
+        """
+        self.parseAction = list(map(_trim_arity, list(fns)))
+        self.callDuringTry = kwargs.get("callDuringTry", False)
+        return self
+
+    def addParseAction( self, *fns, **kwargs ):
+        """
+        Add one or more parse actions to expression's list of parse actions. See L{I{setParseAction}<setParseAction>}.
+        
+        See examples in L{I{copy}<copy>}.
+        """
+        self.parseAction += list(map(_trim_arity, list(fns)))
+        self.callDuringTry = self.callDuringTry or kwargs.get("callDuringTry", False)
+        return self
+
+    def addCondition(self, *fns, **kwargs):
+        """Add a boolean predicate function to expression's list of parse actions. See 
+        L{I{setParseAction}<setParseAction>} for function call signatures. Unlike C{setParseAction}, 
+        functions passed to C{addCondition} need to return boolean success/fail of the condition.
+
+        Optional keyword arguments:
+         - message = define a custom message to be used in the raised exception
+         - fatal   = if True, will raise ParseFatalException to stop parsing immediately; otherwise will raise ParseException
+         
+        Example::
+            integer = Word(nums).setParseAction(lambda toks: int(toks[0]))
+            year_int = integer.copy()
+            year_int.addCondition(lambda toks: toks[0] >= 2000, message="Only support years 2000 and later")
+            date_str = year_int + '/' + integer + '/' + integer
+
+            result = date_str.parseString("1999/12/31")  # -> Exception: Only support years 2000 and later (at char 0), (line:1, col:1)
+        """
+        msg = kwargs.get("message", "failed user-defined condition")
+        exc_type = ParseFatalException if kwargs.get("fatal", False) else ParseException
+        for fn in fns:
+            def pa(s,l,t):
+                if not bool(_trim_arity(fn)(s,l,t)):
+                    raise exc_type(s,l,msg)
+            self.parseAction.append(pa)
+        self.callDuringTry = self.callDuringTry or kwargs.get("callDuringTry", False)
+        return self
+
+    def setFailAction( self, fn ):
+        """Define action to perform if parsing fails at this expression.
+           Fail acton fn is a callable function that takes the arguments
+           C{fn(s,loc,expr,err)} where:
+            - s = string being parsed
+            - loc = location where expression match was attempted and failed
+            - expr = the parse expression that failed
+            - err = the exception thrown
+           The function returns no value.  It may throw C{L{ParseFatalException}}
+           if it is desired to stop parsing immediately."""
+        self.failAction = fn
+        return self
+
+    def _skipIgnorables( self, instring, loc ):
+        exprsFound = True
+        while exprsFound:
+            exprsFound = False
+            for e in self.ignoreExprs:
+                try:
+                    while 1:
+                        loc,dummy = e._parse( instring, loc )
+                        exprsFound = True
+                except ParseException:
+                    pass
+        return loc
+
+    def preParse( self, instring, loc ):
+        if self.ignoreExprs:
+            loc = self._skipIgnorables( instring, loc )
+
+        if self.skipWhitespace:
+            wt = self.whiteChars
+            instrlen = len(instring)
+            while loc < instrlen and instring[loc] in wt:
+                loc += 1
+
+        return loc
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        return loc, []
+
+    def postParse( self, instring, loc, tokenlist ):
+        return tokenlist
+
+    #~ @profile
+    def _parseNoCache( self, instring, loc, doActions=True, callPreParse=True ):
+        debugging = ( self.debug ) #and doActions )
+
+        if debugging or self.failAction:
+            #~ print ("Match",self,"at loc",loc,"(%d,%d)" % ( lineno(loc,instring), col(loc,instring) ))
+            if (self.debugActions[0] ):
+                self.debugActions[0]( instring, loc, self )
+            if callPreParse and self.callPreparse:
+                preloc = self.preParse( instring, loc )
+            else:
+                preloc = loc
+            tokensStart = preloc
+            try:
+                try:
+                    loc,tokens = self.parseImpl( instring, preloc, doActions )
+                except IndexError:
+                    raise ParseException( instring, len(instring), self.errmsg, self )
+            except ParseBaseException as err:
+                #~ print ("Exception raised:", err)
+                if self.debugActions[2]:
+                    self.debugActions[2]( instring, tokensStart, self, err )
+                if self.failAction:
+                    self.failAction( instring, tokensStart, self, err )
+                raise
+        else:
+            if callPreParse and self.callPreparse:
+                preloc = self.preParse( instring, loc )
+            else:
+                preloc = loc
+            tokensStart = preloc
+            if self.mayIndexError or preloc >= len(instring):
+                try:
+                    loc,tokens = self.parseImpl( instring, preloc, doActions )
+                except IndexError:
+                    raise ParseException( instring, len(instring), self.errmsg, self )
+            else:
+                loc,tokens = self.parseImpl( instring, preloc, doActions )
+
+        tokens = self.postParse( instring, loc, tokens )
+
+        retTokens = ParseResults( tokens, self.resultsName, asList=self.saveAsList, modal=self.modalResults )
+        if self.parseAction and (doActions or self.callDuringTry):
+            if debugging:
+                try:
+                    for fn in self.parseAction:
+                        tokens = fn( instring, tokensStart, retTokens )
+                        if tokens is not None:
+                            retTokens = ParseResults( tokens,
+                                                      self.resultsName,
+                                                      asList=self.saveAsList and isinstance(tokens,(ParseResults,list)),
+                                                      modal=self.modalResults )
+                except ParseBaseException as err:
+                    #~ print "Exception raised in user parse action:", err
+                    if (self.debugActions[2] ):
+                        self.debugActions[2]( instring, tokensStart, self, err )
+                    raise
+            else:
+                for fn in self.parseAction:
+                    tokens = fn( instring, tokensStart, retTokens )
+                    if tokens is not None:
+                        retTokens = ParseResults( tokens,
+                                                  self.resultsName,
+                                                  asList=self.saveAsList and isinstance(tokens,(ParseResults,list)),
+                                                  modal=self.modalResults )
+        if debugging:
+            #~ print ("Matched",self,"->",retTokens.asList())
+            if (self.debugActions[1] ):
+                self.debugActions[1]( instring, tokensStart, loc, self, retTokens )
+
+        return loc, retTokens
+
+    def tryParse( self, instring, loc ):
+        try:
+            return self._parse( instring, loc, doActions=False )[0]
+        except ParseFatalException:
+            raise ParseException( instring, loc, self.errmsg, self)
+    
+    def canParseNext(self, instring, loc):
+        try:
+            self.tryParse(instring, loc)
+        except (ParseException, IndexError):
+            return False
+        else:
+            return True
+
+    class _UnboundedCache(object):
+        def __init__(self):
+            cache = {}
+            self.not_in_cache = not_in_cache = object()
+
+            def get(self, key):
+                return cache.get(key, not_in_cache)
+
+            def set(self, key, value):
+                cache[key] = value
+
+            def clear(self):
+                cache.clear()
+                
+            def cache_len(self):
+                return len(cache)
+
+            self.get = types.MethodType(get, self)
+            self.set = types.MethodType(set, self)
+            self.clear = types.MethodType(clear, self)
+            self.__len__ = types.MethodType(cache_len, self)
+
+    if _OrderedDict is not None:
+        class _FifoCache(object):
+            def __init__(self, size):
+                self.not_in_cache = not_in_cache = object()
+
+                cache = _OrderedDict()
+
+                def get(self, key):
+                    return cache.get(key, not_in_cache)
+
+                def set(self, key, value):
+                    cache[key] = value
+                    while len(cache) > size:
+                        try:
+                            cache.popitem(False)
+                        except KeyError:
+                            pass
+
+                def clear(self):
+                    cache.clear()
+
+                def cache_len(self):
+                    return len(cache)
+
+                self.get = types.MethodType(get, self)
+                self.set = types.MethodType(set, self)
+                self.clear = types.MethodType(clear, self)
+                self.__len__ = types.MethodType(cache_len, self)
+
+    else:
+        class _FifoCache(object):
+            def __init__(self, size):
+                self.not_in_cache = not_in_cache = object()
+
+                cache = {}
+                key_fifo = collections.deque([], size)
+
+                def get(self, key):
+                    return cache.get(key, not_in_cache)
+
+                def set(self, key, value):
+                    cache[key] = value
+                    while len(key_fifo) > size:
+                        cache.pop(key_fifo.popleft(), None)
+                    key_fifo.append(key)
+
+                def clear(self):
+                    cache.clear()
+                    key_fifo.clear()
+
+                def cache_len(self):
+                    return len(cache)
+
+                self.get = types.MethodType(get, self)
+                self.set = types.MethodType(set, self)
+                self.clear = types.MethodType(clear, self)
+                self.__len__ = types.MethodType(cache_len, self)
+
+    # argument cache for optimizing repeated calls when backtracking through recursive expressions
+    packrat_cache = {} # this is set later by enabledPackrat(); this is here so that resetCache() doesn't fail
+    packrat_cache_lock = RLock()
+    packrat_cache_stats = [0, 0]
+
+    # this method gets repeatedly called during backtracking with the same arguments -
+    # we can cache these arguments and save ourselves the trouble of re-parsing the contained expression
+    def _parseCache( self, instring, loc, doActions=True, callPreParse=True ):
+        HIT, MISS = 0, 1
+        lookup = (self, instring, loc, callPreParse, doActions)
+        with ParserElement.packrat_cache_lock:
+            cache = ParserElement.packrat_cache
+            value = cache.get(lookup)
+            if value is cache.not_in_cache:
+                ParserElement.packrat_cache_stats[MISS] += 1
+                try:
+                    value = self._parseNoCache(instring, loc, doActions, callPreParse)
+                except ParseBaseException as pe:
+                    # cache a copy of the exception, without the traceback
+                    cache.set(lookup, pe.__class__(*pe.args))
+                    raise
+                else:
+                    cache.set(lookup, (value[0], value[1].copy()))
+                    return value
+            else:
+                ParserElement.packrat_cache_stats[HIT] += 1
+                if isinstance(value, Exception):
+                    raise value
+                return (value[0], value[1].copy())
+
+    _parse = _parseNoCache
+
+    @staticmethod
+    def resetCache():
+        ParserElement.packrat_cache.clear()
+        ParserElement.packrat_cache_stats[:] = [0] * len(ParserElement.packrat_cache_stats)
+
+    _packratEnabled = False
+    @staticmethod
+    def enablePackrat(cache_size_limit=128):
+        """Enables "packrat" parsing, which adds memoizing to the parsing logic.
+           Repeated parse attempts at the same string location (which happens
+           often in many complex grammars) can immediately return a cached value,
+           instead of re-executing parsing/validating code.  Memoizing is done of
+           both valid results and parsing exceptions.
+           
+           Parameters:
+            - cache_size_limit - (default=C{128}) - if an integer value is provided
+              will limit the size of the packrat cache; if None is passed, then
+              the cache size will be unbounded; if 0 is passed, the cache will
+              be effectively disabled.
+            
+           This speedup may break existing programs that use parse actions that
+           have side-effects.  For this reason, packrat parsing is disabled when
+           you first import pyparsing.  To activate the packrat feature, your
+           program must call the class method C{ParserElement.enablePackrat()}.  If
+           your program uses C{psyco} to "compile as you go", you must call
+           C{enablePackrat} before calling C{psyco.full()}.  If you do not do this,
+           Python will crash.  For best results, call C{enablePackrat()} immediately
+           after importing pyparsing.
+           
+           Example::
+               import pyparsing
+               pyparsing.ParserElement.enablePackrat()
+        """
+        if not ParserElement._packratEnabled:
+            ParserElement._packratEnabled = True
+            if cache_size_limit is None:
+                ParserElement.packrat_cache = ParserElement._UnboundedCache()
+            else:
+                ParserElement.packrat_cache = ParserElement._FifoCache(cache_size_limit)
+            ParserElement._parse = ParserElement._parseCache
+
+    def parseString( self, instring, parseAll=False ):
+        """
+        Execute the parse expression with the given string.
+        This is the main interface to the client code, once the complete
+        expression has been built.
+
+        If you want the grammar to require that the entire input string be
+        successfully parsed, then set C{parseAll} to True (equivalent to ending
+        the grammar with C{L{StringEnd()}}).
+
+        Note: C{parseString} implicitly calls C{expandtabs()} on the input string,
+        in order to report proper column numbers in parse actions.
+        If the input string contains tabs and
+        the grammar uses parse actions that use the C{loc} argument to index into the
+        string being parsed, you can ensure you have a consistent view of the input
+        string by:
+         - calling C{parseWithTabs} on your grammar before calling C{parseString}
+           (see L{I{parseWithTabs}<parseWithTabs>})
+         - define your parse action using the full C{(s,loc,toks)} signature, and
+           reference the input string using the parse action's C{s} argument
+         - explictly expand the tabs in your input string before calling
+           C{parseString}
+        
+        Example::
+            Word('a').parseString('aaaaabaaa')  # -> ['aaaaa']
+            Word('a').parseString('aaaaabaaa', parseAll=True)  # -> Exception: Expected end of text
+        """
+        ParserElement.resetCache()
+        if not self.streamlined:
+            self.streamline()
+            #~ self.saveAsList = True
+        for e in self.ignoreExprs:
+            e.streamline()
+        if not self.keepTabs:
+            instring = instring.expandtabs()
+        try:
+            loc, tokens = self._parse( instring, 0 )
+            if parseAll:
+                loc = self.preParse( instring, loc )
+                se = Empty() + StringEnd()
+                se._parse( instring, loc )
+        except ParseBaseException as exc:
+            if ParserElement.verbose_stacktrace:
+                raise
+            else:
+                # catch and re-raise exception from here, clears out pyparsing internal stack trace
+                raise exc
+        else:
+            return tokens
+
+    def scanString( self, instring, maxMatches=_MAX_INT, overlap=False ):
+        """
+        Scan the input string for expression matches.  Each match will return the
+        matching tokens, start location, and end location.  May be called with optional
+        C{maxMatches} argument, to clip scanning after 'n' matches are found.  If
+        C{overlap} is specified, then overlapping matches will be reported.
+
+        Note that the start and end locations are reported relative to the string
+        being parsed.  See L{I{parseString}<parseString>} for more information on parsing
+        strings with embedded tabs.
+
+        Example::
+            source = "sldjf123lsdjjkf345sldkjf879lkjsfd987"
+            print(source)
+            for tokens,start,end in Word(alphas).scanString(source):
+                print(' '*start + '^'*(end-start))
+                print(' '*start + tokens[0])
+        
+        prints::
+        
+            sldjf123lsdjjkf345sldkjf879lkjsfd987
+            ^^^^^
+            sldjf
+                    ^^^^^^^
+                    lsdjjkf
+                              ^^^^^^
+                              sldkjf
+                                       ^^^^^^
+                                       lkjsfd
+        """
+        if not self.streamlined:
+            self.streamline()
+        for e in self.ignoreExprs:
+            e.streamline()
+
+        if not self.keepTabs:
+            instring = _ustr(instring).expandtabs()
+        instrlen = len(instring)
+        loc = 0
+        preparseFn = self.preParse
+        parseFn = self._parse
+        ParserElement.resetCache()
+        matches = 0
+        try:
+            while loc <= instrlen and matches < maxMatches:
+                try:
+                    preloc = preparseFn( instring, loc )
+                    nextLoc,tokens = parseFn( instring, preloc, callPreParse=False )
+                except ParseException:
+                    loc = preloc+1
+                else:
+                    if nextLoc > loc:
+                        matches += 1
+                        yield tokens, preloc, nextLoc
+                        if overlap:
+                            nextloc = preparseFn( instring, loc )
+                            if nextloc > loc:
+                                loc = nextLoc
+                            else:
+                                loc += 1
+                        else:
+                            loc = nextLoc
+                    else:
+                        loc = preloc+1
+        except ParseBaseException as exc:
+            if ParserElement.verbose_stacktrace:
+                raise
+            else:
+                # catch and re-raise exception from here, clears out pyparsing internal stack trace
+                raise exc
+
+    def transformString( self, instring ):
+        """
+        Extension to C{L{scanString}}, to modify matching text with modified tokens that may
+        be returned from a parse action.  To use C{transformString}, define a grammar and
+        attach a parse action to it that modifies the returned token list.
+        Invoking C{transformString()} on a target string will then scan for matches,
+        and replace the matched text patterns according to the logic in the parse
+        action.  C{transformString()} returns the resulting transformed string.
+        
+        Example::
+            wd = Word(alphas)
+            wd.setParseAction(lambda toks: toks[0].title())
+            
+            print(wd.transformString("now is the winter of our discontent made glorious summer by this sun of york."))
+        Prints::
+            Now Is The Winter Of Our Discontent Made Glorious Summer By This Sun Of York.
+        """
+        out = []
+        lastE = 0
+        # force preservation of <TAB>s, to minimize unwanted transformation of string, and to
+        # keep string locs straight between transformString and scanString
+        self.keepTabs = True
+        try:
+            for t,s,e in self.scanString( instring ):
+                out.append( instring[lastE:s] )
+                if t:
+                    if isinstance(t,ParseResults):
+                        out += t.asList()
+                    elif isinstance(t,list):
+                        out += t
+                    else:
+                        out.append(t)
+                lastE = e
+            out.append(instring[lastE:])
+            out = [o for o in out if o]
+            return "".join(map(_ustr,_flatten(out)))
+        except ParseBaseException as exc:
+            if ParserElement.verbose_stacktrace:
+                raise
+            else:
+                # catch and re-raise exception from here, clears out pyparsing internal stack trace
+                raise exc
+
+    def searchString( self, instring, maxMatches=_MAX_INT ):
+        """
+        Another extension to C{L{scanString}}, simplifying the access to the tokens found
+        to match the given parse expression.  May be called with optional
+        C{maxMatches} argument, to clip searching after 'n' matches are found.
+        
+        Example::
+            # a capitalized word starts with an uppercase letter, followed by zero or more lowercase letters
+            cap_word = Word(alphas.upper(), alphas.lower())
+            
+            print(cap_word.searchString("More than Iron, more than Lead, more than Gold I need Electricity"))
+
+            # the sum() builtin can be used to merge results into a single ParseResults object
+            print(sum(cap_word.searchString("More than Iron, more than Lead, more than Gold I need Electricity")))
+        prints::
+            [['More'], ['Iron'], ['Lead'], ['Gold'], ['I'], ['Electricity']]
+            ['More', 'Iron', 'Lead', 'Gold', 'I', 'Electricity']
+        """
+        try:
+            return ParseResults([ t for t,s,e in self.scanString( instring, maxMatches ) ])
+        except ParseBaseException as exc:
+            if ParserElement.verbose_stacktrace:
+                raise
+            else:
+                # catch and re-raise exception from here, clears out pyparsing internal stack trace
+                raise exc
+
+    def split(self, instring, maxsplit=_MAX_INT, includeSeparators=False):
+        """
+        Generator method to split a string using the given expression as a separator.
+        May be called with optional C{maxsplit} argument, to limit the number of splits;
+        and the optional C{includeSeparators} argument (default=C{False}), if the separating
+        matching text should be included in the split results.
+        
+        Example::        
+            punc = oneOf(list(".,;:/-!?"))
+            print(list(punc.split("This, this?, this sentence, is badly punctuated!")))
+        prints::
+            ['This', ' this', '', ' this sentence', ' is badly punctuated', '']
+        """
+        splits = 0
+        last = 0
+        for t,s,e in self.scanString(instring, maxMatches=maxsplit):
+            yield instring[last:s]
+            if includeSeparators:
+                yield t[0]
+            last = e
+        yield instring[last:]
+
+    def __add__(self, other ):
+        """
+        Implementation of + operator - returns C{L{And}}. Adding strings to a ParserElement
+        converts them to L{Literal}s by default.
+        
+        Example::
+            greet = Word(alphas) + "," + Word(alphas) + "!"
+            hello = "Hello, World!"
+            print (hello, "->", greet.parseString(hello))
+        Prints::
+            Hello, World! -> ['Hello', ',', 'World', '!']
+        """
+        if isinstance( other, basestring ):
+            other = ParserElement._literalStringClass( other )
+        if not isinstance( other, ParserElement ):
+            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
+                    SyntaxWarning, stacklevel=2)
+            return None
+        return And( [ self, other ] )
+
+    def __radd__(self, other ):
+        """
+        Implementation of + operator when left operand is not a C{L{ParserElement}}
+        """
+        if isinstance( other, basestring ):
+            other = ParserElement._literalStringClass( other )
+        if not isinstance( other, ParserElement ):
+            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
+                    SyntaxWarning, stacklevel=2)
+            return None
+        return other + self
+
+    def __sub__(self, other):
+        """
+        Implementation of - operator, returns C{L{And}} with error stop
+        """
+        if isinstance( other, basestring ):
+            other = ParserElement._literalStringClass( other )
+        if not isinstance( other, ParserElement ):
+            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
+                    SyntaxWarning, stacklevel=2)
+            return None
+        return self + And._ErrorStop() + other
+
+    def __rsub__(self, other ):
+        """
+        Implementation of - operator when left operand is not a C{L{ParserElement}}
+        """
+        if isinstance( other, basestring ):
+            other = ParserElement._literalStringClass( other )
+        if not isinstance( other, ParserElement ):
+            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
+                    SyntaxWarning, stacklevel=2)
+            return None
+        return other - self
+
+    def __mul__(self,other):
+        """
+        Implementation of * operator, allows use of C{expr * 3} in place of
+        C{expr + expr + expr}.  Expressions may also me multiplied by a 2-integer
+        tuple, similar to C{{min,max}} multipliers in regular expressions.  Tuples
+        may also include C{None} as in:
+         - C{expr*(n,None)} or C{expr*(n,)} is equivalent
+              to C{expr*n + L{ZeroOrMore}(expr)}
+              (read as "at least n instances of C{expr}")
+         - C{expr*(None,n)} is equivalent to C{expr*(0,n)}
+              (read as "0 to n instances of C{expr}")
+         - C{expr*(None,None)} is equivalent to C{L{ZeroOrMore}(expr)}
+         - C{expr*(1,None)} is equivalent to C{L{OneOrMore}(expr)}
+
+        Note that C{expr*(None,n)} does not raise an exception if
+        more than n exprs exist in the input stream; that is,
+        C{expr*(None,n)} does not enforce a maximum number of expr
+        occurrences.  If this behavior is desired, then write
+        C{expr*(None,n) + ~expr}
+        """
+        if isinstance(other,int):
+            minElements, optElements = other,0
+        elif isinstance(other,tuple):
+            other = (other + (None, None))[:2]
+            if other[0] is None:
+                other = (0, other[1])
+            if isinstance(other[0],int) and other[1] is None:
+                if other[0] == 0:
+                    return ZeroOrMore(self)
+                if other[0] == 1:
+                    return OneOrMore(self)
+                else:
+                    return self*other[0] + ZeroOrMore(self)
+            elif isinstance(other[0],int) and isinstance(other[1],int):
+                minElements, optElements = other
+                optElements -= minElements
+            else:
+                raise TypeError("cannot multiply 'ParserElement' and ('%s','%s') objects", type(other[0]),type(other[1]))
+        else:
+            raise TypeError("cannot multiply 'ParserElement' and '%s' objects", type(other))
+
+        if minElements < 0:
+            raise ValueError("cannot multiply ParserElement by negative value")
+        if optElements < 0:
+            raise ValueError("second tuple value must be greater or equal to first tuple value")
+        if minElements == optElements == 0:
+            raise ValueError("cannot multiply ParserElement by 0 or (0,0)")
+
+        if (optElements):
+            def makeOptionalList(n):
+                if n>1:
+                    return Optional(self + makeOptionalList(n-1))
+                else:
+                    return Optional(self)
+            if minElements:
+                if minElements == 1:
+                    ret = self + makeOptionalList(optElements)
+                else:
+                    ret = And([self]*minElements) + makeOptionalList(optElements)
+            else:
+                ret = makeOptionalList(optElements)
+        else:
+            if minElements == 1:
+                ret = self
+            else:
+                ret = And([self]*minElements)
+        return ret
+
+    def __rmul__(self, other):
+        return self.__mul__(other)
+
+    def __or__(self, other ):
+        """
+        Implementation of | operator - returns C{L{MatchFirst}}
+        """
+        if isinstance( other, basestring ):
+            other = ParserElement._literalStringClass( other )
+        if not isinstance( other, ParserElement ):
+            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
+                    SyntaxWarning, stacklevel=2)
+            return None
+        return MatchFirst( [ self, other ] )
+
+    def __ror__(self, other ):
+        """
+        Implementation of | operator when left operand is not a C{L{ParserElement}}
+        """
+        if isinstance( other, basestring ):
+            other = ParserElement._literalStringClass( other )
+        if not isinstance( other, ParserElement ):
+            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
+                    SyntaxWarning, stacklevel=2)
+            return None
+        return other | self
+
+    def __xor__(self, other ):
+        """
+        Implementation of ^ operator - returns C{L{Or}}
+        """
+        if isinstance( other, basestring ):
+            other = ParserElement._literalStringClass( other )
+        if not isinstance( other, ParserElement ):
+            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
+                    SyntaxWarning, stacklevel=2)
+            return None
+        return Or( [ self, other ] )
+
+    def __rxor__(self, other ):
+        """
+        Implementation of ^ operator when left operand is not a C{L{ParserElement}}
+        """
+        if isinstance( other, basestring ):
+            other = ParserElement._literalStringClass( other )
+        if not isinstance( other, ParserElement ):
+            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
+                    SyntaxWarning, stacklevel=2)
+            return None
+        return other ^ self
+
+    def __and__(self, other ):
+        """
+        Implementation of & operator - returns C{L{Each}}
+        """
+        if isinstance( other, basestring ):
+            other = ParserElement._literalStringClass( other )
+        if not isinstance( other, ParserElement ):
+            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
+                    SyntaxWarning, stacklevel=2)
+            return None
+        return Each( [ self, other ] )
+
+    def __rand__(self, other ):
+        """
+        Implementation of & operator when left operand is not a C{L{ParserElement}}
+        """
+        if isinstance( other, basestring ):
+            other = ParserElement._literalStringClass( other )
+        if not isinstance( other, ParserElement ):
+            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
+                    SyntaxWarning, stacklevel=2)
+            return None
+        return other & self
+
+    def __invert__( self ):
+        """
+        Implementation of ~ operator - returns C{L{NotAny}}
+        """
+        return NotAny( self )
+
+    def __call__(self, name=None):
+        """
+        Shortcut for C{L{setResultsName}}, with C{listAllMatches=False}.
+        
+        If C{name} is given with a trailing C{'*'} character, then C{listAllMatches} will be
+        passed as C{True}.
+           
+        If C{name} is omitted, same as calling C{L{copy}}.
+
+        Example::
+            # these are equivalent
+            userdata = Word(alphas).setResultsName("name") + Word(nums+"-").setResultsName("socsecno")
+            userdata = Word(alphas)("name") + Word(nums+"-")("socsecno")             
+        """
+        if name is not None:
+            return self.setResultsName(name)
+        else:
+            return self.copy()
+
+    def suppress( self ):
+        """
+        Suppresses the output of this C{ParserElement}; useful to keep punctuation from
+        cluttering up returned output.
+        """
+        return Suppress( self )
+
+    def leaveWhitespace( self ):
+        """
+        Disables the skipping of whitespace before matching the characters in the
+        C{ParserElement}'s defined pattern.  This is normally only used internally by
+        the pyparsing module, but may be needed in some whitespace-sensitive grammars.
+        """
+        self.skipWhitespace = False
+        return self
+
+    def setWhitespaceChars( self, chars ):
+        """
+        Overrides the default whitespace chars
+        """
+        self.skipWhitespace = True
+        self.whiteChars = chars
+        self.copyDefaultWhiteChars = False
+        return self
+
+    def parseWithTabs( self ):
+        """
+        Overrides default behavior to expand C{<TAB>}s to spaces before parsing the input string.
+        Must be called before C{parseString} when the input grammar contains elements that
+        match C{<TAB>} characters.
+        """
+        self.keepTabs = True
+        return self
+
+    def ignore( self, other ):
+        """
+        Define expression to be ignored (e.g., comments) while doing pattern
+        matching; may be called repeatedly, to define multiple comment or other
+        ignorable patterns.
+        
+        Example::
+            patt = OneOrMore(Word(alphas))
+            patt.parseString('ablaj /* comment */ lskjd') # -> ['ablaj']
+            
+            patt.ignore(cStyleComment)
+            patt.parseString('ablaj /* comment */ lskjd') # -> ['ablaj', 'lskjd']
+        """
+        if isinstance(other, basestring):
+            other = Suppress(other)
+
+        if isinstance( other, Suppress ):
+            if other not in self.ignoreExprs:
+                self.ignoreExprs.append(other)
+        else:
+            self.ignoreExprs.append( Suppress( other.copy() ) )
+        return self
+
+    def setDebugActions( self, startAction, successAction, exceptionAction ):
+        """
+        Enable display of debugging messages while doing pattern matching.
+        """
+        self.debugActions = (startAction or _defaultStartDebugAction,
+                             successAction or _defaultSuccessDebugAction,
+                             exceptionAction or _defaultExceptionDebugAction)
+        self.debug = True
+        return self
+
+    def setDebug( self, flag=True ):
+        """
+        Enable display of debugging messages while doing pattern matching.
+        Set C{flag} to True to enable, False to disable.
+
+        Example::
+            wd = Word(alphas).setName("alphaword")
+            integer = Word(nums).setName("numword")
+            term = wd | integer
+            
+            # turn on debugging for wd
+            wd.setDebug()
+
+            OneOrMore(term).parseString("abc 123 xyz 890")
+        
+        prints::
+            Match alphaword at loc 0(1,1)
+            Matched alphaword -> ['abc']
+            Match alphaword at loc 3(1,4)
+            Exception raised:Expected alphaword (at char 4), (line:1, col:5)
+            Match alphaword at loc 7(1,8)
+            Matched alphaword -> ['xyz']
+            Match alphaword at loc 11(1,12)
+            Exception raised:Expected alphaword (at char 12), (line:1, col:13)
+            Match alphaword at loc 15(1,16)
+            Exception raised:Expected alphaword (at char 15), (line:1, col:16)
+
+        The output shown is that produced by the default debug actions - custom debug actions can be
+        specified using L{setDebugActions}. Prior to attempting
+        to match the C{wd} expression, the debugging message C{"Match <exprname> at loc <n>(<line>,<col>)"}
+        is shown. Then if the parse succeeds, a C{"Matched"} message is shown, or an C{"Exception raised"}
+        message is shown. Also note the use of L{setName} to assign a human-readable name to the expression,
+        which makes debugging and exception messages easier to understand - for instance, the default
+        name created for the C{Word} expression without calling C{setName} is C{"W:(ABCD...)"}.
+        """
+        if flag:
+            self.setDebugActions( _defaultStartDebugAction, _defaultSuccessDebugAction, _defaultExceptionDebugAction )
+        else:
+            self.debug = False
+        return self
+
+    def __str__( self ):
+        return self.name
+
+    def __repr__( self ):
+        return _ustr(self)
+
+    def streamline( self ):
+        self.streamlined = True
+        self.strRepr = None
+        return self
+
+    def checkRecursion( self, parseElementList ):
+        pass
+
+    def validate( self, validateTrace=[] ):
+        """
+        Check defined expressions for valid structure, check for infinite recursive definitions.
+        """
+        self.checkRecursion( [] )
+
+    def parseFile( self, file_or_filename, parseAll=False ):
+        """
+        Execute the parse expression on the given file or filename.
+        If a filename is specified (instead of a file object),
+        the entire file is opened, read, and closed before parsing.
+        """
+        try:
+            file_contents = file_or_filename.read()
+        except AttributeError:
+            with open(file_or_filename, "r") as f:
+                file_contents = f.read()
+        try:
+            return self.parseString(file_contents, parseAll)
+        except ParseBaseException as exc:
+            if ParserElement.verbose_stacktrace:
+                raise
+            else:
+                # catch and re-raise exception from here, clears out pyparsing internal stack trace
+                raise exc
+
+    def __eq__(self,other):
+        if isinstance(other, ParserElement):
+            return self is other or vars(self) == vars(other)
+        elif isinstance(other, basestring):
+            return self.matches(other)
+        else:
+            return super(ParserElement,self)==other
+
+    def __ne__(self,other):
+        return not (self == other)
+
+    def __hash__(self):
+        return hash(id(self))
+
+    def __req__(self,other):
+        return self == other
+
+    def __rne__(self,other):
+        return not (self == other)
+
+    def matches(self, testString, parseAll=True):
+        """
+        Method for quick testing of a parser against a test string. Good for simple 
+        inline microtests of sub expressions while building up larger parser.
+           
+        Parameters:
+         - testString - to test against this expression for a match
+         - parseAll - (default=C{True}) - flag to pass to C{L{parseString}} when running tests
+            
+        Example::
+            expr = Word(nums)
+            assert expr.matches("100")
+        """
+        try:
+            self.parseString(_ustr(testString), parseAll=parseAll)
+            return True
+        except ParseBaseException:
+            return False
+                
+    def runTests(self, tests, parseAll=True, comment='#', fullDump=True, printResults=True, failureTests=False):
+        """
+        Execute the parse expression on a series of test strings, showing each
+        test, the parsed results or where the parse failed. Quick and easy way to
+        run a parse expression against a list of sample strings.
+           
+        Parameters:
+         - tests - a list of separate test strings, or a multiline string of test strings
+         - parseAll - (default=C{True}) - flag to pass to C{L{parseString}} when running tests           
+         - comment - (default=C{'#'}) - expression for indicating embedded comments in the test 
+              string; pass None to disable comment filtering
+         - fullDump - (default=C{True}) - dump results as list followed by results names in nested outline;
+              if False, only dump nested list
+         - printResults - (default=C{True}) prints test output to stdout
+         - failureTests - (default=C{False}) indicates if these tests are expected to fail parsing
+
+        Returns: a (success, results) tuple, where success indicates that all tests succeeded
+        (or failed if C{failureTests} is True), and the results contain a list of lines of each 
+        test's output
+        
+        Example::
+            number_expr = pyparsing_common.number.copy()
+
+            result = number_expr.runTests('''
+                # unsigned integer
+                100
+                # negative integer
+                -100
+                # float with scientific notation
+                6.02e23
+                # integer with scientific notation
+                1e-12
+                ''')
+            print("Success" if result[0] else "Failed!")
+
+            result = number_expr.runTests('''
+                # stray character
+                100Z
+                # missing leading digit before '.'
+                -.100
+                # too many '.'
+                3.14.159
+                ''', failureTests=True)
+            print("Success" if result[0] else "Failed!")
+        prints::
+            # unsigned integer
+            100
+            [100]
+
+            # negative integer
+            -100
+            [-100]
+
+            # float with scientific notation
+            6.02e23
+            [6.02e+23]
+
+            # integer with scientific notation
+            1e-12
+            [1e-12]
+
+            Success
+            
+            # stray character
+            100Z
+               ^
+            FAIL: Expected end of text (at char 3), (line:1, col:4)
+
+            # missing leading digit before '.'
+            -.100
+            ^
+            FAIL: Expected {real number with scientific notation | real number | signed integer} (at char 0), (line:1, col:1)
+
+            # too many '.'
+            3.14.159
+                ^
+            FAIL: Expected end of text (at char 4), (line:1, col:5)
+
+            Success
+
+        Each test string must be on a single line. If you want to test a string that spans multiple
+        lines, create a test like this::
+
+            expr.runTest(r"this is a test\\n of strings that spans \\n 3 lines")
+        
+        (Note that this is a raw string literal, you must include the leading 'r'.)
+        """
+        if isinstance(tests, basestring):
+            tests = list(map(str.strip, tests.rstrip().splitlines()))
+        if isinstance(comment, basestring):
+            comment = Literal(comment)
+        allResults = []
+        comments = []
+        success = True
+        for t in tests:
+            if comment is not None and comment.matches(t, False) or comments and not t:
+                comments.append(t)
+                continue
+            if not t:
+                continue
+            out = ['\n'.join(comments), t]
+            comments = []
+            try:
+                t = t.replace(r'\n','\n')
+                result = self.parseString(t, parseAll=parseAll)
+                out.append(result.dump(full=fullDump))
+                success = success and not failureTests
+            except ParseBaseException as pe:
+                fatal = "(FATAL)" if isinstance(pe, ParseFatalException) else ""
+                if '\n' in t:
+                    out.append(line(pe.loc, t))
+                    out.append(' '*(col(pe.loc,t)-1) + '^' + fatal)
+                else:
+                    out.append(' '*pe.loc + '^' + fatal)
+                out.append("FAIL: " + str(pe))
+                success = success and failureTests
+                result = pe
+            except Exception as exc:
+                out.append("FAIL-EXCEPTION: " + str(exc))
+                success = success and failureTests
+                result = exc
+
+            if printResults:
+                if fullDump:
+                    out.append('')
+                print('\n'.join(out))
+
+            allResults.append((t, result))
+        
+        return success, allResults
+
+        
+class Token(ParserElement):
+    """
+    Abstract C{ParserElement} subclass, for defining atomic matching patterns.
+    """
+    def __init__( self ):
+        super(Token,self).__init__( savelist=False )
+
+
+class Empty(Token):
+    """
+    An empty token, will always match.
+    """
+    def __init__( self ):
+        super(Empty,self).__init__()
+        self.name = "Empty"
+        self.mayReturnEmpty = True
+        self.mayIndexError = False
+
+
+class NoMatch(Token):
+    """
+    A token that will never match.
+    """
+    def __init__( self ):
+        super(NoMatch,self).__init__()
+        self.name = "NoMatch"
+        self.mayReturnEmpty = True
+        self.mayIndexError = False
+        self.errmsg = "Unmatchable token"
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        raise ParseException(instring, loc, self.errmsg, self)
+
+
+class Literal(Token):
+    """
+    Token to exactly match a specified string.
+    
+    Example::
+        Literal('blah').parseString('blah')  # -> ['blah']
+        Literal('blah').parseString('blahfooblah')  # -> ['blah']
+        Literal('blah').parseString('bla')  # -> Exception: Expected "blah"
+    
+    For case-insensitive matching, use L{CaselessLiteral}.
+    
+    For keyword matching (force word break before and after the matched string),
+    use L{Keyword} or L{CaselessKeyword}.
+    """
+    def __init__( self, matchString ):
+        super(Literal,self).__init__()
+        self.match = matchString
+        self.matchLen = len(matchString)
+        try:
+            self.firstMatchChar = matchString[0]
+        except IndexError:
+            warnings.warn("null string passed to Literal; use Empty() instead",
+                            SyntaxWarning, stacklevel=2)
+            self.__class__ = Empty
+        self.name = '"%s"' % _ustr(self.match)
+        self.errmsg = "Expected " + self.name
+        self.mayReturnEmpty = False
+        self.mayIndexError = False
+
+    # Performance tuning: this routine gets called a *lot*
+    # if this is a single character match string  and the first character matches,
+    # short-circuit as quickly as possible, and avoid calling startswith
+    #~ @profile
+    def parseImpl( self, instring, loc, doActions=True ):
+        if (instring[loc] == self.firstMatchChar and
+            (self.matchLen==1 or instring.startswith(self.match,loc)) ):
+            return loc+self.matchLen, self.match
+        raise ParseException(instring, loc, self.errmsg, self)
+_L = Literal
+ParserElement._literalStringClass = Literal
+
+class Keyword(Token):
+    """
+    Token to exactly match a specified string as a keyword, that is, it must be
+    immediately followed by a non-keyword character.  Compare with C{L{Literal}}:
+     - C{Literal("if")} will match the leading C{'if'} in C{'ifAndOnlyIf'}.
+     - C{Keyword("if")} will not; it will only match the leading C{'if'} in C{'if x=1'}, or C{'if(y==2)'}
+    Accepts two optional constructor arguments in addition to the keyword string:
+     - C{identChars} is a string of characters that would be valid identifier characters,
+          defaulting to all alphanumerics + "_" and "$"
+     - C{caseless} allows case-insensitive matching, default is C{False}.
+       
+    Example::
+        Keyword("start").parseString("start")  # -> ['start']
+        Keyword("start").parseString("starting")  # -> Exception
+
+    For case-insensitive matching, use L{CaselessKeyword}.
+    """
+    DEFAULT_KEYWORD_CHARS = alphanums+"_$"
+
+    def __init__( self, matchString, identChars=None, caseless=False ):
+        super(Keyword,self).__init__()
+        if identChars is None:
+            identChars = Keyword.DEFAULT_KEYWORD_CHARS
+        self.match = matchString
+        self.matchLen = len(matchString)
+        try:
+            self.firstMatchChar = matchString[0]
+        except IndexError:
+            warnings.warn("null string passed to Keyword; use Empty() instead",
+                            SyntaxWarning, stacklevel=2)
+        self.name = '"%s"' % self.match
+        self.errmsg = "Expected " + self.name
+        self.mayReturnEmpty = False
+        self.mayIndexError = False
+        self.caseless = caseless
+        if caseless:
+            self.caselessmatch = matchString.upper()
+            identChars = identChars.upper()
+        self.identChars = set(identChars)
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        if self.caseless:
+            if ( (instring[ loc:loc+self.matchLen ].upper() == self.caselessmatch) and
+                 (loc >= len(instring)-self.matchLen or instring[loc+self.matchLen].upper() not in self.identChars) and
+                 (loc == 0 or instring[loc-1].upper() not in self.identChars) ):
+                return loc+self.matchLen, self.match
+        else:
+            if (instring[loc] == self.firstMatchChar and
+                (self.matchLen==1 or instring.startswith(self.match,loc)) and
+                (loc >= len(instring)-self.matchLen or instring[loc+self.matchLen] not in self.identChars) and
+                (loc == 0 or instring[loc-1] not in self.identChars) ):
+                return loc+self.matchLen, self.match
+        raise ParseException(instring, loc, self.errmsg, self)
+
+    def copy(self):
+        c = super(Keyword,self).copy()
+        c.identChars = Keyword.DEFAULT_KEYWORD_CHARS
+        return c
+
+    @staticmethod
+    def setDefaultKeywordChars( chars ):
+        """Overrides the default Keyword chars
+        """
+        Keyword.DEFAULT_KEYWORD_CHARS = chars
+
+class CaselessLiteral(Literal):
+    """
+    Token to match a specified string, ignoring case of letters.
+    Note: the matched results will always be in the case of the given
+    match string, NOT the case of the input text.
+
+    Example::
+        OneOrMore(CaselessLiteral("CMD")).parseString("cmd CMD Cmd10") # -> ['CMD', 'CMD', 'CMD']
+        
+    (Contrast with example for L{CaselessKeyword}.)
+    """
+    def __init__( self, matchString ):
+        super(CaselessLiteral,self).__init__( matchString.upper() )
+        # Preserve the defining literal.
+        self.returnString = matchString
+        self.name = "'%s'" % self.returnString
+        self.errmsg = "Expected " + self.name
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        if instring[ loc:loc+self.matchLen ].upper() == self.match:
+            return loc+self.matchLen, self.returnString
+        raise ParseException(instring, loc, self.errmsg, self)
+
+class CaselessKeyword(Keyword):
+    """
+    Caseless version of L{Keyword}.
+
+    Example::
+        OneOrMore(CaselessKeyword("CMD")).parseString("cmd CMD Cmd10") # -> ['CMD', 'CMD']
+        
+    (Contrast with example for L{CaselessLiteral}.)
+    """
+    def __init__( self, matchString, identChars=None ):
+        super(CaselessKeyword,self).__init__( matchString, identChars, caseless=True )
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        if ( (instring[ loc:loc+self.matchLen ].upper() == self.caselessmatch) and
+             (loc >= len(instring)-self.matchLen or instring[loc+self.matchLen].upper() not in self.identChars) ):
+            return loc+self.matchLen, self.match
+        raise ParseException(instring, loc, self.errmsg, self)
+
+class CloseMatch(Token):
+    """
+    A variation on L{Literal} which matches "close" matches, that is, 
+    strings with at most 'n' mismatching characters. C{CloseMatch} takes parameters:
+     - C{match_string} - string to be matched
+     - C{maxMismatches} - (C{default=1}) maximum number of mismatches allowed to count as a match
+    
+    The results from a successful parse will contain the matched text from the input string and the following named results:
+     - C{mismatches} - a list of the positions within the match_string where mismatches were found
+     - C{original} - the original match_string used to compare against the input string
+    
+    If C{mismatches} is an empty list, then the match was an exact match.
+    
+    Example::
+        patt = CloseMatch("ATCATCGAATGGA")
+        patt.parseString("ATCATCGAAXGGA") # -> (['ATCATCGAAXGGA'], {'mismatches': [[9]], 'original': ['ATCATCGAATGGA']})
+        patt.parseString("ATCAXCGAAXGGA") # -> Exception: Expected 'ATCATCGAATGGA' (with up to 1 mismatches) (at char 0), (line:1, col:1)
+
+        # exact match
+        patt.parseString("ATCATCGAATGGA") # -> (['ATCATCGAATGGA'], {'mismatches': [[]], 'original': ['ATCATCGAATGGA']})
+
+        # close match allowing up to 2 mismatches
+        patt = CloseMatch("ATCATCGAATGGA", maxMismatches=2)
+        patt.parseString("ATCAXCGAAXGGA") # -> (['ATCAXCGAAXGGA'], {'mismatches': [[4, 9]], 'original': ['ATCATCGAATGGA']})
+    """
+    def __init__(self, match_string, maxMismatches=1):
+        super(CloseMatch,self).__init__()
+        self.name = match_string
+        self.match_string = match_string
+        self.maxMismatches = maxMismatches
+        self.errmsg = "Expected %r (with up to %d mismatches)" % (self.match_string, self.maxMismatches)
+        self.mayIndexError = False
+        self.mayReturnEmpty = False
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        start = loc
+        instrlen = len(instring)
+        maxloc = start + len(self.match_string)
+
+        if maxloc <= instrlen:
+            match_string = self.match_string
+            match_stringloc = 0
+            mismatches = []
+            maxMismatches = self.maxMismatches
+
+            for match_stringloc,s_m in enumerate(zip(instring[loc:maxloc], self.match_string)):
+                src,mat = s_m
+                if src != mat:
+                    mismatches.append(match_stringloc)
+                    if len(mismatches) > maxMismatches:
+                        break
+            else:
+                loc = match_stringloc + 1
+                results = ParseResults([instring[start:loc]])
+                results['original'] = self.match_string
+                results['mismatches'] = mismatches
+                return loc, results
+
+        raise ParseException(instring, loc, self.errmsg, self)
+
+
+class Word(Token):
+    """
+    Token for matching words composed of allowed character sets.
+    Defined with string containing all allowed initial characters,
+    an optional string containing allowed body characters (if omitted,
+    defaults to the initial character set), and an optional minimum,
+    maximum, and/or exact length.  The default value for C{min} is 1 (a
+    minimum value < 1 is not valid); the default values for C{max} and C{exact}
+    are 0, meaning no maximum or exact length restriction. An optional
+    C{excludeChars} parameter can list characters that might be found in 
+    the input C{bodyChars} string; useful to define a word of all printables
+    except for one or two characters, for instance.
+    
+    L{srange} is useful for defining custom character set strings for defining 
+    C{Word} expressions, using range notation from regular expression character sets.
+    
+    A common mistake is to use C{Word} to match a specific literal string, as in 
+    C{Word("Address")}. Remember that C{Word} uses the string argument to define
+    I{sets} of matchable characters. This expression would match "Add", "AAA",
+    "dAred", or any other word made up of the characters 'A', 'd', 'r', 'e', and 's'.
+    To match an exact literal string, use L{Literal} or L{Keyword}.
+
+    pyparsing includes helper strings for building Words:
+     - L{alphas}
+     - L{nums}
+     - L{alphanums}
+     - L{hexnums}
+     - L{alphas8bit} (alphabetic characters in ASCII range 128-255 - accented, tilded, umlauted, etc.)
+     - L{punc8bit} (non-alphabetic characters in ASCII range 128-255 - currency, symbols, superscripts, diacriticals, etc.)
+     - L{printables} (any non-whitespace character)
+
+    Example::
+        # a word composed of digits
+        integer = Word(nums) # equivalent to Word("0123456789") or Word(srange("0-9"))
+        
+        # a word with a leading capital, and zero or more lowercase
+        capital_word = Word(alphas.upper(), alphas.lower())
+
+        # hostnames are alphanumeric, with leading alpha, and '-'
+        hostname = Word(alphas, alphanums+'-')
+        
+        # roman numeral (not a strict parser, accepts invalid mix of characters)
+        roman = Word("IVXLCDM")
+        
+        # any string of non-whitespace characters, except for ','
+        csv_value = Word(printables, excludeChars=",")
+    """
+    def __init__( self, initChars, bodyChars=None, min=1, max=0, exact=0, asKeyword=False, excludeChars=None ):
+        super(Word,self).__init__()
+        if excludeChars:
+            initChars = ''.join(c for c in initChars if c not in excludeChars)
+            if bodyChars:
+                bodyChars = ''.join(c for c in bodyChars if c not in excludeChars)
+        self.initCharsOrig = initChars
+        self.initChars = set(initChars)
+        if bodyChars :
+            self.bodyCharsOrig = bodyChars
+            self.bodyChars = set(bodyChars)
+        else:
+            self.bodyCharsOrig = initChars
+            self.bodyChars = set(initChars)
+
+        self.maxSpecified = max > 0
+
+        if min < 1:
+            raise ValueError("cannot specify a minimum length < 1; use Optional(Word()) if zero-length word is permitted")
+
+        self.minLen = min
+
+        if max > 0:
+            self.maxLen = max
+        else:
+            self.maxLen = _MAX_INT
+
+        if exact > 0:
+            self.maxLen = exact
+            self.minLen = exact
+
+        self.name = _ustr(self)
+        self.errmsg = "Expected " + self.name
+        self.mayIndexError = False
+        self.asKeyword = asKeyword
+
+        if ' ' not in self.initCharsOrig+self.bodyCharsOrig and (min==1 and max==0 and exact==0):
+            if self.bodyCharsOrig == self.initCharsOrig:
+                self.reString = "[%s]+" % _escapeRegexRangeChars(self.initCharsOrig)
+            elif len(self.initCharsOrig) == 1:
+                self.reString = "%s[%s]*" % \
+                                      (re.escape(self.initCharsOrig),
+                                      _escapeRegexRangeChars(self.bodyCharsOrig),)
+            else:
+                self.reString = "[%s][%s]*" % \
+                                      (_escapeRegexRangeChars(self.initCharsOrig),
+                                      _escapeRegexRangeChars(self.bodyCharsOrig),)
+            if self.asKeyword:
+                self.reString = r"\b"+self.reString+r"\b"
+            try:
+                self.re = re.compile( self.reString )
+            except Exception:
+                self.re = None
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        if self.re:
+            result = self.re.match(instring,loc)
+            if not result:
+                raise ParseException(instring, loc, self.errmsg, self)
+
+            loc = result.end()
+            return loc, result.group()
+
+        if not(instring[ loc ] in self.initChars):
+            raise ParseException(instring, loc, self.errmsg, self)
+
+        start = loc
+        loc += 1
+        instrlen = len(instring)
+        bodychars = self.bodyChars
+        maxloc = start + self.maxLen
+        maxloc = min( maxloc, instrlen )
+        while loc < maxloc and instring[loc] in bodychars:
+            loc += 1
+
+        throwException = False
+        if loc - start < self.minLen:
+            throwException = True
+        if self.maxSpecified and loc < instrlen and instring[loc] in bodychars:
+            throwException = True
+        if self.asKeyword:
+            if (start>0 and instring[start-1] in bodychars) or (loc<instrlen and instring[loc] in bodychars):
+                throwException = True
+
+        if throwException:
+            raise ParseException(instring, loc, self.errmsg, self)
+
+        return loc, instring[start:loc]
+
+    def __str__( self ):
+        try:
+            return super(Word,self).__str__()
+        except Exception:
+            pass
+
+
+        if self.strRepr is None:
+
+            def charsAsStr(s):
+                if len(s)>4:
+                    return s[:4]+"..."
+                else:
+                    return s
+
+            if ( self.initCharsOrig != self.bodyCharsOrig ):
+                self.strRepr = "W:(%s,%s)" % ( charsAsStr(self.initCharsOrig), charsAsStr(self.bodyCharsOrig) )
+            else:
+                self.strRepr = "W:(%s)" % charsAsStr(self.initCharsOrig)
+
+        return self.strRepr
+
+
+class Regex(Token):
+    r"""
+    Token for matching strings that match a given regular expression.
+    Defined with string specifying the regular expression in a form recognized by the inbuilt Python re module.
+    If the given regex contains named groups (defined using C{(?P<name>...)}), these will be preserved as 
+    named parse results.
+
+    Example::
+        realnum = Regex(r"[+-]?\d+\.\d*")
+        date = Regex(r'(?P<year>\d{4})-(?P<month>\d\d?)-(?P<day>\d\d?)')
+        # ref: http://stackoverflow.com/questions/267399/how-do-you-match-only-valid-roman-numerals-with-a-regular-expression
+        roman = Regex(r"M{0,4}(CM|CD|D?C{0,3})(XC|XL|L?X{0,3})(IX|IV|V?I{0,3})")
+    """
+    compiledREtype = type(re.compile("[A-Z]"))
+    def __init__( self, pattern, flags=0):
+        """The parameters C{pattern} and C{flags} are passed to the C{re.compile()} function as-is. See the Python C{re} module for an explanation of the acceptable patterns and flags."""
+        super(Regex,self).__init__()
+
+        if isinstance(pattern, basestring):
+            if not pattern:
+                warnings.warn("null string passed to Regex; use Empty() instead",
+                        SyntaxWarning, stacklevel=2)
+
+            self.pattern = pattern
+            self.flags = flags
+
+            try:
+                self.re = re.compile(self.pattern, self.flags)
+                self.reString = self.pattern
+            except sre_constants.error:
+                warnings.warn("invalid pattern (%s) passed to Regex" % pattern,
+                    SyntaxWarning, stacklevel=2)
+                raise
+
+        elif isinstance(pattern, Regex.compiledREtype):
+            self.re = pattern
+            self.pattern = \
+            self.reString = str(pattern)
+            self.flags = flags
+            
+        else:
+            raise ValueError("Regex may only be constructed with a string or a compiled RE object")
+
+        self.name = _ustr(self)
+        self.errmsg = "Expected " + self.name
+        self.mayIndexError = False
+        self.mayReturnEmpty = True
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        result = self.re.match(instring,loc)
+        if not result:
+            raise ParseException(instring, loc, self.errmsg, self)
+
+        loc = result.end()
+        d = result.groupdict()
+        ret = ParseResults(result.group())
+        if d:
+            for k in d:
+                ret[k] = d[k]
+        return loc,ret
+
+    def __str__( self ):
+        try:
+            return super(Regex,self).__str__()
+        except Exception:
+            pass
+
+        if self.strRepr is None:
+            self.strRepr = "Re:(%s)" % repr(self.pattern)
+
+        return self.strRepr
+
+
+class QuotedString(Token):
+    r"""
+    Token for matching strings that are delimited by quoting characters.
+    
+    Defined with the following parameters:
+        - quoteChar - string of one or more characters defining the quote delimiting string
+        - escChar - character to escape quotes, typically backslash (default=C{None})
+        - escQuote - special quote sequence to escape an embedded quote string (such as SQL's "" to escape an embedded ") (default=C{None})
+        - multiline - boolean indicating whether quotes can span multiple lines (default=C{False})
+        - unquoteResults - boolean indicating whether the matched text should be unquoted (default=C{True})
+        - endQuoteChar - string of one or more characters defining the end of the quote delimited string (default=C{None} => same as quoteChar)
+        - convertWhitespaceEscapes - convert escaped whitespace (C{'\t'}, C{'\n'}, etc.) to actual whitespace (default=C{True})
+
+    Example::
+        qs = QuotedString('"')
+        print(qs.searchString('lsjdf "This is the quote" sldjf'))
+        complex_qs = QuotedString('{{', endQuoteChar='}}')
+        print(complex_qs.searchString('lsjdf {{This is the "quote"}} sldjf'))
+        sql_qs = QuotedString('"', escQuote='""')
+        print(sql_qs.searchString('lsjdf "This is the quote with ""embedded"" quotes" sldjf'))
+    prints::
+        [['This is the quote']]
+        [['This is the "quote"']]
+        [['This is the quote with "embedded" quotes']]
+    """
+    def __init__( self, quoteChar, escChar=None, escQuote=None, multiline=False, unquoteResults=True, endQuoteChar=None, convertWhitespaceEscapes=True):
+        super(QuotedString,self).__init__()
+
+        # remove white space from quote chars - wont work anyway
+        quoteChar = quoteChar.strip()
+        if not quoteChar:
+            warnings.warn("quoteChar cannot be the empty string",SyntaxWarning,stacklevel=2)
+            raise SyntaxError()
+
+        if endQuoteChar is None:
+            endQuoteChar = quoteChar
+        else:
+            endQuoteChar = endQuoteChar.strip()
+            if not endQuoteChar:
+                warnings.warn("endQuoteChar cannot be the empty string",SyntaxWarning,stacklevel=2)
+                raise SyntaxError()
+
+        self.quoteChar = quoteChar
+        self.quoteCharLen = len(quoteChar)
+        self.firstQuoteChar = quoteChar[0]
+        self.endQuoteChar = endQuoteChar
+        self.endQuoteCharLen = len(endQuoteChar)
+        self.escChar = escChar
+        self.escQuote = escQuote
+        self.unquoteResults = unquoteResults
+        self.convertWhitespaceEscapes = convertWhitespaceEscapes
+
+        if multiline:
+            self.flags = re.MULTILINE | re.DOTALL
+            self.pattern = r'%s(?:[^%s%s]' % \
+                ( re.escape(self.quoteChar),
+                  _escapeRegexRangeChars(self.endQuoteChar[0]),
+                  (escChar is not None and _escapeRegexRangeChars(escChar) or '') )
+        else:
+            self.flags = 0
+            self.pattern = r'%s(?:[^%s\n\r%s]' % \
+                ( re.escape(self.quoteChar),
+                  _escapeRegexRangeChars(self.endQuoteChar[0]),
+                  (escChar is not None and _escapeRegexRangeChars(escChar) or '') )
+        if len(self.endQuoteChar) > 1:
+            self.pattern += (
+                '|(?:' + ')|(?:'.join("%s[^%s]" % (re.escape(self.endQuoteChar[:i]),
+                                               _escapeRegexRangeChars(self.endQuoteChar[i]))
+                                    for i in range(len(self.endQuoteChar)-1,0,-1)) + ')'
+                )
+        if escQuote:
+            self.pattern += (r'|(?:%s)' % re.escape(escQuote))
+        if escChar:
+            self.pattern += (r'|(?:%s.)' % re.escape(escChar))
+            self.escCharReplacePattern = re.escape(self.escChar)+"(.)"
+        self.pattern += (r')*%s' % re.escape(self.endQuoteChar))
+
+        try:
+            self.re = re.compile(self.pattern, self.flags)
+            self.reString = self.pattern
+        except sre_constants.error:
+            warnings.warn("invalid pattern (%s) passed to Regex" % self.pattern,
+                SyntaxWarning, stacklevel=2)
+            raise
+
+        self.name = _ustr(self)
+        self.errmsg = "Expected " + self.name
+        self.mayIndexError = False
+        self.mayReturnEmpty = True
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        result = instring[loc] == self.firstQuoteChar and self.re.match(instring,loc) or None
+        if not result:
+            raise ParseException(instring, loc, self.errmsg, self)
+
+        loc = result.end()
+        ret = result.group()
+
+        if self.unquoteResults:
+
+            # strip off quotes
+            ret = ret[self.quoteCharLen:-self.endQuoteCharLen]
+
+            if isinstance(ret,basestring):
+                # replace escaped whitespace
+                if '\\' in ret and self.convertWhitespaceEscapes:
+                    ws_map = {
+                        r'\t' : '\t',
+                        r'\n' : '\n',
+                        r'\f' : '\f',
+                        r'\r' : '\r',
+                    }
+                    for wslit,wschar in ws_map.items():
+                        ret = ret.replace(wslit, wschar)
+
+                # replace escaped characters
+                if self.escChar:
+                    ret = re.sub(self.escCharReplacePattern, r"\g<1>", ret)
+
+                # replace escaped quotes
+                if self.escQuote:
+                    ret = ret.replace(self.escQuote, self.endQuoteChar)
+
+        return loc, ret
+
+    def __str__( self ):
+        try:
+            return super(QuotedString,self).__str__()
+        except Exception:
+            pass
+
+        if self.strRepr is None:
+            self.strRepr = "quoted string, starting with %s ending with %s" % (self.quoteChar, self.endQuoteChar)
+
+        return self.strRepr
+
+
+class CharsNotIn(Token):
+    """
+    Token for matching words composed of characters I{not} in a given set (will
+    include whitespace in matched characters if not listed in the provided exclusion set - see example).
+    Defined with string containing all disallowed characters, and an optional
+    minimum, maximum, and/or exact length.  The default value for C{min} is 1 (a
+    minimum value < 1 is not valid); the default values for C{max} and C{exact}
+    are 0, meaning no maximum or exact length restriction.
+
+    Example::
+        # define a comma-separated-value as anything that is not a ','
+        csv_value = CharsNotIn(',')
+        print(delimitedList(csv_value).parseString("dkls,lsdkjf,s12 34,@!#,213"))
+    prints::
+        ['dkls', 'lsdkjf', 's12 34', '@!#', '213']
+    """
+    def __init__( self, notChars, min=1, max=0, exact=0 ):
+        super(CharsNotIn,self).__init__()
+        self.skipWhitespace = False
+        self.notChars = notChars
+
+        if min < 1:
+            raise ValueError("cannot specify a minimum length < 1; use Optional(CharsNotIn()) if zero-length char group is permitted")
+
+        self.minLen = min
+
+        if max > 0:
+            self.maxLen = max
+        else:
+            self.maxLen = _MAX_INT
+
+        if exact > 0:
+            self.maxLen = exact
+            self.minLen = exact
+
+        self.name = _ustr(self)
+        self.errmsg = "Expected " + self.name
+        self.mayReturnEmpty = ( self.minLen == 0 )
+        self.mayIndexError = False
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        if instring[loc] in self.notChars:
+            raise ParseException(instring, loc, self.errmsg, self)
+
+        start = loc
+        loc += 1
+        notchars = self.notChars
+        maxlen = min( start+self.maxLen, len(instring) )
+        while loc < maxlen and \
+              (instring[loc] not in notchars):
+            loc += 1
+
+        if loc - start < self.minLen:
+            raise ParseException(instring, loc, self.errmsg, self)
+
+        return loc, instring[start:loc]
+
+    def __str__( self ):
+        try:
+            return super(CharsNotIn, self).__str__()
+        except Exception:
+            pass
+
+        if self.strRepr is None:
+            if len(self.notChars) > 4:
+                self.strRepr = "!W:(%s...)" % self.notChars[:4]
+            else:
+                self.strRepr = "!W:(%s)" % self.notChars
+
+        return self.strRepr
+
+class White(Token):
+    """
+    Special matching class for matching whitespace.  Normally, whitespace is ignored
+    by pyparsing grammars.  This class is included when some whitespace structures
+    are significant.  Define with a string containing the whitespace characters to be
+    matched; default is C{" \\t\\r\\n"}.  Also takes optional C{min}, C{max}, and C{exact} arguments,
+    as defined for the C{L{Word}} class.
+    """
+    whiteStrs = {
+        " " : "<SPC>",
+        "\t": "<TAB>",
+        "\n": "<LF>",
+        "\r": "<CR>",
+        "\f": "<FF>",
+        }
+    def __init__(self, ws=" \t\r\n", min=1, max=0, exact=0):
+        super(White,self).__init__()
+        self.matchWhite = ws
+        self.setWhitespaceChars( "".join(c for c in self.whiteChars if c not in self.matchWhite) )
+        #~ self.leaveWhitespace()
+        self.name = ("".join(White.whiteStrs[c] for c in self.matchWhite))
+        self.mayReturnEmpty = True
+        self.errmsg = "Expected " + self.name
+
+        self.minLen = min
+
+        if max > 0:
+            self.maxLen = max
+        else:
+            self.maxLen = _MAX_INT
+
+        if exact > 0:
+            self.maxLen = exact
+            self.minLen = exact
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        if not(instring[ loc ] in self.matchWhite):
+            raise ParseException(instring, loc, self.errmsg, self)
+        start = loc
+        loc += 1
+        maxloc = start + self.maxLen
+        maxloc = min( maxloc, len(instring) )
+        while loc < maxloc and instring[loc] in self.matchWhite:
+            loc += 1
+
+        if loc - start < self.minLen:
+            raise ParseException(instring, loc, self.errmsg, self)
+
+        return loc, instring[start:loc]
+
+
+class _PositionToken(Token):
+    def __init__( self ):
+        super(_PositionToken,self).__init__()
+        self.name=self.__class__.__name__
+        self.mayReturnEmpty = True
+        self.mayIndexError = False
+
+class GoToColumn(_PositionToken):
+    """
+    Token to advance to a specific column of input text; useful for tabular report scraping.
+    """
+    def __init__( self, colno ):
+        super(GoToColumn,self).__init__()
+        self.col = colno
+
+    def preParse( self, instring, loc ):
+        if col(loc,instring) != self.col:
+            instrlen = len(instring)
+            if self.ignoreExprs:
+                loc = self._skipIgnorables( instring, loc )
+            while loc < instrlen and instring[loc].isspace() and col( loc, instring ) != self.col :
+                loc += 1
+        return loc
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        thiscol = col( loc, instring )
+        if thiscol > self.col:
+            raise ParseException( instring, loc, "Text not in expected column", self )
+        newloc = loc + self.col - thiscol
+        ret = instring[ loc: newloc ]
+        return newloc, ret
+
+
+class LineStart(_PositionToken):
+    """
+    Matches if current position is at the beginning of a line within the parse string
+    
+    Example::
+    
+        test = '''\
+        AAA this line
+        AAA and this line
+          AAA but not this one
+        B AAA and definitely not this one
+        '''
+
+        for t in (LineStart() + 'AAA' + restOfLine).searchString(test):
+            print(t)
+    
+    Prints::
+        ['AAA', ' this line']
+        ['AAA', ' and this line']    
+
+    """
+    def __init__( self ):
+        super(LineStart,self).__init__()
+        self.errmsg = "Expected start of line"
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        if col(loc, instring) == 1:
+            return loc, []
+        raise ParseException(instring, loc, self.errmsg, self)
+
+class LineEnd(_PositionToken):
+    """
+    Matches if current position is at the end of a line within the parse string
+    """
+    def __init__( self ):
+        super(LineEnd,self).__init__()
+        self.setWhitespaceChars( ParserElement.DEFAULT_WHITE_CHARS.replace("\n","") )
+        self.errmsg = "Expected end of line"
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        if loc<len(instring):
+            if instring[loc] == "\n":
+                return loc+1, "\n"
+            else:
+                raise ParseException(instring, loc, self.errmsg, self)
+        elif loc == len(instring):
+            return loc+1, []
+        else:
+            raise ParseException(instring, loc, self.errmsg, self)
+
+class StringStart(_PositionToken):
+    """
+    Matches if current position is at the beginning of the parse string
+    """
+    def __init__( self ):
+        super(StringStart,self).__init__()
+        self.errmsg = "Expected start of text"
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        if loc != 0:
+            # see if entire string up to here is just whitespace and ignoreables
+            if loc != self.preParse( instring, 0 ):
+                raise ParseException(instring, loc, self.errmsg, self)
+        return loc, []
+
+class StringEnd(_PositionToken):
+    """
+    Matches if current position is at the end of the parse string
+    """
+    def __init__( self ):
+        super(StringEnd,self).__init__()
+        self.errmsg = "Expected end of text"
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        if loc < len(instring):
+            raise ParseException(instring, loc, self.errmsg, self)
+        elif loc == len(instring):
+            return loc+1, []
+        elif loc > len(instring):
+            return loc, []
+        else:
+            raise ParseException(instring, loc, self.errmsg, self)
+
+class WordStart(_PositionToken):
+    """
+    Matches if the current position is at the beginning of a Word, and
+    is not preceded by any character in a given set of C{wordChars}
+    (default=C{printables}). To emulate the C{\b} behavior of regular expressions,
+    use C{WordStart(alphanums)}. C{WordStart} will also match at the beginning of
+    the string being parsed, or at the beginning of a line.
+    """
+    def __init__(self, wordChars = printables):
+        super(WordStart,self).__init__()
+        self.wordChars = set(wordChars)
+        self.errmsg = "Not at the start of a word"
+
+    def parseImpl(self, instring, loc, doActions=True ):
+        if loc != 0:
+            if (instring[loc-1] in self.wordChars or
+                instring[loc] not in self.wordChars):
+                raise ParseException(instring, loc, self.errmsg, self)
+        return loc, []
+
+class WordEnd(_PositionToken):
+    """
+    Matches if the current position is at the end of a Word, and
+    is not followed by any character in a given set of C{wordChars}
+    (default=C{printables}). To emulate the C{\b} behavior of regular expressions,
+    use C{WordEnd(alphanums)}. C{WordEnd} will also match at the end of
+    the string being parsed, or at the end of a line.
+    """
+    def __init__(self, wordChars = printables):
+        super(WordEnd,self).__init__()
+        self.wordChars = set(wordChars)
+        self.skipWhitespace = False
+        self.errmsg = "Not at the end of a word"
+
+    def parseImpl(self, instring, loc, doActions=True ):
+        instrlen = len(instring)
+        if instrlen>0 and loc<instrlen:
+            if (instring[loc] in self.wordChars or
+                instring[loc-1] not in self.wordChars):
+                raise ParseException(instring, loc, self.errmsg, self)
+        return loc, []
+
+
+class ParseExpression(ParserElement):
+    """
+    Abstract subclass of ParserElement, for combining and post-processing parsed tokens.
+    """
+    def __init__( self, exprs, savelist = False ):
+        super(ParseExpression,self).__init__(savelist)
+        if isinstance( exprs, _generatorType ):
+            exprs = list(exprs)
+
+        if isinstance( exprs, basestring ):
+            self.exprs = [ ParserElement._literalStringClass( exprs ) ]
+        elif isinstance( exprs, Iterable ):
+            exprs = list(exprs)
+            # if sequence of strings provided, wrap with Literal
+            if all(isinstance(expr, basestring) for expr in exprs):
+                exprs = map(ParserElement._literalStringClass, exprs)
+            self.exprs = list(exprs)
+        else:
+            try:
+                self.exprs = list( exprs )
+            except TypeError:
+                self.exprs = [ exprs ]
+        self.callPreparse = False
+
+    def __getitem__( self, i ):
+        return self.exprs[i]
+
+    def append( self, other ):
+        self.exprs.append( other )
+        self.strRepr = None
+        return self
+
+    def leaveWhitespace( self ):
+        """Extends C{leaveWhitespace} defined in base class, and also invokes C{leaveWhitespace} on
+           all contained expressions."""
+        self.skipWhitespace = False
+        self.exprs = [ e.copy() for e in self.exprs ]
+        for e in self.exprs:
+            e.leaveWhitespace()
+        return self
+
+    def ignore( self, other ):
+        if isinstance( other, Suppress ):
+            if other not in self.ignoreExprs:
+                super( ParseExpression, self).ignore( other )
+                for e in self.exprs:
+                    e.ignore( self.ignoreExprs[-1] )
+        else:
+            super( ParseExpression, self).ignore( other )
+            for e in self.exprs:
+                e.ignore( self.ignoreExprs[-1] )
+        return self
+
+    def __str__( self ):
+        try:
+            return super(ParseExpression,self).__str__()
+        except Exception:
+            pass
+
+        if self.strRepr is None:
+            self.strRepr = "%s:(%s)" % ( self.__class__.__name__, _ustr(self.exprs) )
+        return self.strRepr
+
+    def streamline( self ):
+        super(ParseExpression,self).streamline()
+
+        for e in self.exprs:
+            e.streamline()
+
+        # collapse nested And's of the form And( And( And( a,b), c), d) to And( a,b,c,d )
+        # but only if there are no parse actions or resultsNames on the nested And's
+        # (likewise for Or's and MatchFirst's)
+        if ( len(self.exprs) == 2 ):
+            other = self.exprs[0]
+            if ( isinstance( other, self.__class__ ) and
+                  not(other.parseAction) and
+                  other.resultsName is None and
+                  not other.debug ):
+                self.exprs = other.exprs[:] + [ self.exprs[1] ]
+                self.strRepr = None
+                self.mayReturnEmpty |= other.mayReturnEmpty
+                self.mayIndexError  |= other.mayIndexError
+
+            other = self.exprs[-1]
+            if ( isinstance( other, self.__class__ ) and
+                  not(other.parseAction) and
+                  other.resultsName is None and
+                  not other.debug ):
+                self.exprs = self.exprs[:-1] + other.exprs[:]
+                self.strRepr = None
+                self.mayReturnEmpty |= other.mayReturnEmpty
+                self.mayIndexError  |= other.mayIndexError
+
+        self.errmsg = "Expected " + _ustr(self)
+        
+        return self
+
+    def setResultsName( self, name, listAllMatches=False ):
+        ret = super(ParseExpression,self).setResultsName(name,listAllMatches)
+        return ret
+
+    def validate( self, validateTrace=[] ):
+        tmp = validateTrace[:]+[self]
+        for e in self.exprs:
+            e.validate(tmp)
+        self.checkRecursion( [] )
+        
+    def copy(self):
+        ret = super(ParseExpression,self).copy()
+        ret.exprs = [e.copy() for e in self.exprs]
+        return ret
+
+class And(ParseExpression):
+    """
+    Requires all given C{ParseExpression}s to be found in the given order.
+    Expressions may be separated by whitespace.
+    May be constructed using the C{'+'} operator.
+    May also be constructed using the C{'-'} operator, which will suppress backtracking.
+
+    Example::
+        integer = Word(nums)
+        name_expr = OneOrMore(Word(alphas))
+
+        expr = And([integer("id"),name_expr("name"),integer("age")])
+        # more easily written as:
+        expr = integer("id") + name_expr("name") + integer("age")
+    """
+
+    class _ErrorStop(Empty):
+        def __init__(self, *args, **kwargs):
+            super(And._ErrorStop,self).__init__(*args, **kwargs)
+            self.name = '-'
+            self.leaveWhitespace()
+
+    def __init__( self, exprs, savelist = True ):
+        super(And,self).__init__(exprs, savelist)
+        self.mayReturnEmpty = all(e.mayReturnEmpty for e in self.exprs)
+        self.setWhitespaceChars( self.exprs[0].whiteChars )
+        self.skipWhitespace = self.exprs[0].skipWhitespace
+        self.callPreparse = True
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        # pass False as last arg to _parse for first element, since we already
+        # pre-parsed the string as part of our And pre-parsing
+        loc, resultlist = self.exprs[0]._parse( instring, loc, doActions, callPreParse=False )
+        errorStop = False
+        for e in self.exprs[1:]:
+            if isinstance(e, And._ErrorStop):
+                errorStop = True
+                continue
+            if errorStop:
+                try:
+                    loc, exprtokens = e._parse( instring, loc, doActions )
+                except ParseSyntaxException:
+                    raise
+                except ParseBaseException as pe:
+                    pe.__traceback__ = None
+                    raise ParseSyntaxException._from_exception(pe)
+                except IndexError:
+                    raise ParseSyntaxException(instring, len(instring), self.errmsg, self)
+            else:
+                loc, exprtokens = e._parse( instring, loc, doActions )
+            if exprtokens or exprtokens.haskeys():
+                resultlist += exprtokens
+        return loc, resultlist
+
+    def __iadd__(self, other ):
+        if isinstance( other, basestring ):
+            other = ParserElement._literalStringClass( other )
+        return self.append( other ) #And( [ self, other ] )
+
+    def checkRecursion( self, parseElementList ):
+        subRecCheckList = parseElementList[:] + [ self ]
+        for e in self.exprs:
+            e.checkRecursion( subRecCheckList )
+            if not e.mayReturnEmpty:
+                break
+
+    def __str__( self ):
+        if hasattr(self,"name"):
+            return self.name
+
+        if self.strRepr is None:
+            self.strRepr = "{" + " ".join(_ustr(e) for e in self.exprs) + "}"
+
+        return self.strRepr
+
+
+class Or(ParseExpression):
+    """
+    Requires that at least one C{ParseExpression} is found.
+    If two expressions match, the expression that matches the longest string will be used.
+    May be constructed using the C{'^'} operator.
+
+    Example::
+        # construct Or using '^' operator
+        
+        number = Word(nums) ^ Combine(Word(nums) + '.' + Word(nums))
+        print(number.searchString("123 3.1416 789"))
+    prints::
+        [['123'], ['3.1416'], ['789']]
+    """
+    def __init__( self, exprs, savelist = False ):
+        super(Or,self).__init__(exprs, savelist)
+        if self.exprs:
+            self.mayReturnEmpty = any(e.mayReturnEmpty for e in self.exprs)
+        else:
+            self.mayReturnEmpty = True
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        maxExcLoc = -1
+        maxException = None
+        matches = []
+        for e in self.exprs:
+            try:
+                loc2 = e.tryParse( instring, loc )
+            except ParseException as err:
+                err.__traceback__ = None
+                if err.loc > maxExcLoc:
+                    maxException = err
+                    maxExcLoc = err.loc
+            except IndexError:
+                if len(instring) > maxExcLoc:
+                    maxException = ParseException(instring,len(instring),e.errmsg,self)
+                    maxExcLoc = len(instring)
+            else:
+                # save match among all matches, to retry longest to shortest
+                matches.append((loc2, e))
+
+        if matches:
+            matches.sort(key=lambda x: -x[0])
+            for _,e in matches:
+                try:
+                    return e._parse( instring, loc, doActions )
+                except ParseException as err:
+                    err.__traceback__ = None
+                    if err.loc > maxExcLoc:
+                        maxException = err
+                        maxExcLoc = err.loc
+
+        if maxException is not None:
+            maxException.msg = self.errmsg
+            raise maxException
+        else:
+            raise ParseException(instring, loc, "no defined alternatives to match", self)
+
+
+    def __ixor__(self, other ):
+        if isinstance( other, basestring ):
+            other = ParserElement._literalStringClass( other )
+        return self.append( other ) #Or( [ self, other ] )
+
+    def __str__( self ):
+        if hasattr(self,"name"):
+            return self.name
+
+        if self.strRepr is None:
+            self.strRepr = "{" + " ^ ".join(_ustr(e) for e in self.exprs) + "}"
+
+        return self.strRepr
+
+    def checkRecursion( self, parseElementList ):
+        subRecCheckList = parseElementList[:] + [ self ]
+        for e in self.exprs:
+            e.checkRecursion( subRecCheckList )
+
+
+class MatchFirst(ParseExpression):
+    """
+    Requires that at least one C{ParseExpression} is found.
+    If two expressions match, the first one listed is the one that will match.
+    May be constructed using the C{'|'} operator.
+
+    Example::
+        # construct MatchFirst using '|' operator
+        
+        # watch the order of expressions to match
+        number = Word(nums) | Combine(Word(nums) + '.' + Word(nums))
+        print(number.searchString("123 3.1416 789")) #  Fail! -> [['123'], ['3'], ['1416'], ['789']]
+
+        # put more selective expression first
+        number = Combine(Word(nums) + '.' + Word(nums)) | Word(nums)
+        print(number.searchString("123 3.1416 789")) #  Better -> [['123'], ['3.1416'], ['789']]
+    """
+    def __init__( self, exprs, savelist = False ):
+        super(MatchFirst,self).__init__(exprs, savelist)
+        if self.exprs:
+            self.mayReturnEmpty = any(e.mayReturnEmpty for e in self.exprs)
+        else:
+            self.mayReturnEmpty = True
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        maxExcLoc = -1
+        maxException = None
+        for e in self.exprs:
+            try:
+                ret = e._parse( instring, loc, doActions )
+                return ret
+            except ParseException as err:
+                if err.loc > maxExcLoc:
+                    maxException = err
+                    maxExcLoc = err.loc
+            except IndexError:
+                if len(instring) > maxExcLoc:
+                    maxException = ParseException(instring,len(instring),e.errmsg,self)
+                    maxExcLoc = len(instring)
+
+        # only got here if no expression matched, raise exception for match that made it the furthest
+        else:
+            if maxException is not None:
+                maxException.msg = self.errmsg
+                raise maxException
+            else:
+                raise ParseException(instring, loc, "no defined alternatives to match", self)
+
+    def __ior__(self, other ):
+        if isinstance( other, basestring ):
+            other = ParserElement._literalStringClass( other )
+        return self.append( other ) #MatchFirst( [ self, other ] )
+
+    def __str__( self ):
+        if hasattr(self,"name"):
+            return self.name
+
+        if self.strRepr is None:
+            self.strRepr = "{" + " | ".join(_ustr(e) for e in self.exprs) + "}"
+
+        return self.strRepr
+
+    def checkRecursion( self, parseElementList ):
+        subRecCheckList = parseElementList[:] + [ self ]
+        for e in self.exprs:
+            e.checkRecursion( subRecCheckList )
+
+
+class Each(ParseExpression):
+    """
+    Requires all given C{ParseExpression}s to be found, but in any order.
+    Expressions may be separated by whitespace.
+    May be constructed using the C{'&'} operator.
+
+    Example::
+        color = oneOf("RED ORANGE YELLOW GREEN BLUE PURPLE BLACK WHITE BROWN")
+        shape_type = oneOf("SQUARE CIRCLE TRIANGLE STAR HEXAGON OCTAGON")
+        integer = Word(nums)
+        shape_attr = "shape:" + shape_type("shape")
+        posn_attr = "posn:" + Group(integer("x") + ',' + integer("y"))("posn")
+        color_attr = "color:" + color("color")
+        size_attr = "size:" + integer("size")
+
+        # use Each (using operator '&') to accept attributes in any order 
+        # (shape and posn are required, color and size are optional)
+        shape_spec = shape_attr & posn_attr & Optional(color_attr) & Optional(size_attr)
+
+        shape_spec.runTests('''
+            shape: SQUARE color: BLACK posn: 100, 120
+            shape: CIRCLE size: 50 color: BLUE posn: 50,80
+            color:GREEN size:20 shape:TRIANGLE posn:20,40
+            '''
+            )
+    prints::
+        shape: SQUARE color: BLACK posn: 100, 120
+        ['shape:', 'SQUARE', 'color:', 'BLACK', 'posn:', ['100', ',', '120']]
+        - color: BLACK
+        - posn: ['100', ',', '120']
+          - x: 100
+          - y: 120
+        - shape: SQUARE
+
+
+        shape: CIRCLE size: 50 color: BLUE posn: 50,80
+        ['shape:', 'CIRCLE', 'size:', '50', 'color:', 'BLUE', 'posn:', ['50', ',', '80']]
+        - color: BLUE
+        - posn: ['50', ',', '80']
+          - x: 50
+          - y: 80
+        - shape: CIRCLE
+        - size: 50
+
+
+        color: GREEN size: 20 shape: TRIANGLE posn: 20,40
+        ['color:', 'GREEN', 'size:', '20', 'shape:', 'TRIANGLE', 'posn:', ['20', ',', '40']]
+        - color: GREEN
+        - posn: ['20', ',', '40']
+          - x: 20
+          - y: 40
+        - shape: TRIANGLE
+        - size: 20
+    """
+    def __init__( self, exprs, savelist = True ):
+        super(Each,self).__init__(exprs, savelist)
+        self.mayReturnEmpty = all(e.mayReturnEmpty for e in self.exprs)
+        self.skipWhitespace = True
+        self.initExprGroups = True
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        if self.initExprGroups:
+            self.opt1map = dict((id(e.expr),e) for e in self.exprs if isinstance(e,Optional))
+            opt1 = [ e.expr for e in self.exprs if isinstance(e,Optional) ]
+            opt2 = [ e for e in self.exprs if e.mayReturnEmpty and not isinstance(e,Optional)]
+            self.optionals = opt1 + opt2
+            self.multioptionals = [ e.expr for e in self.exprs if isinstance(e,ZeroOrMore) ]
+            self.multirequired = [ e.expr for e in self.exprs if isinstance(e,OneOrMore) ]
+            self.required = [ e for e in self.exprs if not isinstance(e,(Optional,ZeroOrMore,OneOrMore)) ]
+            self.required += self.multirequired
+            self.initExprGroups = False
+        tmpLoc = loc
+        tmpReqd = self.required[:]
+        tmpOpt  = self.optionals[:]
+        matchOrder = []
+
+        keepMatching = True
+        while keepMatching:
+            tmpExprs = tmpReqd + tmpOpt + self.multioptionals + self.multirequired
+            failed = []
+            for e in tmpExprs:
+                try:
+                    tmpLoc = e.tryParse( instring, tmpLoc )
+                except ParseException:
+                    failed.append(e)
+                else:
+                    matchOrder.append(self.opt1map.get(id(e),e))
+                    if e in tmpReqd:
+                        tmpReqd.remove(e)
+                    elif e in tmpOpt:
+                        tmpOpt.remove(e)
+            if len(failed) == len(tmpExprs):
+                keepMatching = False
+
+        if tmpReqd:
+            missing = ", ".join(_ustr(e) for e in tmpReqd)
+            raise ParseException(instring,loc,"Missing one or more required elements (%s)" % missing )
+
+        # add any unmatched Optionals, in case they have default values defined
+        matchOrder += [e for e in self.exprs if isinstance(e,Optional) and e.expr in tmpOpt]
+
+        resultlist = []
+        for e in matchOrder:
+            loc,results = e._parse(instring,loc,doActions)
+            resultlist.append(results)
+
+        finalResults = sum(resultlist, ParseResults([]))
+        return loc, finalResults
+
+    def __str__( self ):
+        if hasattr(self,"name"):
+            return self.name
+
+        if self.strRepr is None:
+            self.strRepr = "{" + " & ".join(_ustr(e) for e in self.exprs) + "}"
+
+        return self.strRepr
+
+    def checkRecursion( self, parseElementList ):
+        subRecCheckList = parseElementList[:] + [ self ]
+        for e in self.exprs:
+            e.checkRecursion( subRecCheckList )
+
+
+class ParseElementEnhance(ParserElement):
+    """
+    Abstract subclass of C{ParserElement}, for combining and post-processing parsed tokens.
+    """
+    def __init__( self, expr, savelist=False ):
+        super(ParseElementEnhance,self).__init__(savelist)
+        if isinstance( expr, basestring ):
+            if issubclass(ParserElement._literalStringClass, Token):
+                expr = ParserElement._literalStringClass(expr)
+            else:
+                expr = ParserElement._literalStringClass(Literal(expr))
+        self.expr = expr
+        self.strRepr = None
+        if expr is not None:
+            self.mayIndexError = expr.mayIndexError
+            self.mayReturnEmpty = expr.mayReturnEmpty
+            self.setWhitespaceChars( expr.whiteChars )
+            self.skipWhitespace = expr.skipWhitespace
+            self.saveAsList = expr.saveAsList
+            self.callPreparse = expr.callPreparse
+            self.ignoreExprs.extend(expr.ignoreExprs)
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        if self.expr is not None:
+            return self.expr._parse( instring, loc, doActions, callPreParse=False )
+        else:
+            raise ParseException("",loc,self.errmsg,self)
+
+    def leaveWhitespace( self ):
+        self.skipWhitespace = False
+        self.expr = self.expr.copy()
+        if self.expr is not None:
+            self.expr.leaveWhitespace()
+        return self
+
+    def ignore( self, other ):
+        if isinstance( other, Suppress ):
+            if other not in self.ignoreExprs:
+                super( ParseElementEnhance, self).ignore( other )
+                if self.expr is not None:
+                    self.expr.ignore( self.ignoreExprs[-1] )
+        else:
+            super( ParseElementEnhance, self).ignore( other )
+            if self.expr is not None:
+                self.expr.ignore( self.ignoreExprs[-1] )
+        return self
+
+    def streamline( self ):
+        super(ParseElementEnhance,self).streamline()
+        if self.expr is not None:
+            self.expr.streamline()
+        return self
+
+    def checkRecursion( self, parseElementList ):
+        if self in parseElementList:
+            raise RecursiveGrammarException( parseElementList+[self] )
+        subRecCheckList = parseElementList[:] + [ self ]
+        if self.expr is not None:
+            self.expr.checkRecursion( subRecCheckList )
+
+    def validate( self, validateTrace=[] ):
+        tmp = validateTrace[:]+[self]
+        if self.expr is not None:
+            self.expr.validate(tmp)
+        self.checkRecursion( [] )
+
+    def __str__( self ):
+        try:
+            return super(ParseElementEnhance,self).__str__()
+        except Exception:
+            pass
+
+        if self.strRepr is None and self.expr is not None:
+            self.strRepr = "%s:(%s)" % ( self.__class__.__name__, _ustr(self.expr) )
+        return self.strRepr
+
+
+class FollowedBy(ParseElementEnhance):
+    """
+    Lookahead matching of the given parse expression.  C{FollowedBy}
+    does I{not} advance the parsing position within the input string, it only
+    verifies that the specified parse expression matches at the current
+    position.  C{FollowedBy} always returns a null token list.
+
+    Example::
+        # use FollowedBy to match a label only if it is followed by a ':'
+        data_word = Word(alphas)
+        label = data_word + FollowedBy(':')
+        attr_expr = Group(label + Suppress(':') + OneOrMore(data_word, stopOn=label).setParseAction(' '.join))
+        
+        OneOrMore(attr_expr).parseString("shape: SQUARE color: BLACK posn: upper left").pprint()
+    prints::
+        [['shape', 'SQUARE'], ['color', 'BLACK'], ['posn', 'upper left']]
+    """
+    def __init__( self, expr ):
+        super(FollowedBy,self).__init__(expr)
+        self.mayReturnEmpty = True
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        self.expr.tryParse( instring, loc )
+        return loc, []
+
+
+class NotAny(ParseElementEnhance):
+    """
+    Lookahead to disallow matching with the given parse expression.  C{NotAny}
+    does I{not} advance the parsing position within the input string, it only
+    verifies that the specified parse expression does I{not} match at the current
+    position.  Also, C{NotAny} does I{not} skip over leading whitespace. C{NotAny}
+    always returns a null token list.  May be constructed using the '~' operator.
+
+    Example::
+        
+    """
+    def __init__( self, expr ):
+        super(NotAny,self).__init__(expr)
+        #~ self.leaveWhitespace()
+        self.skipWhitespace = False  # do NOT use self.leaveWhitespace(), don't want to propagate to exprs
+        self.mayReturnEmpty = True
+        self.errmsg = "Found unwanted token, "+_ustr(self.expr)
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        if self.expr.canParseNext(instring, loc):
+            raise ParseException(instring, loc, self.errmsg, self)
+        return loc, []
+
+    def __str__( self ):
+        if hasattr(self,"name"):
+            return self.name
+
+        if self.strRepr is None:
+            self.strRepr = "~{" + _ustr(self.expr) + "}"
+
+        return self.strRepr
+
+class _MultipleMatch(ParseElementEnhance):
+    def __init__( self, expr, stopOn=None):
+        super(_MultipleMatch, self).__init__(expr)
+        self.saveAsList = True
+        ender = stopOn
+        if isinstance(ender, basestring):
+            ender = ParserElement._literalStringClass(ender)
+        self.not_ender = ~ender if ender is not None else None
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        self_expr_parse = self.expr._parse
+        self_skip_ignorables = self._skipIgnorables
+        check_ender = self.not_ender is not None
+        if check_ender:
+            try_not_ender = self.not_ender.tryParse
+        
+        # must be at least one (but first see if we are the stopOn sentinel;
+        # if so, fail)
+        if check_ender:
+            try_not_ender(instring, loc)
+        loc, tokens = self_expr_parse( instring, loc, doActions, callPreParse=False )
+        try:
+            hasIgnoreExprs = (not not self.ignoreExprs)
+            while 1:
+                if check_ender:
+                    try_not_ender(instring, loc)
+                if hasIgnoreExprs:
+                    preloc = self_skip_ignorables( instring, loc )
+                else:
+                    preloc = loc
+                loc, tmptokens = self_expr_parse( instring, preloc, doActions )
+                if tmptokens or tmptokens.haskeys():
+                    tokens += tmptokens
+        except (ParseException,IndexError):
+            pass
+
+        return loc, tokens
+        
+class OneOrMore(_MultipleMatch):
+    """
+    Repetition of one or more of the given expression.
+    
+    Parameters:
+     - expr - expression that must match one or more times
+     - stopOn - (default=C{None}) - expression for a terminating sentinel
+          (only required if the sentinel would ordinarily match the repetition 
+          expression)          
+
+    Example::
+        data_word = Word(alphas)
+        label = data_word + FollowedBy(':')
+        attr_expr = Group(label + Suppress(':') + OneOrMore(data_word).setParseAction(' '.join))
+
+        text = "shape: SQUARE posn: upper left color: BLACK"
+        OneOrMore(attr_expr).parseString(text).pprint()  # Fail! read 'color' as data instead of next label -> [['shape', 'SQUARE color']]
+
+        # use stopOn attribute for OneOrMore to avoid reading label string as part of the data
+        attr_expr = Group(label + Suppress(':') + OneOrMore(data_word, stopOn=label).setParseAction(' '.join))
+        OneOrMore(attr_expr).parseString(text).pprint() # Better -> [['shape', 'SQUARE'], ['posn', 'upper left'], ['color', 'BLACK']]
+        
+        # could also be written as
+        (attr_expr * (1,)).parseString(text).pprint()
+    """
+
+    def __str__( self ):
+        if hasattr(self,"name"):
+            return self.name
+
+        if self.strRepr is None:
+            self.strRepr = "{" + _ustr(self.expr) + "}..."
+
+        return self.strRepr
+
+class ZeroOrMore(_MultipleMatch):
+    """
+    Optional repetition of zero or more of the given expression.
+    
+    Parameters:
+     - expr - expression that must match zero or more times
+     - stopOn - (default=C{None}) - expression for a terminating sentinel
+          (only required if the sentinel would ordinarily match the repetition 
+          expression)          
+
+    Example: similar to L{OneOrMore}
+    """
+    def __init__( self, expr, stopOn=None):
+        super(ZeroOrMore,self).__init__(expr, stopOn=stopOn)
+        self.mayReturnEmpty = True
+        
+    def parseImpl( self, instring, loc, doActions=True ):
+        try:
+            return super(ZeroOrMore, self).parseImpl(instring, loc, doActions)
+        except (ParseException,IndexError):
+            return loc, []
+
+    def __str__( self ):
+        if hasattr(self,"name"):
+            return self.name
+
+        if self.strRepr is None:
+            self.strRepr = "[" + _ustr(self.expr) + "]..."
+
+        return self.strRepr
+
+class _NullToken(object):
+    def __bool__(self):
+        return False
+    __nonzero__ = __bool__
+    def __str__(self):
+        return ""
+
+_optionalNotMatched = _NullToken()
+class Optional(ParseElementEnhance):
+    """
+    Optional matching of the given expression.
+
+    Parameters:
+     - expr - expression that must match zero or more times
+     - default (optional) - value to be returned if the optional expression is not found.
+
+    Example::
+        # US postal code can be a 5-digit zip, plus optional 4-digit qualifier
+        zip = Combine(Word(nums, exact=5) + Optional('-' + Word(nums, exact=4)))
+        zip.runTests('''
+            # traditional ZIP code
+            12345
+            
+            # ZIP+4 form
+            12101-0001
+            
+            # invalid ZIP
+            98765-
+            ''')
+    prints::
+        # traditional ZIP code
+        12345
+        ['12345']
+
+        # ZIP+4 form
+        12101-0001
+        ['12101-0001']
+
+        # invalid ZIP
+        98765-
+             ^
+        FAIL: Expected end of text (at char 5), (line:1, col:6)
+    """
+    def __init__( self, expr, default=_optionalNotMatched ):
+        super(Optional,self).__init__( expr, savelist=False )
+        self.saveAsList = self.expr.saveAsList
+        self.defaultValue = default
+        self.mayReturnEmpty = True
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        try:
+            loc, tokens = self.expr._parse( instring, loc, doActions, callPreParse=False )
+        except (ParseException,IndexError):
+            if self.defaultValue is not _optionalNotMatched:
+                if self.expr.resultsName:
+                    tokens = ParseResults([ self.defaultValue ])
+                    tokens[self.expr.resultsName] = self.defaultValue
+                else:
+                    tokens = [ self.defaultValue ]
+            else:
+                tokens = []
+        return loc, tokens
+
+    def __str__( self ):
+        if hasattr(self,"name"):
+            return self.name
+
+        if self.strRepr is None:
+            self.strRepr = "[" + _ustr(self.expr) + "]"
+
+        return self.strRepr
+
+class SkipTo(ParseElementEnhance):
+    """
+    Token for skipping over all undefined text until the matched expression is found.
+
+    Parameters:
+     - expr - target expression marking the end of the data to be skipped
+     - include - (default=C{False}) if True, the target expression is also parsed 
+          (the skipped text and target expression are returned as a 2-element list).
+     - ignore - (default=C{None}) used to define grammars (typically quoted strings and 
+          comments) that might contain false matches to the target expression
+     - failOn - (default=C{None}) define expressions that are not allowed to be 
+          included in the skipped test; if found before the target expression is found, 
+          the SkipTo is not a match
+
+    Example::
+        report = '''
+            Outstanding Issues Report - 1 Jan 2000
+
+               # | Severity | Description                               |  Days Open
+            -----+----------+-------------------------------------------+-----------
+             101 | Critical | Intermittent system crash                 |          6
+              94 | Cosmetic | Spelling error on Login ('log|n')         |         14
+              79 | Minor    | System slow when running too many reports |         47
+            '''
+        integer = Word(nums)
+        SEP = Suppress('|')
+        # use SkipTo to simply match everything up until the next SEP
+        # - ignore quoted strings, so that a '|' character inside a quoted string does not match
+        # - parse action will call token.strip() for each matched token, i.e., the description body
+        string_data = SkipTo(SEP, ignore=quotedString)
+        string_data.setParseAction(tokenMap(str.strip))
+        ticket_expr = (integer("issue_num") + SEP 
+                      + string_data("sev") + SEP 
+                      + string_data("desc") + SEP 
+                      + integer("days_open"))
+        
+        for tkt in ticket_expr.searchString(report):
+            print tkt.dump()
+    prints::
+        ['101', 'Critical', 'Intermittent system crash', '6']
+        - days_open: 6
+        - desc: Intermittent system crash
+        - issue_num: 101
+        - sev: Critical
+        ['94', 'Cosmetic', "Spelling error on Login ('log|n')", '14']
+        - days_open: 14
+        - desc: Spelling error on Login ('log|n')
+        - issue_num: 94
+        - sev: Cosmetic
+        ['79', 'Minor', 'System slow when running too many reports', '47']
+        - days_open: 47
+        - desc: System slow when running too many reports
+        - issue_num: 79
+        - sev: Minor
+    """
+    def __init__( self, other, include=False, ignore=None, failOn=None ):
+        super( SkipTo, self ).__init__( other )
+        self.ignoreExpr = ignore
+        self.mayReturnEmpty = True
+        self.mayIndexError = False
+        self.includeMatch = include
+        self.asList = False
+        if isinstance(failOn, basestring):
+            self.failOn = ParserElement._literalStringClass(failOn)
+        else:
+            self.failOn = failOn
+        self.errmsg = "No match found for "+_ustr(self.expr)
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        startloc = loc
+        instrlen = len(instring)
+        expr = self.expr
+        expr_parse = self.expr._parse
+        self_failOn_canParseNext = self.failOn.canParseNext if self.failOn is not None else None
+        self_ignoreExpr_tryParse = self.ignoreExpr.tryParse if self.ignoreExpr is not None else None
+        
+        tmploc = loc
+        while tmploc <= instrlen:
+            if self_failOn_canParseNext is not None:
+                # break if failOn expression matches
+                if self_failOn_canParseNext(instring, tmploc):
+                    break
+                    
+            if self_ignoreExpr_tryParse is not None:
+                # advance past ignore expressions
+                while 1:
+                    try:
+                        tmploc = self_ignoreExpr_tryParse(instring, tmploc)
+                    except ParseBaseException:
+                        break
+            
+            try:
+                expr_parse(instring, tmploc, doActions=False, callPreParse=False)
+            except (ParseException, IndexError):
+                # no match, advance loc in string
+                tmploc += 1
+            else:
+                # matched skipto expr, done
+                break
+
+        else:
+            # ran off the end of the input string without matching skipto expr, fail
+            raise ParseException(instring, loc, self.errmsg, self)
+
+        # build up return values
+        loc = tmploc
+        skiptext = instring[startloc:loc]
+        skipresult = ParseResults(skiptext)
+        
+        if self.includeMatch:
+            loc, mat = expr_parse(instring,loc,doActions,callPreParse=False)
+            skipresult += mat
+
+        return loc, skipresult
+
+class Forward(ParseElementEnhance):
+    """
+    Forward declaration of an expression to be defined later -
+    used for recursive grammars, such as algebraic infix notation.
+    When the expression is known, it is assigned to the C{Forward} variable using the '<<' operator.
+
+    Note: take care when assigning to C{Forward} not to overlook precedence of operators.
+    Specifically, '|' has a lower precedence than '<<', so that::
+        fwdExpr << a | b | c
+    will actually be evaluated as::
+        (fwdExpr << a) | b | c
+    thereby leaving b and c out as parseable alternatives.  It is recommended that you
+    explicitly group the values inserted into the C{Forward}::
+        fwdExpr << (a | b | c)
+    Converting to use the '<<=' operator instead will avoid this problem.
+
+    See L{ParseResults.pprint} for an example of a recursive parser created using
+    C{Forward}.
+    """
+    def __init__( self, other=None ):
+        super(Forward,self).__init__( other, savelist=False )
+
+    def __lshift__( self, other ):
+        if isinstance( other, basestring ):
+            other = ParserElement._literalStringClass(other)
+        self.expr = other
+        self.strRepr = None
+        self.mayIndexError = self.expr.mayIndexError
+        self.mayReturnEmpty = self.expr.mayReturnEmpty
+        self.setWhitespaceChars( self.expr.whiteChars )
+        self.skipWhitespace = self.expr.skipWhitespace
+        self.saveAsList = self.expr.saveAsList
+        self.ignoreExprs.extend(self.expr.ignoreExprs)
+        return self
+        
+    def __ilshift__(self, other):
+        return self << other
+    
+    def leaveWhitespace( self ):
+        self.skipWhitespace = False
+        return self
+
+    def streamline( self ):
+        if not self.streamlined:
+            self.streamlined = True
+            if self.expr is not None:
+                self.expr.streamline()
+        return self
+
+    def validate( self, validateTrace=[] ):
+        if self not in validateTrace:
+            tmp = validateTrace[:]+[self]
+            if self.expr is not None:
+                self.expr.validate(tmp)
+        self.checkRecursion([])
+
+    def __str__( self ):
+        if hasattr(self,"name"):
+            return self.name
+        return self.__class__.__name__ + ": ..."
+
+        # stubbed out for now - creates awful memory and perf issues
+        self._revertClass = self.__class__
+        self.__class__ = _ForwardNoRecurse
+        try:
+            if self.expr is not None:
+                retString = _ustr(self.expr)
+            else:
+                retString = "None"
+        finally:
+            self.__class__ = self._revertClass
+        return self.__class__.__name__ + ": " + retString
+
+    def copy(self):
+        if self.expr is not None:
+            return super(Forward,self).copy()
+        else:
+            ret = Forward()
+            ret <<= self
+            return ret
+
+class _ForwardNoRecurse(Forward):
+    def __str__( self ):
+        return "..."
+
+class TokenConverter(ParseElementEnhance):
+    """
+    Abstract subclass of C{ParseExpression}, for converting parsed results.
+    """
+    def __init__( self, expr, savelist=False ):
+        super(TokenConverter,self).__init__( expr )#, savelist )
+        self.saveAsList = False
+
+class Combine(TokenConverter):
+    """
+    Converter to concatenate all matching tokens to a single string.
+    By default, the matching patterns must also be contiguous in the input string;
+    this can be disabled by specifying C{'adjacent=False'} in the constructor.
+
+    Example::
+        real = Word(nums) + '.' + Word(nums)
+        print(real.parseString('3.1416')) # -> ['3', '.', '1416']
+        # will also erroneously match the following
+        print(real.parseString('3. 1416')) # -> ['3', '.', '1416']
+
+        real = Combine(Word(nums) + '.' + Word(nums))
+        print(real.parseString('3.1416')) # -> ['3.1416']
+        # no match when there are internal spaces
+        print(real.parseString('3. 1416')) # -> Exception: Expected W:(0123...)
+    """
+    def __init__( self, expr, joinString="", adjacent=True ):
+        super(Combine,self).__init__( expr )
+        # suppress whitespace-stripping in contained parse expressions, but re-enable it on the Combine itself
+        if adjacent:
+            self.leaveWhitespace()
+        self.adjacent = adjacent
+        self.skipWhitespace = True
+        self.joinString = joinString
+        self.callPreparse = True
+
+    def ignore( self, other ):
+        if self.adjacent:
+            ParserElement.ignore(self, other)
+        else:
+            super( Combine, self).ignore( other )
+        return self
+
+    def postParse( self, instring, loc, tokenlist ):
+        retToks = tokenlist.copy()
+        del retToks[:]
+        retToks += ParseResults([ "".join(tokenlist._asStringList(self.joinString)) ], modal=self.modalResults)
+
+        if self.resultsName and retToks.haskeys():
+            return [ retToks ]
+        else:
+            return retToks
+
+class Group(TokenConverter):
+    """
+    Converter to return the matched tokens as a list - useful for returning tokens of C{L{ZeroOrMore}} and C{L{OneOrMore}} expressions.
+
+    Example::
+        ident = Word(alphas)
+        num = Word(nums)
+        term = ident | num
+        func = ident + Optional(delimitedList(term))
+        print(func.parseString("fn a,b,100"))  # -> ['fn', 'a', 'b', '100']
+
+        func = ident + Group(Optional(delimitedList(term)))
+        print(func.parseString("fn a,b,100"))  # -> ['fn', ['a', 'b', '100']]
+    """
+    def __init__( self, expr ):
+        super(Group,self).__init__( expr )
+        self.saveAsList = True
+
+    def postParse( self, instring, loc, tokenlist ):
+        return [ tokenlist ]
+
+class Dict(TokenConverter):
+    """
+    Converter to return a repetitive expression as a list, but also as a dictionary.
+    Each element can also be referenced using the first token in the expression as its key.
+    Useful for tabular report scraping when the first column can be used as a item key.
+
+    Example::
+        data_word = Word(alphas)
+        label = data_word + FollowedBy(':')
+        attr_expr = Group(label + Suppress(':') + OneOrMore(data_word).setParseAction(' '.join))
+
+        text = "shape: SQUARE posn: upper left color: light blue texture: burlap"
+        attr_expr = (label + Suppress(':') + OneOrMore(data_word, stopOn=label).setParseAction(' '.join))
+        
+        # print attributes as plain groups
+        print(OneOrMore(attr_expr).parseString(text).dump())
+        
+        # instead of OneOrMore(expr), parse using Dict(OneOrMore(Group(expr))) - Dict will auto-assign names
+        result = Dict(OneOrMore(Group(attr_expr))).parseString(text)
+        print(result.dump())
+        
+        # access named fields as dict entries, or output as dict
+        print(result['shape'])        
+        print(result.asDict())
+    prints::
+        ['shape', 'SQUARE', 'posn', 'upper left', 'color', 'light blue', 'texture', 'burlap']
+
+        [['shape', 'SQUARE'], ['posn', 'upper left'], ['color', 'light blue'], ['texture', 'burlap']]
+        - color: light blue
+        - posn: upper left
+        - shape: SQUARE
+        - texture: burlap
+        SQUARE
+        {'color': 'light blue', 'posn': 'upper left', 'texture': 'burlap', 'shape': 'SQUARE'}
+    See more examples at L{ParseResults} of accessing fields by results name.
+    """
+    def __init__( self, expr ):
+        super(Dict,self).__init__( expr )
+        self.saveAsList = True
+
+    def postParse( self, instring, loc, tokenlist ):
+        for i,tok in enumerate(tokenlist):
+            if len(tok) == 0:
+                continue
+            ikey = tok[0]
+            if isinstance(ikey,int):
+                ikey = _ustr(tok[0]).strip()
+            if len(tok)==1:
+                tokenlist[ikey] = _ParseResultsWithOffset("",i)
+            elif len(tok)==2 and not isinstance(tok[1],ParseResults):
+                tokenlist[ikey] = _ParseResultsWithOffset(tok[1],i)
+            else:
+                dictvalue = tok.copy() #ParseResults(i)
+                del dictvalue[0]
+                if len(dictvalue)!= 1 or (isinstance(dictvalue,ParseResults) and dictvalue.haskeys()):
+                    tokenlist[ikey] = _ParseResultsWithOffset(dictvalue,i)
+                else:
+                    tokenlist[ikey] = _ParseResultsWithOffset(dictvalue[0],i)
+
+        if self.resultsName:
+            return [ tokenlist ]
+        else:
+            return tokenlist
+
+
+class Suppress(TokenConverter):
+    """
+    Converter for ignoring the results of a parsed expression.
+
+    Example::
+        source = "a, b, c,d"
+        wd = Word(alphas)
+        wd_list1 = wd + ZeroOrMore(',' + wd)
+        print(wd_list1.parseString(source))
+
+        # often, delimiters that are useful during parsing are just in the
+        # way afterward - use Suppress to keep them out of the parsed output
+        wd_list2 = wd + ZeroOrMore(Suppress(',') + wd)
+        print(wd_list2.parseString(source))
+    prints::
+        ['a', ',', 'b', ',', 'c', ',', 'd']
+        ['a', 'b', 'c', 'd']
+    (See also L{delimitedList}.)
+    """
+    def postParse( self, instring, loc, tokenlist ):
+        return []
+
+    def suppress( self ):
+        return self
+
+
+class OnlyOnce(object):
+    """
+    Wrapper for parse actions, to ensure they are only called once.
+    """
+    def __init__(self, methodCall):
+        self.callable = _trim_arity(methodCall)
+        self.called = False
+    def __call__(self,s,l,t):
+        if not self.called:
+            results = self.callable(s,l,t)
+            self.called = True
+            return results
+        raise ParseException(s,l,"")
+    def reset(self):
+        self.called = False
+
+def traceParseAction(f):
+    """
+    Decorator for debugging parse actions. 
+    
+    When the parse action is called, this decorator will print C{">> entering I{method-name}(line:I{current_source_line}, I{parse_location}, I{matched_tokens})".}
+    When the parse action completes, the decorator will print C{"<<"} followed by the returned value, or any exception that the parse action raised.
+
+    Example::
+        wd = Word(alphas)
+
+        @traceParseAction
+        def remove_duplicate_chars(tokens):
+            return ''.join(sorted(set(''.join(tokens))))
+
+        wds = OneOrMore(wd).setParseAction(remove_duplicate_chars)
+        print(wds.parseString("slkdjs sld sldd sdlf sdljf"))
+    prints::
+        >>entering remove_duplicate_chars(line: 'slkdjs sld sldd sdlf sdljf', 0, (['slkdjs', 'sld', 'sldd', 'sdlf', 'sdljf'], {}))
+        <<leaving remove_duplicate_chars (ret: 'dfjkls')
+        ['dfjkls']
+    """
+    f = _trim_arity(f)
+    def z(*paArgs):
+        thisFunc = f.__name__
+        s,l,t = paArgs[-3:]
+        if len(paArgs)>3:
+            thisFunc = paArgs[0].__class__.__name__ + '.' + thisFunc
+        sys.stderr.write( ">>entering %s(line: '%s', %d, %r)\n" % (thisFunc,line(l,s),l,t) )
+        try:
+            ret = f(*paArgs)
+        except Exception as exc:
+            sys.stderr.write( "<<leaving %s (exception: %s)\n" % (thisFunc,exc) )
+            raise
+        sys.stderr.write( "<<leaving %s (ret: %r)\n" % (thisFunc,ret) )
+        return ret
+    try:
+        z.__name__ = f.__name__
+    except AttributeError:
+        pass
+    return z
+
+#
+# global helpers
+#
+def delimitedList( expr, delim=",", combine=False ):
+    """
+    Helper to define a delimited list of expressions - the delimiter defaults to ','.
+    By default, the list elements and delimiters can have intervening whitespace, and
+    comments, but this can be overridden by passing C{combine=True} in the constructor.
+    If C{combine} is set to C{True}, the matching tokens are returned as a single token
+    string, with the delimiters included; otherwise, the matching tokens are returned
+    as a list of tokens, with the delimiters suppressed.
+
+    Example::
+        delimitedList(Word(alphas)).parseString("aa,bb,cc") # -> ['aa', 'bb', 'cc']
+        delimitedList(Word(hexnums), delim=':', combine=True).parseString("AA:BB:CC:DD:EE") # -> ['AA:BB:CC:DD:EE']
+    """
+    dlName = _ustr(expr)+" ["+_ustr(delim)+" "+_ustr(expr)+"]..."
+    if combine:
+        return Combine( expr + ZeroOrMore( delim + expr ) ).setName(dlName)
+    else:
+        return ( expr + ZeroOrMore( Suppress( delim ) + expr ) ).setName(dlName)
+
+def countedArray( expr, intExpr=None ):
+    """
+    Helper to define a counted list of expressions.
+    This helper defines a pattern of the form::
+        integer expr expr expr...
+    where the leading integer tells how many expr expressions follow.
+    The matched tokens returns the array of expr tokens as a list - the leading count token is suppressed.
+    
+    If C{intExpr} is specified, it should be a pyparsing expression that produces an integer value.
+
+    Example::
+        countedArray(Word(alphas)).parseString('2 ab cd ef')  # -> ['ab', 'cd']
+
+        # in this parser, the leading integer value is given in binary,
+        # '10' indicating that 2 values are in the array
+        binaryConstant = Word('01').setParseAction(lambda t: int(t[0], 2))
+        countedArray(Word(alphas), intExpr=binaryConstant).parseString('10 ab cd ef')  # -> ['ab', 'cd']
+    """
+    arrayExpr = Forward()
+    def countFieldParseAction(s,l,t):
+        n = t[0]
+        arrayExpr << (n and Group(And([expr]*n)) or Group(empty))
+        return []
+    if intExpr is None:
+        intExpr = Word(nums).setParseAction(lambda t:int(t[0]))
+    else:
+        intExpr = intExpr.copy()
+    intExpr.setName("arrayLen")
+    intExpr.addParseAction(countFieldParseAction, callDuringTry=True)
+    return ( intExpr + arrayExpr ).setName('(len) ' + _ustr(expr) + '...')
+
+def _flatten(L):
+    ret = []
+    for i in L:
+        if isinstance(i,list):
+            ret.extend(_flatten(i))
+        else:
+            ret.append(i)
+    return ret
+
+def matchPreviousLiteral(expr):
+    """
+    Helper to define an expression that is indirectly defined from
+    the tokens matched in a previous expression, that is, it looks
+    for a 'repeat' of a previous expression.  For example::
+        first = Word(nums)
+        second = matchPreviousLiteral(first)
+        matchExpr = first + ":" + second
+    will match C{"1:1"}, but not C{"1:2"}.  Because this matches a
+    previous literal, will also match the leading C{"1:1"} in C{"1:10"}.
+    If this is not desired, use C{matchPreviousExpr}.
+    Do I{not} use with packrat parsing enabled.
+    """
+    rep = Forward()
+    def copyTokenToRepeater(s,l,t):
+        if t:
+            if len(t) == 1:
+                rep << t[0]
+            else:
+                # flatten t tokens
+                tflat = _flatten(t.asList())
+                rep << And(Literal(tt) for tt in tflat)
+        else:
+            rep << Empty()
+    expr.addParseAction(copyTokenToRepeater, callDuringTry=True)
+    rep.setName('(prev) ' + _ustr(expr))
+    return rep
+
+def matchPreviousExpr(expr):
+    """
+    Helper to define an expression that is indirectly defined from
+    the tokens matched in a previous expression, that is, it looks
+    for a 'repeat' of a previous expression.  For example::
+        first = Word(nums)
+        second = matchPreviousExpr(first)
+        matchExpr = first + ":" + second
+    will match C{"1:1"}, but not C{"1:2"}.  Because this matches by
+    expressions, will I{not} match the leading C{"1:1"} in C{"1:10"};
+    the expressions are evaluated first, and then compared, so
+    C{"1"} is compared with C{"10"}.
+    Do I{not} use with packrat parsing enabled.
+    """
+    rep = Forward()
+    e2 = expr.copy()
+    rep <<= e2
+    def copyTokenToRepeater(s,l,t):
+        matchTokens = _flatten(t.asList())
+        def mustMatchTheseTokens(s,l,t):
+            theseTokens = _flatten(t.asList())
+            if  theseTokens != matchTokens:
+                raise ParseException("",0,"")
+        rep.setParseAction( mustMatchTheseTokens, callDuringTry=True )
+    expr.addParseAction(copyTokenToRepeater, callDuringTry=True)
+    rep.setName('(prev) ' + _ustr(expr))
+    return rep
+
+def _escapeRegexRangeChars(s):
+    #~  escape these chars: ^-]
+    for c in r"\^-]":
+        s = s.replace(c,_bslash+c)
+    s = s.replace("\n",r"\n")
+    s = s.replace("\t",r"\t")
+    return _ustr(s)
+
+def oneOf( strs, caseless=False, useRegex=True ):
+    """
+    Helper to quickly define a set of alternative Literals, and makes sure to do
+    longest-first testing when there is a conflict, regardless of the input order,
+    but returns a C{L{MatchFirst}} for best performance.
+
+    Parameters:
+     - strs - a string of space-delimited literals, or a collection of string literals
+     - caseless - (default=C{False}) - treat all literals as caseless
+     - useRegex - (default=C{True}) - as an optimization, will generate a Regex
+          object; otherwise, will generate a C{MatchFirst} object (if C{caseless=True}, or
+          if creating a C{Regex} raises an exception)
+
+    Example::
+        comp_oper = oneOf("< = > <= >= !=")
+        var = Word(alphas)
+        number = Word(nums)
+        term = var | number
+        comparison_expr = term + comp_oper + term
+        print(comparison_expr.searchString("B = 12  AA=23 B<=AA AA>12"))
+    prints::
+        [['B', '=', '12'], ['AA', '=', '23'], ['B', '<=', 'AA'], ['AA', '>', '12']]
+    """
+    if caseless:
+        isequal = ( lambda a,b: a.upper() == b.upper() )
+        masks = ( lambda a,b: b.upper().startswith(a.upper()) )
+        parseElementClass = CaselessLiteral
+    else:
+        isequal = ( lambda a,b: a == b )
+        masks = ( lambda a,b: b.startswith(a) )
+        parseElementClass = Literal
+
+    symbols = []
+    if isinstance(strs,basestring):
+        symbols = strs.split()
+    elif isinstance(strs, Iterable):
+        symbols = list(strs)
+    else:
+        warnings.warn("Invalid argument to oneOf, expected string or iterable",
+                SyntaxWarning, stacklevel=2)
+    if not symbols:
+        return NoMatch()
+
+    i = 0
+    while i < len(symbols)-1:
+        cur = symbols[i]
+        for j,other in enumerate(symbols[i+1:]):
+            if ( isequal(other, cur) ):
+                del symbols[i+j+1]
+                break
+            elif ( masks(cur, other) ):
+                del symbols[i+j+1]
+                symbols.insert(i,other)
+                cur = other
+                break
+        else:
+            i += 1
+
+    if not caseless and useRegex:
+        #~ print (strs,"->", "|".join( [ _escapeRegexChars(sym) for sym in symbols] ))
+        try:
+            if len(symbols)==len("".join(symbols)):
+                return Regex( "[%s]" % "".join(_escapeRegexRangeChars(sym) for sym in symbols) ).setName(' | '.join(symbols))
+            else:
+                return Regex( "|".join(re.escape(sym) for sym in symbols) ).setName(' | '.join(symbols))
+        except Exception:
+            warnings.warn("Exception creating Regex for oneOf, building MatchFirst",
+                    SyntaxWarning, stacklevel=2)
+
+
+    # last resort, just use MatchFirst
+    return MatchFirst(parseElementClass(sym) for sym in symbols).setName(' | '.join(symbols))
+
+def dictOf( key, value ):
+    """
+    Helper to easily and clearly define a dictionary by specifying the respective patterns
+    for the key and value.  Takes care of defining the C{L{Dict}}, C{L{ZeroOrMore}}, and C{L{Group}} tokens
+    in the proper order.  The key pattern can include delimiting markers or punctuation,
+    as long as they are suppressed, thereby leaving the significant key text.  The value
+    pattern can include named results, so that the C{Dict} results can include named token
+    fields.
+
+    Example::
+        text = "shape: SQUARE posn: upper left color: light blue texture: burlap"
+        attr_expr = (label + Suppress(':') + OneOrMore(data_word, stopOn=label).setParseAction(' '.join))
+        print(OneOrMore(attr_expr).parseString(text).dump())
+        
+        attr_label = label
+        attr_value = Suppress(':') + OneOrMore(data_word, stopOn=label).setParseAction(' '.join)
+
+        # similar to Dict, but simpler call format
+        result = dictOf(attr_label, attr_value).parseString(text)
+        print(result.dump())
+        print(result['shape'])
+        print(result.shape)  # object attribute access works too
+        print(result.asDict())
+    prints::
+        [['shape', 'SQUARE'], ['posn', 'upper left'], ['color', 'light blue'], ['texture', 'burlap']]
+        - color: light blue
+        - posn: upper left
+        - shape: SQUARE
+        - texture: burlap
+        SQUARE
+        SQUARE
+        {'color': 'light blue', 'shape': 'SQUARE', 'posn': 'upper left', 'texture': 'burlap'}
+    """
+    return Dict( ZeroOrMore( Group ( key + value ) ) )
+
+def originalTextFor(expr, asString=True):
+    """
+    Helper to return the original, untokenized text for a given expression.  Useful to
+    restore the parsed fields of an HTML start tag into the raw tag text itself, or to
+    revert separate tokens with intervening whitespace back to the original matching
+    input text. By default, returns astring containing the original parsed text.  
+       
+    If the optional C{asString} argument is passed as C{False}, then the return value is a 
+    C{L{ParseResults}} containing any results names that were originally matched, and a 
+    single token containing the original matched text from the input string.  So if 
+    the expression passed to C{L{originalTextFor}} contains expressions with defined
+    results names, you must set C{asString} to C{False} if you want to preserve those
+    results name values.
+
+    Example::
+        src = "this is test <b> bold <i>text</i> </b> normal text "
+        for tag in ("b","i"):
+            opener,closer = makeHTMLTags(tag)
+            patt = originalTextFor(opener + SkipTo(closer) + closer)
+            print(patt.searchString(src)[0])
+    prints::
+        ['<b> bold <i>text</i> </b>']
+        ['<i>text</i>']
+    """
+    locMarker = Empty().setParseAction(lambda s,loc,t: loc)
+    endlocMarker = locMarker.copy()
+    endlocMarker.callPreparse = False
+    matchExpr = locMarker("_original_start") + expr + endlocMarker("_original_end")
+    if asString:
+        extractText = lambda s,l,t: s[t._original_start:t._original_end]
+    else:
+        def extractText(s,l,t):
+            t[:] = [s[t.pop('_original_start'):t.pop('_original_end')]]
+    matchExpr.setParseAction(extractText)
+    matchExpr.ignoreExprs = expr.ignoreExprs
+    return matchExpr
+
+def ungroup(expr): 
+    """
+    Helper to undo pyparsing's default grouping of And expressions, even
+    if all but one are non-empty.
+    """
+    return TokenConverter(expr).setParseAction(lambda t:t[0])
+
+def locatedExpr(expr):
+    """
+    Helper to decorate a returned token with its starting and ending locations in the input string.
+    This helper adds the following results names:
+     - locn_start = location where matched expression begins
+     - locn_end = location where matched expression ends
+     - value = the actual parsed results
+
+    Be careful if the input text contains C{<TAB>} characters, you may want to call
+    C{L{ParserElement.parseWithTabs}}
+
+    Example::
+        wd = Word(alphas)
+        for match in locatedExpr(wd).searchString("ljsdf123lksdjjf123lkkjj1222"):
+            print(match)
+    prints::
+        [[0, 'ljsdf', 5]]
+        [[8, 'lksdjjf', 15]]
+        [[18, 'lkkjj', 23]]
+    """
+    locator = Empty().setParseAction(lambda s,l,t: l)
+    return Group(locator("locn_start") + expr("value") + locator.copy().leaveWhitespace()("locn_end"))
+
+
+# convenience constants for positional expressions
+empty       = Empty().setName("empty")
+lineStart   = LineStart().setName("lineStart")
+lineEnd     = LineEnd().setName("lineEnd")
+stringStart = StringStart().setName("stringStart")
+stringEnd   = StringEnd().setName("stringEnd")
+
+_escapedPunc = Word( _bslash, r"\[]-*.$+^?()~ ", exact=2 ).setParseAction(lambda s,l,t:t[0][1])
+_escapedHexChar = Regex(r"\\0?[xX][0-9a-fA-F]+").setParseAction(lambda s,l,t:unichr(int(t[0].lstrip(r'\0x'),16)))
+_escapedOctChar = Regex(r"\\0[0-7]+").setParseAction(lambda s,l,t:unichr(int(t[0][1:],8)))
+_singleChar = _escapedPunc | _escapedHexChar | _escapedOctChar | CharsNotIn(r'\]', exact=1)
+_charRange = Group(_singleChar + Suppress("-") + _singleChar)
+_reBracketExpr = Literal("[") + Optional("^").setResultsName("negate") + Group( OneOrMore( _charRange | _singleChar ) ).setResultsName("body") + "]"
+
+def srange(s):
+    r"""
+    Helper to easily define string ranges for use in Word construction.  Borrows
+    syntax from regexp '[]' string range definitions::
+        srange("[0-9]")   -> "0123456789"
+        srange("[a-z]")   -> "abcdefghijklmnopqrstuvwxyz"
+        srange("[a-z$_]") -> "abcdefghijklmnopqrstuvwxyz$_"
+    The input string must be enclosed in []'s, and the returned string is the expanded
+    character set joined into a single string.
+    The values enclosed in the []'s may be:
+     - a single character
+     - an escaped character with a leading backslash (such as C{\-} or C{\]})
+     - an escaped hex character with a leading C{'\x'} (C{\x21}, which is a C{'!'} character) 
+         (C{\0x##} is also supported for backwards compatibility) 
+     - an escaped octal character with a leading C{'\0'} (C{\041}, which is a C{'!'} character)
+     - a range of any of the above, separated by a dash (C{'a-z'}, etc.)
+     - any combination of the above (C{'aeiouy'}, C{'a-zA-Z0-9_$'}, etc.)
+    """
+    _expanded = lambda p: p if not isinstance(p,ParseResults) else ''.join(unichr(c) for c in range(ord(p[0]),ord(p[1])+1))
+    try:
+        return "".join(_expanded(part) for part in _reBracketExpr.parseString(s).body)
+    except Exception:
+        return ""
+
+def matchOnlyAtCol(n):
+    """
+    Helper method for defining parse actions that require matching at a specific
+    column in the input text.
+    """
+    def verifyCol(strg,locn,toks):
+        if col(locn,strg) != n:
+            raise ParseException(strg,locn,"matched token not at column %d" % n)
+    return verifyCol
+
+def replaceWith(replStr):
+    """
+    Helper method for common parse actions that simply return a literal value.  Especially
+    useful when used with C{L{transformString<ParserElement.transformString>}()}.
+
+    Example::
+        num = Word(nums).setParseAction(lambda toks: int(toks[0]))
+        na = oneOf("N/A NA").setParseAction(replaceWith(math.nan))
+        term = na | num
+        
+        OneOrMore(term).parseString("324 234 N/A 234") # -> [324, 234, nan, 234]
+    """
+    return lambda s,l,t: [replStr]
+
+def removeQuotes(s,l,t):
+    """
+    Helper parse action for removing quotation marks from parsed quoted strings.
+
+    Example::
+        # by default, quotation marks are included in parsed results
+        quotedString.parseString("'Now is the Winter of our Discontent'") # -> ["'Now is the Winter of our Discontent'"]
+
+        # use removeQuotes to strip quotation marks from parsed results
+        quotedString.setParseAction(removeQuotes)
+        quotedString.parseString("'Now is the Winter of our Discontent'") # -> ["Now is the Winter of our Discontent"]
+    """
+    return t[0][1:-1]
+
+def tokenMap(func, *args):
+    """
+    Helper to define a parse action by mapping a function to all elements of a ParseResults list.If any additional 
+    args are passed, they are forwarded to the given function as additional arguments after
+    the token, as in C{hex_integer = Word(hexnums).setParseAction(tokenMap(int, 16))}, which will convert the
+    parsed data to an integer using base 16.
+
+    Example (compare the last to example in L{ParserElement.transformString}::
+        hex_ints = OneOrMore(Word(hexnums)).setParseAction(tokenMap(int, 16))
+        hex_ints.runTests('''
+            00 11 22 aa FF 0a 0d 1a
+            ''')
+        
+        upperword = Word(alphas).setParseAction(tokenMap(str.upper))
+        OneOrMore(upperword).runTests('''
+            my kingdom for a horse
+            ''')
+
+        wd = Word(alphas).setParseAction(tokenMap(str.title))
+        OneOrMore(wd).setParseAction(' '.join).runTests('''
+            now is the winter of our discontent made glorious summer by this sun of york
+            ''')
+    prints::
+        00 11 22 aa FF 0a 0d 1a
+        [0, 17, 34, 170, 255, 10, 13, 26]
+
+        my kingdom for a horse
+        ['MY', 'KINGDOM', 'FOR', 'A', 'HORSE']
+
+        now is the winter of our discontent made glorious summer by this sun of york
+        ['Now Is The Winter Of Our Discontent Made Glorious Summer By This Sun Of York']
+    """
+    def pa(s,l,t):
+        return [func(tokn, *args) for tokn in t]
+
+    try:
+        func_name = getattr(func, '__name__', 
+                            getattr(func, '__class__').__name__)
+    except Exception:
+        func_name = str(func)
+    pa.__name__ = func_name
+
+    return pa
+
+upcaseTokens = tokenMap(lambda t: _ustr(t).upper())
+"""(Deprecated) Helper parse action to convert tokens to upper case. Deprecated in favor of L{pyparsing_common.upcaseTokens}"""
+
+downcaseTokens = tokenMap(lambda t: _ustr(t).lower())
+"""(Deprecated) Helper parse action to convert tokens to lower case. Deprecated in favor of L{pyparsing_common.downcaseTokens}"""
+    
+def _makeTags(tagStr, xml):
+    """Internal helper to construct opening and closing tag expressions, given a tag name"""
+    if isinstance(tagStr,basestring):
+        resname = tagStr
+        tagStr = Keyword(tagStr, caseless=not xml)
+    else:
+        resname = tagStr.name
+
+    tagAttrName = Word(alphas,alphanums+"_-:")
+    if (xml):
+        tagAttrValue = dblQuotedString.copy().setParseAction( removeQuotes )
+        openTag = Suppress("<") + tagStr("tag") + \
+                Dict(ZeroOrMore(Group( tagAttrName + Suppress("=") + tagAttrValue ))) + \
+                Optional("/",default=[False]).setResultsName("empty").setParseAction(lambda s,l,t:t[0]=='/') + Suppress(">")
+    else:
+        printablesLessRAbrack = "".join(c for c in printables if c not in ">")
+        tagAttrValue = quotedString.copy().setParseAction( removeQuotes ) | Word(printablesLessRAbrack)
+        openTag = Suppress("<") + tagStr("tag") + \
+                Dict(ZeroOrMore(Group( tagAttrName.setParseAction(downcaseTokens) + \
+                Optional( Suppress("=") + tagAttrValue ) ))) + \
+                Optional("/",default=[False]).setResultsName("empty").setParseAction(lambda s,l,t:t[0]=='/') + Suppress(">")
+    closeTag = Combine(_L("</") + tagStr + ">")
+
+    openTag = openTag.setResultsName("start"+"".join(resname.replace(":"," ").title().split())).setName("<%s>" % resname)
+    closeTag = closeTag.setResultsName("end"+"".join(resname.replace(":"," ").title().split())).setName("</%s>" % resname)
+    openTag.tag = resname
+    closeTag.tag = resname
+    return openTag, closeTag
+
+def makeHTMLTags(tagStr):
+    """
+    Helper to construct opening and closing tag expressions for HTML, given a tag name. Matches
+    tags in either upper or lower case, attributes with namespaces and with quoted or unquoted values.
+
+    Example::
+        text = '<td>More info at the <a href="http://pyparsing.wikispaces.com">pyparsing</a> wiki page</td>'
+        # makeHTMLTags returns pyparsing expressions for the opening and closing tags as a 2-tuple
+        a,a_end = makeHTMLTags("A")
+        link_expr = a + SkipTo(a_end)("link_text") + a_end
+        
+        for link in link_expr.searchString(text):
+            # attributes in the <A> tag (like "href" shown here) are also accessible as named results
+            print(link.link_text, '->', link.href)
+    prints::
+        pyparsing -> http://pyparsing.wikispaces.com
+    """
+    return _makeTags( tagStr, False )
+
+def makeXMLTags(tagStr):
+    """
+    Helper to construct opening and closing tag expressions for XML, given a tag name. Matches
+    tags only in the given upper/lower case.
+
+    Example: similar to L{makeHTMLTags}
+    """
+    return _makeTags( tagStr, True )
+
+def withAttribute(*args,**attrDict):
+    """
+    Helper to create a validating parse action to be used with start tags created
+    with C{L{makeXMLTags}} or C{L{makeHTMLTags}}. Use C{withAttribute} to qualify a starting tag
+    with a required attribute value, to avoid false matches on common tags such as
+    C{<TD>} or C{<DIV>}.
+
+    Call C{withAttribute} with a series of attribute names and values. Specify the list
+    of filter attributes names and values as:
+     - keyword arguments, as in C{(align="right")}, or
+     - as an explicit dict with C{**} operator, when an attribute name is also a Python
+          reserved word, as in C{**{"class":"Customer", "align":"right"}}
+     - a list of name-value tuples, as in ( ("ns1:class", "Customer"), ("ns2:align","right") )
+    For attribute names with a namespace prefix, you must use the second form.  Attribute
+    names are matched insensitive to upper/lower case.
+       
+    If just testing for C{class} (with or without a namespace), use C{L{withClass}}.
+
+    To verify that the attribute exists, but without specifying a value, pass
+    C{withAttribute.ANY_VALUE} as the value.
+
+    Example::
+        html = '''
+            <div>
+            Some text
+            <div type="grid">1 4 0 1 0</div>
+            <div type="graph">1,3 2,3 1,1</div>
+            <div>this has no type</div>
+            </div>
+                
+        '''
+        div,div_end = makeHTMLTags("div")
+
+        # only match div tag having a type attribute with value "grid"
+        div_grid = div().setParseAction(withAttribute(type="grid"))
+        grid_expr = div_grid + SkipTo(div | div_end)("body")
+        for grid_header in grid_expr.searchString(html):
+            print(grid_header.body)
+        
+        # construct a match with any div tag having a type attribute, regardless of the value
+        div_any_type = div().setParseAction(withAttribute(type=withAttribute.ANY_VALUE))
+        div_expr = div_any_type + SkipTo(div | div_end)("body")
+        for div_header in div_expr.searchString(html):
+            print(div_header.body)
+    prints::
+        1 4 0 1 0
+
+        1 4 0 1 0
+        1,3 2,3 1,1
+    """
+    if args:
+        attrs = args[:]
+    else:
+        attrs = attrDict.items()
+    attrs = [(k,v) for k,v in attrs]
+    def pa(s,l,tokens):
+        for attrName,attrValue in attrs:
+            if attrName not in tokens:
+                raise ParseException(s,l,"no matching attribute " + attrName)
+            if attrValue != withAttribute.ANY_VALUE and tokens[attrName] != attrValue:
+                raise ParseException(s,l,"attribute '%s' has value '%s', must be '%s'" %
+                                            (attrName, tokens[attrName], attrValue))
+    return pa
+withAttribute.ANY_VALUE = object()
+
+def withClass(classname, namespace=''):
+    """
+    Simplified version of C{L{withAttribute}} when matching on a div class - made
+    difficult because C{class} is a reserved word in Python.
+
+    Example::
+        html = '''
+            <div>
+            Some text
+            <div class="grid">1 4 0 1 0</div>
+            <div class="graph">1,3 2,3 1,1</div>
+            <div>this &lt;div&gt; has no class</div>
+            </div>
+                
+        '''
+        div,div_end = makeHTMLTags("div")
+        div_grid = div().setParseAction(withClass("grid"))
+        
+        grid_expr = div_grid + SkipTo(div | div_end)("body")
+        for grid_header in grid_expr.searchString(html):
+            print(grid_header.body)
+        
+        div_any_type = div().setParseAction(withClass(withAttribute.ANY_VALUE))
+        div_expr = div_any_type + SkipTo(div | div_end)("body")
+        for div_header in div_expr.searchString(html):
+            print(div_header.body)
+    prints::
+        1 4 0 1 0
+
+        1 4 0 1 0
+        1,3 2,3 1,1
+    """
+    classattr = "%s:class" % namespace if namespace else "class"
+    return withAttribute(**{classattr : classname})        
+
+opAssoc = _Constants()
+opAssoc.LEFT = object()
+opAssoc.RIGHT = object()
+
+def infixNotation( baseExpr, opList, lpar=Suppress('('), rpar=Suppress(')') ):
+    """
+    Helper method for constructing grammars of expressions made up of
+    operators working in a precedence hierarchy.  Operators may be unary or
+    binary, left- or right-associative.  Parse actions can also be attached
+    to operator expressions. The generated parser will also recognize the use 
+    of parentheses to override operator precedences (see example below).
+    
+    Note: if you define a deep operator list, you may see performance issues
+    when using infixNotation. See L{ParserElement.enablePackrat} for a
+    mechanism to potentially improve your parser performance.
+
+    Parameters:
+     - baseExpr - expression representing the most basic element for the nested
+     - opList - list of tuples, one for each operator precedence level in the
+      expression grammar; each tuple is of the form
+      (opExpr, numTerms, rightLeftAssoc, parseAction), where:
+       - opExpr is the pyparsing expression for the operator;
+          may also be a string, which will be converted to a Literal;
+          if numTerms is 3, opExpr is a tuple of two expressions, for the
+          two operators separating the 3 terms
+       - numTerms is the number of terms for this operator (must
+          be 1, 2, or 3)
+       - rightLeftAssoc is the indicator whether the operator is
+          right or left associative, using the pyparsing-defined
+          constants C{opAssoc.RIGHT} and C{opAssoc.LEFT}.
+       - parseAction is the parse action to be associated with
+          expressions matching this operator expression (the
+          parse action tuple member may be omitted); if the parse action
+          is passed a tuple or list of functions, this is equivalent to
+          calling C{setParseAction(*fn)} (L{ParserElement.setParseAction})
+     - lpar - expression for matching left-parentheses (default=C{Suppress('(')})
+     - rpar - expression for matching right-parentheses (default=C{Suppress(')')})
+
+    Example::
+        # simple example of four-function arithmetic with ints and variable names
+        integer = pyparsing_common.signed_integer
+        varname = pyparsing_common.identifier 
+        
+        arith_expr = infixNotation(integer | varname,
+            [
+            ('-', 1, opAssoc.RIGHT),
+            (oneOf('* /'), 2, opAssoc.LEFT),
+            (oneOf('+ -'), 2, opAssoc.LEFT),
+            ])
+        
+        arith_expr.runTests('''
+            5+3*6
+            (5+3)*6
+            -2--11
+            ''', fullDump=False)
+    prints::
+        5+3*6
+        [[5, '+', [3, '*', 6]]]
+
+        (5+3)*6
+        [[[5, '+', 3], '*', 6]]
+
+        -2--11
+        [[['-', 2], '-', ['-', 11]]]
+    """
+    ret = Forward()
+    lastExpr = baseExpr | ( lpar + ret + rpar )
+    for i,operDef in enumerate(opList):
+        opExpr,arity,rightLeftAssoc,pa = (operDef + (None,))[:4]
+        termName = "%s term" % opExpr if arity < 3 else "%s%s term" % opExpr
+        if arity == 3:
+            if opExpr is None or len(opExpr) != 2:
+                raise ValueError("if numterms=3, opExpr must be a tuple or list of two expressions")
+            opExpr1, opExpr2 = opExpr
+        thisExpr = Forward().setName(termName)
+        if rightLeftAssoc == opAssoc.LEFT:
+            if arity == 1:
+                matchExpr = FollowedBy(lastExpr + opExpr) + Group( lastExpr + OneOrMore( opExpr ) )
+            elif arity == 2:
+                if opExpr is not None:
+                    matchExpr = FollowedBy(lastExpr + opExpr + lastExpr) + Group( lastExpr + OneOrMore( opExpr + lastExpr ) )
+                else:
+                    matchExpr = FollowedBy(lastExpr+lastExpr) + Group( lastExpr + OneOrMore(lastExpr) )
+            elif arity == 3:
+                matchExpr = FollowedBy(lastExpr + opExpr1 + lastExpr + opExpr2 + lastExpr) + \
+                            Group( lastExpr + opExpr1 + lastExpr + opExpr2 + lastExpr )
+            else:
+                raise ValueError("operator must be unary (1), binary (2), or ternary (3)")
+        elif rightLeftAssoc == opAssoc.RIGHT:
+            if arity == 1:
+                # try to avoid LR with this extra test
+                if not isinstance(opExpr, Optional):
+                    opExpr = Optional(opExpr)
+                matchExpr = FollowedBy(opExpr.expr + thisExpr) + Group( opExpr + thisExpr )
+            elif arity == 2:
+                if opExpr is not None:
+                    matchExpr = FollowedBy(lastExpr + opExpr + thisExpr) + Group( lastExpr + OneOrMore( opExpr + thisExpr ) )
+                else:
+                    matchExpr = FollowedBy(lastExpr + thisExpr) + Group( lastExpr + OneOrMore( thisExpr ) )
+            elif arity == 3:
+                matchExpr = FollowedBy(lastExpr + opExpr1 + thisExpr + opExpr2 + thisExpr) + \
+                            Group( lastExpr + opExpr1 + thisExpr + opExpr2 + thisExpr )
+            else:
+                raise ValueError("operator must be unary (1), binary (2), or ternary (3)")
+        else:
+            raise ValueError("operator must indicate right or left associativity")
+        if pa:
+            if isinstance(pa, (tuple, list)):
+                matchExpr.setParseAction(*pa)
+            else:
+                matchExpr.setParseAction(pa)
+        thisExpr <<= ( matchExpr.setName(termName) | lastExpr )
+        lastExpr = thisExpr
+    ret <<= lastExpr
+    return ret
+
+operatorPrecedence = infixNotation
+"""(Deprecated) Former name of C{L{infixNotation}}, will be dropped in a future release."""
+
+dblQuotedString = Combine(Regex(r'"(?:[^"\n\r\\]|(?:"")|(?:\\(?:[^x]|x[0-9a-fA-F]+)))*')+'"').setName("string enclosed in double quotes")
+sglQuotedString = Combine(Regex(r"'(?:[^'\n\r\\]|(?:'')|(?:\\(?:[^x]|x[0-9a-fA-F]+)))*")+"'").setName("string enclosed in single quotes")
+quotedString = Combine(Regex(r'"(?:[^"\n\r\\]|(?:"")|(?:\\(?:[^x]|x[0-9a-fA-F]+)))*')+'"'|
+                       Regex(r"'(?:[^'\n\r\\]|(?:'')|(?:\\(?:[^x]|x[0-9a-fA-F]+)))*")+"'").setName("quotedString using single or double quotes")
+unicodeString = Combine(_L('u') + quotedString.copy()).setName("unicode string literal")
+
+def nestedExpr(opener="(", closer=")", content=None, ignoreExpr=quotedString.copy()):
+    """
+    Helper method for defining nested lists enclosed in opening and closing
+    delimiters ("(" and ")" are the default).
+
+    Parameters:
+     - opener - opening character for a nested list (default=C{"("}); can also be a pyparsing expression
+     - closer - closing character for a nested list (default=C{")"}); can also be a pyparsing expression
+     - content - expression for items within the nested lists (default=C{None})
+     - ignoreExpr - expression for ignoring opening and closing delimiters (default=C{quotedString})
+
+    If an expression is not provided for the content argument, the nested
+    expression will capture all whitespace-delimited content between delimiters
+    as a list of separate values.
+
+    Use the C{ignoreExpr} argument to define expressions that may contain
+    opening or closing characters that should not be treated as opening
+    or closing characters for nesting, such as quotedString or a comment
+    expression.  Specify multiple expressions using an C{L{Or}} or C{L{MatchFirst}}.
+    The default is L{quotedString}, but if no expressions are to be ignored,
+    then pass C{None} for this argument.
+
+    Example::
+        data_type = oneOf("void int short long char float double")
+        decl_data_type = Combine(data_type + Optional(Word('*')))
+        ident = Word(alphas+'_', alphanums+'_')
+        number = pyparsing_common.number
+        arg = Group(decl_data_type + ident)
+        LPAR,RPAR = map(Suppress, "()")
+
+        code_body = nestedExpr('{', '}', ignoreExpr=(quotedString | cStyleComment))
+
+        c_function = (decl_data_type("type") 
+                      + ident("name")
+                      + LPAR + Optional(delimitedList(arg), [])("args") + RPAR 
+                      + code_body("body"))
+        c_function.ignore(cStyleComment)
+        
+        source_code = '''
+            int is_odd(int x) { 
+                return (x%2); 
+            }
+                
+            int dec_to_hex(char hchar) { 
+                if (hchar >= '0' && hchar <= '9') { 
+                    return (ord(hchar)-ord('0')); 
+                } else { 
+                    return (10+ord(hchar)-ord('A'));
+                } 
+            }
+        '''
+        for func in c_function.searchString(source_code):
+            print("%(name)s (%(type)s) args: %(args)s" % func)
+
+    prints::
+        is_odd (int) args: [['int', 'x']]
+        dec_to_hex (int) args: [['char', 'hchar']]
+    """
+    if opener == closer:
+        raise ValueError("opening and closing strings cannot be the same")
+    if content is None:
+        if isinstance(opener,basestring) and isinstance(closer,basestring):
+            if len(opener) == 1 and len(closer)==1:
+                if ignoreExpr is not None:
+                    content = (Combine(OneOrMore(~ignoreExpr +
+                                    CharsNotIn(opener+closer+ParserElement.DEFAULT_WHITE_CHARS,exact=1))
+                                ).setParseAction(lambda t:t[0].strip()))
+                else:
+                    content = (empty.copy()+CharsNotIn(opener+closer+ParserElement.DEFAULT_WHITE_CHARS
+                                ).setParseAction(lambda t:t[0].strip()))
+            else:
+                if ignoreExpr is not None:
+                    content = (Combine(OneOrMore(~ignoreExpr + 
+                                    ~Literal(opener) + ~Literal(closer) +
+                                    CharsNotIn(ParserElement.DEFAULT_WHITE_CHARS,exact=1))
+                                ).setParseAction(lambda t:t[0].strip()))
+                else:
+                    content = (Combine(OneOrMore(~Literal(opener) + ~Literal(closer) +
+                                    CharsNotIn(ParserElement.DEFAULT_WHITE_CHARS,exact=1))
+                                ).setParseAction(lambda t:t[0].strip()))
+        else:
+            raise ValueError("opening and closing arguments must be strings if no content expression is given")
+    ret = Forward()
+    if ignoreExpr is not None:
+        ret <<= Group( Suppress(opener) + ZeroOrMore( ignoreExpr | ret | content ) + Suppress(closer) )
+    else:
+        ret <<= Group( Suppress(opener) + ZeroOrMore( ret | content )  + Suppress(closer) )
+    ret.setName('nested %s%s expression' % (opener,closer))
+    return ret
+
+def indentedBlock(blockStatementExpr, indentStack, indent=True):
+    """
+    Helper method for defining space-delimited indentation blocks, such as
+    those used to define block statements in Python source code.
+
+    Parameters:
+     - blockStatementExpr - expression defining syntax of statement that
+            is repeated within the indented block
+     - indentStack - list created by caller to manage indentation stack
+            (multiple statementWithIndentedBlock expressions within a single grammar
+            should share a common indentStack)
+     - indent - boolean indicating whether block must be indented beyond the
+            the current level; set to False for block of left-most statements
+            (default=C{True})
+
+    A valid block must contain at least one C{blockStatement}.
+
+    Example::
+        data = '''
+        def A(z):
+          A1
+          B = 100
+          G = A2
+          A2
+          A3
+        B
+        def BB(a,b,c):
+          BB1
+          def BBA():
+            bba1
+            bba2
+            bba3
+        C
+        D
+        def spam(x,y):
+             def eggs(z):
+                 pass
+        '''
+
+
+        indentStack = [1]
+        stmt = Forward()
+
+        identifier = Word(alphas, alphanums)
+        funcDecl = ("def" + identifier + Group( "(" + Optional( delimitedList(identifier) ) + ")" ) + ":")
+        func_body = indentedBlock(stmt, indentStack)
+        funcDef = Group( funcDecl + func_body )
+
+        rvalue = Forward()
+        funcCall = Group(identifier + "(" + Optional(delimitedList(rvalue)) + ")")
+        rvalue << (funcCall | identifier | Word(nums))
+        assignment = Group(identifier + "=" + rvalue)
+        stmt << ( funcDef | assignment | identifier )
+
+        module_body = OneOrMore(stmt)
+
+        parseTree = module_body.parseString(data)
+        parseTree.pprint()
+    prints::
+        [['def',
+          'A',
+          ['(', 'z', ')'],
+          ':',
+          [['A1'], [['B', '=', '100']], [['G', '=', 'A2']], ['A2'], ['A3']]],
+         'B',
+         ['def',
+          'BB',
+          ['(', 'a', 'b', 'c', ')'],
+          ':',
+          [['BB1'], [['def', 'BBA', ['(', ')'], ':', [['bba1'], ['bba2'], ['bba3']]]]]],
+         'C',
+         'D',
+         ['def',
+          'spam',
+          ['(', 'x', 'y', ')'],
+          ':',
+          [[['def', 'eggs', ['(', 'z', ')'], ':', [['pass']]]]]]] 
+    """
+    def checkPeerIndent(s,l,t):
+        if l >= len(s): return
+        curCol = col(l,s)
+        if curCol != indentStack[-1]:
+            if curCol > indentStack[-1]:
+                raise ParseFatalException(s,l,"illegal nesting")
+            raise ParseException(s,l,"not a peer entry")
+
+    def checkSubIndent(s,l,t):
+        curCol = col(l,s)
+        if curCol > indentStack[-1]:
+            indentStack.append( curCol )
+        else:
+            raise ParseException(s,l,"not a subentry")
+
+    def checkUnindent(s,l,t):
+        if l >= len(s): return
+        curCol = col(l,s)
+        if not(indentStack and curCol < indentStack[-1] and curCol <= indentStack[-2]):
+            raise ParseException(s,l,"not an unindent")
+        indentStack.pop()
+
+    NL = OneOrMore(LineEnd().setWhitespaceChars("\t ").suppress())
+    INDENT = (Empty() + Empty().setParseAction(checkSubIndent)).setName('INDENT')
+    PEER   = Empty().setParseAction(checkPeerIndent).setName('')
+    UNDENT = Empty().setParseAction(checkUnindent).setName('UNINDENT')
+    if indent:
+        smExpr = Group( Optional(NL) +
+            #~ FollowedBy(blockStatementExpr) +
+            INDENT + (OneOrMore( PEER + Group(blockStatementExpr) + Optional(NL) )) + UNDENT)
+    else:
+        smExpr = Group( Optional(NL) +
+            (OneOrMore( PEER + Group(blockStatementExpr) + Optional(NL) )) )
+    blockStatementExpr.ignore(_bslash + LineEnd())
+    return smExpr.setName('indented block')
+
+alphas8bit = srange(r"[\0xc0-\0xd6\0xd8-\0xf6\0xf8-\0xff]")
+punc8bit = srange(r"[\0xa1-\0xbf\0xd7\0xf7]")
+
+anyOpenTag,anyCloseTag = makeHTMLTags(Word(alphas,alphanums+"_:").setName('any tag'))
+_htmlEntityMap = dict(zip("gt lt amp nbsp quot apos".split(),'><& "\''))
+commonHTMLEntity = Regex('&(?P<entity>' + '|'.join(_htmlEntityMap.keys()) +");").setName("common HTML entity")
+def replaceHTMLEntity(t):
+    """Helper parser action to replace common HTML entities with their special characters"""
+    return _htmlEntityMap.get(t.entity)
+
+# it's easy to get these comment structures wrong - they're very common, so may as well make them available
+cStyleComment = Combine(Regex(r"/\*(?:[^*]|\*(?!/))*") + '*/').setName("C style comment")
+"Comment of the form C{/* ... */}"
+
+htmlComment = Regex(r"<!--[\s\S]*?-->").setName("HTML comment")
+"Comment of the form C{<!-- ... -->}"
+
+restOfLine = Regex(r".*").leaveWhitespace().setName("rest of line")
+dblSlashComment = Regex(r"//(?:\\\n|[^\n])*").setName("// comment")
+"Comment of the form C{// ... (to end of line)}"
+
+cppStyleComment = Combine(Regex(r"/\*(?:[^*]|\*(?!/))*") + '*/'| dblSlashComment).setName("C++ style comment")
+"Comment of either form C{L{cStyleComment}} or C{L{dblSlashComment}}"
+
+javaStyleComment = cppStyleComment
+"Same as C{L{cppStyleComment}}"
+
+pythonStyleComment = Regex(r"#.*").setName("Python style comment")
+"Comment of the form C{# ... (to end of line)}"
+
+_commasepitem = Combine(OneOrMore(Word(printables, excludeChars=',') +
+                                  Optional( Word(" \t") +
+                                            ~Literal(",") + ~LineEnd() ) ) ).streamline().setName("commaItem")
+commaSeparatedList = delimitedList( Optional( quotedString.copy() | _commasepitem, default="") ).setName("commaSeparatedList")
+"""(Deprecated) Predefined expression of 1 or more printable words or quoted strings, separated by commas.
+   This expression is deprecated in favor of L{pyparsing_common.comma_separated_list}."""
+
+# some other useful expressions - using lower-case class name since we are really using this as a namespace
+class pyparsing_common:
+    """
+    Here are some common low-level expressions that may be useful in jump-starting parser development:
+     - numeric forms (L{integers<integer>}, L{reals<real>}, L{scientific notation<sci_real>})
+     - common L{programming identifiers<identifier>}
+     - network addresses (L{MAC<mac_address>}, L{IPv4<ipv4_address>}, L{IPv6<ipv6_address>})
+     - ISO8601 L{dates<iso8601_date>} and L{datetime<iso8601_datetime>}
+     - L{UUID<uuid>}
+     - L{comma-separated list<comma_separated_list>}
+    Parse actions:
+     - C{L{convertToInteger}}
+     - C{L{convertToFloat}}
+     - C{L{convertToDate}}
+     - C{L{convertToDatetime}}
+     - C{L{stripHTMLTags}}
+     - C{L{upcaseTokens}}
+     - C{L{downcaseTokens}}
+
+    Example::
+        pyparsing_common.number.runTests('''
+            # any int or real number, returned as the appropriate type
+            100
+            -100
+            +100
+            3.14159
+            6.02e23
+            1e-12
+            ''')
+
+        pyparsing_common.fnumber.runTests('''
+            # any int or real number, returned as float
+            100
+            -100
+            +100
+            3.14159
+            6.02e23
+            1e-12
+            ''')
+
+        pyparsing_common.hex_integer.runTests('''
+            # hex numbers
+            100
+            FF
+            ''')
+
+        pyparsing_common.fraction.runTests('''
+            # fractions
+            1/2
+            -3/4
+            ''')
+
+        pyparsing_common.mixed_integer.runTests('''
+            # mixed fractions
+            1
+            1/2
+            -3/4
+            1-3/4
+            ''')
+
+        import uuid
+        pyparsing_common.uuid.setParseAction(tokenMap(uuid.UUID))
+        pyparsing_common.uuid.runTests('''
+            # uuid
+            12345678-1234-5678-1234-567812345678
+            ''')
+    prints::
+        # any int or real number, returned as the appropriate type
+        100
+        [100]
+
+        -100
+        [-100]
+
+        +100
+        [100]
+
+        3.14159
+        [3.14159]
+
+        6.02e23
+        [6.02e+23]
+
+        1e-12
+        [1e-12]
+
+        # any int or real number, returned as float
+        100
+        [100.0]
+
+        -100
+        [-100.0]
+
+        +100
+        [100.0]
+
+        3.14159
+        [3.14159]
+
+        6.02e23
+        [6.02e+23]
+
+        1e-12
+        [1e-12]
+
+        # hex numbers
+        100
+        [256]
+
+        FF
+        [255]
+
+        # fractions
+        1/2
+        [0.5]
+
+        -3/4
+        [-0.75]
+
+        # mixed fractions
+        1
+        [1]
+
+        1/2
+        [0.5]
+
+        -3/4
+        [-0.75]
+
+        1-3/4
+        [1.75]
+
+        # uuid
+        12345678-1234-5678-1234-567812345678
+        [UUID('12345678-1234-5678-1234-567812345678')]
+    """
+
+    convertToInteger = tokenMap(int)
+    """
+    Parse action for converting parsed integers to Python int
+    """
+
+    convertToFloat = tokenMap(float)
+    """
+    Parse action for converting parsed numbers to Python float
+    """
+
+    integer = Word(nums).setName("integer").setParseAction(convertToInteger)
+    """expression that parses an unsigned integer, returns an int"""
+
+    hex_integer = Word(hexnums).setName("hex integer").setParseAction(tokenMap(int,16))
+    """expression that parses a hexadecimal integer, returns an int"""
+
+    signed_integer = Regex(r'[+-]?\d+').setName("signed integer").setParseAction(convertToInteger)
+    """expression that parses an integer with optional leading sign, returns an int"""
+
+    fraction = (signed_integer().setParseAction(convertToFloat) + '/' + signed_integer().setParseAction(convertToFloat)).setName("fraction")
+    """fractional expression of an integer divided by an integer, returns a float"""
+    fraction.addParseAction(lambda t: t[0]/t[-1])
+
+    mixed_integer = (fraction | signed_integer + Optional(Optional('-').suppress() + fraction)).setName("fraction or mixed integer-fraction")
+    """mixed integer of the form 'integer - fraction', with optional leading integer, returns float"""
+    mixed_integer.addParseAction(sum)
+
+    real = Regex(r'[+-]?\d+\.\d*').setName("real number").setParseAction(convertToFloat)
+    """expression that parses a floating point number and returns a float"""
+
+    sci_real = Regex(r'[+-]?\d+([eE][+-]?\d+|\.\d*([eE][+-]?\d+)?)').setName("real number with scientific notation").setParseAction(convertToFloat)
+    """expression that parses a floating point number with optional scientific notation and returns a float"""
+
+    # streamlining this expression makes the docs nicer-looking
+    number = (sci_real | real | signed_integer).streamline()
+    """any numeric expression, returns the corresponding Python type"""
+
+    fnumber = Regex(r'[+-]?\d+\.?\d*([eE][+-]?\d+)?').setName("fnumber").setParseAction(convertToFloat)
+    """any int or real number, returned as float"""
+    
+    identifier = Word(alphas+'_', alphanums+'_').setName("identifier")
+    """typical code identifier (leading alpha or '_', followed by 0 or more alphas, nums, or '_')"""
+    
+    ipv4_address = Regex(r'(25[0-5]|2[0-4][0-9]|1?[0-9]{1,2})(\.(25[0-5]|2[0-4][0-9]|1?[0-9]{1,2})){3}').setName("IPv4 address")
+    "IPv4 address (C{0.0.0.0 - 255.255.255.255})"
+
+    _ipv6_part = Regex(r'[0-9a-fA-F]{1,4}').setName("hex_integer")
+    _full_ipv6_address = (_ipv6_part + (':' + _ipv6_part)*7).setName("full IPv6 address")
+    _short_ipv6_address = (Optional(_ipv6_part + (':' + _ipv6_part)*(0,6)) + "::" + Optional(_ipv6_part + (':' + _ipv6_part)*(0,6))).setName("short IPv6 address")
+    _short_ipv6_address.addCondition(lambda t: sum(1 for tt in t if pyparsing_common._ipv6_part.matches(tt)) < 8)
+    _mixed_ipv6_address = ("::ffff:" + ipv4_address).setName("mixed IPv6 address")
+    ipv6_address = Combine((_full_ipv6_address | _mixed_ipv6_address | _short_ipv6_address).setName("IPv6 address")).setName("IPv6 address")
+    "IPv6 address (long, short, or mixed form)"
+    
+    mac_address = Regex(r'[0-9a-fA-F]{2}([:.-])[0-9a-fA-F]{2}(?:\1[0-9a-fA-F]{2}){4}').setName("MAC address")
+    "MAC address xx:xx:xx:xx:xx (may also have '-' or '.' delimiters)"
+
+    @staticmethod
+    def convertToDate(fmt="%Y-%m-%d"):
+        """
+        Helper to create a parse action for converting parsed date string to Python datetime.date
+
+        Params -
+         - fmt - format to be passed to datetime.strptime (default=C{"%Y-%m-%d"})
+
+        Example::
+            date_expr = pyparsing_common.iso8601_date.copy()
+            date_expr.setParseAction(pyparsing_common.convertToDate())
+            print(date_expr.parseString("1999-12-31"))
+        prints::
+            [datetime.date(1999, 12, 31)]
+        """
+        def cvt_fn(s,l,t):
+            try:
+                return datetime.strptime(t[0], fmt).date()
+            except ValueError as ve:
+                raise ParseException(s, l, str(ve))
+        return cvt_fn
+
+    @staticmethod
+    def convertToDatetime(fmt="%Y-%m-%dT%H:%M:%S.%f"):
+        """
+        Helper to create a parse action for converting parsed datetime string to Python datetime.datetime
+
+        Params -
+         - fmt - format to be passed to datetime.strptime (default=C{"%Y-%m-%dT%H:%M:%S.%f"})
+
+        Example::
+            dt_expr = pyparsing_common.iso8601_datetime.copy()
+            dt_expr.setParseAction(pyparsing_common.convertToDatetime())
+            print(dt_expr.parseString("1999-12-31T23:59:59.999"))
+        prints::
+            [datetime.datetime(1999, 12, 31, 23, 59, 59, 999000)]
+        """
+        def cvt_fn(s,l,t):
+            try:
+                return datetime.strptime(t[0], fmt)
+            except ValueError as ve:
+                raise ParseException(s, l, str(ve))
+        return cvt_fn
+
+    iso8601_date = Regex(r'(?P<year>\d{4})(?:-(?P<month>\d\d)(?:-(?P<day>\d\d))?)?').setName("ISO8601 date")
+    "ISO8601 date (C{yyyy-mm-dd})"
+
+    iso8601_datetime = Regex(r'(?P<year>\d{4})-(?P<month>\d\d)-(?P<day>\d\d)[T ](?P<hour>\d\d):(?P<minute>\d\d)(:(?P<second>\d\d(\.\d*)?)?)?(?P<tz>Z|[+-]\d\d:?\d\d)?').setName("ISO8601 datetime")
+    "ISO8601 datetime (C{yyyy-mm-ddThh:mm:ss.s(Z|+-00:00)}) - trailing seconds, milliseconds, and timezone optional; accepts separating C{'T'} or C{' '}"
+
+    uuid = Regex(r'[0-9a-fA-F]{8}(-[0-9a-fA-F]{4}){3}-[0-9a-fA-F]{12}').setName("UUID")
+    "UUID (C{xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx})"
+
+    _html_stripper = anyOpenTag.suppress() | anyCloseTag.suppress()
+    @staticmethod
+    def stripHTMLTags(s, l, tokens):
+        """
+        Parse action to remove HTML tags from web page HTML source
+
+        Example::
+            # strip HTML links from normal text 
+            text = '<td>More info at the <a href="http://pyparsing.wikispaces.com">pyparsing</a> wiki page</td>'
+            td,td_end = makeHTMLTags("TD")
+            table_text = td + SkipTo(td_end).setParseAction(pyparsing_common.stripHTMLTags)("body") + td_end
+            
+            print(table_text.parseString(text).body) # -> 'More info at the pyparsing wiki page'
+        """
+        return pyparsing_common._html_stripper.transformString(tokens[0])
+
+    _commasepitem = Combine(OneOrMore(~Literal(",") + ~LineEnd() + Word(printables, excludeChars=',') 
+                                        + Optional( White(" \t") ) ) ).streamline().setName("commaItem")
+    comma_separated_list = delimitedList( Optional( quotedString.copy() | _commasepitem, default="") ).setName("comma separated list")
+    """Predefined expression of 1 or more printable words or quoted strings, separated by commas."""
+
+    upcaseTokens = staticmethod(tokenMap(lambda t: _ustr(t).upper()))
+    """Parse action to convert tokens to upper case."""
+
+    downcaseTokens = staticmethod(tokenMap(lambda t: _ustr(t).lower()))
+    """Parse action to convert tokens to lower case."""
+
+
+if __name__ == "__main__":
+
+    selectToken    = CaselessLiteral("select")
+    fromToken      = CaselessLiteral("from")
+
+    ident          = Word(alphas, alphanums + "_$")
+
+    columnName     = delimitedList(ident, ".", combine=True).setParseAction(upcaseTokens)
+    columnNameList = Group(delimitedList(columnName)).setName("columns")
+    columnSpec     = ('*' | columnNameList)
+
+    tableName      = delimitedList(ident, ".", combine=True).setParseAction(upcaseTokens)
+    tableNameList  = Group(delimitedList(tableName)).setName("tables")
+    
+    simpleSQL      = selectToken("command") + columnSpec("columns") + fromToken + tableNameList("tables")
+
+    # demo runTests method, including embedded comments in test string
+    simpleSQL.runTests("""
+        # '*' as column list and dotted table name
+        select * from SYS.XYZZY
+
+        # caseless match on "SELECT", and casts back to "select"
+        SELECT * from XYZZY, ABC
+
+        # list of column names, and mixed case SELECT keyword
+        Select AA,BB,CC from Sys.dual
+
+        # multiple tables
+        Select A, B, C from Sys.dual, Table2
+
+        # invalid SELECT keyword - should fail
+        Xelect A, B, C from Sys.dual
+
+        # incomplete command - should fail
+        Select
+
+        # invalid column name - should fail
+        Select ^^^ frox Sys.dual
+
+        """)
+
+    pyparsing_common.number.runTests("""
+        100
+        -100
+        +100
+        3.14159
+        6.02e23
+        1e-12
+        """)
+
+    # any int or real number, returned as float
+    pyparsing_common.fnumber.runTests("""
+        100
+        -100
+        +100
+        3.14159
+        6.02e23
+        1e-12
+        """)
+
+    pyparsing_common.hex_integer.runTests("""
+        100
+        FF
+        """)
+
+    import uuid
+    pyparsing_common.uuid.setParseAction(tokenMap(uuid.UUID))
+    pyparsing_common.uuid.runTests("""
+        12345678-1234-5678-1234-567812345678
+        """)
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diff --git a/venv/Lib/site-packages/setuptools/_vendor/pyparsing.py b/venv/Lib/site-packages/setuptools/_vendor/pyparsing.py
index 4aa30ee6b250b3b72a9dcebb7f26a8e0432d7082..cf75e1e5fcbfe7eac41d2a9e446c5c980741087b 100644
--- a/venv/Lib/site-packages/setuptools/_vendor/pyparsing.py
+++ b/venv/Lib/site-packages/setuptools/_vendor/pyparsing.py
@@ -1,5742 +1,5742 @@
-# module pyparsing.py
-#
-# Copyright (c) 2003-2018  Paul T. McGuire
-#
-# Permission is hereby granted, free of charge, to any person obtaining
-# a copy of this software and associated documentation files (the
-# "Software"), to deal in the Software without restriction, including
-# without limitation the rights to use, copy, modify, merge, publish,
-# distribute, sublicense, and/or sell copies of the Software, and to
-# permit persons to whom the Software is furnished to do so, subject to
-# the following conditions:
-#
-# The above copyright notice and this permission notice shall be
-# included in all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
-# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
-# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
-# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
-# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-#
-
-__doc__ = \
-"""
-pyparsing module - Classes and methods to define and execute parsing grammars
-=============================================================================
-
-The pyparsing module is an alternative approach to creating and executing simple grammars,
-vs. the traditional lex/yacc approach, or the use of regular expressions.  With pyparsing, you
-don't need to learn a new syntax for defining grammars or matching expressions - the parsing module
-provides a library of classes that you use to construct the grammar directly in Python.
-
-Here is a program to parse "Hello, World!" (or any greeting of the form 
-C{"<salutation>, <addressee>!"}), built up using L{Word}, L{Literal}, and L{And} elements 
-(L{'+'<ParserElement.__add__>} operator gives L{And} expressions, strings are auto-converted to
-L{Literal} expressions)::
-
-    from pyparsing import Word, alphas
-
-    # define grammar of a greeting
-    greet = Word(alphas) + "," + Word(alphas) + "!"
-
-    hello = "Hello, World!"
-    print (hello, "->", greet.parseString(hello))
-
-The program outputs the following::
-
-    Hello, World! -> ['Hello', ',', 'World', '!']
-
-The Python representation of the grammar is quite readable, owing to the self-explanatory
-class names, and the use of '+', '|' and '^' operators.
-
-The L{ParseResults} object returned from L{ParserElement.parseString<ParserElement.parseString>} can be accessed as a nested list, a dictionary, or an
-object with named attributes.
-
-The pyparsing module handles some of the problems that are typically vexing when writing text parsers:
- - extra or missing whitespace (the above program will also handle "Hello,World!", "Hello  ,  World  !", etc.)
- - quoted strings
- - embedded comments
-
-
-Getting Started -
------------------
-Visit the classes L{ParserElement} and L{ParseResults} to see the base classes that most other pyparsing
-classes inherit from. Use the docstrings for examples of how to:
- - construct literal match expressions from L{Literal} and L{CaselessLiteral} classes
- - construct character word-group expressions using the L{Word} class
- - see how to create repetitive expressions using L{ZeroOrMore} and L{OneOrMore} classes
- - use L{'+'<And>}, L{'|'<MatchFirst>}, L{'^'<Or>}, and L{'&'<Each>} operators to combine simple expressions into more complex ones
- - associate names with your parsed results using L{ParserElement.setResultsName}
- - find some helpful expression short-cuts like L{delimitedList} and L{oneOf}
- - find more useful common expressions in the L{pyparsing_common} namespace class
-"""
-
-__version__ = "2.2.1"
-__versionTime__ = "18 Sep 2018 00:49 UTC"
-__author__ = "Paul McGuire <ptmcg@users.sourceforge.net>"
-
-import string
-from weakref import ref as wkref
-import copy
-import sys
-import warnings
-import re
-import sre_constants
-import collections
-import pprint
-import traceback
-import types
-from datetime import datetime
-
-try:
-    from _thread import RLock
-except ImportError:
-    from threading import RLock
-
-try:
-    # Python 3
-    from collections.abc import Iterable
-    from collections.abc import MutableMapping
-except ImportError:
-    # Python 2.7
-    from collections import Iterable
-    from collections import MutableMapping
-
-try:
-    from collections import OrderedDict as _OrderedDict
-except ImportError:
-    try:
-        from ordereddict import OrderedDict as _OrderedDict
-    except ImportError:
-        _OrderedDict = None
-
-#~ sys.stderr.write( "testing pyparsing module, version %s, %s\n" % (__version__,__versionTime__ ) )
-
-__all__ = [
-'And', 'CaselessKeyword', 'CaselessLiteral', 'CharsNotIn', 'Combine', 'Dict', 'Each', 'Empty',
-'FollowedBy', 'Forward', 'GoToColumn', 'Group', 'Keyword', 'LineEnd', 'LineStart', 'Literal',
-'MatchFirst', 'NoMatch', 'NotAny', 'OneOrMore', 'OnlyOnce', 'Optional', 'Or',
-'ParseBaseException', 'ParseElementEnhance', 'ParseException', 'ParseExpression', 'ParseFatalException',
-'ParseResults', 'ParseSyntaxException', 'ParserElement', 'QuotedString', 'RecursiveGrammarException',
-'Regex', 'SkipTo', 'StringEnd', 'StringStart', 'Suppress', 'Token', 'TokenConverter', 
-'White', 'Word', 'WordEnd', 'WordStart', 'ZeroOrMore',
-'alphanums', 'alphas', 'alphas8bit', 'anyCloseTag', 'anyOpenTag', 'cStyleComment', 'col',
-'commaSeparatedList', 'commonHTMLEntity', 'countedArray', 'cppStyleComment', 'dblQuotedString',
-'dblSlashComment', 'delimitedList', 'dictOf', 'downcaseTokens', 'empty', 'hexnums',
-'htmlComment', 'javaStyleComment', 'line', 'lineEnd', 'lineStart', 'lineno',
-'makeHTMLTags', 'makeXMLTags', 'matchOnlyAtCol', 'matchPreviousExpr', 'matchPreviousLiteral',
-'nestedExpr', 'nullDebugAction', 'nums', 'oneOf', 'opAssoc', 'operatorPrecedence', 'printables',
-'punc8bit', 'pythonStyleComment', 'quotedString', 'removeQuotes', 'replaceHTMLEntity', 
-'replaceWith', 'restOfLine', 'sglQuotedString', 'srange', 'stringEnd',
-'stringStart', 'traceParseAction', 'unicodeString', 'upcaseTokens', 'withAttribute',
-'indentedBlock', 'originalTextFor', 'ungroup', 'infixNotation','locatedExpr', 'withClass',
-'CloseMatch', 'tokenMap', 'pyparsing_common',
-]
-
-system_version = tuple(sys.version_info)[:3]
-PY_3 = system_version[0] == 3
-if PY_3:
-    _MAX_INT = sys.maxsize
-    basestring = str
-    unichr = chr
-    _ustr = str
-
-    # build list of single arg builtins, that can be used as parse actions
-    singleArgBuiltins = [sum, len, sorted, reversed, list, tuple, set, any, all, min, max]
-
-else:
-    _MAX_INT = sys.maxint
-    range = xrange
-
-    def _ustr(obj):
-        """Drop-in replacement for str(obj) that tries to be Unicode friendly. It first tries
-           str(obj). If that fails with a UnicodeEncodeError, then it tries unicode(obj). It
-           then < returns the unicode object | encodes it with the default encoding | ... >.
-        """
-        if isinstance(obj,unicode):
-            return obj
-
-        try:
-            # If this works, then _ustr(obj) has the same behaviour as str(obj), so
-            # it won't break any existing code.
-            return str(obj)
-
-        except UnicodeEncodeError:
-            # Else encode it
-            ret = unicode(obj).encode(sys.getdefaultencoding(), 'xmlcharrefreplace')
-            xmlcharref = Regex(r'&#\d+;')
-            xmlcharref.setParseAction(lambda t: '\\u' + hex(int(t[0][2:-1]))[2:])
-            return xmlcharref.transformString(ret)
-
-    # build list of single arg builtins, tolerant of Python version, that can be used as parse actions
-    singleArgBuiltins = []
-    import __builtin__
-    for fname in "sum len sorted reversed list tuple set any all min max".split():
-        try:
-            singleArgBuiltins.append(getattr(__builtin__,fname))
-        except AttributeError:
-            continue
-            
-_generatorType = type((y for y in range(1)))
- 
-def _xml_escape(data):
-    """Escape &, <, >, ", ', etc. in a string of data."""
-
-    # ampersand must be replaced first
-    from_symbols = '&><"\''
-    to_symbols = ('&'+s+';' for s in "amp gt lt quot apos".split())
-    for from_,to_ in zip(from_symbols, to_symbols):
-        data = data.replace(from_, to_)
-    return data
-
-class _Constants(object):
-    pass
-
-alphas     = string.ascii_uppercase + string.ascii_lowercase
-nums       = "0123456789"
-hexnums    = nums + "ABCDEFabcdef"
-alphanums  = alphas + nums
-_bslash    = chr(92)
-printables = "".join(c for c in string.printable if c not in string.whitespace)
-
-class ParseBaseException(Exception):
-    """base exception class for all parsing runtime exceptions"""
-    # Performance tuning: we construct a *lot* of these, so keep this
-    # constructor as small and fast as possible
-    def __init__( self, pstr, loc=0, msg=None, elem=None ):
-        self.loc = loc
-        if msg is None:
-            self.msg = pstr
-            self.pstr = ""
-        else:
-            self.msg = msg
-            self.pstr = pstr
-        self.parserElement = elem
-        self.args = (pstr, loc, msg)
-
-    @classmethod
-    def _from_exception(cls, pe):
-        """
-        internal factory method to simplify creating one type of ParseException 
-        from another - avoids having __init__ signature conflicts among subclasses
-        """
-        return cls(pe.pstr, pe.loc, pe.msg, pe.parserElement)
-
-    def __getattr__( self, aname ):
-        """supported attributes by name are:
-            - lineno - returns the line number of the exception text
-            - col - returns the column number of the exception text
-            - line - returns the line containing the exception text
-        """
-        if( aname == "lineno" ):
-            return lineno( self.loc, self.pstr )
-        elif( aname in ("col", "column") ):
-            return col( self.loc, self.pstr )
-        elif( aname == "line" ):
-            return line( self.loc, self.pstr )
-        else:
-            raise AttributeError(aname)
-
-    def __str__( self ):
-        return "%s (at char %d), (line:%d, col:%d)" % \
-                ( self.msg, self.loc, self.lineno, self.column )
-    def __repr__( self ):
-        return _ustr(self)
-    def markInputline( self, markerString = ">!<" ):
-        """Extracts the exception line from the input string, and marks
-           the location of the exception with a special symbol.
-        """
-        line_str = self.line
-        line_column = self.column - 1
-        if markerString:
-            line_str = "".join((line_str[:line_column],
-                                markerString, line_str[line_column:]))
-        return line_str.strip()
-    def __dir__(self):
-        return "lineno col line".split() + dir(type(self))
-
-class ParseException(ParseBaseException):
-    """
-    Exception thrown when parse expressions don't match class;
-    supported attributes by name are:
-     - lineno - returns the line number of the exception text
-     - col - returns the column number of the exception text
-     - line - returns the line containing the exception text
-        
-    Example::
-        try:
-            Word(nums).setName("integer").parseString("ABC")
-        except ParseException as pe:
-            print(pe)
-            print("column: {}".format(pe.col))
-            
-    prints::
-       Expected integer (at char 0), (line:1, col:1)
-        column: 1
-    """
-    pass
-
-class ParseFatalException(ParseBaseException):
-    """user-throwable exception thrown when inconsistent parse content
-       is found; stops all parsing immediately"""
-    pass
-
-class ParseSyntaxException(ParseFatalException):
-    """just like L{ParseFatalException}, but thrown internally when an
-       L{ErrorStop<And._ErrorStop>} ('-' operator) indicates that parsing is to stop 
-       immediately because an unbacktrackable syntax error has been found"""
-    pass
-
-#~ class ReparseException(ParseBaseException):
-    #~ """Experimental class - parse actions can raise this exception to cause
-       #~ pyparsing to reparse the input string:
-        #~ - with a modified input string, and/or
-        #~ - with a modified start location
-       #~ Set the values of the ReparseException in the constructor, and raise the
-       #~ exception in a parse action to cause pyparsing to use the new string/location.
-       #~ Setting the values as None causes no change to be made.
-       #~ """
-    #~ def __init_( self, newstring, restartLoc ):
-        #~ self.newParseText = newstring
-        #~ self.reparseLoc = restartLoc
-
-class RecursiveGrammarException(Exception):
-    """exception thrown by L{ParserElement.validate} if the grammar could be improperly recursive"""
-    def __init__( self, parseElementList ):
-        self.parseElementTrace = parseElementList
-
-    def __str__( self ):
-        return "RecursiveGrammarException: %s" % self.parseElementTrace
-
-class _ParseResultsWithOffset(object):
-    def __init__(self,p1,p2):
-        self.tup = (p1,p2)
-    def __getitem__(self,i):
-        return self.tup[i]
-    def __repr__(self):
-        return repr(self.tup[0])
-    def setOffset(self,i):
-        self.tup = (self.tup[0],i)
-
-class ParseResults(object):
-    """
-    Structured parse results, to provide multiple means of access to the parsed data:
-       - as a list (C{len(results)})
-       - by list index (C{results[0], results[1]}, etc.)
-       - by attribute (C{results.<resultsName>} - see L{ParserElement.setResultsName})
-
-    Example::
-        integer = Word(nums)
-        date_str = (integer.setResultsName("year") + '/' 
-                        + integer.setResultsName("month") + '/' 
-                        + integer.setResultsName("day"))
-        # equivalent form:
-        # date_str = integer("year") + '/' + integer("month") + '/' + integer("day")
-
-        # parseString returns a ParseResults object
-        result = date_str.parseString("1999/12/31")
-
-        def test(s, fn=repr):
-            print("%s -> %s" % (s, fn(eval(s))))
-        test("list(result)")
-        test("result[0]")
-        test("result['month']")
-        test("result.day")
-        test("'month' in result")
-        test("'minutes' in result")
-        test("result.dump()", str)
-    prints::
-        list(result) -> ['1999', '/', '12', '/', '31']
-        result[0] -> '1999'
-        result['month'] -> '12'
-        result.day -> '31'
-        'month' in result -> True
-        'minutes' in result -> False
-        result.dump() -> ['1999', '/', '12', '/', '31']
-        - day: 31
-        - month: 12
-        - year: 1999
-    """
-    def __new__(cls, toklist=None, name=None, asList=True, modal=True ):
-        if isinstance(toklist, cls):
-            return toklist
-        retobj = object.__new__(cls)
-        retobj.__doinit = True
-        return retobj
-
-    # Performance tuning: we construct a *lot* of these, so keep this
-    # constructor as small and fast as possible
-    def __init__( self, toklist=None, name=None, asList=True, modal=True, isinstance=isinstance ):
-        if self.__doinit:
-            self.__doinit = False
-            self.__name = None
-            self.__parent = None
-            self.__accumNames = {}
-            self.__asList = asList
-            self.__modal = modal
-            if toklist is None:
-                toklist = []
-            if isinstance(toklist, list):
-                self.__toklist = toklist[:]
-            elif isinstance(toklist, _generatorType):
-                self.__toklist = list(toklist)
-            else:
-                self.__toklist = [toklist]
-            self.__tokdict = dict()
-
-        if name is not None and name:
-            if not modal:
-                self.__accumNames[name] = 0
-            if isinstance(name,int):
-                name = _ustr(name) # will always return a str, but use _ustr for consistency
-            self.__name = name
-            if not (isinstance(toklist, (type(None), basestring, list)) and toklist in (None,'',[])):
-                if isinstance(toklist,basestring):
-                    toklist = [ toklist ]
-                if asList:
-                    if isinstance(toklist,ParseResults):
-                        self[name] = _ParseResultsWithOffset(toklist.copy(),0)
-                    else:
-                        self[name] = _ParseResultsWithOffset(ParseResults(toklist[0]),0)
-                    self[name].__name = name
-                else:
-                    try:
-                        self[name] = toklist[0]
-                    except (KeyError,TypeError,IndexError):
-                        self[name] = toklist
-
-    def __getitem__( self, i ):
-        if isinstance( i, (int,slice) ):
-            return self.__toklist[i]
-        else:
-            if i not in self.__accumNames:
-                return self.__tokdict[i][-1][0]
-            else:
-                return ParseResults([ v[0] for v in self.__tokdict[i] ])
-
-    def __setitem__( self, k, v, isinstance=isinstance ):
-        if isinstance(v,_ParseResultsWithOffset):
-            self.__tokdict[k] = self.__tokdict.get(k,list()) + [v]
-            sub = v[0]
-        elif isinstance(k,(int,slice)):
-            self.__toklist[k] = v
-            sub = v
-        else:
-            self.__tokdict[k] = self.__tokdict.get(k,list()) + [_ParseResultsWithOffset(v,0)]
-            sub = v
-        if isinstance(sub,ParseResults):
-            sub.__parent = wkref(self)
-
-    def __delitem__( self, i ):
-        if isinstance(i,(int,slice)):
-            mylen = len( self.__toklist )
-            del self.__toklist[i]
-
-            # convert int to slice
-            if isinstance(i, int):
-                if i < 0:
-                    i += mylen
-                i = slice(i, i+1)
-            # get removed indices
-            removed = list(range(*i.indices(mylen)))
-            removed.reverse()
-            # fixup indices in token dictionary
-            for name,occurrences in self.__tokdict.items():
-                for j in removed:
-                    for k, (value, position) in enumerate(occurrences):
-                        occurrences[k] = _ParseResultsWithOffset(value, position - (position > j))
-        else:
-            del self.__tokdict[i]
-
-    def __contains__( self, k ):
-        return k in self.__tokdict
-
-    def __len__( self ): return len( self.__toklist )
-    def __bool__(self): return ( not not self.__toklist )
-    __nonzero__ = __bool__
-    def __iter__( self ): return iter( self.__toklist )
-    def __reversed__( self ): return iter( self.__toklist[::-1] )
-    def _iterkeys( self ):
-        if hasattr(self.__tokdict, "iterkeys"):
-            return self.__tokdict.iterkeys()
-        else:
-            return iter(self.__tokdict)
-
-    def _itervalues( self ):
-        return (self[k] for k in self._iterkeys())
-            
-    def _iteritems( self ):
-        return ((k, self[k]) for k in self._iterkeys())
-
-    if PY_3:
-        keys = _iterkeys       
-        """Returns an iterator of all named result keys (Python 3.x only)."""
-
-        values = _itervalues
-        """Returns an iterator of all named result values (Python 3.x only)."""
-
-        items = _iteritems
-        """Returns an iterator of all named result key-value tuples (Python 3.x only)."""
-
-    else:
-        iterkeys = _iterkeys
-        """Returns an iterator of all named result keys (Python 2.x only)."""
-
-        itervalues = _itervalues
-        """Returns an iterator of all named result values (Python 2.x only)."""
-
-        iteritems = _iteritems
-        """Returns an iterator of all named result key-value tuples (Python 2.x only)."""
-
-        def keys( self ):
-            """Returns all named result keys (as a list in Python 2.x, as an iterator in Python 3.x)."""
-            return list(self.iterkeys())
-
-        def values( self ):
-            """Returns all named result values (as a list in Python 2.x, as an iterator in Python 3.x)."""
-            return list(self.itervalues())
-                
-        def items( self ):
-            """Returns all named result key-values (as a list of tuples in Python 2.x, as an iterator in Python 3.x)."""
-            return list(self.iteritems())
-
-    def haskeys( self ):
-        """Since keys() returns an iterator, this method is helpful in bypassing
-           code that looks for the existence of any defined results names."""
-        return bool(self.__tokdict)
-        
-    def pop( self, *args, **kwargs):
-        """
-        Removes and returns item at specified index (default=C{last}).
-        Supports both C{list} and C{dict} semantics for C{pop()}. If passed no
-        argument or an integer argument, it will use C{list} semantics
-        and pop tokens from the list of parsed tokens. If passed a 
-        non-integer argument (most likely a string), it will use C{dict}
-        semantics and pop the corresponding value from any defined 
-        results names. A second default return value argument is 
-        supported, just as in C{dict.pop()}.
-
-        Example::
-            def remove_first(tokens):
-                tokens.pop(0)
-            print(OneOrMore(Word(nums)).parseString("0 123 321")) # -> ['0', '123', '321']
-            print(OneOrMore(Word(nums)).addParseAction(remove_first).parseString("0 123 321")) # -> ['123', '321']
-
-            label = Word(alphas)
-            patt = label("LABEL") + OneOrMore(Word(nums))
-            print(patt.parseString("AAB 123 321").dump())
-
-            # Use pop() in a parse action to remove named result (note that corresponding value is not
-            # removed from list form of results)
-            def remove_LABEL(tokens):
-                tokens.pop("LABEL")
-                return tokens
-            patt.addParseAction(remove_LABEL)
-            print(patt.parseString("AAB 123 321").dump())
-        prints::
-            ['AAB', '123', '321']
-            - LABEL: AAB
-
-            ['AAB', '123', '321']
-        """
-        if not args:
-            args = [-1]
-        for k,v in kwargs.items():
-            if k == 'default':
-                args = (args[0], v)
-            else:
-                raise TypeError("pop() got an unexpected keyword argument '%s'" % k)
-        if (isinstance(args[0], int) or 
-                        len(args) == 1 or 
-                        args[0] in self):
-            index = args[0]
-            ret = self[index]
-            del self[index]
-            return ret
-        else:
-            defaultvalue = args[1]
-            return defaultvalue
-
-    def get(self, key, defaultValue=None):
-        """
-        Returns named result matching the given key, or if there is no
-        such name, then returns the given C{defaultValue} or C{None} if no
-        C{defaultValue} is specified.
-
-        Similar to C{dict.get()}.
-        
-        Example::
-            integer = Word(nums)
-            date_str = integer("year") + '/' + integer("month") + '/' + integer("day")           
-
-            result = date_str.parseString("1999/12/31")
-            print(result.get("year")) # -> '1999'
-            print(result.get("hour", "not specified")) # -> 'not specified'
-            print(result.get("hour")) # -> None
-        """
-        if key in self:
-            return self[key]
-        else:
-            return defaultValue
-
-    def insert( self, index, insStr ):
-        """
-        Inserts new element at location index in the list of parsed tokens.
-        
-        Similar to C{list.insert()}.
-
-        Example::
-            print(OneOrMore(Word(nums)).parseString("0 123 321")) # -> ['0', '123', '321']
-
-            # use a parse action to insert the parse location in the front of the parsed results
-            def insert_locn(locn, tokens):
-                tokens.insert(0, locn)
-            print(OneOrMore(Word(nums)).addParseAction(insert_locn).parseString("0 123 321")) # -> [0, '0', '123', '321']
-        """
-        self.__toklist.insert(index, insStr)
-        # fixup indices in token dictionary
-        for name,occurrences in self.__tokdict.items():
-            for k, (value, position) in enumerate(occurrences):
-                occurrences[k] = _ParseResultsWithOffset(value, position + (position > index))
-
-    def append( self, item ):
-        """
-        Add single element to end of ParseResults list of elements.
-
-        Example::
-            print(OneOrMore(Word(nums)).parseString("0 123 321")) # -> ['0', '123', '321']
-            
-            # use a parse action to compute the sum of the parsed integers, and add it to the end
-            def append_sum(tokens):
-                tokens.append(sum(map(int, tokens)))
-            print(OneOrMore(Word(nums)).addParseAction(append_sum).parseString("0 123 321")) # -> ['0', '123', '321', 444]
-        """
-        self.__toklist.append(item)
-
-    def extend( self, itemseq ):
-        """
-        Add sequence of elements to end of ParseResults list of elements.
-
-        Example::
-            patt = OneOrMore(Word(alphas))
-            
-            # use a parse action to append the reverse of the matched strings, to make a palindrome
-            def make_palindrome(tokens):
-                tokens.extend(reversed([t[::-1] for t in tokens]))
-                return ''.join(tokens)
-            print(patt.addParseAction(make_palindrome).parseString("lskdj sdlkjf lksd")) # -> 'lskdjsdlkjflksddsklfjkldsjdksl'
-        """
-        if isinstance(itemseq, ParseResults):
-            self += itemseq
-        else:
-            self.__toklist.extend(itemseq)
-
-    def clear( self ):
-        """
-        Clear all elements and results names.
-        """
-        del self.__toklist[:]
-        self.__tokdict.clear()
-
-    def __getattr__( self, name ):
-        try:
-            return self[name]
-        except KeyError:
-            return ""
-            
-        if name in self.__tokdict:
-            if name not in self.__accumNames:
-                return self.__tokdict[name][-1][0]
-            else:
-                return ParseResults([ v[0] for v in self.__tokdict[name] ])
-        else:
-            return ""
-
-    def __add__( self, other ):
-        ret = self.copy()
-        ret += other
-        return ret
-
-    def __iadd__( self, other ):
-        if other.__tokdict:
-            offset = len(self.__toklist)
-            addoffset = lambda a: offset if a<0 else a+offset
-            otheritems = other.__tokdict.items()
-            otherdictitems = [(k, _ParseResultsWithOffset(v[0],addoffset(v[1])) )
-                                for (k,vlist) in otheritems for v in vlist]
-            for k,v in otherdictitems:
-                self[k] = v
-                if isinstance(v[0],ParseResults):
-                    v[0].__parent = wkref(self)
-            
-        self.__toklist += other.__toklist
-        self.__accumNames.update( other.__accumNames )
-        return self
-
-    def __radd__(self, other):
-        if isinstance(other,int) and other == 0:
-            # useful for merging many ParseResults using sum() builtin
-            return self.copy()
-        else:
-            # this may raise a TypeError - so be it
-            return other + self
-        
-    def __repr__( self ):
-        return "(%s, %s)" % ( repr( self.__toklist ), repr( self.__tokdict ) )
-
-    def __str__( self ):
-        return '[' + ', '.join(_ustr(i) if isinstance(i, ParseResults) else repr(i) for i in self.__toklist) + ']'
-
-    def _asStringList( self, sep='' ):
-        out = []
-        for item in self.__toklist:
-            if out and sep:
-                out.append(sep)
-            if isinstance( item, ParseResults ):
-                out += item._asStringList()
-            else:
-                out.append( _ustr(item) )
-        return out
-
-    def asList( self ):
-        """
-        Returns the parse results as a nested list of matching tokens, all converted to strings.
-
-        Example::
-            patt = OneOrMore(Word(alphas))
-            result = patt.parseString("sldkj lsdkj sldkj")
-            # even though the result prints in string-like form, it is actually a pyparsing ParseResults
-            print(type(result), result) # -> <class 'pyparsing.ParseResults'> ['sldkj', 'lsdkj', 'sldkj']
-            
-            # Use asList() to create an actual list
-            result_list = result.asList()
-            print(type(result_list), result_list) # -> <class 'list'> ['sldkj', 'lsdkj', 'sldkj']
-        """
-        return [res.asList() if isinstance(res,ParseResults) else res for res in self.__toklist]
-
-    def asDict( self ):
-        """
-        Returns the named parse results as a nested dictionary.
-
-        Example::
-            integer = Word(nums)
-            date_str = integer("year") + '/' + integer("month") + '/' + integer("day")
-            
-            result = date_str.parseString('12/31/1999')
-            print(type(result), repr(result)) # -> <class 'pyparsing.ParseResults'> (['12', '/', '31', '/', '1999'], {'day': [('1999', 4)], 'year': [('12', 0)], 'month': [('31', 2)]})
-            
-            result_dict = result.asDict()
-            print(type(result_dict), repr(result_dict)) # -> <class 'dict'> {'day': '1999', 'year': '12', 'month': '31'}
-
-            # even though a ParseResults supports dict-like access, sometime you just need to have a dict
-            import json
-            print(json.dumps(result)) # -> Exception: TypeError: ... is not JSON serializable
-            print(json.dumps(result.asDict())) # -> {"month": "31", "day": "1999", "year": "12"}
-        """
-        if PY_3:
-            item_fn = self.items
-        else:
-            item_fn = self.iteritems
-            
-        def toItem(obj):
-            if isinstance(obj, ParseResults):
-                if obj.haskeys():
-                    return obj.asDict()
-                else:
-                    return [toItem(v) for v in obj]
-            else:
-                return obj
-                
-        return dict((k,toItem(v)) for k,v in item_fn())
-
-    def copy( self ):
-        """
-        Returns a new copy of a C{ParseResults} object.
-        """
-        ret = ParseResults( self.__toklist )
-        ret.__tokdict = self.__tokdict.copy()
-        ret.__parent = self.__parent
-        ret.__accumNames.update( self.__accumNames )
-        ret.__name = self.__name
-        return ret
-
-    def asXML( self, doctag=None, namedItemsOnly=False, indent="", formatted=True ):
-        """
-        (Deprecated) Returns the parse results as XML. Tags are created for tokens and lists that have defined results names.
-        """
-        nl = "\n"
-        out = []
-        namedItems = dict((v[1],k) for (k,vlist) in self.__tokdict.items()
-                                                            for v in vlist)
-        nextLevelIndent = indent + "  "
-
-        # collapse out indents if formatting is not desired
-        if not formatted:
-            indent = ""
-            nextLevelIndent = ""
-            nl = ""
-
-        selfTag = None
-        if doctag is not None:
-            selfTag = doctag
-        else:
-            if self.__name:
-                selfTag = self.__name
-
-        if not selfTag:
-            if namedItemsOnly:
-                return ""
-            else:
-                selfTag = "ITEM"
-
-        out += [ nl, indent, "<", selfTag, ">" ]
-
-        for i,res in enumerate(self.__toklist):
-            if isinstance(res,ParseResults):
-                if i in namedItems:
-                    out += [ res.asXML(namedItems[i],
-                                        namedItemsOnly and doctag is None,
-                                        nextLevelIndent,
-                                        formatted)]
-                else:
-                    out += [ res.asXML(None,
-                                        namedItemsOnly and doctag is None,
-                                        nextLevelIndent,
-                                        formatted)]
-            else:
-                # individual token, see if there is a name for it
-                resTag = None
-                if i in namedItems:
-                    resTag = namedItems[i]
-                if not resTag:
-                    if namedItemsOnly:
-                        continue
-                    else:
-                        resTag = "ITEM"
-                xmlBodyText = _xml_escape(_ustr(res))
-                out += [ nl, nextLevelIndent, "<", resTag, ">",
-                                                xmlBodyText,
-                                                "</", resTag, ">" ]
-
-        out += [ nl, indent, "</", selfTag, ">" ]
-        return "".join(out)
-
-    def __lookup(self,sub):
-        for k,vlist in self.__tokdict.items():
-            for v,loc in vlist:
-                if sub is v:
-                    return k
-        return None
-
-    def getName(self):
-        r"""
-        Returns the results name for this token expression. Useful when several 
-        different expressions might match at a particular location.
-
-        Example::
-            integer = Word(nums)
-            ssn_expr = Regex(r"\d\d\d-\d\d-\d\d\d\d")
-            house_number_expr = Suppress('#') + Word(nums, alphanums)
-            user_data = (Group(house_number_expr)("house_number") 
-                        | Group(ssn_expr)("ssn")
-                        | Group(integer)("age"))
-            user_info = OneOrMore(user_data)
-            
-            result = user_info.parseString("22 111-22-3333 #221B")
-            for item in result:
-                print(item.getName(), ':', item[0])
-        prints::
-            age : 22
-            ssn : 111-22-3333
-            house_number : 221B
-        """
-        if self.__name:
-            return self.__name
-        elif self.__parent:
-            par = self.__parent()
-            if par:
-                return par.__lookup(self)
-            else:
-                return None
-        elif (len(self) == 1 and
-               len(self.__tokdict) == 1 and
-               next(iter(self.__tokdict.values()))[0][1] in (0,-1)):
-            return next(iter(self.__tokdict.keys()))
-        else:
-            return None
-
-    def dump(self, indent='', depth=0, full=True):
-        """
-        Diagnostic method for listing out the contents of a C{ParseResults}.
-        Accepts an optional C{indent} argument so that this string can be embedded
-        in a nested display of other data.
-
-        Example::
-            integer = Word(nums)
-            date_str = integer("year") + '/' + integer("month") + '/' + integer("day")
-            
-            result = date_str.parseString('12/31/1999')
-            print(result.dump())
-        prints::
-            ['12', '/', '31', '/', '1999']
-            - day: 1999
-            - month: 31
-            - year: 12
-        """
-        out = []
-        NL = '\n'
-        out.append( indent+_ustr(self.asList()) )
-        if full:
-            if self.haskeys():
-                items = sorted((str(k), v) for k,v in self.items())
-                for k,v in items:
-                    if out:
-                        out.append(NL)
-                    out.append( "%s%s- %s: " % (indent,('  '*depth), k) )
-                    if isinstance(v,ParseResults):
-                        if v:
-                            out.append( v.dump(indent,depth+1) )
-                        else:
-                            out.append(_ustr(v))
-                    else:
-                        out.append(repr(v))
-            elif any(isinstance(vv,ParseResults) for vv in self):
-                v = self
-                for i,vv in enumerate(v):
-                    if isinstance(vv,ParseResults):
-                        out.append("\n%s%s[%d]:\n%s%s%s" % (indent,('  '*(depth)),i,indent,('  '*(depth+1)),vv.dump(indent,depth+1) ))
-                    else:
-                        out.append("\n%s%s[%d]:\n%s%s%s" % (indent,('  '*(depth)),i,indent,('  '*(depth+1)),_ustr(vv)))
-            
-        return "".join(out)
-
-    def pprint(self, *args, **kwargs):
-        """
-        Pretty-printer for parsed results as a list, using the C{pprint} module.
-        Accepts additional positional or keyword args as defined for the 
-        C{pprint.pprint} method. (U{http://docs.python.org/3/library/pprint.html#pprint.pprint})
-
-        Example::
-            ident = Word(alphas, alphanums)
-            num = Word(nums)
-            func = Forward()
-            term = ident | num | Group('(' + func + ')')
-            func <<= ident + Group(Optional(delimitedList(term)))
-            result = func.parseString("fna a,b,(fnb c,d,200),100")
-            result.pprint(width=40)
-        prints::
-            ['fna',
-             ['a',
-              'b',
-              ['(', 'fnb', ['c', 'd', '200'], ')'],
-              '100']]
-        """
-        pprint.pprint(self.asList(), *args, **kwargs)
-
-    # add support for pickle protocol
-    def __getstate__(self):
-        return ( self.__toklist,
-                 ( self.__tokdict.copy(),
-                   self.__parent is not None and self.__parent() or None,
-                   self.__accumNames,
-                   self.__name ) )
-
-    def __setstate__(self,state):
-        self.__toklist = state[0]
-        (self.__tokdict,
-         par,
-         inAccumNames,
-         self.__name) = state[1]
-        self.__accumNames = {}
-        self.__accumNames.update(inAccumNames)
-        if par is not None:
-            self.__parent = wkref(par)
-        else:
-            self.__parent = None
-
-    def __getnewargs__(self):
-        return self.__toklist, self.__name, self.__asList, self.__modal
-
-    def __dir__(self):
-        return (dir(type(self)) + list(self.keys()))
-
-MutableMapping.register(ParseResults)
-
-def col (loc,strg):
-    """Returns current column within a string, counting newlines as line separators.
-   The first column is number 1.
-
-   Note: the default parsing behavior is to expand tabs in the input string
-   before starting the parsing process.  See L{I{ParserElement.parseString}<ParserElement.parseString>} for more information
-   on parsing strings containing C{<TAB>}s, and suggested methods to maintain a
-   consistent view of the parsed string, the parse location, and line and column
-   positions within the parsed string.
-   """
-    s = strg
-    return 1 if 0<loc<len(s) and s[loc-1] == '\n' else loc - s.rfind("\n", 0, loc)
-
-def lineno(loc,strg):
-    """Returns current line number within a string, counting newlines as line separators.
-   The first line is number 1.
-
-   Note: the default parsing behavior is to expand tabs in the input string
-   before starting the parsing process.  See L{I{ParserElement.parseString}<ParserElement.parseString>} for more information
-   on parsing strings containing C{<TAB>}s, and suggested methods to maintain a
-   consistent view of the parsed string, the parse location, and line and column
-   positions within the parsed string.
-   """
-    return strg.count("\n",0,loc) + 1
-
-def line( loc, strg ):
-    """Returns the line of text containing loc within a string, counting newlines as line separators.
-       """
-    lastCR = strg.rfind("\n", 0, loc)
-    nextCR = strg.find("\n", loc)
-    if nextCR >= 0:
-        return strg[lastCR+1:nextCR]
-    else:
-        return strg[lastCR+1:]
-
-def _defaultStartDebugAction( instring, loc, expr ):
-    print (("Match " + _ustr(expr) + " at loc " + _ustr(loc) + "(%d,%d)" % ( lineno(loc,instring), col(loc,instring) )))
-
-def _defaultSuccessDebugAction( instring, startloc, endloc, expr, toks ):
-    print ("Matched " + _ustr(expr) + " -> " + str(toks.asList()))
-
-def _defaultExceptionDebugAction( instring, loc, expr, exc ):
-    print ("Exception raised:" + _ustr(exc))
-
-def nullDebugAction(*args):
-    """'Do-nothing' debug action, to suppress debugging output during parsing."""
-    pass
-
-# Only works on Python 3.x - nonlocal is toxic to Python 2 installs
-#~ 'decorator to trim function calls to match the arity of the target'
-#~ def _trim_arity(func, maxargs=3):
-    #~ if func in singleArgBuiltins:
-        #~ return lambda s,l,t: func(t)
-    #~ limit = 0
-    #~ foundArity = False
-    #~ def wrapper(*args):
-        #~ nonlocal limit,foundArity
-        #~ while 1:
-            #~ try:
-                #~ ret = func(*args[limit:])
-                #~ foundArity = True
-                #~ return ret
-            #~ except TypeError:
-                #~ if limit == maxargs or foundArity:
-                    #~ raise
-                #~ limit += 1
-                #~ continue
-    #~ return wrapper
-
-# this version is Python 2.x-3.x cross-compatible
-'decorator to trim function calls to match the arity of the target'
-def _trim_arity(func, maxargs=2):
-    if func in singleArgBuiltins:
-        return lambda s,l,t: func(t)
-    limit = [0]
-    foundArity = [False]
-    
-    # traceback return data structure changed in Py3.5 - normalize back to plain tuples
-    if system_version[:2] >= (3,5):
-        def extract_stack(limit=0):
-            # special handling for Python 3.5.0 - extra deep call stack by 1
-            offset = -3 if system_version == (3,5,0) else -2
-            frame_summary = traceback.extract_stack(limit=-offset+limit-1)[offset]
-            return [frame_summary[:2]]
-        def extract_tb(tb, limit=0):
-            frames = traceback.extract_tb(tb, limit=limit)
-            frame_summary = frames[-1]
-            return [frame_summary[:2]]
-    else:
-        extract_stack = traceback.extract_stack
-        extract_tb = traceback.extract_tb
-    
-    # synthesize what would be returned by traceback.extract_stack at the call to 
-    # user's parse action 'func', so that we don't incur call penalty at parse time
-    
-    LINE_DIFF = 6
-    # IF ANY CODE CHANGES, EVEN JUST COMMENTS OR BLANK LINES, BETWEEN THE NEXT LINE AND 
-    # THE CALL TO FUNC INSIDE WRAPPER, LINE_DIFF MUST BE MODIFIED!!!!
-    this_line = extract_stack(limit=2)[-1]
-    pa_call_line_synth = (this_line[0], this_line[1]+LINE_DIFF)
-
-    def wrapper(*args):
-        while 1:
-            try:
-                ret = func(*args[limit[0]:])
-                foundArity[0] = True
-                return ret
-            except TypeError:
-                # re-raise TypeErrors if they did not come from our arity testing
-                if foundArity[0]:
-                    raise
-                else:
-                    try:
-                        tb = sys.exc_info()[-1]
-                        if not extract_tb(tb, limit=2)[-1][:2] == pa_call_line_synth:
-                            raise
-                    finally:
-                        del tb
-
-                if limit[0] <= maxargs:
-                    limit[0] += 1
-                    continue
-                raise
-
-    # copy func name to wrapper for sensible debug output
-    func_name = "<parse action>"
-    try:
-        func_name = getattr(func, '__name__', 
-                            getattr(func, '__class__').__name__)
-    except Exception:
-        func_name = str(func)
-    wrapper.__name__ = func_name
-
-    return wrapper
-
-class ParserElement(object):
-    """Abstract base level parser element class."""
-    DEFAULT_WHITE_CHARS = " \n\t\r"
-    verbose_stacktrace = False
-
-    @staticmethod
-    def setDefaultWhitespaceChars( chars ):
-        r"""
-        Overrides the default whitespace chars
-
-        Example::
-            # default whitespace chars are space, <TAB> and newline
-            OneOrMore(Word(alphas)).parseString("abc def\nghi jkl")  # -> ['abc', 'def', 'ghi', 'jkl']
-            
-            # change to just treat newline as significant
-            ParserElement.setDefaultWhitespaceChars(" \t")
-            OneOrMore(Word(alphas)).parseString("abc def\nghi jkl")  # -> ['abc', 'def']
-        """
-        ParserElement.DEFAULT_WHITE_CHARS = chars
-
-    @staticmethod
-    def inlineLiteralsUsing(cls):
-        """
-        Set class to be used for inclusion of string literals into a parser.
-        
-        Example::
-            # default literal class used is Literal
-            integer = Word(nums)
-            date_str = integer("year") + '/' + integer("month") + '/' + integer("day")           
-
-            date_str.parseString("1999/12/31")  # -> ['1999', '/', '12', '/', '31']
-
-
-            # change to Suppress
-            ParserElement.inlineLiteralsUsing(Suppress)
-            date_str = integer("year") + '/' + integer("month") + '/' + integer("day")           
-
-            date_str.parseString("1999/12/31")  # -> ['1999', '12', '31']
-        """
-        ParserElement._literalStringClass = cls
-
-    def __init__( self, savelist=False ):
-        self.parseAction = list()
-        self.failAction = None
-        #~ self.name = "<unknown>"  # don't define self.name, let subclasses try/except upcall
-        self.strRepr = None
-        self.resultsName = None
-        self.saveAsList = savelist
-        self.skipWhitespace = True
-        self.whiteChars = ParserElement.DEFAULT_WHITE_CHARS
-        self.copyDefaultWhiteChars = True
-        self.mayReturnEmpty = False # used when checking for left-recursion
-        self.keepTabs = False
-        self.ignoreExprs = list()
-        self.debug = False
-        self.streamlined = False
-        self.mayIndexError = True # used to optimize exception handling for subclasses that don't advance parse index
-        self.errmsg = ""
-        self.modalResults = True # used to mark results names as modal (report only last) or cumulative (list all)
-        self.debugActions = ( None, None, None ) #custom debug actions
-        self.re = None
-        self.callPreparse = True # used to avoid redundant calls to preParse
-        self.callDuringTry = False
-
-    def copy( self ):
-        """
-        Make a copy of this C{ParserElement}.  Useful for defining different parse actions
-        for the same parsing pattern, using copies of the original parse element.
-        
-        Example::
-            integer = Word(nums).setParseAction(lambda toks: int(toks[0]))
-            integerK = integer.copy().addParseAction(lambda toks: toks[0]*1024) + Suppress("K")
-            integerM = integer.copy().addParseAction(lambda toks: toks[0]*1024*1024) + Suppress("M")
-            
-            print(OneOrMore(integerK | integerM | integer).parseString("5K 100 640K 256M"))
-        prints::
-            [5120, 100, 655360, 268435456]
-        Equivalent form of C{expr.copy()} is just C{expr()}::
-            integerM = integer().addParseAction(lambda toks: toks[0]*1024*1024) + Suppress("M")
-        """
-        cpy = copy.copy( self )
-        cpy.parseAction = self.parseAction[:]
-        cpy.ignoreExprs = self.ignoreExprs[:]
-        if self.copyDefaultWhiteChars:
-            cpy.whiteChars = ParserElement.DEFAULT_WHITE_CHARS
-        return cpy
-
-    def setName( self, name ):
-        """
-        Define name for this expression, makes debugging and exception messages clearer.
-        
-        Example::
-            Word(nums).parseString("ABC")  # -> Exception: Expected W:(0123...) (at char 0), (line:1, col:1)
-            Word(nums).setName("integer").parseString("ABC")  # -> Exception: Expected integer (at char 0), (line:1, col:1)
-        """
-        self.name = name
-        self.errmsg = "Expected " + self.name
-        if hasattr(self,"exception"):
-            self.exception.msg = self.errmsg
-        return self
-
-    def setResultsName( self, name, listAllMatches=False ):
-        """
-        Define name for referencing matching tokens as a nested attribute
-        of the returned parse results.
-        NOTE: this returns a *copy* of the original C{ParserElement} object;
-        this is so that the client can define a basic element, such as an
-        integer, and reference it in multiple places with different names.
-
-        You can also set results names using the abbreviated syntax,
-        C{expr("name")} in place of C{expr.setResultsName("name")} - 
-        see L{I{__call__}<__call__>}.
-
-        Example::
-            date_str = (integer.setResultsName("year") + '/' 
-                        + integer.setResultsName("month") + '/' 
-                        + integer.setResultsName("day"))
-
-            # equivalent form:
-            date_str = integer("year") + '/' + integer("month") + '/' + integer("day")
-        """
-        newself = self.copy()
-        if name.endswith("*"):
-            name = name[:-1]
-            listAllMatches=True
-        newself.resultsName = name
-        newself.modalResults = not listAllMatches
-        return newself
-
-    def setBreak(self,breakFlag = True):
-        """Method to invoke the Python pdb debugger when this element is
-           about to be parsed. Set C{breakFlag} to True to enable, False to
-           disable.
-        """
-        if breakFlag:
-            _parseMethod = self._parse
-            def breaker(instring, loc, doActions=True, callPreParse=True):
-                import pdb
-                pdb.set_trace()
-                return _parseMethod( instring, loc, doActions, callPreParse )
-            breaker._originalParseMethod = _parseMethod
-            self._parse = breaker
-        else:
-            if hasattr(self._parse,"_originalParseMethod"):
-                self._parse = self._parse._originalParseMethod
-        return self
-
-    def setParseAction( self, *fns, **kwargs ):
-        """
-        Define one or more actions to perform when successfully matching parse element definition.
-        Parse action fn is a callable method with 0-3 arguments, called as C{fn(s,loc,toks)},
-        C{fn(loc,toks)}, C{fn(toks)}, or just C{fn()}, where:
-         - s   = the original string being parsed (see note below)
-         - loc = the location of the matching substring
-         - toks = a list of the matched tokens, packaged as a C{L{ParseResults}} object
-        If the functions in fns modify the tokens, they can return them as the return
-        value from fn, and the modified list of tokens will replace the original.
-        Otherwise, fn does not need to return any value.
-
-        Optional keyword arguments:
-         - callDuringTry = (default=C{False}) indicate if parse action should be run during lookaheads and alternate testing
-
-        Note: the default parsing behavior is to expand tabs in the input string
-        before starting the parsing process.  See L{I{parseString}<parseString>} for more information
-        on parsing strings containing C{<TAB>}s, and suggested methods to maintain a
-        consistent view of the parsed string, the parse location, and line and column
-        positions within the parsed string.
-        
-        Example::
-            integer = Word(nums)
-            date_str = integer + '/' + integer + '/' + integer
-
-            date_str.parseString("1999/12/31")  # -> ['1999', '/', '12', '/', '31']
-
-            # use parse action to convert to ints at parse time
-            integer = Word(nums).setParseAction(lambda toks: int(toks[0]))
-            date_str = integer + '/' + integer + '/' + integer
-
-            # note that integer fields are now ints, not strings
-            date_str.parseString("1999/12/31")  # -> [1999, '/', 12, '/', 31]
-        """
-        self.parseAction = list(map(_trim_arity, list(fns)))
-        self.callDuringTry = kwargs.get("callDuringTry", False)
-        return self
-
-    def addParseAction( self, *fns, **kwargs ):
-        """
-        Add one or more parse actions to expression's list of parse actions. See L{I{setParseAction}<setParseAction>}.
-        
-        See examples in L{I{copy}<copy>}.
-        """
-        self.parseAction += list(map(_trim_arity, list(fns)))
-        self.callDuringTry = self.callDuringTry or kwargs.get("callDuringTry", False)
-        return self
-
-    def addCondition(self, *fns, **kwargs):
-        """Add a boolean predicate function to expression's list of parse actions. See 
-        L{I{setParseAction}<setParseAction>} for function call signatures. Unlike C{setParseAction}, 
-        functions passed to C{addCondition} need to return boolean success/fail of the condition.
-
-        Optional keyword arguments:
-         - message = define a custom message to be used in the raised exception
-         - fatal   = if True, will raise ParseFatalException to stop parsing immediately; otherwise will raise ParseException
-         
-        Example::
-            integer = Word(nums).setParseAction(lambda toks: int(toks[0]))
-            year_int = integer.copy()
-            year_int.addCondition(lambda toks: toks[0] >= 2000, message="Only support years 2000 and later")
-            date_str = year_int + '/' + integer + '/' + integer
-
-            result = date_str.parseString("1999/12/31")  # -> Exception: Only support years 2000 and later (at char 0), (line:1, col:1)
-        """
-        msg = kwargs.get("message", "failed user-defined condition")
-        exc_type = ParseFatalException if kwargs.get("fatal", False) else ParseException
-        for fn in fns:
-            def pa(s,l,t):
-                if not bool(_trim_arity(fn)(s,l,t)):
-                    raise exc_type(s,l,msg)
-            self.parseAction.append(pa)
-        self.callDuringTry = self.callDuringTry or kwargs.get("callDuringTry", False)
-        return self
-
-    def setFailAction( self, fn ):
-        """Define action to perform if parsing fails at this expression.
-           Fail acton fn is a callable function that takes the arguments
-           C{fn(s,loc,expr,err)} where:
-            - s = string being parsed
-            - loc = location where expression match was attempted and failed
-            - expr = the parse expression that failed
-            - err = the exception thrown
-           The function returns no value.  It may throw C{L{ParseFatalException}}
-           if it is desired to stop parsing immediately."""
-        self.failAction = fn
-        return self
-
-    def _skipIgnorables( self, instring, loc ):
-        exprsFound = True
-        while exprsFound:
-            exprsFound = False
-            for e in self.ignoreExprs:
-                try:
-                    while 1:
-                        loc,dummy = e._parse( instring, loc )
-                        exprsFound = True
-                except ParseException:
-                    pass
-        return loc
-
-    def preParse( self, instring, loc ):
-        if self.ignoreExprs:
-            loc = self._skipIgnorables( instring, loc )
-
-        if self.skipWhitespace:
-            wt = self.whiteChars
-            instrlen = len(instring)
-            while loc < instrlen and instring[loc] in wt:
-                loc += 1
-
-        return loc
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        return loc, []
-
-    def postParse( self, instring, loc, tokenlist ):
-        return tokenlist
-
-    #~ @profile
-    def _parseNoCache( self, instring, loc, doActions=True, callPreParse=True ):
-        debugging = ( self.debug ) #and doActions )
-
-        if debugging or self.failAction:
-            #~ print ("Match",self,"at loc",loc,"(%d,%d)" % ( lineno(loc,instring), col(loc,instring) ))
-            if (self.debugActions[0] ):
-                self.debugActions[0]( instring, loc, self )
-            if callPreParse and self.callPreparse:
-                preloc = self.preParse( instring, loc )
-            else:
-                preloc = loc
-            tokensStart = preloc
-            try:
-                try:
-                    loc,tokens = self.parseImpl( instring, preloc, doActions )
-                except IndexError:
-                    raise ParseException( instring, len(instring), self.errmsg, self )
-            except ParseBaseException as err:
-                #~ print ("Exception raised:", err)
-                if self.debugActions[2]:
-                    self.debugActions[2]( instring, tokensStart, self, err )
-                if self.failAction:
-                    self.failAction( instring, tokensStart, self, err )
-                raise
-        else:
-            if callPreParse and self.callPreparse:
-                preloc = self.preParse( instring, loc )
-            else:
-                preloc = loc
-            tokensStart = preloc
-            if self.mayIndexError or preloc >= len(instring):
-                try:
-                    loc,tokens = self.parseImpl( instring, preloc, doActions )
-                except IndexError:
-                    raise ParseException( instring, len(instring), self.errmsg, self )
-            else:
-                loc,tokens = self.parseImpl( instring, preloc, doActions )
-
-        tokens = self.postParse( instring, loc, tokens )
-
-        retTokens = ParseResults( tokens, self.resultsName, asList=self.saveAsList, modal=self.modalResults )
-        if self.parseAction and (doActions or self.callDuringTry):
-            if debugging:
-                try:
-                    for fn in self.parseAction:
-                        tokens = fn( instring, tokensStart, retTokens )
-                        if tokens is not None:
-                            retTokens = ParseResults( tokens,
-                                                      self.resultsName,
-                                                      asList=self.saveAsList and isinstance(tokens,(ParseResults,list)),
-                                                      modal=self.modalResults )
-                except ParseBaseException as err:
-                    #~ print "Exception raised in user parse action:", err
-                    if (self.debugActions[2] ):
-                        self.debugActions[2]( instring, tokensStart, self, err )
-                    raise
-            else:
-                for fn in self.parseAction:
-                    tokens = fn( instring, tokensStart, retTokens )
-                    if tokens is not None:
-                        retTokens = ParseResults( tokens,
-                                                  self.resultsName,
-                                                  asList=self.saveAsList and isinstance(tokens,(ParseResults,list)),
-                                                  modal=self.modalResults )
-        if debugging:
-            #~ print ("Matched",self,"->",retTokens.asList())
-            if (self.debugActions[1] ):
-                self.debugActions[1]( instring, tokensStart, loc, self, retTokens )
-
-        return loc, retTokens
-
-    def tryParse( self, instring, loc ):
-        try:
-            return self._parse( instring, loc, doActions=False )[0]
-        except ParseFatalException:
-            raise ParseException( instring, loc, self.errmsg, self)
-    
-    def canParseNext(self, instring, loc):
-        try:
-            self.tryParse(instring, loc)
-        except (ParseException, IndexError):
-            return False
-        else:
-            return True
-
-    class _UnboundedCache(object):
-        def __init__(self):
-            cache = {}
-            self.not_in_cache = not_in_cache = object()
-
-            def get(self, key):
-                return cache.get(key, not_in_cache)
-
-            def set(self, key, value):
-                cache[key] = value
-
-            def clear(self):
-                cache.clear()
-                
-            def cache_len(self):
-                return len(cache)
-
-            self.get = types.MethodType(get, self)
-            self.set = types.MethodType(set, self)
-            self.clear = types.MethodType(clear, self)
-            self.__len__ = types.MethodType(cache_len, self)
-
-    if _OrderedDict is not None:
-        class _FifoCache(object):
-            def __init__(self, size):
-                self.not_in_cache = not_in_cache = object()
-
-                cache = _OrderedDict()
-
-                def get(self, key):
-                    return cache.get(key, not_in_cache)
-
-                def set(self, key, value):
-                    cache[key] = value
-                    while len(cache) > size:
-                        try:
-                            cache.popitem(False)
-                        except KeyError:
-                            pass
-
-                def clear(self):
-                    cache.clear()
-
-                def cache_len(self):
-                    return len(cache)
-
-                self.get = types.MethodType(get, self)
-                self.set = types.MethodType(set, self)
-                self.clear = types.MethodType(clear, self)
-                self.__len__ = types.MethodType(cache_len, self)
-
-    else:
-        class _FifoCache(object):
-            def __init__(self, size):
-                self.not_in_cache = not_in_cache = object()
-
-                cache = {}
-                key_fifo = collections.deque([], size)
-
-                def get(self, key):
-                    return cache.get(key, not_in_cache)
-
-                def set(self, key, value):
-                    cache[key] = value
-                    while len(key_fifo) > size:
-                        cache.pop(key_fifo.popleft(), None)
-                    key_fifo.append(key)
-
-                def clear(self):
-                    cache.clear()
-                    key_fifo.clear()
-
-                def cache_len(self):
-                    return len(cache)
-
-                self.get = types.MethodType(get, self)
-                self.set = types.MethodType(set, self)
-                self.clear = types.MethodType(clear, self)
-                self.__len__ = types.MethodType(cache_len, self)
-
-    # argument cache for optimizing repeated calls when backtracking through recursive expressions
-    packrat_cache = {} # this is set later by enabledPackrat(); this is here so that resetCache() doesn't fail
-    packrat_cache_lock = RLock()
-    packrat_cache_stats = [0, 0]
-
-    # this method gets repeatedly called during backtracking with the same arguments -
-    # we can cache these arguments and save ourselves the trouble of re-parsing the contained expression
-    def _parseCache( self, instring, loc, doActions=True, callPreParse=True ):
-        HIT, MISS = 0, 1
-        lookup = (self, instring, loc, callPreParse, doActions)
-        with ParserElement.packrat_cache_lock:
-            cache = ParserElement.packrat_cache
-            value = cache.get(lookup)
-            if value is cache.not_in_cache:
-                ParserElement.packrat_cache_stats[MISS] += 1
-                try:
-                    value = self._parseNoCache(instring, loc, doActions, callPreParse)
-                except ParseBaseException as pe:
-                    # cache a copy of the exception, without the traceback
-                    cache.set(lookup, pe.__class__(*pe.args))
-                    raise
-                else:
-                    cache.set(lookup, (value[0], value[1].copy()))
-                    return value
-            else:
-                ParserElement.packrat_cache_stats[HIT] += 1
-                if isinstance(value, Exception):
-                    raise value
-                return (value[0], value[1].copy())
-
-    _parse = _parseNoCache
-
-    @staticmethod
-    def resetCache():
-        ParserElement.packrat_cache.clear()
-        ParserElement.packrat_cache_stats[:] = [0] * len(ParserElement.packrat_cache_stats)
-
-    _packratEnabled = False
-    @staticmethod
-    def enablePackrat(cache_size_limit=128):
-        """Enables "packrat" parsing, which adds memoizing to the parsing logic.
-           Repeated parse attempts at the same string location (which happens
-           often in many complex grammars) can immediately return a cached value,
-           instead of re-executing parsing/validating code.  Memoizing is done of
-           both valid results and parsing exceptions.
-           
-           Parameters:
-            - cache_size_limit - (default=C{128}) - if an integer value is provided
-              will limit the size of the packrat cache; if None is passed, then
-              the cache size will be unbounded; if 0 is passed, the cache will
-              be effectively disabled.
-            
-           This speedup may break existing programs that use parse actions that
-           have side-effects.  For this reason, packrat parsing is disabled when
-           you first import pyparsing.  To activate the packrat feature, your
-           program must call the class method C{ParserElement.enablePackrat()}.  If
-           your program uses C{psyco} to "compile as you go", you must call
-           C{enablePackrat} before calling C{psyco.full()}.  If you do not do this,
-           Python will crash.  For best results, call C{enablePackrat()} immediately
-           after importing pyparsing.
-           
-           Example::
-               import pyparsing
-               pyparsing.ParserElement.enablePackrat()
-        """
-        if not ParserElement._packratEnabled:
-            ParserElement._packratEnabled = True
-            if cache_size_limit is None:
-                ParserElement.packrat_cache = ParserElement._UnboundedCache()
-            else:
-                ParserElement.packrat_cache = ParserElement._FifoCache(cache_size_limit)
-            ParserElement._parse = ParserElement._parseCache
-
-    def parseString( self, instring, parseAll=False ):
-        """
-        Execute the parse expression with the given string.
-        This is the main interface to the client code, once the complete
-        expression has been built.
-
-        If you want the grammar to require that the entire input string be
-        successfully parsed, then set C{parseAll} to True (equivalent to ending
-        the grammar with C{L{StringEnd()}}).
-
-        Note: C{parseString} implicitly calls C{expandtabs()} on the input string,
-        in order to report proper column numbers in parse actions.
-        If the input string contains tabs and
-        the grammar uses parse actions that use the C{loc} argument to index into the
-        string being parsed, you can ensure you have a consistent view of the input
-        string by:
-         - calling C{parseWithTabs} on your grammar before calling C{parseString}
-           (see L{I{parseWithTabs}<parseWithTabs>})
-         - define your parse action using the full C{(s,loc,toks)} signature, and
-           reference the input string using the parse action's C{s} argument
-         - explictly expand the tabs in your input string before calling
-           C{parseString}
-        
-        Example::
-            Word('a').parseString('aaaaabaaa')  # -> ['aaaaa']
-            Word('a').parseString('aaaaabaaa', parseAll=True)  # -> Exception: Expected end of text
-        """
-        ParserElement.resetCache()
-        if not self.streamlined:
-            self.streamline()
-            #~ self.saveAsList = True
-        for e in self.ignoreExprs:
-            e.streamline()
-        if not self.keepTabs:
-            instring = instring.expandtabs()
-        try:
-            loc, tokens = self._parse( instring, 0 )
-            if parseAll:
-                loc = self.preParse( instring, loc )
-                se = Empty() + StringEnd()
-                se._parse( instring, loc )
-        except ParseBaseException as exc:
-            if ParserElement.verbose_stacktrace:
-                raise
-            else:
-                # catch and re-raise exception from here, clears out pyparsing internal stack trace
-                raise exc
-        else:
-            return tokens
-
-    def scanString( self, instring, maxMatches=_MAX_INT, overlap=False ):
-        """
-        Scan the input string for expression matches.  Each match will return the
-        matching tokens, start location, and end location.  May be called with optional
-        C{maxMatches} argument, to clip scanning after 'n' matches are found.  If
-        C{overlap} is specified, then overlapping matches will be reported.
-
-        Note that the start and end locations are reported relative to the string
-        being parsed.  See L{I{parseString}<parseString>} for more information on parsing
-        strings with embedded tabs.
-
-        Example::
-            source = "sldjf123lsdjjkf345sldkjf879lkjsfd987"
-            print(source)
-            for tokens,start,end in Word(alphas).scanString(source):
-                print(' '*start + '^'*(end-start))
-                print(' '*start + tokens[0])
-        
-        prints::
-        
-            sldjf123lsdjjkf345sldkjf879lkjsfd987
-            ^^^^^
-            sldjf
-                    ^^^^^^^
-                    lsdjjkf
-                              ^^^^^^
-                              sldkjf
-                                       ^^^^^^
-                                       lkjsfd
-        """
-        if not self.streamlined:
-            self.streamline()
-        for e in self.ignoreExprs:
-            e.streamline()
-
-        if not self.keepTabs:
-            instring = _ustr(instring).expandtabs()
-        instrlen = len(instring)
-        loc = 0
-        preparseFn = self.preParse
-        parseFn = self._parse
-        ParserElement.resetCache()
-        matches = 0
-        try:
-            while loc <= instrlen and matches < maxMatches:
-                try:
-                    preloc = preparseFn( instring, loc )
-                    nextLoc,tokens = parseFn( instring, preloc, callPreParse=False )
-                except ParseException:
-                    loc = preloc+1
-                else:
-                    if nextLoc > loc:
-                        matches += 1
-                        yield tokens, preloc, nextLoc
-                        if overlap:
-                            nextloc = preparseFn( instring, loc )
-                            if nextloc > loc:
-                                loc = nextLoc
-                            else:
-                                loc += 1
-                        else:
-                            loc = nextLoc
-                    else:
-                        loc = preloc+1
-        except ParseBaseException as exc:
-            if ParserElement.verbose_stacktrace:
-                raise
-            else:
-                # catch and re-raise exception from here, clears out pyparsing internal stack trace
-                raise exc
-
-    def transformString( self, instring ):
-        """
-        Extension to C{L{scanString}}, to modify matching text with modified tokens that may
-        be returned from a parse action.  To use C{transformString}, define a grammar and
-        attach a parse action to it that modifies the returned token list.
-        Invoking C{transformString()} on a target string will then scan for matches,
-        and replace the matched text patterns according to the logic in the parse
-        action.  C{transformString()} returns the resulting transformed string.
-        
-        Example::
-            wd = Word(alphas)
-            wd.setParseAction(lambda toks: toks[0].title())
-            
-            print(wd.transformString("now is the winter of our discontent made glorious summer by this sun of york."))
-        Prints::
-            Now Is The Winter Of Our Discontent Made Glorious Summer By This Sun Of York.
-        """
-        out = []
-        lastE = 0
-        # force preservation of <TAB>s, to minimize unwanted transformation of string, and to
-        # keep string locs straight between transformString and scanString
-        self.keepTabs = True
-        try:
-            for t,s,e in self.scanString( instring ):
-                out.append( instring[lastE:s] )
-                if t:
-                    if isinstance(t,ParseResults):
-                        out += t.asList()
-                    elif isinstance(t,list):
-                        out += t
-                    else:
-                        out.append(t)
-                lastE = e
-            out.append(instring[lastE:])
-            out = [o for o in out if o]
-            return "".join(map(_ustr,_flatten(out)))
-        except ParseBaseException as exc:
-            if ParserElement.verbose_stacktrace:
-                raise
-            else:
-                # catch and re-raise exception from here, clears out pyparsing internal stack trace
-                raise exc
-
-    def searchString( self, instring, maxMatches=_MAX_INT ):
-        """
-        Another extension to C{L{scanString}}, simplifying the access to the tokens found
-        to match the given parse expression.  May be called with optional
-        C{maxMatches} argument, to clip searching after 'n' matches are found.
-        
-        Example::
-            # a capitalized word starts with an uppercase letter, followed by zero or more lowercase letters
-            cap_word = Word(alphas.upper(), alphas.lower())
-            
-            print(cap_word.searchString("More than Iron, more than Lead, more than Gold I need Electricity"))
-
-            # the sum() builtin can be used to merge results into a single ParseResults object
-            print(sum(cap_word.searchString("More than Iron, more than Lead, more than Gold I need Electricity")))
-        prints::
-            [['More'], ['Iron'], ['Lead'], ['Gold'], ['I'], ['Electricity']]
-            ['More', 'Iron', 'Lead', 'Gold', 'I', 'Electricity']
-        """
-        try:
-            return ParseResults([ t for t,s,e in self.scanString( instring, maxMatches ) ])
-        except ParseBaseException as exc:
-            if ParserElement.verbose_stacktrace:
-                raise
-            else:
-                # catch and re-raise exception from here, clears out pyparsing internal stack trace
-                raise exc
-
-    def split(self, instring, maxsplit=_MAX_INT, includeSeparators=False):
-        """
-        Generator method to split a string using the given expression as a separator.
-        May be called with optional C{maxsplit} argument, to limit the number of splits;
-        and the optional C{includeSeparators} argument (default=C{False}), if the separating
-        matching text should be included in the split results.
-        
-        Example::        
-            punc = oneOf(list(".,;:/-!?"))
-            print(list(punc.split("This, this?, this sentence, is badly punctuated!")))
-        prints::
-            ['This', ' this', '', ' this sentence', ' is badly punctuated', '']
-        """
-        splits = 0
-        last = 0
-        for t,s,e in self.scanString(instring, maxMatches=maxsplit):
-            yield instring[last:s]
-            if includeSeparators:
-                yield t[0]
-            last = e
-        yield instring[last:]
-
-    def __add__(self, other ):
-        """
-        Implementation of + operator - returns C{L{And}}. Adding strings to a ParserElement
-        converts them to L{Literal}s by default.
-        
-        Example::
-            greet = Word(alphas) + "," + Word(alphas) + "!"
-            hello = "Hello, World!"
-            print (hello, "->", greet.parseString(hello))
-        Prints::
-            Hello, World! -> ['Hello', ',', 'World', '!']
-        """
-        if isinstance( other, basestring ):
-            other = ParserElement._literalStringClass( other )
-        if not isinstance( other, ParserElement ):
-            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
-                    SyntaxWarning, stacklevel=2)
-            return None
-        return And( [ self, other ] )
-
-    def __radd__(self, other ):
-        """
-        Implementation of + operator when left operand is not a C{L{ParserElement}}
-        """
-        if isinstance( other, basestring ):
-            other = ParserElement._literalStringClass( other )
-        if not isinstance( other, ParserElement ):
-            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
-                    SyntaxWarning, stacklevel=2)
-            return None
-        return other + self
-
-    def __sub__(self, other):
-        """
-        Implementation of - operator, returns C{L{And}} with error stop
-        """
-        if isinstance( other, basestring ):
-            other = ParserElement._literalStringClass( other )
-        if not isinstance( other, ParserElement ):
-            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
-                    SyntaxWarning, stacklevel=2)
-            return None
-        return self + And._ErrorStop() + other
-
-    def __rsub__(self, other ):
-        """
-        Implementation of - operator when left operand is not a C{L{ParserElement}}
-        """
-        if isinstance( other, basestring ):
-            other = ParserElement._literalStringClass( other )
-        if not isinstance( other, ParserElement ):
-            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
-                    SyntaxWarning, stacklevel=2)
-            return None
-        return other - self
-
-    def __mul__(self,other):
-        """
-        Implementation of * operator, allows use of C{expr * 3} in place of
-        C{expr + expr + expr}.  Expressions may also me multiplied by a 2-integer
-        tuple, similar to C{{min,max}} multipliers in regular expressions.  Tuples
-        may also include C{None} as in:
-         - C{expr*(n,None)} or C{expr*(n,)} is equivalent
-              to C{expr*n + L{ZeroOrMore}(expr)}
-              (read as "at least n instances of C{expr}")
-         - C{expr*(None,n)} is equivalent to C{expr*(0,n)}
-              (read as "0 to n instances of C{expr}")
-         - C{expr*(None,None)} is equivalent to C{L{ZeroOrMore}(expr)}
-         - C{expr*(1,None)} is equivalent to C{L{OneOrMore}(expr)}
-
-        Note that C{expr*(None,n)} does not raise an exception if
-        more than n exprs exist in the input stream; that is,
-        C{expr*(None,n)} does not enforce a maximum number of expr
-        occurrences.  If this behavior is desired, then write
-        C{expr*(None,n) + ~expr}
-        """
-        if isinstance(other,int):
-            minElements, optElements = other,0
-        elif isinstance(other,tuple):
-            other = (other + (None, None))[:2]
-            if other[0] is None:
-                other = (0, other[1])
-            if isinstance(other[0],int) and other[1] is None:
-                if other[0] == 0:
-                    return ZeroOrMore(self)
-                if other[0] == 1:
-                    return OneOrMore(self)
-                else:
-                    return self*other[0] + ZeroOrMore(self)
-            elif isinstance(other[0],int) and isinstance(other[1],int):
-                minElements, optElements = other
-                optElements -= minElements
-            else:
-                raise TypeError("cannot multiply 'ParserElement' and ('%s','%s') objects", type(other[0]),type(other[1]))
-        else:
-            raise TypeError("cannot multiply 'ParserElement' and '%s' objects", type(other))
-
-        if minElements < 0:
-            raise ValueError("cannot multiply ParserElement by negative value")
-        if optElements < 0:
-            raise ValueError("second tuple value must be greater or equal to first tuple value")
-        if minElements == optElements == 0:
-            raise ValueError("cannot multiply ParserElement by 0 or (0,0)")
-
-        if (optElements):
-            def makeOptionalList(n):
-                if n>1:
-                    return Optional(self + makeOptionalList(n-1))
-                else:
-                    return Optional(self)
-            if minElements:
-                if minElements == 1:
-                    ret = self + makeOptionalList(optElements)
-                else:
-                    ret = And([self]*minElements) + makeOptionalList(optElements)
-            else:
-                ret = makeOptionalList(optElements)
-        else:
-            if minElements == 1:
-                ret = self
-            else:
-                ret = And([self]*minElements)
-        return ret
-
-    def __rmul__(self, other):
-        return self.__mul__(other)
-
-    def __or__(self, other ):
-        """
-        Implementation of | operator - returns C{L{MatchFirst}}
-        """
-        if isinstance( other, basestring ):
-            other = ParserElement._literalStringClass( other )
-        if not isinstance( other, ParserElement ):
-            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
-                    SyntaxWarning, stacklevel=2)
-            return None
-        return MatchFirst( [ self, other ] )
-
-    def __ror__(self, other ):
-        """
-        Implementation of | operator when left operand is not a C{L{ParserElement}}
-        """
-        if isinstance( other, basestring ):
-            other = ParserElement._literalStringClass( other )
-        if not isinstance( other, ParserElement ):
-            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
-                    SyntaxWarning, stacklevel=2)
-            return None
-        return other | self
-
-    def __xor__(self, other ):
-        """
-        Implementation of ^ operator - returns C{L{Or}}
-        """
-        if isinstance( other, basestring ):
-            other = ParserElement._literalStringClass( other )
-        if not isinstance( other, ParserElement ):
-            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
-                    SyntaxWarning, stacklevel=2)
-            return None
-        return Or( [ self, other ] )
-
-    def __rxor__(self, other ):
-        """
-        Implementation of ^ operator when left operand is not a C{L{ParserElement}}
-        """
-        if isinstance( other, basestring ):
-            other = ParserElement._literalStringClass( other )
-        if not isinstance( other, ParserElement ):
-            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
-                    SyntaxWarning, stacklevel=2)
-            return None
-        return other ^ self
-
-    def __and__(self, other ):
-        """
-        Implementation of & operator - returns C{L{Each}}
-        """
-        if isinstance( other, basestring ):
-            other = ParserElement._literalStringClass( other )
-        if not isinstance( other, ParserElement ):
-            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
-                    SyntaxWarning, stacklevel=2)
-            return None
-        return Each( [ self, other ] )
-
-    def __rand__(self, other ):
-        """
-        Implementation of & operator when left operand is not a C{L{ParserElement}}
-        """
-        if isinstance( other, basestring ):
-            other = ParserElement._literalStringClass( other )
-        if not isinstance( other, ParserElement ):
-            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
-                    SyntaxWarning, stacklevel=2)
-            return None
-        return other & self
-
-    def __invert__( self ):
-        """
-        Implementation of ~ operator - returns C{L{NotAny}}
-        """
-        return NotAny( self )
-
-    def __call__(self, name=None):
-        """
-        Shortcut for C{L{setResultsName}}, with C{listAllMatches=False}.
-        
-        If C{name} is given with a trailing C{'*'} character, then C{listAllMatches} will be
-        passed as C{True}.
-           
-        If C{name} is omitted, same as calling C{L{copy}}.
-
-        Example::
-            # these are equivalent
-            userdata = Word(alphas).setResultsName("name") + Word(nums+"-").setResultsName("socsecno")
-            userdata = Word(alphas)("name") + Word(nums+"-")("socsecno")             
-        """
-        if name is not None:
-            return self.setResultsName(name)
-        else:
-            return self.copy()
-
-    def suppress( self ):
-        """
-        Suppresses the output of this C{ParserElement}; useful to keep punctuation from
-        cluttering up returned output.
-        """
-        return Suppress( self )
-
-    def leaveWhitespace( self ):
-        """
-        Disables the skipping of whitespace before matching the characters in the
-        C{ParserElement}'s defined pattern.  This is normally only used internally by
-        the pyparsing module, but may be needed in some whitespace-sensitive grammars.
-        """
-        self.skipWhitespace = False
-        return self
-
-    def setWhitespaceChars( self, chars ):
-        """
-        Overrides the default whitespace chars
-        """
-        self.skipWhitespace = True
-        self.whiteChars = chars
-        self.copyDefaultWhiteChars = False
-        return self
-
-    def parseWithTabs( self ):
-        """
-        Overrides default behavior to expand C{<TAB>}s to spaces before parsing the input string.
-        Must be called before C{parseString} when the input grammar contains elements that
-        match C{<TAB>} characters.
-        """
-        self.keepTabs = True
-        return self
-
-    def ignore( self, other ):
-        """
-        Define expression to be ignored (e.g., comments) while doing pattern
-        matching; may be called repeatedly, to define multiple comment or other
-        ignorable patterns.
-        
-        Example::
-            patt = OneOrMore(Word(alphas))
-            patt.parseString('ablaj /* comment */ lskjd') # -> ['ablaj']
-            
-            patt.ignore(cStyleComment)
-            patt.parseString('ablaj /* comment */ lskjd') # -> ['ablaj', 'lskjd']
-        """
-        if isinstance(other, basestring):
-            other = Suppress(other)
-
-        if isinstance( other, Suppress ):
-            if other not in self.ignoreExprs:
-                self.ignoreExprs.append(other)
-        else:
-            self.ignoreExprs.append( Suppress( other.copy() ) )
-        return self
-
-    def setDebugActions( self, startAction, successAction, exceptionAction ):
-        """
-        Enable display of debugging messages while doing pattern matching.
-        """
-        self.debugActions = (startAction or _defaultStartDebugAction,
-                             successAction or _defaultSuccessDebugAction,
-                             exceptionAction or _defaultExceptionDebugAction)
-        self.debug = True
-        return self
-
-    def setDebug( self, flag=True ):
-        """
-        Enable display of debugging messages while doing pattern matching.
-        Set C{flag} to True to enable, False to disable.
-
-        Example::
-            wd = Word(alphas).setName("alphaword")
-            integer = Word(nums).setName("numword")
-            term = wd | integer
-            
-            # turn on debugging for wd
-            wd.setDebug()
-
-            OneOrMore(term).parseString("abc 123 xyz 890")
-        
-        prints::
-            Match alphaword at loc 0(1,1)
-            Matched alphaword -> ['abc']
-            Match alphaword at loc 3(1,4)
-            Exception raised:Expected alphaword (at char 4), (line:1, col:5)
-            Match alphaword at loc 7(1,8)
-            Matched alphaword -> ['xyz']
-            Match alphaword at loc 11(1,12)
-            Exception raised:Expected alphaword (at char 12), (line:1, col:13)
-            Match alphaword at loc 15(1,16)
-            Exception raised:Expected alphaword (at char 15), (line:1, col:16)
-
-        The output shown is that produced by the default debug actions - custom debug actions can be
-        specified using L{setDebugActions}. Prior to attempting
-        to match the C{wd} expression, the debugging message C{"Match <exprname> at loc <n>(<line>,<col>)"}
-        is shown. Then if the parse succeeds, a C{"Matched"} message is shown, or an C{"Exception raised"}
-        message is shown. Also note the use of L{setName} to assign a human-readable name to the expression,
-        which makes debugging and exception messages easier to understand - for instance, the default
-        name created for the C{Word} expression without calling C{setName} is C{"W:(ABCD...)"}.
-        """
-        if flag:
-            self.setDebugActions( _defaultStartDebugAction, _defaultSuccessDebugAction, _defaultExceptionDebugAction )
-        else:
-            self.debug = False
-        return self
-
-    def __str__( self ):
-        return self.name
-
-    def __repr__( self ):
-        return _ustr(self)
-
-    def streamline( self ):
-        self.streamlined = True
-        self.strRepr = None
-        return self
-
-    def checkRecursion( self, parseElementList ):
-        pass
-
-    def validate( self, validateTrace=[] ):
-        """
-        Check defined expressions for valid structure, check for infinite recursive definitions.
-        """
-        self.checkRecursion( [] )
-
-    def parseFile( self, file_or_filename, parseAll=False ):
-        """
-        Execute the parse expression on the given file or filename.
-        If a filename is specified (instead of a file object),
-        the entire file is opened, read, and closed before parsing.
-        """
-        try:
-            file_contents = file_or_filename.read()
-        except AttributeError:
-            with open(file_or_filename, "r") as f:
-                file_contents = f.read()
-        try:
-            return self.parseString(file_contents, parseAll)
-        except ParseBaseException as exc:
-            if ParserElement.verbose_stacktrace:
-                raise
-            else:
-                # catch and re-raise exception from here, clears out pyparsing internal stack trace
-                raise exc
-
-    def __eq__(self,other):
-        if isinstance(other, ParserElement):
-            return self is other or vars(self) == vars(other)
-        elif isinstance(other, basestring):
-            return self.matches(other)
-        else:
-            return super(ParserElement,self)==other
-
-    def __ne__(self,other):
-        return not (self == other)
-
-    def __hash__(self):
-        return hash(id(self))
-
-    def __req__(self,other):
-        return self == other
-
-    def __rne__(self,other):
-        return not (self == other)
-
-    def matches(self, testString, parseAll=True):
-        """
-        Method for quick testing of a parser against a test string. Good for simple 
-        inline microtests of sub expressions while building up larger parser.
-           
-        Parameters:
-         - testString - to test against this expression for a match
-         - parseAll - (default=C{True}) - flag to pass to C{L{parseString}} when running tests
-            
-        Example::
-            expr = Word(nums)
-            assert expr.matches("100")
-        """
-        try:
-            self.parseString(_ustr(testString), parseAll=parseAll)
-            return True
-        except ParseBaseException:
-            return False
-                
-    def runTests(self, tests, parseAll=True, comment='#', fullDump=True, printResults=True, failureTests=False):
-        """
-        Execute the parse expression on a series of test strings, showing each
-        test, the parsed results or where the parse failed. Quick and easy way to
-        run a parse expression against a list of sample strings.
-           
-        Parameters:
-         - tests - a list of separate test strings, or a multiline string of test strings
-         - parseAll - (default=C{True}) - flag to pass to C{L{parseString}} when running tests           
-         - comment - (default=C{'#'}) - expression for indicating embedded comments in the test 
-              string; pass None to disable comment filtering
-         - fullDump - (default=C{True}) - dump results as list followed by results names in nested outline;
-              if False, only dump nested list
-         - printResults - (default=C{True}) prints test output to stdout
-         - failureTests - (default=C{False}) indicates if these tests are expected to fail parsing
-
-        Returns: a (success, results) tuple, where success indicates that all tests succeeded
-        (or failed if C{failureTests} is True), and the results contain a list of lines of each 
-        test's output
-        
-        Example::
-            number_expr = pyparsing_common.number.copy()
-
-            result = number_expr.runTests('''
-                # unsigned integer
-                100
-                # negative integer
-                -100
-                # float with scientific notation
-                6.02e23
-                # integer with scientific notation
-                1e-12
-                ''')
-            print("Success" if result[0] else "Failed!")
-
-            result = number_expr.runTests('''
-                # stray character
-                100Z
-                # missing leading digit before '.'
-                -.100
-                # too many '.'
-                3.14.159
-                ''', failureTests=True)
-            print("Success" if result[0] else "Failed!")
-        prints::
-            # unsigned integer
-            100
-            [100]
-
-            # negative integer
-            -100
-            [-100]
-
-            # float with scientific notation
-            6.02e23
-            [6.02e+23]
-
-            # integer with scientific notation
-            1e-12
-            [1e-12]
-
-            Success
-            
-            # stray character
-            100Z
-               ^
-            FAIL: Expected end of text (at char 3), (line:1, col:4)
-
-            # missing leading digit before '.'
-            -.100
-            ^
-            FAIL: Expected {real number with scientific notation | real number | signed integer} (at char 0), (line:1, col:1)
-
-            # too many '.'
-            3.14.159
-                ^
-            FAIL: Expected end of text (at char 4), (line:1, col:5)
-
-            Success
-
-        Each test string must be on a single line. If you want to test a string that spans multiple
-        lines, create a test like this::
-
-            expr.runTest(r"this is a test\\n of strings that spans \\n 3 lines")
-        
-        (Note that this is a raw string literal, you must include the leading 'r'.)
-        """
-        if isinstance(tests, basestring):
-            tests = list(map(str.strip, tests.rstrip().splitlines()))
-        if isinstance(comment, basestring):
-            comment = Literal(comment)
-        allResults = []
-        comments = []
-        success = True
-        for t in tests:
-            if comment is not None and comment.matches(t, False) or comments and not t:
-                comments.append(t)
-                continue
-            if not t:
-                continue
-            out = ['\n'.join(comments), t]
-            comments = []
-            try:
-                t = t.replace(r'\n','\n')
-                result = self.parseString(t, parseAll=parseAll)
-                out.append(result.dump(full=fullDump))
-                success = success and not failureTests
-            except ParseBaseException as pe:
-                fatal = "(FATAL)" if isinstance(pe, ParseFatalException) else ""
-                if '\n' in t:
-                    out.append(line(pe.loc, t))
-                    out.append(' '*(col(pe.loc,t)-1) + '^' + fatal)
-                else:
-                    out.append(' '*pe.loc + '^' + fatal)
-                out.append("FAIL: " + str(pe))
-                success = success and failureTests
-                result = pe
-            except Exception as exc:
-                out.append("FAIL-EXCEPTION: " + str(exc))
-                success = success and failureTests
-                result = exc
-
-            if printResults:
-                if fullDump:
-                    out.append('')
-                print('\n'.join(out))
-
-            allResults.append((t, result))
-        
-        return success, allResults
-
-        
-class Token(ParserElement):
-    """
-    Abstract C{ParserElement} subclass, for defining atomic matching patterns.
-    """
-    def __init__( self ):
-        super(Token,self).__init__( savelist=False )
-
-
-class Empty(Token):
-    """
-    An empty token, will always match.
-    """
-    def __init__( self ):
-        super(Empty,self).__init__()
-        self.name = "Empty"
-        self.mayReturnEmpty = True
-        self.mayIndexError = False
-
-
-class NoMatch(Token):
-    """
-    A token that will never match.
-    """
-    def __init__( self ):
-        super(NoMatch,self).__init__()
-        self.name = "NoMatch"
-        self.mayReturnEmpty = True
-        self.mayIndexError = False
-        self.errmsg = "Unmatchable token"
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        raise ParseException(instring, loc, self.errmsg, self)
-
-
-class Literal(Token):
-    """
-    Token to exactly match a specified string.
-    
-    Example::
-        Literal('blah').parseString('blah')  # -> ['blah']
-        Literal('blah').parseString('blahfooblah')  # -> ['blah']
-        Literal('blah').parseString('bla')  # -> Exception: Expected "blah"
-    
-    For case-insensitive matching, use L{CaselessLiteral}.
-    
-    For keyword matching (force word break before and after the matched string),
-    use L{Keyword} or L{CaselessKeyword}.
-    """
-    def __init__( self, matchString ):
-        super(Literal,self).__init__()
-        self.match = matchString
-        self.matchLen = len(matchString)
-        try:
-            self.firstMatchChar = matchString[0]
-        except IndexError:
-            warnings.warn("null string passed to Literal; use Empty() instead",
-                            SyntaxWarning, stacklevel=2)
-            self.__class__ = Empty
-        self.name = '"%s"' % _ustr(self.match)
-        self.errmsg = "Expected " + self.name
-        self.mayReturnEmpty = False
-        self.mayIndexError = False
-
-    # Performance tuning: this routine gets called a *lot*
-    # if this is a single character match string  and the first character matches,
-    # short-circuit as quickly as possible, and avoid calling startswith
-    #~ @profile
-    def parseImpl( self, instring, loc, doActions=True ):
-        if (instring[loc] == self.firstMatchChar and
-            (self.matchLen==1 or instring.startswith(self.match,loc)) ):
-            return loc+self.matchLen, self.match
-        raise ParseException(instring, loc, self.errmsg, self)
-_L = Literal
-ParserElement._literalStringClass = Literal
-
-class Keyword(Token):
-    """
-    Token to exactly match a specified string as a keyword, that is, it must be
-    immediately followed by a non-keyword character.  Compare with C{L{Literal}}:
-     - C{Literal("if")} will match the leading C{'if'} in C{'ifAndOnlyIf'}.
-     - C{Keyword("if")} will not; it will only match the leading C{'if'} in C{'if x=1'}, or C{'if(y==2)'}
-    Accepts two optional constructor arguments in addition to the keyword string:
-     - C{identChars} is a string of characters that would be valid identifier characters,
-          defaulting to all alphanumerics + "_" and "$"
-     - C{caseless} allows case-insensitive matching, default is C{False}.
-       
-    Example::
-        Keyword("start").parseString("start")  # -> ['start']
-        Keyword("start").parseString("starting")  # -> Exception
-
-    For case-insensitive matching, use L{CaselessKeyword}.
-    """
-    DEFAULT_KEYWORD_CHARS = alphanums+"_$"
-
-    def __init__( self, matchString, identChars=None, caseless=False ):
-        super(Keyword,self).__init__()
-        if identChars is None:
-            identChars = Keyword.DEFAULT_KEYWORD_CHARS
-        self.match = matchString
-        self.matchLen = len(matchString)
-        try:
-            self.firstMatchChar = matchString[0]
-        except IndexError:
-            warnings.warn("null string passed to Keyword; use Empty() instead",
-                            SyntaxWarning, stacklevel=2)
-        self.name = '"%s"' % self.match
-        self.errmsg = "Expected " + self.name
-        self.mayReturnEmpty = False
-        self.mayIndexError = False
-        self.caseless = caseless
-        if caseless:
-            self.caselessmatch = matchString.upper()
-            identChars = identChars.upper()
-        self.identChars = set(identChars)
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        if self.caseless:
-            if ( (instring[ loc:loc+self.matchLen ].upper() == self.caselessmatch) and
-                 (loc >= len(instring)-self.matchLen or instring[loc+self.matchLen].upper() not in self.identChars) and
-                 (loc == 0 or instring[loc-1].upper() not in self.identChars) ):
-                return loc+self.matchLen, self.match
-        else:
-            if (instring[loc] == self.firstMatchChar and
-                (self.matchLen==1 or instring.startswith(self.match,loc)) and
-                (loc >= len(instring)-self.matchLen or instring[loc+self.matchLen] not in self.identChars) and
-                (loc == 0 or instring[loc-1] not in self.identChars) ):
-                return loc+self.matchLen, self.match
-        raise ParseException(instring, loc, self.errmsg, self)
-
-    def copy(self):
-        c = super(Keyword,self).copy()
-        c.identChars = Keyword.DEFAULT_KEYWORD_CHARS
-        return c
-
-    @staticmethod
-    def setDefaultKeywordChars( chars ):
-        """Overrides the default Keyword chars
-        """
-        Keyword.DEFAULT_KEYWORD_CHARS = chars
-
-class CaselessLiteral(Literal):
-    """
-    Token to match a specified string, ignoring case of letters.
-    Note: the matched results will always be in the case of the given
-    match string, NOT the case of the input text.
-
-    Example::
-        OneOrMore(CaselessLiteral("CMD")).parseString("cmd CMD Cmd10") # -> ['CMD', 'CMD', 'CMD']
-        
-    (Contrast with example for L{CaselessKeyword}.)
-    """
-    def __init__( self, matchString ):
-        super(CaselessLiteral,self).__init__( matchString.upper() )
-        # Preserve the defining literal.
-        self.returnString = matchString
-        self.name = "'%s'" % self.returnString
-        self.errmsg = "Expected " + self.name
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        if instring[ loc:loc+self.matchLen ].upper() == self.match:
-            return loc+self.matchLen, self.returnString
-        raise ParseException(instring, loc, self.errmsg, self)
-
-class CaselessKeyword(Keyword):
-    """
-    Caseless version of L{Keyword}.
-
-    Example::
-        OneOrMore(CaselessKeyword("CMD")).parseString("cmd CMD Cmd10") # -> ['CMD', 'CMD']
-        
-    (Contrast with example for L{CaselessLiteral}.)
-    """
-    def __init__( self, matchString, identChars=None ):
-        super(CaselessKeyword,self).__init__( matchString, identChars, caseless=True )
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        if ( (instring[ loc:loc+self.matchLen ].upper() == self.caselessmatch) and
-             (loc >= len(instring)-self.matchLen or instring[loc+self.matchLen].upper() not in self.identChars) ):
-            return loc+self.matchLen, self.match
-        raise ParseException(instring, loc, self.errmsg, self)
-
-class CloseMatch(Token):
-    """
-    A variation on L{Literal} which matches "close" matches, that is, 
-    strings with at most 'n' mismatching characters. C{CloseMatch} takes parameters:
-     - C{match_string} - string to be matched
-     - C{maxMismatches} - (C{default=1}) maximum number of mismatches allowed to count as a match
-    
-    The results from a successful parse will contain the matched text from the input string and the following named results:
-     - C{mismatches} - a list of the positions within the match_string where mismatches were found
-     - C{original} - the original match_string used to compare against the input string
-    
-    If C{mismatches} is an empty list, then the match was an exact match.
-    
-    Example::
-        patt = CloseMatch("ATCATCGAATGGA")
-        patt.parseString("ATCATCGAAXGGA") # -> (['ATCATCGAAXGGA'], {'mismatches': [[9]], 'original': ['ATCATCGAATGGA']})
-        patt.parseString("ATCAXCGAAXGGA") # -> Exception: Expected 'ATCATCGAATGGA' (with up to 1 mismatches) (at char 0), (line:1, col:1)
-
-        # exact match
-        patt.parseString("ATCATCGAATGGA") # -> (['ATCATCGAATGGA'], {'mismatches': [[]], 'original': ['ATCATCGAATGGA']})
-
-        # close match allowing up to 2 mismatches
-        patt = CloseMatch("ATCATCGAATGGA", maxMismatches=2)
-        patt.parseString("ATCAXCGAAXGGA") # -> (['ATCAXCGAAXGGA'], {'mismatches': [[4, 9]], 'original': ['ATCATCGAATGGA']})
-    """
-    def __init__(self, match_string, maxMismatches=1):
-        super(CloseMatch,self).__init__()
-        self.name = match_string
-        self.match_string = match_string
-        self.maxMismatches = maxMismatches
-        self.errmsg = "Expected %r (with up to %d mismatches)" % (self.match_string, self.maxMismatches)
-        self.mayIndexError = False
-        self.mayReturnEmpty = False
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        start = loc
-        instrlen = len(instring)
-        maxloc = start + len(self.match_string)
-
-        if maxloc <= instrlen:
-            match_string = self.match_string
-            match_stringloc = 0
-            mismatches = []
-            maxMismatches = self.maxMismatches
-
-            for match_stringloc,s_m in enumerate(zip(instring[loc:maxloc], self.match_string)):
-                src,mat = s_m
-                if src != mat:
-                    mismatches.append(match_stringloc)
-                    if len(mismatches) > maxMismatches:
-                        break
-            else:
-                loc = match_stringloc + 1
-                results = ParseResults([instring[start:loc]])
-                results['original'] = self.match_string
-                results['mismatches'] = mismatches
-                return loc, results
-
-        raise ParseException(instring, loc, self.errmsg, self)
-
-
-class Word(Token):
-    """
-    Token for matching words composed of allowed character sets.
-    Defined with string containing all allowed initial characters,
-    an optional string containing allowed body characters (if omitted,
-    defaults to the initial character set), and an optional minimum,
-    maximum, and/or exact length.  The default value for C{min} is 1 (a
-    minimum value < 1 is not valid); the default values for C{max} and C{exact}
-    are 0, meaning no maximum or exact length restriction. An optional
-    C{excludeChars} parameter can list characters that might be found in 
-    the input C{bodyChars} string; useful to define a word of all printables
-    except for one or two characters, for instance.
-    
-    L{srange} is useful for defining custom character set strings for defining 
-    C{Word} expressions, using range notation from regular expression character sets.
-    
-    A common mistake is to use C{Word} to match a specific literal string, as in 
-    C{Word("Address")}. Remember that C{Word} uses the string argument to define
-    I{sets} of matchable characters. This expression would match "Add", "AAA",
-    "dAred", or any other word made up of the characters 'A', 'd', 'r', 'e', and 's'.
-    To match an exact literal string, use L{Literal} or L{Keyword}.
-
-    pyparsing includes helper strings for building Words:
-     - L{alphas}
-     - L{nums}
-     - L{alphanums}
-     - L{hexnums}
-     - L{alphas8bit} (alphabetic characters in ASCII range 128-255 - accented, tilded, umlauted, etc.)
-     - L{punc8bit} (non-alphabetic characters in ASCII range 128-255 - currency, symbols, superscripts, diacriticals, etc.)
-     - L{printables} (any non-whitespace character)
-
-    Example::
-        # a word composed of digits
-        integer = Word(nums) # equivalent to Word("0123456789") or Word(srange("0-9"))
-        
-        # a word with a leading capital, and zero or more lowercase
-        capital_word = Word(alphas.upper(), alphas.lower())
-
-        # hostnames are alphanumeric, with leading alpha, and '-'
-        hostname = Word(alphas, alphanums+'-')
-        
-        # roman numeral (not a strict parser, accepts invalid mix of characters)
-        roman = Word("IVXLCDM")
-        
-        # any string of non-whitespace characters, except for ','
-        csv_value = Word(printables, excludeChars=",")
-    """
-    def __init__( self, initChars, bodyChars=None, min=1, max=0, exact=0, asKeyword=False, excludeChars=None ):
-        super(Word,self).__init__()
-        if excludeChars:
-            initChars = ''.join(c for c in initChars if c not in excludeChars)
-            if bodyChars:
-                bodyChars = ''.join(c for c in bodyChars if c not in excludeChars)
-        self.initCharsOrig = initChars
-        self.initChars = set(initChars)
-        if bodyChars :
-            self.bodyCharsOrig = bodyChars
-            self.bodyChars = set(bodyChars)
-        else:
-            self.bodyCharsOrig = initChars
-            self.bodyChars = set(initChars)
-
-        self.maxSpecified = max > 0
-
-        if min < 1:
-            raise ValueError("cannot specify a minimum length < 1; use Optional(Word()) if zero-length word is permitted")
-
-        self.minLen = min
-
-        if max > 0:
-            self.maxLen = max
-        else:
-            self.maxLen = _MAX_INT
-
-        if exact > 0:
-            self.maxLen = exact
-            self.minLen = exact
-
-        self.name = _ustr(self)
-        self.errmsg = "Expected " + self.name
-        self.mayIndexError = False
-        self.asKeyword = asKeyword
-
-        if ' ' not in self.initCharsOrig+self.bodyCharsOrig and (min==1 and max==0 and exact==0):
-            if self.bodyCharsOrig == self.initCharsOrig:
-                self.reString = "[%s]+" % _escapeRegexRangeChars(self.initCharsOrig)
-            elif len(self.initCharsOrig) == 1:
-                self.reString = "%s[%s]*" % \
-                                      (re.escape(self.initCharsOrig),
-                                      _escapeRegexRangeChars(self.bodyCharsOrig),)
-            else:
-                self.reString = "[%s][%s]*" % \
-                                      (_escapeRegexRangeChars(self.initCharsOrig),
-                                      _escapeRegexRangeChars(self.bodyCharsOrig),)
-            if self.asKeyword:
-                self.reString = r"\b"+self.reString+r"\b"
-            try:
-                self.re = re.compile( self.reString )
-            except Exception:
-                self.re = None
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        if self.re:
-            result = self.re.match(instring,loc)
-            if not result:
-                raise ParseException(instring, loc, self.errmsg, self)
-
-            loc = result.end()
-            return loc, result.group()
-
-        if not(instring[ loc ] in self.initChars):
-            raise ParseException(instring, loc, self.errmsg, self)
-
-        start = loc
-        loc += 1
-        instrlen = len(instring)
-        bodychars = self.bodyChars
-        maxloc = start + self.maxLen
-        maxloc = min( maxloc, instrlen )
-        while loc < maxloc and instring[loc] in bodychars:
-            loc += 1
-
-        throwException = False
-        if loc - start < self.minLen:
-            throwException = True
-        if self.maxSpecified and loc < instrlen and instring[loc] in bodychars:
-            throwException = True
-        if self.asKeyword:
-            if (start>0 and instring[start-1] in bodychars) or (loc<instrlen and instring[loc] in bodychars):
-                throwException = True
-
-        if throwException:
-            raise ParseException(instring, loc, self.errmsg, self)
-
-        return loc, instring[start:loc]
-
-    def __str__( self ):
-        try:
-            return super(Word,self).__str__()
-        except Exception:
-            pass
-
-
-        if self.strRepr is None:
-
-            def charsAsStr(s):
-                if len(s)>4:
-                    return s[:4]+"..."
-                else:
-                    return s
-
-            if ( self.initCharsOrig != self.bodyCharsOrig ):
-                self.strRepr = "W:(%s,%s)" % ( charsAsStr(self.initCharsOrig), charsAsStr(self.bodyCharsOrig) )
-            else:
-                self.strRepr = "W:(%s)" % charsAsStr(self.initCharsOrig)
-
-        return self.strRepr
-
-
-class Regex(Token):
-    r"""
-    Token for matching strings that match a given regular expression.
-    Defined with string specifying the regular expression in a form recognized by the inbuilt Python re module.
-    If the given regex contains named groups (defined using C{(?P<name>...)}), these will be preserved as 
-    named parse results.
-
-    Example::
-        realnum = Regex(r"[+-]?\d+\.\d*")
-        date = Regex(r'(?P<year>\d{4})-(?P<month>\d\d?)-(?P<day>\d\d?)')
-        # ref: http://stackoverflow.com/questions/267399/how-do-you-match-only-valid-roman-numerals-with-a-regular-expression
-        roman = Regex(r"M{0,4}(CM|CD|D?C{0,3})(XC|XL|L?X{0,3})(IX|IV|V?I{0,3})")
-    """
-    compiledREtype = type(re.compile("[A-Z]"))
-    def __init__( self, pattern, flags=0):
-        """The parameters C{pattern} and C{flags} are passed to the C{re.compile()} function as-is. See the Python C{re} module for an explanation of the acceptable patterns and flags."""
-        super(Regex,self).__init__()
-
-        if isinstance(pattern, basestring):
-            if not pattern:
-                warnings.warn("null string passed to Regex; use Empty() instead",
-                        SyntaxWarning, stacklevel=2)
-
-            self.pattern = pattern
-            self.flags = flags
-
-            try:
-                self.re = re.compile(self.pattern, self.flags)
-                self.reString = self.pattern
-            except sre_constants.error:
-                warnings.warn("invalid pattern (%s) passed to Regex" % pattern,
-                    SyntaxWarning, stacklevel=2)
-                raise
-
-        elif isinstance(pattern, Regex.compiledREtype):
-            self.re = pattern
-            self.pattern = \
-            self.reString = str(pattern)
-            self.flags = flags
-            
-        else:
-            raise ValueError("Regex may only be constructed with a string or a compiled RE object")
-
-        self.name = _ustr(self)
-        self.errmsg = "Expected " + self.name
-        self.mayIndexError = False
-        self.mayReturnEmpty = True
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        result = self.re.match(instring,loc)
-        if not result:
-            raise ParseException(instring, loc, self.errmsg, self)
-
-        loc = result.end()
-        d = result.groupdict()
-        ret = ParseResults(result.group())
-        if d:
-            for k in d:
-                ret[k] = d[k]
-        return loc,ret
-
-    def __str__( self ):
-        try:
-            return super(Regex,self).__str__()
-        except Exception:
-            pass
-
-        if self.strRepr is None:
-            self.strRepr = "Re:(%s)" % repr(self.pattern)
-
-        return self.strRepr
-
-
-class QuotedString(Token):
-    r"""
-    Token for matching strings that are delimited by quoting characters.
-    
-    Defined with the following parameters:
-        - quoteChar - string of one or more characters defining the quote delimiting string
-        - escChar - character to escape quotes, typically backslash (default=C{None})
-        - escQuote - special quote sequence to escape an embedded quote string (such as SQL's "" to escape an embedded ") (default=C{None})
-        - multiline - boolean indicating whether quotes can span multiple lines (default=C{False})
-        - unquoteResults - boolean indicating whether the matched text should be unquoted (default=C{True})
-        - endQuoteChar - string of one or more characters defining the end of the quote delimited string (default=C{None} => same as quoteChar)
-        - convertWhitespaceEscapes - convert escaped whitespace (C{'\t'}, C{'\n'}, etc.) to actual whitespace (default=C{True})
-
-    Example::
-        qs = QuotedString('"')
-        print(qs.searchString('lsjdf "This is the quote" sldjf'))
-        complex_qs = QuotedString('{{', endQuoteChar='}}')
-        print(complex_qs.searchString('lsjdf {{This is the "quote"}} sldjf'))
-        sql_qs = QuotedString('"', escQuote='""')
-        print(sql_qs.searchString('lsjdf "This is the quote with ""embedded"" quotes" sldjf'))
-    prints::
-        [['This is the quote']]
-        [['This is the "quote"']]
-        [['This is the quote with "embedded" quotes']]
-    """
-    def __init__( self, quoteChar, escChar=None, escQuote=None, multiline=False, unquoteResults=True, endQuoteChar=None, convertWhitespaceEscapes=True):
-        super(QuotedString,self).__init__()
-
-        # remove white space from quote chars - wont work anyway
-        quoteChar = quoteChar.strip()
-        if not quoteChar:
-            warnings.warn("quoteChar cannot be the empty string",SyntaxWarning,stacklevel=2)
-            raise SyntaxError()
-
-        if endQuoteChar is None:
-            endQuoteChar = quoteChar
-        else:
-            endQuoteChar = endQuoteChar.strip()
-            if not endQuoteChar:
-                warnings.warn("endQuoteChar cannot be the empty string",SyntaxWarning,stacklevel=2)
-                raise SyntaxError()
-
-        self.quoteChar = quoteChar
-        self.quoteCharLen = len(quoteChar)
-        self.firstQuoteChar = quoteChar[0]
-        self.endQuoteChar = endQuoteChar
-        self.endQuoteCharLen = len(endQuoteChar)
-        self.escChar = escChar
-        self.escQuote = escQuote
-        self.unquoteResults = unquoteResults
-        self.convertWhitespaceEscapes = convertWhitespaceEscapes
-
-        if multiline:
-            self.flags = re.MULTILINE | re.DOTALL
-            self.pattern = r'%s(?:[^%s%s]' % \
-                ( re.escape(self.quoteChar),
-                  _escapeRegexRangeChars(self.endQuoteChar[0]),
-                  (escChar is not None and _escapeRegexRangeChars(escChar) or '') )
-        else:
-            self.flags = 0
-            self.pattern = r'%s(?:[^%s\n\r%s]' % \
-                ( re.escape(self.quoteChar),
-                  _escapeRegexRangeChars(self.endQuoteChar[0]),
-                  (escChar is not None and _escapeRegexRangeChars(escChar) or '') )
-        if len(self.endQuoteChar) > 1:
-            self.pattern += (
-                '|(?:' + ')|(?:'.join("%s[^%s]" % (re.escape(self.endQuoteChar[:i]),
-                                               _escapeRegexRangeChars(self.endQuoteChar[i]))
-                                    for i in range(len(self.endQuoteChar)-1,0,-1)) + ')'
-                )
-        if escQuote:
-            self.pattern += (r'|(?:%s)' % re.escape(escQuote))
-        if escChar:
-            self.pattern += (r'|(?:%s.)' % re.escape(escChar))
-            self.escCharReplacePattern = re.escape(self.escChar)+"(.)"
-        self.pattern += (r')*%s' % re.escape(self.endQuoteChar))
-
-        try:
-            self.re = re.compile(self.pattern, self.flags)
-            self.reString = self.pattern
-        except sre_constants.error:
-            warnings.warn("invalid pattern (%s) passed to Regex" % self.pattern,
-                SyntaxWarning, stacklevel=2)
-            raise
-
-        self.name = _ustr(self)
-        self.errmsg = "Expected " + self.name
-        self.mayIndexError = False
-        self.mayReturnEmpty = True
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        result = instring[loc] == self.firstQuoteChar and self.re.match(instring,loc) or None
-        if not result:
-            raise ParseException(instring, loc, self.errmsg, self)
-
-        loc = result.end()
-        ret = result.group()
-
-        if self.unquoteResults:
-
-            # strip off quotes
-            ret = ret[self.quoteCharLen:-self.endQuoteCharLen]
-
-            if isinstance(ret,basestring):
-                # replace escaped whitespace
-                if '\\' in ret and self.convertWhitespaceEscapes:
-                    ws_map = {
-                        r'\t' : '\t',
-                        r'\n' : '\n',
-                        r'\f' : '\f',
-                        r'\r' : '\r',
-                    }
-                    for wslit,wschar in ws_map.items():
-                        ret = ret.replace(wslit, wschar)
-
-                # replace escaped characters
-                if self.escChar:
-                    ret = re.sub(self.escCharReplacePattern, r"\g<1>", ret)
-
-                # replace escaped quotes
-                if self.escQuote:
-                    ret = ret.replace(self.escQuote, self.endQuoteChar)
-
-        return loc, ret
-
-    def __str__( self ):
-        try:
-            return super(QuotedString,self).__str__()
-        except Exception:
-            pass
-
-        if self.strRepr is None:
-            self.strRepr = "quoted string, starting with %s ending with %s" % (self.quoteChar, self.endQuoteChar)
-
-        return self.strRepr
-
-
-class CharsNotIn(Token):
-    """
-    Token for matching words composed of characters I{not} in a given set (will
-    include whitespace in matched characters if not listed in the provided exclusion set - see example).
-    Defined with string containing all disallowed characters, and an optional
-    minimum, maximum, and/or exact length.  The default value for C{min} is 1 (a
-    minimum value < 1 is not valid); the default values for C{max} and C{exact}
-    are 0, meaning no maximum or exact length restriction.
-
-    Example::
-        # define a comma-separated-value as anything that is not a ','
-        csv_value = CharsNotIn(',')
-        print(delimitedList(csv_value).parseString("dkls,lsdkjf,s12 34,@!#,213"))
-    prints::
-        ['dkls', 'lsdkjf', 's12 34', '@!#', '213']
-    """
-    def __init__( self, notChars, min=1, max=0, exact=0 ):
-        super(CharsNotIn,self).__init__()
-        self.skipWhitespace = False
-        self.notChars = notChars
-
-        if min < 1:
-            raise ValueError("cannot specify a minimum length < 1; use Optional(CharsNotIn()) if zero-length char group is permitted")
-
-        self.minLen = min
-
-        if max > 0:
-            self.maxLen = max
-        else:
-            self.maxLen = _MAX_INT
-
-        if exact > 0:
-            self.maxLen = exact
-            self.minLen = exact
-
-        self.name = _ustr(self)
-        self.errmsg = "Expected " + self.name
-        self.mayReturnEmpty = ( self.minLen == 0 )
-        self.mayIndexError = False
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        if instring[loc] in self.notChars:
-            raise ParseException(instring, loc, self.errmsg, self)
-
-        start = loc
-        loc += 1
-        notchars = self.notChars
-        maxlen = min( start+self.maxLen, len(instring) )
-        while loc < maxlen and \
-              (instring[loc] not in notchars):
-            loc += 1
-
-        if loc - start < self.minLen:
-            raise ParseException(instring, loc, self.errmsg, self)
-
-        return loc, instring[start:loc]
-
-    def __str__( self ):
-        try:
-            return super(CharsNotIn, self).__str__()
-        except Exception:
-            pass
-
-        if self.strRepr is None:
-            if len(self.notChars) > 4:
-                self.strRepr = "!W:(%s...)" % self.notChars[:4]
-            else:
-                self.strRepr = "!W:(%s)" % self.notChars
-
-        return self.strRepr
-
-class White(Token):
-    """
-    Special matching class for matching whitespace.  Normally, whitespace is ignored
-    by pyparsing grammars.  This class is included when some whitespace structures
-    are significant.  Define with a string containing the whitespace characters to be
-    matched; default is C{" \\t\\r\\n"}.  Also takes optional C{min}, C{max}, and C{exact} arguments,
-    as defined for the C{L{Word}} class.
-    """
-    whiteStrs = {
-        " " : "<SPC>",
-        "\t": "<TAB>",
-        "\n": "<LF>",
-        "\r": "<CR>",
-        "\f": "<FF>",
-        }
-    def __init__(self, ws=" \t\r\n", min=1, max=0, exact=0):
-        super(White,self).__init__()
-        self.matchWhite = ws
-        self.setWhitespaceChars( "".join(c for c in self.whiteChars if c not in self.matchWhite) )
-        #~ self.leaveWhitespace()
-        self.name = ("".join(White.whiteStrs[c] for c in self.matchWhite))
-        self.mayReturnEmpty = True
-        self.errmsg = "Expected " + self.name
-
-        self.minLen = min
-
-        if max > 0:
-            self.maxLen = max
-        else:
-            self.maxLen = _MAX_INT
-
-        if exact > 0:
-            self.maxLen = exact
-            self.minLen = exact
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        if not(instring[ loc ] in self.matchWhite):
-            raise ParseException(instring, loc, self.errmsg, self)
-        start = loc
-        loc += 1
-        maxloc = start + self.maxLen
-        maxloc = min( maxloc, len(instring) )
-        while loc < maxloc and instring[loc] in self.matchWhite:
-            loc += 1
-
-        if loc - start < self.minLen:
-            raise ParseException(instring, loc, self.errmsg, self)
-
-        return loc, instring[start:loc]
-
-
-class _PositionToken(Token):
-    def __init__( self ):
-        super(_PositionToken,self).__init__()
-        self.name=self.__class__.__name__
-        self.mayReturnEmpty = True
-        self.mayIndexError = False
-
-class GoToColumn(_PositionToken):
-    """
-    Token to advance to a specific column of input text; useful for tabular report scraping.
-    """
-    def __init__( self, colno ):
-        super(GoToColumn,self).__init__()
-        self.col = colno
-
-    def preParse( self, instring, loc ):
-        if col(loc,instring) != self.col:
-            instrlen = len(instring)
-            if self.ignoreExprs:
-                loc = self._skipIgnorables( instring, loc )
-            while loc < instrlen and instring[loc].isspace() and col( loc, instring ) != self.col :
-                loc += 1
-        return loc
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        thiscol = col( loc, instring )
-        if thiscol > self.col:
-            raise ParseException( instring, loc, "Text not in expected column", self )
-        newloc = loc + self.col - thiscol
-        ret = instring[ loc: newloc ]
-        return newloc, ret
-
-
-class LineStart(_PositionToken):
-    """
-    Matches if current position is at the beginning of a line within the parse string
-    
-    Example::
-    
-        test = '''\
-        AAA this line
-        AAA and this line
-          AAA but not this one
-        B AAA and definitely not this one
-        '''
-
-        for t in (LineStart() + 'AAA' + restOfLine).searchString(test):
-            print(t)
-    
-    Prints::
-        ['AAA', ' this line']
-        ['AAA', ' and this line']    
-
-    """
-    def __init__( self ):
-        super(LineStart,self).__init__()
-        self.errmsg = "Expected start of line"
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        if col(loc, instring) == 1:
-            return loc, []
-        raise ParseException(instring, loc, self.errmsg, self)
-
-class LineEnd(_PositionToken):
-    """
-    Matches if current position is at the end of a line within the parse string
-    """
-    def __init__( self ):
-        super(LineEnd,self).__init__()
-        self.setWhitespaceChars( ParserElement.DEFAULT_WHITE_CHARS.replace("\n","") )
-        self.errmsg = "Expected end of line"
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        if loc<len(instring):
-            if instring[loc] == "\n":
-                return loc+1, "\n"
-            else:
-                raise ParseException(instring, loc, self.errmsg, self)
-        elif loc == len(instring):
-            return loc+1, []
-        else:
-            raise ParseException(instring, loc, self.errmsg, self)
-
-class StringStart(_PositionToken):
-    """
-    Matches if current position is at the beginning of the parse string
-    """
-    def __init__( self ):
-        super(StringStart,self).__init__()
-        self.errmsg = "Expected start of text"
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        if loc != 0:
-            # see if entire string up to here is just whitespace and ignoreables
-            if loc != self.preParse( instring, 0 ):
-                raise ParseException(instring, loc, self.errmsg, self)
-        return loc, []
-
-class StringEnd(_PositionToken):
-    """
-    Matches if current position is at the end of the parse string
-    """
-    def __init__( self ):
-        super(StringEnd,self).__init__()
-        self.errmsg = "Expected end of text"
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        if loc < len(instring):
-            raise ParseException(instring, loc, self.errmsg, self)
-        elif loc == len(instring):
-            return loc+1, []
-        elif loc > len(instring):
-            return loc, []
-        else:
-            raise ParseException(instring, loc, self.errmsg, self)
-
-class WordStart(_PositionToken):
-    """
-    Matches if the current position is at the beginning of a Word, and
-    is not preceded by any character in a given set of C{wordChars}
-    (default=C{printables}). To emulate the C{\b} behavior of regular expressions,
-    use C{WordStart(alphanums)}. C{WordStart} will also match at the beginning of
-    the string being parsed, or at the beginning of a line.
-    """
-    def __init__(self, wordChars = printables):
-        super(WordStart,self).__init__()
-        self.wordChars = set(wordChars)
-        self.errmsg = "Not at the start of a word"
-
-    def parseImpl(self, instring, loc, doActions=True ):
-        if loc != 0:
-            if (instring[loc-1] in self.wordChars or
-                instring[loc] not in self.wordChars):
-                raise ParseException(instring, loc, self.errmsg, self)
-        return loc, []
-
-class WordEnd(_PositionToken):
-    """
-    Matches if the current position is at the end of a Word, and
-    is not followed by any character in a given set of C{wordChars}
-    (default=C{printables}). To emulate the C{\b} behavior of regular expressions,
-    use C{WordEnd(alphanums)}. C{WordEnd} will also match at the end of
-    the string being parsed, or at the end of a line.
-    """
-    def __init__(self, wordChars = printables):
-        super(WordEnd,self).__init__()
-        self.wordChars = set(wordChars)
-        self.skipWhitespace = False
-        self.errmsg = "Not at the end of a word"
-
-    def parseImpl(self, instring, loc, doActions=True ):
-        instrlen = len(instring)
-        if instrlen>0 and loc<instrlen:
-            if (instring[loc] in self.wordChars or
-                instring[loc-1] not in self.wordChars):
-                raise ParseException(instring, loc, self.errmsg, self)
-        return loc, []
-
-
-class ParseExpression(ParserElement):
-    """
-    Abstract subclass of ParserElement, for combining and post-processing parsed tokens.
-    """
-    def __init__( self, exprs, savelist = False ):
-        super(ParseExpression,self).__init__(savelist)
-        if isinstance( exprs, _generatorType ):
-            exprs = list(exprs)
-
-        if isinstance( exprs, basestring ):
-            self.exprs = [ ParserElement._literalStringClass( exprs ) ]
-        elif isinstance( exprs, Iterable ):
-            exprs = list(exprs)
-            # if sequence of strings provided, wrap with Literal
-            if all(isinstance(expr, basestring) for expr in exprs):
-                exprs = map(ParserElement._literalStringClass, exprs)
-            self.exprs = list(exprs)
-        else:
-            try:
-                self.exprs = list( exprs )
-            except TypeError:
-                self.exprs = [ exprs ]
-        self.callPreparse = False
-
-    def __getitem__( self, i ):
-        return self.exprs[i]
-
-    def append( self, other ):
-        self.exprs.append( other )
-        self.strRepr = None
-        return self
-
-    def leaveWhitespace( self ):
-        """Extends C{leaveWhitespace} defined in base class, and also invokes C{leaveWhitespace} on
-           all contained expressions."""
-        self.skipWhitespace = False
-        self.exprs = [ e.copy() for e in self.exprs ]
-        for e in self.exprs:
-            e.leaveWhitespace()
-        return self
-
-    def ignore( self, other ):
-        if isinstance( other, Suppress ):
-            if other not in self.ignoreExprs:
-                super( ParseExpression, self).ignore( other )
-                for e in self.exprs:
-                    e.ignore( self.ignoreExprs[-1] )
-        else:
-            super( ParseExpression, self).ignore( other )
-            for e in self.exprs:
-                e.ignore( self.ignoreExprs[-1] )
-        return self
-
-    def __str__( self ):
-        try:
-            return super(ParseExpression,self).__str__()
-        except Exception:
-            pass
-
-        if self.strRepr is None:
-            self.strRepr = "%s:(%s)" % ( self.__class__.__name__, _ustr(self.exprs) )
-        return self.strRepr
-
-    def streamline( self ):
-        super(ParseExpression,self).streamline()
-
-        for e in self.exprs:
-            e.streamline()
-
-        # collapse nested And's of the form And( And( And( a,b), c), d) to And( a,b,c,d )
-        # but only if there are no parse actions or resultsNames on the nested And's
-        # (likewise for Or's and MatchFirst's)
-        if ( len(self.exprs) == 2 ):
-            other = self.exprs[0]
-            if ( isinstance( other, self.__class__ ) and
-                  not(other.parseAction) and
-                  other.resultsName is None and
-                  not other.debug ):
-                self.exprs = other.exprs[:] + [ self.exprs[1] ]
-                self.strRepr = None
-                self.mayReturnEmpty |= other.mayReturnEmpty
-                self.mayIndexError  |= other.mayIndexError
-
-            other = self.exprs[-1]
-            if ( isinstance( other, self.__class__ ) and
-                  not(other.parseAction) and
-                  other.resultsName is None and
-                  not other.debug ):
-                self.exprs = self.exprs[:-1] + other.exprs[:]
-                self.strRepr = None
-                self.mayReturnEmpty |= other.mayReturnEmpty
-                self.mayIndexError  |= other.mayIndexError
-
-        self.errmsg = "Expected " + _ustr(self)
-        
-        return self
-
-    def setResultsName( self, name, listAllMatches=False ):
-        ret = super(ParseExpression,self).setResultsName(name,listAllMatches)
-        return ret
-
-    def validate( self, validateTrace=[] ):
-        tmp = validateTrace[:]+[self]
-        for e in self.exprs:
-            e.validate(tmp)
-        self.checkRecursion( [] )
-        
-    def copy(self):
-        ret = super(ParseExpression,self).copy()
-        ret.exprs = [e.copy() for e in self.exprs]
-        return ret
-
-class And(ParseExpression):
-    """
-    Requires all given C{ParseExpression}s to be found in the given order.
-    Expressions may be separated by whitespace.
-    May be constructed using the C{'+'} operator.
-    May also be constructed using the C{'-'} operator, which will suppress backtracking.
-
-    Example::
-        integer = Word(nums)
-        name_expr = OneOrMore(Word(alphas))
-
-        expr = And([integer("id"),name_expr("name"),integer("age")])
-        # more easily written as:
-        expr = integer("id") + name_expr("name") + integer("age")
-    """
-
-    class _ErrorStop(Empty):
-        def __init__(self, *args, **kwargs):
-            super(And._ErrorStop,self).__init__(*args, **kwargs)
-            self.name = '-'
-            self.leaveWhitespace()
-
-    def __init__( self, exprs, savelist = True ):
-        super(And,self).__init__(exprs, savelist)
-        self.mayReturnEmpty = all(e.mayReturnEmpty for e in self.exprs)
-        self.setWhitespaceChars( self.exprs[0].whiteChars )
-        self.skipWhitespace = self.exprs[0].skipWhitespace
-        self.callPreparse = True
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        # pass False as last arg to _parse for first element, since we already
-        # pre-parsed the string as part of our And pre-parsing
-        loc, resultlist = self.exprs[0]._parse( instring, loc, doActions, callPreParse=False )
-        errorStop = False
-        for e in self.exprs[1:]:
-            if isinstance(e, And._ErrorStop):
-                errorStop = True
-                continue
-            if errorStop:
-                try:
-                    loc, exprtokens = e._parse( instring, loc, doActions )
-                except ParseSyntaxException:
-                    raise
-                except ParseBaseException as pe:
-                    pe.__traceback__ = None
-                    raise ParseSyntaxException._from_exception(pe)
-                except IndexError:
-                    raise ParseSyntaxException(instring, len(instring), self.errmsg, self)
-            else:
-                loc, exprtokens = e._parse( instring, loc, doActions )
-            if exprtokens or exprtokens.haskeys():
-                resultlist += exprtokens
-        return loc, resultlist
-
-    def __iadd__(self, other ):
-        if isinstance( other, basestring ):
-            other = ParserElement._literalStringClass( other )
-        return self.append( other ) #And( [ self, other ] )
-
-    def checkRecursion( self, parseElementList ):
-        subRecCheckList = parseElementList[:] + [ self ]
-        for e in self.exprs:
-            e.checkRecursion( subRecCheckList )
-            if not e.mayReturnEmpty:
-                break
-
-    def __str__( self ):
-        if hasattr(self,"name"):
-            return self.name
-
-        if self.strRepr is None:
-            self.strRepr = "{" + " ".join(_ustr(e) for e in self.exprs) + "}"
-
-        return self.strRepr
-
-
-class Or(ParseExpression):
-    """
-    Requires that at least one C{ParseExpression} is found.
-    If two expressions match, the expression that matches the longest string will be used.
-    May be constructed using the C{'^'} operator.
-
-    Example::
-        # construct Or using '^' operator
-        
-        number = Word(nums) ^ Combine(Word(nums) + '.' + Word(nums))
-        print(number.searchString("123 3.1416 789"))
-    prints::
-        [['123'], ['3.1416'], ['789']]
-    """
-    def __init__( self, exprs, savelist = False ):
-        super(Or,self).__init__(exprs, savelist)
-        if self.exprs:
-            self.mayReturnEmpty = any(e.mayReturnEmpty for e in self.exprs)
-        else:
-            self.mayReturnEmpty = True
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        maxExcLoc = -1
-        maxException = None
-        matches = []
-        for e in self.exprs:
-            try:
-                loc2 = e.tryParse( instring, loc )
-            except ParseException as err:
-                err.__traceback__ = None
-                if err.loc > maxExcLoc:
-                    maxException = err
-                    maxExcLoc = err.loc
-            except IndexError:
-                if len(instring) > maxExcLoc:
-                    maxException = ParseException(instring,len(instring),e.errmsg,self)
-                    maxExcLoc = len(instring)
-            else:
-                # save match among all matches, to retry longest to shortest
-                matches.append((loc2, e))
-
-        if matches:
-            matches.sort(key=lambda x: -x[0])
-            for _,e in matches:
-                try:
-                    return e._parse( instring, loc, doActions )
-                except ParseException as err:
-                    err.__traceback__ = None
-                    if err.loc > maxExcLoc:
-                        maxException = err
-                        maxExcLoc = err.loc
-
-        if maxException is not None:
-            maxException.msg = self.errmsg
-            raise maxException
-        else:
-            raise ParseException(instring, loc, "no defined alternatives to match", self)
-
-
-    def __ixor__(self, other ):
-        if isinstance( other, basestring ):
-            other = ParserElement._literalStringClass( other )
-        return self.append( other ) #Or( [ self, other ] )
-
-    def __str__( self ):
-        if hasattr(self,"name"):
-            return self.name
-
-        if self.strRepr is None:
-            self.strRepr = "{" + " ^ ".join(_ustr(e) for e in self.exprs) + "}"
-
-        return self.strRepr
-
-    def checkRecursion( self, parseElementList ):
-        subRecCheckList = parseElementList[:] + [ self ]
-        for e in self.exprs:
-            e.checkRecursion( subRecCheckList )
-
-
-class MatchFirst(ParseExpression):
-    """
-    Requires that at least one C{ParseExpression} is found.
-    If two expressions match, the first one listed is the one that will match.
-    May be constructed using the C{'|'} operator.
-
-    Example::
-        # construct MatchFirst using '|' operator
-        
-        # watch the order of expressions to match
-        number = Word(nums) | Combine(Word(nums) + '.' + Word(nums))
-        print(number.searchString("123 3.1416 789")) #  Fail! -> [['123'], ['3'], ['1416'], ['789']]
-
-        # put more selective expression first
-        number = Combine(Word(nums) + '.' + Word(nums)) | Word(nums)
-        print(number.searchString("123 3.1416 789")) #  Better -> [['123'], ['3.1416'], ['789']]
-    """
-    def __init__( self, exprs, savelist = False ):
-        super(MatchFirst,self).__init__(exprs, savelist)
-        if self.exprs:
-            self.mayReturnEmpty = any(e.mayReturnEmpty for e in self.exprs)
-        else:
-            self.mayReturnEmpty = True
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        maxExcLoc = -1
-        maxException = None
-        for e in self.exprs:
-            try:
-                ret = e._parse( instring, loc, doActions )
-                return ret
-            except ParseException as err:
-                if err.loc > maxExcLoc:
-                    maxException = err
-                    maxExcLoc = err.loc
-            except IndexError:
-                if len(instring) > maxExcLoc:
-                    maxException = ParseException(instring,len(instring),e.errmsg,self)
-                    maxExcLoc = len(instring)
-
-        # only got here if no expression matched, raise exception for match that made it the furthest
-        else:
-            if maxException is not None:
-                maxException.msg = self.errmsg
-                raise maxException
-            else:
-                raise ParseException(instring, loc, "no defined alternatives to match", self)
-
-    def __ior__(self, other ):
-        if isinstance( other, basestring ):
-            other = ParserElement._literalStringClass( other )
-        return self.append( other ) #MatchFirst( [ self, other ] )
-
-    def __str__( self ):
-        if hasattr(self,"name"):
-            return self.name
-
-        if self.strRepr is None:
-            self.strRepr = "{" + " | ".join(_ustr(e) for e in self.exprs) + "}"
-
-        return self.strRepr
-
-    def checkRecursion( self, parseElementList ):
-        subRecCheckList = parseElementList[:] + [ self ]
-        for e in self.exprs:
-            e.checkRecursion( subRecCheckList )
-
-
-class Each(ParseExpression):
-    """
-    Requires all given C{ParseExpression}s to be found, but in any order.
-    Expressions may be separated by whitespace.
-    May be constructed using the C{'&'} operator.
-
-    Example::
-        color = oneOf("RED ORANGE YELLOW GREEN BLUE PURPLE BLACK WHITE BROWN")
-        shape_type = oneOf("SQUARE CIRCLE TRIANGLE STAR HEXAGON OCTAGON")
-        integer = Word(nums)
-        shape_attr = "shape:" + shape_type("shape")
-        posn_attr = "posn:" + Group(integer("x") + ',' + integer("y"))("posn")
-        color_attr = "color:" + color("color")
-        size_attr = "size:" + integer("size")
-
-        # use Each (using operator '&') to accept attributes in any order 
-        # (shape and posn are required, color and size are optional)
-        shape_spec = shape_attr & posn_attr & Optional(color_attr) & Optional(size_attr)
-
-        shape_spec.runTests('''
-            shape: SQUARE color: BLACK posn: 100, 120
-            shape: CIRCLE size: 50 color: BLUE posn: 50,80
-            color:GREEN size:20 shape:TRIANGLE posn:20,40
-            '''
-            )
-    prints::
-        shape: SQUARE color: BLACK posn: 100, 120
-        ['shape:', 'SQUARE', 'color:', 'BLACK', 'posn:', ['100', ',', '120']]
-        - color: BLACK
-        - posn: ['100', ',', '120']
-          - x: 100
-          - y: 120
-        - shape: SQUARE
-
-
-        shape: CIRCLE size: 50 color: BLUE posn: 50,80
-        ['shape:', 'CIRCLE', 'size:', '50', 'color:', 'BLUE', 'posn:', ['50', ',', '80']]
-        - color: BLUE
-        - posn: ['50', ',', '80']
-          - x: 50
-          - y: 80
-        - shape: CIRCLE
-        - size: 50
-
-
-        color: GREEN size: 20 shape: TRIANGLE posn: 20,40
-        ['color:', 'GREEN', 'size:', '20', 'shape:', 'TRIANGLE', 'posn:', ['20', ',', '40']]
-        - color: GREEN
-        - posn: ['20', ',', '40']
-          - x: 20
-          - y: 40
-        - shape: TRIANGLE
-        - size: 20
-    """
-    def __init__( self, exprs, savelist = True ):
-        super(Each,self).__init__(exprs, savelist)
-        self.mayReturnEmpty = all(e.mayReturnEmpty for e in self.exprs)
-        self.skipWhitespace = True
-        self.initExprGroups = True
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        if self.initExprGroups:
-            self.opt1map = dict((id(e.expr),e) for e in self.exprs if isinstance(e,Optional))
-            opt1 = [ e.expr for e in self.exprs if isinstance(e,Optional) ]
-            opt2 = [ e for e in self.exprs if e.mayReturnEmpty and not isinstance(e,Optional)]
-            self.optionals = opt1 + opt2
-            self.multioptionals = [ e.expr for e in self.exprs if isinstance(e,ZeroOrMore) ]
-            self.multirequired = [ e.expr for e in self.exprs if isinstance(e,OneOrMore) ]
-            self.required = [ e for e in self.exprs if not isinstance(e,(Optional,ZeroOrMore,OneOrMore)) ]
-            self.required += self.multirequired
-            self.initExprGroups = False
-        tmpLoc = loc
-        tmpReqd = self.required[:]
-        tmpOpt  = self.optionals[:]
-        matchOrder = []
-
-        keepMatching = True
-        while keepMatching:
-            tmpExprs = tmpReqd + tmpOpt + self.multioptionals + self.multirequired
-            failed = []
-            for e in tmpExprs:
-                try:
-                    tmpLoc = e.tryParse( instring, tmpLoc )
-                except ParseException:
-                    failed.append(e)
-                else:
-                    matchOrder.append(self.opt1map.get(id(e),e))
-                    if e in tmpReqd:
-                        tmpReqd.remove(e)
-                    elif e in tmpOpt:
-                        tmpOpt.remove(e)
-            if len(failed) == len(tmpExprs):
-                keepMatching = False
-
-        if tmpReqd:
-            missing = ", ".join(_ustr(e) for e in tmpReqd)
-            raise ParseException(instring,loc,"Missing one or more required elements (%s)" % missing )
-
-        # add any unmatched Optionals, in case they have default values defined
-        matchOrder += [e for e in self.exprs if isinstance(e,Optional) and e.expr in tmpOpt]
-
-        resultlist = []
-        for e in matchOrder:
-            loc,results = e._parse(instring,loc,doActions)
-            resultlist.append(results)
-
-        finalResults = sum(resultlist, ParseResults([]))
-        return loc, finalResults
-
-    def __str__( self ):
-        if hasattr(self,"name"):
-            return self.name
-
-        if self.strRepr is None:
-            self.strRepr = "{" + " & ".join(_ustr(e) for e in self.exprs) + "}"
-
-        return self.strRepr
-
-    def checkRecursion( self, parseElementList ):
-        subRecCheckList = parseElementList[:] + [ self ]
-        for e in self.exprs:
-            e.checkRecursion( subRecCheckList )
-
-
-class ParseElementEnhance(ParserElement):
-    """
-    Abstract subclass of C{ParserElement}, for combining and post-processing parsed tokens.
-    """
-    def __init__( self, expr, savelist=False ):
-        super(ParseElementEnhance,self).__init__(savelist)
-        if isinstance( expr, basestring ):
-            if issubclass(ParserElement._literalStringClass, Token):
-                expr = ParserElement._literalStringClass(expr)
-            else:
-                expr = ParserElement._literalStringClass(Literal(expr))
-        self.expr = expr
-        self.strRepr = None
-        if expr is not None:
-            self.mayIndexError = expr.mayIndexError
-            self.mayReturnEmpty = expr.mayReturnEmpty
-            self.setWhitespaceChars( expr.whiteChars )
-            self.skipWhitespace = expr.skipWhitespace
-            self.saveAsList = expr.saveAsList
-            self.callPreparse = expr.callPreparse
-            self.ignoreExprs.extend(expr.ignoreExprs)
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        if self.expr is not None:
-            return self.expr._parse( instring, loc, doActions, callPreParse=False )
-        else:
-            raise ParseException("",loc,self.errmsg,self)
-
-    def leaveWhitespace( self ):
-        self.skipWhitespace = False
-        self.expr = self.expr.copy()
-        if self.expr is not None:
-            self.expr.leaveWhitespace()
-        return self
-
-    def ignore( self, other ):
-        if isinstance( other, Suppress ):
-            if other not in self.ignoreExprs:
-                super( ParseElementEnhance, self).ignore( other )
-                if self.expr is not None:
-                    self.expr.ignore( self.ignoreExprs[-1] )
-        else:
-            super( ParseElementEnhance, self).ignore( other )
-            if self.expr is not None:
-                self.expr.ignore( self.ignoreExprs[-1] )
-        return self
-
-    def streamline( self ):
-        super(ParseElementEnhance,self).streamline()
-        if self.expr is not None:
-            self.expr.streamline()
-        return self
-
-    def checkRecursion( self, parseElementList ):
-        if self in parseElementList:
-            raise RecursiveGrammarException( parseElementList+[self] )
-        subRecCheckList = parseElementList[:] + [ self ]
-        if self.expr is not None:
-            self.expr.checkRecursion( subRecCheckList )
-
-    def validate( self, validateTrace=[] ):
-        tmp = validateTrace[:]+[self]
-        if self.expr is not None:
-            self.expr.validate(tmp)
-        self.checkRecursion( [] )
-
-    def __str__( self ):
-        try:
-            return super(ParseElementEnhance,self).__str__()
-        except Exception:
-            pass
-
-        if self.strRepr is None and self.expr is not None:
-            self.strRepr = "%s:(%s)" % ( self.__class__.__name__, _ustr(self.expr) )
-        return self.strRepr
-
-
-class FollowedBy(ParseElementEnhance):
-    """
-    Lookahead matching of the given parse expression.  C{FollowedBy}
-    does I{not} advance the parsing position within the input string, it only
-    verifies that the specified parse expression matches at the current
-    position.  C{FollowedBy} always returns a null token list.
-
-    Example::
-        # use FollowedBy to match a label only if it is followed by a ':'
-        data_word = Word(alphas)
-        label = data_word + FollowedBy(':')
-        attr_expr = Group(label + Suppress(':') + OneOrMore(data_word, stopOn=label).setParseAction(' '.join))
-        
-        OneOrMore(attr_expr).parseString("shape: SQUARE color: BLACK posn: upper left").pprint()
-    prints::
-        [['shape', 'SQUARE'], ['color', 'BLACK'], ['posn', 'upper left']]
-    """
-    def __init__( self, expr ):
-        super(FollowedBy,self).__init__(expr)
-        self.mayReturnEmpty = True
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        self.expr.tryParse( instring, loc )
-        return loc, []
-
-
-class NotAny(ParseElementEnhance):
-    """
-    Lookahead to disallow matching with the given parse expression.  C{NotAny}
-    does I{not} advance the parsing position within the input string, it only
-    verifies that the specified parse expression does I{not} match at the current
-    position.  Also, C{NotAny} does I{not} skip over leading whitespace. C{NotAny}
-    always returns a null token list.  May be constructed using the '~' operator.
-
-    Example::
-        
-    """
-    def __init__( self, expr ):
-        super(NotAny,self).__init__(expr)
-        #~ self.leaveWhitespace()
-        self.skipWhitespace = False  # do NOT use self.leaveWhitespace(), don't want to propagate to exprs
-        self.mayReturnEmpty = True
-        self.errmsg = "Found unwanted token, "+_ustr(self.expr)
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        if self.expr.canParseNext(instring, loc):
-            raise ParseException(instring, loc, self.errmsg, self)
-        return loc, []
-
-    def __str__( self ):
-        if hasattr(self,"name"):
-            return self.name
-
-        if self.strRepr is None:
-            self.strRepr = "~{" + _ustr(self.expr) + "}"
-
-        return self.strRepr
-
-class _MultipleMatch(ParseElementEnhance):
-    def __init__( self, expr, stopOn=None):
-        super(_MultipleMatch, self).__init__(expr)
-        self.saveAsList = True
-        ender = stopOn
-        if isinstance(ender, basestring):
-            ender = ParserElement._literalStringClass(ender)
-        self.not_ender = ~ender if ender is not None else None
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        self_expr_parse = self.expr._parse
-        self_skip_ignorables = self._skipIgnorables
-        check_ender = self.not_ender is not None
-        if check_ender:
-            try_not_ender = self.not_ender.tryParse
-        
-        # must be at least one (but first see if we are the stopOn sentinel;
-        # if so, fail)
-        if check_ender:
-            try_not_ender(instring, loc)
-        loc, tokens = self_expr_parse( instring, loc, doActions, callPreParse=False )
-        try:
-            hasIgnoreExprs = (not not self.ignoreExprs)
-            while 1:
-                if check_ender:
-                    try_not_ender(instring, loc)
-                if hasIgnoreExprs:
-                    preloc = self_skip_ignorables( instring, loc )
-                else:
-                    preloc = loc
-                loc, tmptokens = self_expr_parse( instring, preloc, doActions )
-                if tmptokens or tmptokens.haskeys():
-                    tokens += tmptokens
-        except (ParseException,IndexError):
-            pass
-
-        return loc, tokens
-        
-class OneOrMore(_MultipleMatch):
-    """
-    Repetition of one or more of the given expression.
-    
-    Parameters:
-     - expr - expression that must match one or more times
-     - stopOn - (default=C{None}) - expression for a terminating sentinel
-          (only required if the sentinel would ordinarily match the repetition 
-          expression)          
-
-    Example::
-        data_word = Word(alphas)
-        label = data_word + FollowedBy(':')
-        attr_expr = Group(label + Suppress(':') + OneOrMore(data_word).setParseAction(' '.join))
-
-        text = "shape: SQUARE posn: upper left color: BLACK"
-        OneOrMore(attr_expr).parseString(text).pprint()  # Fail! read 'color' as data instead of next label -> [['shape', 'SQUARE color']]
-
-        # use stopOn attribute for OneOrMore to avoid reading label string as part of the data
-        attr_expr = Group(label + Suppress(':') + OneOrMore(data_word, stopOn=label).setParseAction(' '.join))
-        OneOrMore(attr_expr).parseString(text).pprint() # Better -> [['shape', 'SQUARE'], ['posn', 'upper left'], ['color', 'BLACK']]
-        
-        # could also be written as
-        (attr_expr * (1,)).parseString(text).pprint()
-    """
-
-    def __str__( self ):
-        if hasattr(self,"name"):
-            return self.name
-
-        if self.strRepr is None:
-            self.strRepr = "{" + _ustr(self.expr) + "}..."
-
-        return self.strRepr
-
-class ZeroOrMore(_MultipleMatch):
-    """
-    Optional repetition of zero or more of the given expression.
-    
-    Parameters:
-     - expr - expression that must match zero or more times
-     - stopOn - (default=C{None}) - expression for a terminating sentinel
-          (only required if the sentinel would ordinarily match the repetition 
-          expression)          
-
-    Example: similar to L{OneOrMore}
-    """
-    def __init__( self, expr, stopOn=None):
-        super(ZeroOrMore,self).__init__(expr, stopOn=stopOn)
-        self.mayReturnEmpty = True
-        
-    def parseImpl( self, instring, loc, doActions=True ):
-        try:
-            return super(ZeroOrMore, self).parseImpl(instring, loc, doActions)
-        except (ParseException,IndexError):
-            return loc, []
-
-    def __str__( self ):
-        if hasattr(self,"name"):
-            return self.name
-
-        if self.strRepr is None:
-            self.strRepr = "[" + _ustr(self.expr) + "]..."
-
-        return self.strRepr
-
-class _NullToken(object):
-    def __bool__(self):
-        return False
-    __nonzero__ = __bool__
-    def __str__(self):
-        return ""
-
-_optionalNotMatched = _NullToken()
-class Optional(ParseElementEnhance):
-    """
-    Optional matching of the given expression.
-
-    Parameters:
-     - expr - expression that must match zero or more times
-     - default (optional) - value to be returned if the optional expression is not found.
-
-    Example::
-        # US postal code can be a 5-digit zip, plus optional 4-digit qualifier
-        zip = Combine(Word(nums, exact=5) + Optional('-' + Word(nums, exact=4)))
-        zip.runTests('''
-            # traditional ZIP code
-            12345
-            
-            # ZIP+4 form
-            12101-0001
-            
-            # invalid ZIP
-            98765-
-            ''')
-    prints::
-        # traditional ZIP code
-        12345
-        ['12345']
-
-        # ZIP+4 form
-        12101-0001
-        ['12101-0001']
-
-        # invalid ZIP
-        98765-
-             ^
-        FAIL: Expected end of text (at char 5), (line:1, col:6)
-    """
-    def __init__( self, expr, default=_optionalNotMatched ):
-        super(Optional,self).__init__( expr, savelist=False )
-        self.saveAsList = self.expr.saveAsList
-        self.defaultValue = default
-        self.mayReturnEmpty = True
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        try:
-            loc, tokens = self.expr._parse( instring, loc, doActions, callPreParse=False )
-        except (ParseException,IndexError):
-            if self.defaultValue is not _optionalNotMatched:
-                if self.expr.resultsName:
-                    tokens = ParseResults([ self.defaultValue ])
-                    tokens[self.expr.resultsName] = self.defaultValue
-                else:
-                    tokens = [ self.defaultValue ]
-            else:
-                tokens = []
-        return loc, tokens
-
-    def __str__( self ):
-        if hasattr(self,"name"):
-            return self.name
-
-        if self.strRepr is None:
-            self.strRepr = "[" + _ustr(self.expr) + "]"
-
-        return self.strRepr
-
-class SkipTo(ParseElementEnhance):
-    """
-    Token for skipping over all undefined text until the matched expression is found.
-
-    Parameters:
-     - expr - target expression marking the end of the data to be skipped
-     - include - (default=C{False}) if True, the target expression is also parsed 
-          (the skipped text and target expression are returned as a 2-element list).
-     - ignore - (default=C{None}) used to define grammars (typically quoted strings and 
-          comments) that might contain false matches to the target expression
-     - failOn - (default=C{None}) define expressions that are not allowed to be 
-          included in the skipped test; if found before the target expression is found, 
-          the SkipTo is not a match
-
-    Example::
-        report = '''
-            Outstanding Issues Report - 1 Jan 2000
-
-               # | Severity | Description                               |  Days Open
-            -----+----------+-------------------------------------------+-----------
-             101 | Critical | Intermittent system crash                 |          6
-              94 | Cosmetic | Spelling error on Login ('log|n')         |         14
-              79 | Minor    | System slow when running too many reports |         47
-            '''
-        integer = Word(nums)
-        SEP = Suppress('|')
-        # use SkipTo to simply match everything up until the next SEP
-        # - ignore quoted strings, so that a '|' character inside a quoted string does not match
-        # - parse action will call token.strip() for each matched token, i.e., the description body
-        string_data = SkipTo(SEP, ignore=quotedString)
-        string_data.setParseAction(tokenMap(str.strip))
-        ticket_expr = (integer("issue_num") + SEP 
-                      + string_data("sev") + SEP 
-                      + string_data("desc") + SEP 
-                      + integer("days_open"))
-        
-        for tkt in ticket_expr.searchString(report):
-            print tkt.dump()
-    prints::
-        ['101', 'Critical', 'Intermittent system crash', '6']
-        - days_open: 6
-        - desc: Intermittent system crash
-        - issue_num: 101
-        - sev: Critical
-        ['94', 'Cosmetic', "Spelling error on Login ('log|n')", '14']
-        - days_open: 14
-        - desc: Spelling error on Login ('log|n')
-        - issue_num: 94
-        - sev: Cosmetic
-        ['79', 'Minor', 'System slow when running too many reports', '47']
-        - days_open: 47
-        - desc: System slow when running too many reports
-        - issue_num: 79
-        - sev: Minor
-    """
-    def __init__( self, other, include=False, ignore=None, failOn=None ):
-        super( SkipTo, self ).__init__( other )
-        self.ignoreExpr = ignore
-        self.mayReturnEmpty = True
-        self.mayIndexError = False
-        self.includeMatch = include
-        self.asList = False
-        if isinstance(failOn, basestring):
-            self.failOn = ParserElement._literalStringClass(failOn)
-        else:
-            self.failOn = failOn
-        self.errmsg = "No match found for "+_ustr(self.expr)
-
-    def parseImpl( self, instring, loc, doActions=True ):
-        startloc = loc
-        instrlen = len(instring)
-        expr = self.expr
-        expr_parse = self.expr._parse
-        self_failOn_canParseNext = self.failOn.canParseNext if self.failOn is not None else None
-        self_ignoreExpr_tryParse = self.ignoreExpr.tryParse if self.ignoreExpr is not None else None
-        
-        tmploc = loc
-        while tmploc <= instrlen:
-            if self_failOn_canParseNext is not None:
-                # break if failOn expression matches
-                if self_failOn_canParseNext(instring, tmploc):
-                    break
-                    
-            if self_ignoreExpr_tryParse is not None:
-                # advance past ignore expressions
-                while 1:
-                    try:
-                        tmploc = self_ignoreExpr_tryParse(instring, tmploc)
-                    except ParseBaseException:
-                        break
-            
-            try:
-                expr_parse(instring, tmploc, doActions=False, callPreParse=False)
-            except (ParseException, IndexError):
-                # no match, advance loc in string
-                tmploc += 1
-            else:
-                # matched skipto expr, done
-                break
-
-        else:
-            # ran off the end of the input string without matching skipto expr, fail
-            raise ParseException(instring, loc, self.errmsg, self)
-
-        # build up return values
-        loc = tmploc
-        skiptext = instring[startloc:loc]
-        skipresult = ParseResults(skiptext)
-        
-        if self.includeMatch:
-            loc, mat = expr_parse(instring,loc,doActions,callPreParse=False)
-            skipresult += mat
-
-        return loc, skipresult
-
-class Forward(ParseElementEnhance):
-    """
-    Forward declaration of an expression to be defined later -
-    used for recursive grammars, such as algebraic infix notation.
-    When the expression is known, it is assigned to the C{Forward} variable using the '<<' operator.
-
-    Note: take care when assigning to C{Forward} not to overlook precedence of operators.
-    Specifically, '|' has a lower precedence than '<<', so that::
-        fwdExpr << a | b | c
-    will actually be evaluated as::
-        (fwdExpr << a) | b | c
-    thereby leaving b and c out as parseable alternatives.  It is recommended that you
-    explicitly group the values inserted into the C{Forward}::
-        fwdExpr << (a | b | c)
-    Converting to use the '<<=' operator instead will avoid this problem.
-
-    See L{ParseResults.pprint} for an example of a recursive parser created using
-    C{Forward}.
-    """
-    def __init__( self, other=None ):
-        super(Forward,self).__init__( other, savelist=False )
-
-    def __lshift__( self, other ):
-        if isinstance( other, basestring ):
-            other = ParserElement._literalStringClass(other)
-        self.expr = other
-        self.strRepr = None
-        self.mayIndexError = self.expr.mayIndexError
-        self.mayReturnEmpty = self.expr.mayReturnEmpty
-        self.setWhitespaceChars( self.expr.whiteChars )
-        self.skipWhitespace = self.expr.skipWhitespace
-        self.saveAsList = self.expr.saveAsList
-        self.ignoreExprs.extend(self.expr.ignoreExprs)
-        return self
-        
-    def __ilshift__(self, other):
-        return self << other
-    
-    def leaveWhitespace( self ):
-        self.skipWhitespace = False
-        return self
-
-    def streamline( self ):
-        if not self.streamlined:
-            self.streamlined = True
-            if self.expr is not None:
-                self.expr.streamline()
-        return self
-
-    def validate( self, validateTrace=[] ):
-        if self not in validateTrace:
-            tmp = validateTrace[:]+[self]
-            if self.expr is not None:
-                self.expr.validate(tmp)
-        self.checkRecursion([])
-
-    def __str__( self ):
-        if hasattr(self,"name"):
-            return self.name
-        return self.__class__.__name__ + ": ..."
-
-        # stubbed out for now - creates awful memory and perf issues
-        self._revertClass = self.__class__
-        self.__class__ = _ForwardNoRecurse
-        try:
-            if self.expr is not None:
-                retString = _ustr(self.expr)
-            else:
-                retString = "None"
-        finally:
-            self.__class__ = self._revertClass
-        return self.__class__.__name__ + ": " + retString
-
-    def copy(self):
-        if self.expr is not None:
-            return super(Forward,self).copy()
-        else:
-            ret = Forward()
-            ret <<= self
-            return ret
-
-class _ForwardNoRecurse(Forward):
-    def __str__( self ):
-        return "..."
-
-class TokenConverter(ParseElementEnhance):
-    """
-    Abstract subclass of C{ParseExpression}, for converting parsed results.
-    """
-    def __init__( self, expr, savelist=False ):
-        super(TokenConverter,self).__init__( expr )#, savelist )
-        self.saveAsList = False
-
-class Combine(TokenConverter):
-    """
-    Converter to concatenate all matching tokens to a single string.
-    By default, the matching patterns must also be contiguous in the input string;
-    this can be disabled by specifying C{'adjacent=False'} in the constructor.
-
-    Example::
-        real = Word(nums) + '.' + Word(nums)
-        print(real.parseString('3.1416')) # -> ['3', '.', '1416']
-        # will also erroneously match the following
-        print(real.parseString('3. 1416')) # -> ['3', '.', '1416']
-
-        real = Combine(Word(nums) + '.' + Word(nums))
-        print(real.parseString('3.1416')) # -> ['3.1416']
-        # no match when there are internal spaces
-        print(real.parseString('3. 1416')) # -> Exception: Expected W:(0123...)
-    """
-    def __init__( self, expr, joinString="", adjacent=True ):
-        super(Combine,self).__init__( expr )
-        # suppress whitespace-stripping in contained parse expressions, but re-enable it on the Combine itself
-        if adjacent:
-            self.leaveWhitespace()
-        self.adjacent = adjacent
-        self.skipWhitespace = True
-        self.joinString = joinString
-        self.callPreparse = True
-
-    def ignore( self, other ):
-        if self.adjacent:
-            ParserElement.ignore(self, other)
-        else:
-            super( Combine, self).ignore( other )
-        return self
-
-    def postParse( self, instring, loc, tokenlist ):
-        retToks = tokenlist.copy()
-        del retToks[:]
-        retToks += ParseResults([ "".join(tokenlist._asStringList(self.joinString)) ], modal=self.modalResults)
-
-        if self.resultsName and retToks.haskeys():
-            return [ retToks ]
-        else:
-            return retToks
-
-class Group(TokenConverter):
-    """
-    Converter to return the matched tokens as a list - useful for returning tokens of C{L{ZeroOrMore}} and C{L{OneOrMore}} expressions.
-
-    Example::
-        ident = Word(alphas)
-        num = Word(nums)
-        term = ident | num
-        func = ident + Optional(delimitedList(term))
-        print(func.parseString("fn a,b,100"))  # -> ['fn', 'a', 'b', '100']
-
-        func = ident + Group(Optional(delimitedList(term)))
-        print(func.parseString("fn a,b,100"))  # -> ['fn', ['a', 'b', '100']]
-    """
-    def __init__( self, expr ):
-        super(Group,self).__init__( expr )
-        self.saveAsList = True
-
-    def postParse( self, instring, loc, tokenlist ):
-        return [ tokenlist ]
-
-class Dict(TokenConverter):
-    """
-    Converter to return a repetitive expression as a list, but also as a dictionary.
-    Each element can also be referenced using the first token in the expression as its key.
-    Useful for tabular report scraping when the first column can be used as a item key.
-
-    Example::
-        data_word = Word(alphas)
-        label = data_word + FollowedBy(':')
-        attr_expr = Group(label + Suppress(':') + OneOrMore(data_word).setParseAction(' '.join))
-
-        text = "shape: SQUARE posn: upper left color: light blue texture: burlap"
-        attr_expr = (label + Suppress(':') + OneOrMore(data_word, stopOn=label).setParseAction(' '.join))
-        
-        # print attributes as plain groups
-        print(OneOrMore(attr_expr).parseString(text).dump())
-        
-        # instead of OneOrMore(expr), parse using Dict(OneOrMore(Group(expr))) - Dict will auto-assign names
-        result = Dict(OneOrMore(Group(attr_expr))).parseString(text)
-        print(result.dump())
-        
-        # access named fields as dict entries, or output as dict
-        print(result['shape'])        
-        print(result.asDict())
-    prints::
-        ['shape', 'SQUARE', 'posn', 'upper left', 'color', 'light blue', 'texture', 'burlap']
-
-        [['shape', 'SQUARE'], ['posn', 'upper left'], ['color', 'light blue'], ['texture', 'burlap']]
-        - color: light blue
-        - posn: upper left
-        - shape: SQUARE
-        - texture: burlap
-        SQUARE
-        {'color': 'light blue', 'posn': 'upper left', 'texture': 'burlap', 'shape': 'SQUARE'}
-    See more examples at L{ParseResults} of accessing fields by results name.
-    """
-    def __init__( self, expr ):
-        super(Dict,self).__init__( expr )
-        self.saveAsList = True
-
-    def postParse( self, instring, loc, tokenlist ):
-        for i,tok in enumerate(tokenlist):
-            if len(tok) == 0:
-                continue
-            ikey = tok[0]
-            if isinstance(ikey,int):
-                ikey = _ustr(tok[0]).strip()
-            if len(tok)==1:
-                tokenlist[ikey] = _ParseResultsWithOffset("",i)
-            elif len(tok)==2 and not isinstance(tok[1],ParseResults):
-                tokenlist[ikey] = _ParseResultsWithOffset(tok[1],i)
-            else:
-                dictvalue = tok.copy() #ParseResults(i)
-                del dictvalue[0]
-                if len(dictvalue)!= 1 or (isinstance(dictvalue,ParseResults) and dictvalue.haskeys()):
-                    tokenlist[ikey] = _ParseResultsWithOffset(dictvalue,i)
-                else:
-                    tokenlist[ikey] = _ParseResultsWithOffset(dictvalue[0],i)
-
-        if self.resultsName:
-            return [ tokenlist ]
-        else:
-            return tokenlist
-
-
-class Suppress(TokenConverter):
-    """
-    Converter for ignoring the results of a parsed expression.
-
-    Example::
-        source = "a, b, c,d"
-        wd = Word(alphas)
-        wd_list1 = wd + ZeroOrMore(',' + wd)
-        print(wd_list1.parseString(source))
-
-        # often, delimiters that are useful during parsing are just in the
-        # way afterward - use Suppress to keep them out of the parsed output
-        wd_list2 = wd + ZeroOrMore(Suppress(',') + wd)
-        print(wd_list2.parseString(source))
-    prints::
-        ['a', ',', 'b', ',', 'c', ',', 'd']
-        ['a', 'b', 'c', 'd']
-    (See also L{delimitedList}.)
-    """
-    def postParse( self, instring, loc, tokenlist ):
-        return []
-
-    def suppress( self ):
-        return self
-
-
-class OnlyOnce(object):
-    """
-    Wrapper for parse actions, to ensure they are only called once.
-    """
-    def __init__(self, methodCall):
-        self.callable = _trim_arity(methodCall)
-        self.called = False
-    def __call__(self,s,l,t):
-        if not self.called:
-            results = self.callable(s,l,t)
-            self.called = True
-            return results
-        raise ParseException(s,l,"")
-    def reset(self):
-        self.called = False
-
-def traceParseAction(f):
-    """
-    Decorator for debugging parse actions. 
-    
-    When the parse action is called, this decorator will print C{">> entering I{method-name}(line:I{current_source_line}, I{parse_location}, I{matched_tokens})".}
-    When the parse action completes, the decorator will print C{"<<"} followed by the returned value, or any exception that the parse action raised.
-
-    Example::
-        wd = Word(alphas)
-
-        @traceParseAction
-        def remove_duplicate_chars(tokens):
-            return ''.join(sorted(set(''.join(tokens))))
-
-        wds = OneOrMore(wd).setParseAction(remove_duplicate_chars)
-        print(wds.parseString("slkdjs sld sldd sdlf sdljf"))
-    prints::
-        >>entering remove_duplicate_chars(line: 'slkdjs sld sldd sdlf sdljf', 0, (['slkdjs', 'sld', 'sldd', 'sdlf', 'sdljf'], {}))
-        <<leaving remove_duplicate_chars (ret: 'dfjkls')
-        ['dfjkls']
-    """
-    f = _trim_arity(f)
-    def z(*paArgs):
-        thisFunc = f.__name__
-        s,l,t = paArgs[-3:]
-        if len(paArgs)>3:
-            thisFunc = paArgs[0].__class__.__name__ + '.' + thisFunc
-        sys.stderr.write( ">>entering %s(line: '%s', %d, %r)\n" % (thisFunc,line(l,s),l,t) )
-        try:
-            ret = f(*paArgs)
-        except Exception as exc:
-            sys.stderr.write( "<<leaving %s (exception: %s)\n" % (thisFunc,exc) )
-            raise
-        sys.stderr.write( "<<leaving %s (ret: %r)\n" % (thisFunc,ret) )
-        return ret
-    try:
-        z.__name__ = f.__name__
-    except AttributeError:
-        pass
-    return z
-
-#
-# global helpers
-#
-def delimitedList( expr, delim=",", combine=False ):
-    """
-    Helper to define a delimited list of expressions - the delimiter defaults to ','.
-    By default, the list elements and delimiters can have intervening whitespace, and
-    comments, but this can be overridden by passing C{combine=True} in the constructor.
-    If C{combine} is set to C{True}, the matching tokens are returned as a single token
-    string, with the delimiters included; otherwise, the matching tokens are returned
-    as a list of tokens, with the delimiters suppressed.
-
-    Example::
-        delimitedList(Word(alphas)).parseString("aa,bb,cc") # -> ['aa', 'bb', 'cc']
-        delimitedList(Word(hexnums), delim=':', combine=True).parseString("AA:BB:CC:DD:EE") # -> ['AA:BB:CC:DD:EE']
-    """
-    dlName = _ustr(expr)+" ["+_ustr(delim)+" "+_ustr(expr)+"]..."
-    if combine:
-        return Combine( expr + ZeroOrMore( delim + expr ) ).setName(dlName)
-    else:
-        return ( expr + ZeroOrMore( Suppress( delim ) + expr ) ).setName(dlName)
-
-def countedArray( expr, intExpr=None ):
-    """
-    Helper to define a counted list of expressions.
-    This helper defines a pattern of the form::
-        integer expr expr expr...
-    where the leading integer tells how many expr expressions follow.
-    The matched tokens returns the array of expr tokens as a list - the leading count token is suppressed.
-    
-    If C{intExpr} is specified, it should be a pyparsing expression that produces an integer value.
-
-    Example::
-        countedArray(Word(alphas)).parseString('2 ab cd ef')  # -> ['ab', 'cd']
-
-        # in this parser, the leading integer value is given in binary,
-        # '10' indicating that 2 values are in the array
-        binaryConstant = Word('01').setParseAction(lambda t: int(t[0], 2))
-        countedArray(Word(alphas), intExpr=binaryConstant).parseString('10 ab cd ef')  # -> ['ab', 'cd']
-    """
-    arrayExpr = Forward()
-    def countFieldParseAction(s,l,t):
-        n = t[0]
-        arrayExpr << (n and Group(And([expr]*n)) or Group(empty))
-        return []
-    if intExpr is None:
-        intExpr = Word(nums).setParseAction(lambda t:int(t[0]))
-    else:
-        intExpr = intExpr.copy()
-    intExpr.setName("arrayLen")
-    intExpr.addParseAction(countFieldParseAction, callDuringTry=True)
-    return ( intExpr + arrayExpr ).setName('(len) ' + _ustr(expr) + '...')
-
-def _flatten(L):
-    ret = []
-    for i in L:
-        if isinstance(i,list):
-            ret.extend(_flatten(i))
-        else:
-            ret.append(i)
-    return ret
-
-def matchPreviousLiteral(expr):
-    """
-    Helper to define an expression that is indirectly defined from
-    the tokens matched in a previous expression, that is, it looks
-    for a 'repeat' of a previous expression.  For example::
-        first = Word(nums)
-        second = matchPreviousLiteral(first)
-        matchExpr = first + ":" + second
-    will match C{"1:1"}, but not C{"1:2"}.  Because this matches a
-    previous literal, will also match the leading C{"1:1"} in C{"1:10"}.
-    If this is not desired, use C{matchPreviousExpr}.
-    Do I{not} use with packrat parsing enabled.
-    """
-    rep = Forward()
-    def copyTokenToRepeater(s,l,t):
-        if t:
-            if len(t) == 1:
-                rep << t[0]
-            else:
-                # flatten t tokens
-                tflat = _flatten(t.asList())
-                rep << And(Literal(tt) for tt in tflat)
-        else:
-            rep << Empty()
-    expr.addParseAction(copyTokenToRepeater, callDuringTry=True)
-    rep.setName('(prev) ' + _ustr(expr))
-    return rep
-
-def matchPreviousExpr(expr):
-    """
-    Helper to define an expression that is indirectly defined from
-    the tokens matched in a previous expression, that is, it looks
-    for a 'repeat' of a previous expression.  For example::
-        first = Word(nums)
-        second = matchPreviousExpr(first)
-        matchExpr = first + ":" + second
-    will match C{"1:1"}, but not C{"1:2"}.  Because this matches by
-    expressions, will I{not} match the leading C{"1:1"} in C{"1:10"};
-    the expressions are evaluated first, and then compared, so
-    C{"1"} is compared with C{"10"}.
-    Do I{not} use with packrat parsing enabled.
-    """
-    rep = Forward()
-    e2 = expr.copy()
-    rep <<= e2
-    def copyTokenToRepeater(s,l,t):
-        matchTokens = _flatten(t.asList())
-        def mustMatchTheseTokens(s,l,t):
-            theseTokens = _flatten(t.asList())
-            if  theseTokens != matchTokens:
-                raise ParseException("",0,"")
-        rep.setParseAction( mustMatchTheseTokens, callDuringTry=True )
-    expr.addParseAction(copyTokenToRepeater, callDuringTry=True)
-    rep.setName('(prev) ' + _ustr(expr))
-    return rep
-
-def _escapeRegexRangeChars(s):
-    #~  escape these chars: ^-]
-    for c in r"\^-]":
-        s = s.replace(c,_bslash+c)
-    s = s.replace("\n",r"\n")
-    s = s.replace("\t",r"\t")
-    return _ustr(s)
-
-def oneOf( strs, caseless=False, useRegex=True ):
-    """
-    Helper to quickly define a set of alternative Literals, and makes sure to do
-    longest-first testing when there is a conflict, regardless of the input order,
-    but returns a C{L{MatchFirst}} for best performance.
-
-    Parameters:
-     - strs - a string of space-delimited literals, or a collection of string literals
-     - caseless - (default=C{False}) - treat all literals as caseless
-     - useRegex - (default=C{True}) - as an optimization, will generate a Regex
-          object; otherwise, will generate a C{MatchFirst} object (if C{caseless=True}, or
-          if creating a C{Regex} raises an exception)
-
-    Example::
-        comp_oper = oneOf("< = > <= >= !=")
-        var = Word(alphas)
-        number = Word(nums)
-        term = var | number
-        comparison_expr = term + comp_oper + term
-        print(comparison_expr.searchString("B = 12  AA=23 B<=AA AA>12"))
-    prints::
-        [['B', '=', '12'], ['AA', '=', '23'], ['B', '<=', 'AA'], ['AA', '>', '12']]
-    """
-    if caseless:
-        isequal = ( lambda a,b: a.upper() == b.upper() )
-        masks = ( lambda a,b: b.upper().startswith(a.upper()) )
-        parseElementClass = CaselessLiteral
-    else:
-        isequal = ( lambda a,b: a == b )
-        masks = ( lambda a,b: b.startswith(a) )
-        parseElementClass = Literal
-
-    symbols = []
-    if isinstance(strs,basestring):
-        symbols = strs.split()
-    elif isinstance(strs, Iterable):
-        symbols = list(strs)
-    else:
-        warnings.warn("Invalid argument to oneOf, expected string or iterable",
-                SyntaxWarning, stacklevel=2)
-    if not symbols:
-        return NoMatch()
-
-    i = 0
-    while i < len(symbols)-1:
-        cur = symbols[i]
-        for j,other in enumerate(symbols[i+1:]):
-            if ( isequal(other, cur) ):
-                del symbols[i+j+1]
-                break
-            elif ( masks(cur, other) ):
-                del symbols[i+j+1]
-                symbols.insert(i,other)
-                cur = other
-                break
-        else:
-            i += 1
-
-    if not caseless and useRegex:
-        #~ print (strs,"->", "|".join( [ _escapeRegexChars(sym) for sym in symbols] ))
-        try:
-            if len(symbols)==len("".join(symbols)):
-                return Regex( "[%s]" % "".join(_escapeRegexRangeChars(sym) for sym in symbols) ).setName(' | '.join(symbols))
-            else:
-                return Regex( "|".join(re.escape(sym) for sym in symbols) ).setName(' | '.join(symbols))
-        except Exception:
-            warnings.warn("Exception creating Regex for oneOf, building MatchFirst",
-                    SyntaxWarning, stacklevel=2)
-
-
-    # last resort, just use MatchFirst
-    return MatchFirst(parseElementClass(sym) for sym in symbols).setName(' | '.join(symbols))
-
-def dictOf( key, value ):
-    """
-    Helper to easily and clearly define a dictionary by specifying the respective patterns
-    for the key and value.  Takes care of defining the C{L{Dict}}, C{L{ZeroOrMore}}, and C{L{Group}} tokens
-    in the proper order.  The key pattern can include delimiting markers or punctuation,
-    as long as they are suppressed, thereby leaving the significant key text.  The value
-    pattern can include named results, so that the C{Dict} results can include named token
-    fields.
-
-    Example::
-        text = "shape: SQUARE posn: upper left color: light blue texture: burlap"
-        attr_expr = (label + Suppress(':') + OneOrMore(data_word, stopOn=label).setParseAction(' '.join))
-        print(OneOrMore(attr_expr).parseString(text).dump())
-        
-        attr_label = label
-        attr_value = Suppress(':') + OneOrMore(data_word, stopOn=label).setParseAction(' '.join)
-
-        # similar to Dict, but simpler call format
-        result = dictOf(attr_label, attr_value).parseString(text)
-        print(result.dump())
-        print(result['shape'])
-        print(result.shape)  # object attribute access works too
-        print(result.asDict())
-    prints::
-        [['shape', 'SQUARE'], ['posn', 'upper left'], ['color', 'light blue'], ['texture', 'burlap']]
-        - color: light blue
-        - posn: upper left
-        - shape: SQUARE
-        - texture: burlap
-        SQUARE
-        SQUARE
-        {'color': 'light blue', 'shape': 'SQUARE', 'posn': 'upper left', 'texture': 'burlap'}
-    """
-    return Dict( ZeroOrMore( Group ( key + value ) ) )
-
-def originalTextFor(expr, asString=True):
-    """
-    Helper to return the original, untokenized text for a given expression.  Useful to
-    restore the parsed fields of an HTML start tag into the raw tag text itself, or to
-    revert separate tokens with intervening whitespace back to the original matching
-    input text. By default, returns astring containing the original parsed text.  
-       
-    If the optional C{asString} argument is passed as C{False}, then the return value is a 
-    C{L{ParseResults}} containing any results names that were originally matched, and a 
-    single token containing the original matched text from the input string.  So if 
-    the expression passed to C{L{originalTextFor}} contains expressions with defined
-    results names, you must set C{asString} to C{False} if you want to preserve those
-    results name values.
-
-    Example::
-        src = "this is test <b> bold <i>text</i> </b> normal text "
-        for tag in ("b","i"):
-            opener,closer = makeHTMLTags(tag)
-            patt = originalTextFor(opener + SkipTo(closer) + closer)
-            print(patt.searchString(src)[0])
-    prints::
-        ['<b> bold <i>text</i> </b>']
-        ['<i>text</i>']
-    """
-    locMarker = Empty().setParseAction(lambda s,loc,t: loc)
-    endlocMarker = locMarker.copy()
-    endlocMarker.callPreparse = False
-    matchExpr = locMarker("_original_start") + expr + endlocMarker("_original_end")
-    if asString:
-        extractText = lambda s,l,t: s[t._original_start:t._original_end]
-    else:
-        def extractText(s,l,t):
-            t[:] = [s[t.pop('_original_start'):t.pop('_original_end')]]
-    matchExpr.setParseAction(extractText)
-    matchExpr.ignoreExprs = expr.ignoreExprs
-    return matchExpr
-
-def ungroup(expr): 
-    """
-    Helper to undo pyparsing's default grouping of And expressions, even
-    if all but one are non-empty.
-    """
-    return TokenConverter(expr).setParseAction(lambda t:t[0])
-
-def locatedExpr(expr):
-    """
-    Helper to decorate a returned token with its starting and ending locations in the input string.
-    This helper adds the following results names:
-     - locn_start = location where matched expression begins
-     - locn_end = location where matched expression ends
-     - value = the actual parsed results
-
-    Be careful if the input text contains C{<TAB>} characters, you may want to call
-    C{L{ParserElement.parseWithTabs}}
-
-    Example::
-        wd = Word(alphas)
-        for match in locatedExpr(wd).searchString("ljsdf123lksdjjf123lkkjj1222"):
-            print(match)
-    prints::
-        [[0, 'ljsdf', 5]]
-        [[8, 'lksdjjf', 15]]
-        [[18, 'lkkjj', 23]]
-    """
-    locator = Empty().setParseAction(lambda s,l,t: l)
-    return Group(locator("locn_start") + expr("value") + locator.copy().leaveWhitespace()("locn_end"))
-
-
-# convenience constants for positional expressions
-empty       = Empty().setName("empty")
-lineStart   = LineStart().setName("lineStart")
-lineEnd     = LineEnd().setName("lineEnd")
-stringStart = StringStart().setName("stringStart")
-stringEnd   = StringEnd().setName("stringEnd")
-
-_escapedPunc = Word( _bslash, r"\[]-*.$+^?()~ ", exact=2 ).setParseAction(lambda s,l,t:t[0][1])
-_escapedHexChar = Regex(r"\\0?[xX][0-9a-fA-F]+").setParseAction(lambda s,l,t:unichr(int(t[0].lstrip(r'\0x'),16)))
-_escapedOctChar = Regex(r"\\0[0-7]+").setParseAction(lambda s,l,t:unichr(int(t[0][1:],8)))
-_singleChar = _escapedPunc | _escapedHexChar | _escapedOctChar | CharsNotIn(r'\]', exact=1)
-_charRange = Group(_singleChar + Suppress("-") + _singleChar)
-_reBracketExpr = Literal("[") + Optional("^").setResultsName("negate") + Group( OneOrMore( _charRange | _singleChar ) ).setResultsName("body") + "]"
-
-def srange(s):
-    r"""
-    Helper to easily define string ranges for use in Word construction.  Borrows
-    syntax from regexp '[]' string range definitions::
-        srange("[0-9]")   -> "0123456789"
-        srange("[a-z]")   -> "abcdefghijklmnopqrstuvwxyz"
-        srange("[a-z$_]") -> "abcdefghijklmnopqrstuvwxyz$_"
-    The input string must be enclosed in []'s, and the returned string is the expanded
-    character set joined into a single string.
-    The values enclosed in the []'s may be:
-     - a single character
-     - an escaped character with a leading backslash (such as C{\-} or C{\]})
-     - an escaped hex character with a leading C{'\x'} (C{\x21}, which is a C{'!'} character) 
-         (C{\0x##} is also supported for backwards compatibility) 
-     - an escaped octal character with a leading C{'\0'} (C{\041}, which is a C{'!'} character)
-     - a range of any of the above, separated by a dash (C{'a-z'}, etc.)
-     - any combination of the above (C{'aeiouy'}, C{'a-zA-Z0-9_$'}, etc.)
-    """
-    _expanded = lambda p: p if not isinstance(p,ParseResults) else ''.join(unichr(c) for c in range(ord(p[0]),ord(p[1])+1))
-    try:
-        return "".join(_expanded(part) for part in _reBracketExpr.parseString(s).body)
-    except Exception:
-        return ""
-
-def matchOnlyAtCol(n):
-    """
-    Helper method for defining parse actions that require matching at a specific
-    column in the input text.
-    """
-    def verifyCol(strg,locn,toks):
-        if col(locn,strg) != n:
-            raise ParseException(strg,locn,"matched token not at column %d" % n)
-    return verifyCol
-
-def replaceWith(replStr):
-    """
-    Helper method for common parse actions that simply return a literal value.  Especially
-    useful when used with C{L{transformString<ParserElement.transformString>}()}.
-
-    Example::
-        num = Word(nums).setParseAction(lambda toks: int(toks[0]))
-        na = oneOf("N/A NA").setParseAction(replaceWith(math.nan))
-        term = na | num
-        
-        OneOrMore(term).parseString("324 234 N/A 234") # -> [324, 234, nan, 234]
-    """
-    return lambda s,l,t: [replStr]
-
-def removeQuotes(s,l,t):
-    """
-    Helper parse action for removing quotation marks from parsed quoted strings.
-
-    Example::
-        # by default, quotation marks are included in parsed results
-        quotedString.parseString("'Now is the Winter of our Discontent'") # -> ["'Now is the Winter of our Discontent'"]
-
-        # use removeQuotes to strip quotation marks from parsed results
-        quotedString.setParseAction(removeQuotes)
-        quotedString.parseString("'Now is the Winter of our Discontent'") # -> ["Now is the Winter of our Discontent"]
-    """
-    return t[0][1:-1]
-
-def tokenMap(func, *args):
-    """
-    Helper to define a parse action by mapping a function to all elements of a ParseResults list.If any additional 
-    args are passed, they are forwarded to the given function as additional arguments after
-    the token, as in C{hex_integer = Word(hexnums).setParseAction(tokenMap(int, 16))}, which will convert the
-    parsed data to an integer using base 16.
-
-    Example (compare the last to example in L{ParserElement.transformString}::
-        hex_ints = OneOrMore(Word(hexnums)).setParseAction(tokenMap(int, 16))
-        hex_ints.runTests('''
-            00 11 22 aa FF 0a 0d 1a
-            ''')
-        
-        upperword = Word(alphas).setParseAction(tokenMap(str.upper))
-        OneOrMore(upperword).runTests('''
-            my kingdom for a horse
-            ''')
-
-        wd = Word(alphas).setParseAction(tokenMap(str.title))
-        OneOrMore(wd).setParseAction(' '.join).runTests('''
-            now is the winter of our discontent made glorious summer by this sun of york
-            ''')
-    prints::
-        00 11 22 aa FF 0a 0d 1a
-        [0, 17, 34, 170, 255, 10, 13, 26]
-
-        my kingdom for a horse
-        ['MY', 'KINGDOM', 'FOR', 'A', 'HORSE']
-
-        now is the winter of our discontent made glorious summer by this sun of york
-        ['Now Is The Winter Of Our Discontent Made Glorious Summer By This Sun Of York']
-    """
-    def pa(s,l,t):
-        return [func(tokn, *args) for tokn in t]
-
-    try:
-        func_name = getattr(func, '__name__', 
-                            getattr(func, '__class__').__name__)
-    except Exception:
-        func_name = str(func)
-    pa.__name__ = func_name
-
-    return pa
-
-upcaseTokens = tokenMap(lambda t: _ustr(t).upper())
-"""(Deprecated) Helper parse action to convert tokens to upper case. Deprecated in favor of L{pyparsing_common.upcaseTokens}"""
-
-downcaseTokens = tokenMap(lambda t: _ustr(t).lower())
-"""(Deprecated) Helper parse action to convert tokens to lower case. Deprecated in favor of L{pyparsing_common.downcaseTokens}"""
-    
-def _makeTags(tagStr, xml):
-    """Internal helper to construct opening and closing tag expressions, given a tag name"""
-    if isinstance(tagStr,basestring):
-        resname = tagStr
-        tagStr = Keyword(tagStr, caseless=not xml)
-    else:
-        resname = tagStr.name
-
-    tagAttrName = Word(alphas,alphanums+"_-:")
-    if (xml):
-        tagAttrValue = dblQuotedString.copy().setParseAction( removeQuotes )
-        openTag = Suppress("<") + tagStr("tag") + \
-                Dict(ZeroOrMore(Group( tagAttrName + Suppress("=") + tagAttrValue ))) + \
-                Optional("/",default=[False]).setResultsName("empty").setParseAction(lambda s,l,t:t[0]=='/') + Suppress(">")
-    else:
-        printablesLessRAbrack = "".join(c for c in printables if c not in ">")
-        tagAttrValue = quotedString.copy().setParseAction( removeQuotes ) | Word(printablesLessRAbrack)
-        openTag = Suppress("<") + tagStr("tag") + \
-                Dict(ZeroOrMore(Group( tagAttrName.setParseAction(downcaseTokens) + \
-                Optional( Suppress("=") + tagAttrValue ) ))) + \
-                Optional("/",default=[False]).setResultsName("empty").setParseAction(lambda s,l,t:t[0]=='/') + Suppress(">")
-    closeTag = Combine(_L("</") + tagStr + ">")
-
-    openTag = openTag.setResultsName("start"+"".join(resname.replace(":"," ").title().split())).setName("<%s>" % resname)
-    closeTag = closeTag.setResultsName("end"+"".join(resname.replace(":"," ").title().split())).setName("</%s>" % resname)
-    openTag.tag = resname
-    closeTag.tag = resname
-    return openTag, closeTag
-
-def makeHTMLTags(tagStr):
-    """
-    Helper to construct opening and closing tag expressions for HTML, given a tag name. Matches
-    tags in either upper or lower case, attributes with namespaces and with quoted or unquoted values.
-
-    Example::
-        text = '<td>More info at the <a href="http://pyparsing.wikispaces.com">pyparsing</a> wiki page</td>'
-        # makeHTMLTags returns pyparsing expressions for the opening and closing tags as a 2-tuple
-        a,a_end = makeHTMLTags("A")
-        link_expr = a + SkipTo(a_end)("link_text") + a_end
-        
-        for link in link_expr.searchString(text):
-            # attributes in the <A> tag (like "href" shown here) are also accessible as named results
-            print(link.link_text, '->', link.href)
-    prints::
-        pyparsing -> http://pyparsing.wikispaces.com
-    """
-    return _makeTags( tagStr, False )
-
-def makeXMLTags(tagStr):
-    """
-    Helper to construct opening and closing tag expressions for XML, given a tag name. Matches
-    tags only in the given upper/lower case.
-
-    Example: similar to L{makeHTMLTags}
-    """
-    return _makeTags( tagStr, True )
-
-def withAttribute(*args,**attrDict):
-    """
-    Helper to create a validating parse action to be used with start tags created
-    with C{L{makeXMLTags}} or C{L{makeHTMLTags}}. Use C{withAttribute} to qualify a starting tag
-    with a required attribute value, to avoid false matches on common tags such as
-    C{<TD>} or C{<DIV>}.
-
-    Call C{withAttribute} with a series of attribute names and values. Specify the list
-    of filter attributes names and values as:
-     - keyword arguments, as in C{(align="right")}, or
-     - as an explicit dict with C{**} operator, when an attribute name is also a Python
-          reserved word, as in C{**{"class":"Customer", "align":"right"}}
-     - a list of name-value tuples, as in ( ("ns1:class", "Customer"), ("ns2:align","right") )
-    For attribute names with a namespace prefix, you must use the second form.  Attribute
-    names are matched insensitive to upper/lower case.
-       
-    If just testing for C{class} (with or without a namespace), use C{L{withClass}}.
-
-    To verify that the attribute exists, but without specifying a value, pass
-    C{withAttribute.ANY_VALUE} as the value.
-
-    Example::
-        html = '''
-            <div>
-            Some text
-            <div type="grid">1 4 0 1 0</div>
-            <div type="graph">1,3 2,3 1,1</div>
-            <div>this has no type</div>
-            </div>
-                
-        '''
-        div,div_end = makeHTMLTags("div")
-
-        # only match div tag having a type attribute with value "grid"
-        div_grid = div().setParseAction(withAttribute(type="grid"))
-        grid_expr = div_grid + SkipTo(div | div_end)("body")
-        for grid_header in grid_expr.searchString(html):
-            print(grid_header.body)
-        
-        # construct a match with any div tag having a type attribute, regardless of the value
-        div_any_type = div().setParseAction(withAttribute(type=withAttribute.ANY_VALUE))
-        div_expr = div_any_type + SkipTo(div | div_end)("body")
-        for div_header in div_expr.searchString(html):
-            print(div_header.body)
-    prints::
-        1 4 0 1 0
-
-        1 4 0 1 0
-        1,3 2,3 1,1
-    """
-    if args:
-        attrs = args[:]
-    else:
-        attrs = attrDict.items()
-    attrs = [(k,v) for k,v in attrs]
-    def pa(s,l,tokens):
-        for attrName,attrValue in attrs:
-            if attrName not in tokens:
-                raise ParseException(s,l,"no matching attribute " + attrName)
-            if attrValue != withAttribute.ANY_VALUE and tokens[attrName] != attrValue:
-                raise ParseException(s,l,"attribute '%s' has value '%s', must be '%s'" %
-                                            (attrName, tokens[attrName], attrValue))
-    return pa
-withAttribute.ANY_VALUE = object()
-
-def withClass(classname, namespace=''):
-    """
-    Simplified version of C{L{withAttribute}} when matching on a div class - made
-    difficult because C{class} is a reserved word in Python.
-
-    Example::
-        html = '''
-            <div>
-            Some text
-            <div class="grid">1 4 0 1 0</div>
-            <div class="graph">1,3 2,3 1,1</div>
-            <div>this &lt;div&gt; has no class</div>
-            </div>
-                
-        '''
-        div,div_end = makeHTMLTags("div")
-        div_grid = div().setParseAction(withClass("grid"))
-        
-        grid_expr = div_grid + SkipTo(div | div_end)("body")
-        for grid_header in grid_expr.searchString(html):
-            print(grid_header.body)
-        
-        div_any_type = div().setParseAction(withClass(withAttribute.ANY_VALUE))
-        div_expr = div_any_type + SkipTo(div | div_end)("body")
-        for div_header in div_expr.searchString(html):
-            print(div_header.body)
-    prints::
-        1 4 0 1 0
-
-        1 4 0 1 0
-        1,3 2,3 1,1
-    """
-    classattr = "%s:class" % namespace if namespace else "class"
-    return withAttribute(**{classattr : classname})        
-
-opAssoc = _Constants()
-opAssoc.LEFT = object()
-opAssoc.RIGHT = object()
-
-def infixNotation( baseExpr, opList, lpar=Suppress('('), rpar=Suppress(')') ):
-    """
-    Helper method for constructing grammars of expressions made up of
-    operators working in a precedence hierarchy.  Operators may be unary or
-    binary, left- or right-associative.  Parse actions can also be attached
-    to operator expressions. The generated parser will also recognize the use 
-    of parentheses to override operator precedences (see example below).
-    
-    Note: if you define a deep operator list, you may see performance issues
-    when using infixNotation. See L{ParserElement.enablePackrat} for a
-    mechanism to potentially improve your parser performance.
-
-    Parameters:
-     - baseExpr - expression representing the most basic element for the nested
-     - opList - list of tuples, one for each operator precedence level in the
-      expression grammar; each tuple is of the form
-      (opExpr, numTerms, rightLeftAssoc, parseAction), where:
-       - opExpr is the pyparsing expression for the operator;
-          may also be a string, which will be converted to a Literal;
-          if numTerms is 3, opExpr is a tuple of two expressions, for the
-          two operators separating the 3 terms
-       - numTerms is the number of terms for this operator (must
-          be 1, 2, or 3)
-       - rightLeftAssoc is the indicator whether the operator is
-          right or left associative, using the pyparsing-defined
-          constants C{opAssoc.RIGHT} and C{opAssoc.LEFT}.
-       - parseAction is the parse action to be associated with
-          expressions matching this operator expression (the
-          parse action tuple member may be omitted); if the parse action
-          is passed a tuple or list of functions, this is equivalent to
-          calling C{setParseAction(*fn)} (L{ParserElement.setParseAction})
-     - lpar - expression for matching left-parentheses (default=C{Suppress('(')})
-     - rpar - expression for matching right-parentheses (default=C{Suppress(')')})
-
-    Example::
-        # simple example of four-function arithmetic with ints and variable names
-        integer = pyparsing_common.signed_integer
-        varname = pyparsing_common.identifier 
-        
-        arith_expr = infixNotation(integer | varname,
-            [
-            ('-', 1, opAssoc.RIGHT),
-            (oneOf('* /'), 2, opAssoc.LEFT),
-            (oneOf('+ -'), 2, opAssoc.LEFT),
-            ])
-        
-        arith_expr.runTests('''
-            5+3*6
-            (5+3)*6
-            -2--11
-            ''', fullDump=False)
-    prints::
-        5+3*6
-        [[5, '+', [3, '*', 6]]]
-
-        (5+3)*6
-        [[[5, '+', 3], '*', 6]]
-
-        -2--11
-        [[['-', 2], '-', ['-', 11]]]
-    """
-    ret = Forward()
-    lastExpr = baseExpr | ( lpar + ret + rpar )
-    for i,operDef in enumerate(opList):
-        opExpr,arity,rightLeftAssoc,pa = (operDef + (None,))[:4]
-        termName = "%s term" % opExpr if arity < 3 else "%s%s term" % opExpr
-        if arity == 3:
-            if opExpr is None or len(opExpr) != 2:
-                raise ValueError("if numterms=3, opExpr must be a tuple or list of two expressions")
-            opExpr1, opExpr2 = opExpr
-        thisExpr = Forward().setName(termName)
-        if rightLeftAssoc == opAssoc.LEFT:
-            if arity == 1:
-                matchExpr = FollowedBy(lastExpr + opExpr) + Group( lastExpr + OneOrMore( opExpr ) )
-            elif arity == 2:
-                if opExpr is not None:
-                    matchExpr = FollowedBy(lastExpr + opExpr + lastExpr) + Group( lastExpr + OneOrMore( opExpr + lastExpr ) )
-                else:
-                    matchExpr = FollowedBy(lastExpr+lastExpr) + Group( lastExpr + OneOrMore(lastExpr) )
-            elif arity == 3:
-                matchExpr = FollowedBy(lastExpr + opExpr1 + lastExpr + opExpr2 + lastExpr) + \
-                            Group( lastExpr + opExpr1 + lastExpr + opExpr2 + lastExpr )
-            else:
-                raise ValueError("operator must be unary (1), binary (2), or ternary (3)")
-        elif rightLeftAssoc == opAssoc.RIGHT:
-            if arity == 1:
-                # try to avoid LR with this extra test
-                if not isinstance(opExpr, Optional):
-                    opExpr = Optional(opExpr)
-                matchExpr = FollowedBy(opExpr.expr + thisExpr) + Group( opExpr + thisExpr )
-            elif arity == 2:
-                if opExpr is not None:
-                    matchExpr = FollowedBy(lastExpr + opExpr + thisExpr) + Group( lastExpr + OneOrMore( opExpr + thisExpr ) )
-                else:
-                    matchExpr = FollowedBy(lastExpr + thisExpr) + Group( lastExpr + OneOrMore( thisExpr ) )
-            elif arity == 3:
-                matchExpr = FollowedBy(lastExpr + opExpr1 + thisExpr + opExpr2 + thisExpr) + \
-                            Group( lastExpr + opExpr1 + thisExpr + opExpr2 + thisExpr )
-            else:
-                raise ValueError("operator must be unary (1), binary (2), or ternary (3)")
-        else:
-            raise ValueError("operator must indicate right or left associativity")
-        if pa:
-            if isinstance(pa, (tuple, list)):
-                matchExpr.setParseAction(*pa)
-            else:
-                matchExpr.setParseAction(pa)
-        thisExpr <<= ( matchExpr.setName(termName) | lastExpr )
-        lastExpr = thisExpr
-    ret <<= lastExpr
-    return ret
-
-operatorPrecedence = infixNotation
-"""(Deprecated) Former name of C{L{infixNotation}}, will be dropped in a future release."""
-
-dblQuotedString = Combine(Regex(r'"(?:[^"\n\r\\]|(?:"")|(?:\\(?:[^x]|x[0-9a-fA-F]+)))*')+'"').setName("string enclosed in double quotes")
-sglQuotedString = Combine(Regex(r"'(?:[^'\n\r\\]|(?:'')|(?:\\(?:[^x]|x[0-9a-fA-F]+)))*")+"'").setName("string enclosed in single quotes")
-quotedString = Combine(Regex(r'"(?:[^"\n\r\\]|(?:"")|(?:\\(?:[^x]|x[0-9a-fA-F]+)))*')+'"'|
-                       Regex(r"'(?:[^'\n\r\\]|(?:'')|(?:\\(?:[^x]|x[0-9a-fA-F]+)))*")+"'").setName("quotedString using single or double quotes")
-unicodeString = Combine(_L('u') + quotedString.copy()).setName("unicode string literal")
-
-def nestedExpr(opener="(", closer=")", content=None, ignoreExpr=quotedString.copy()):
-    """
-    Helper method for defining nested lists enclosed in opening and closing
-    delimiters ("(" and ")" are the default).
-
-    Parameters:
-     - opener - opening character for a nested list (default=C{"("}); can also be a pyparsing expression
-     - closer - closing character for a nested list (default=C{")"}); can also be a pyparsing expression
-     - content - expression for items within the nested lists (default=C{None})
-     - ignoreExpr - expression for ignoring opening and closing delimiters (default=C{quotedString})
-
-    If an expression is not provided for the content argument, the nested
-    expression will capture all whitespace-delimited content between delimiters
-    as a list of separate values.
-
-    Use the C{ignoreExpr} argument to define expressions that may contain
-    opening or closing characters that should not be treated as opening
-    or closing characters for nesting, such as quotedString or a comment
-    expression.  Specify multiple expressions using an C{L{Or}} or C{L{MatchFirst}}.
-    The default is L{quotedString}, but if no expressions are to be ignored,
-    then pass C{None} for this argument.
-
-    Example::
-        data_type = oneOf("void int short long char float double")
-        decl_data_type = Combine(data_type + Optional(Word('*')))
-        ident = Word(alphas+'_', alphanums+'_')
-        number = pyparsing_common.number
-        arg = Group(decl_data_type + ident)
-        LPAR,RPAR = map(Suppress, "()")
-
-        code_body = nestedExpr('{', '}', ignoreExpr=(quotedString | cStyleComment))
-
-        c_function = (decl_data_type("type") 
-                      + ident("name")
-                      + LPAR + Optional(delimitedList(arg), [])("args") + RPAR 
-                      + code_body("body"))
-        c_function.ignore(cStyleComment)
-        
-        source_code = '''
-            int is_odd(int x) { 
-                return (x%2); 
-            }
-                
-            int dec_to_hex(char hchar) { 
-                if (hchar >= '0' && hchar <= '9') { 
-                    return (ord(hchar)-ord('0')); 
-                } else { 
-                    return (10+ord(hchar)-ord('A'));
-                } 
-            }
-        '''
-        for func in c_function.searchString(source_code):
-            print("%(name)s (%(type)s) args: %(args)s" % func)
-
-    prints::
-        is_odd (int) args: [['int', 'x']]
-        dec_to_hex (int) args: [['char', 'hchar']]
-    """
-    if opener == closer:
-        raise ValueError("opening and closing strings cannot be the same")
-    if content is None:
-        if isinstance(opener,basestring) and isinstance(closer,basestring):
-            if len(opener) == 1 and len(closer)==1:
-                if ignoreExpr is not None:
-                    content = (Combine(OneOrMore(~ignoreExpr +
-                                    CharsNotIn(opener+closer+ParserElement.DEFAULT_WHITE_CHARS,exact=1))
-                                ).setParseAction(lambda t:t[0].strip()))
-                else:
-                    content = (empty.copy()+CharsNotIn(opener+closer+ParserElement.DEFAULT_WHITE_CHARS
-                                ).setParseAction(lambda t:t[0].strip()))
-            else:
-                if ignoreExpr is not None:
-                    content = (Combine(OneOrMore(~ignoreExpr + 
-                                    ~Literal(opener) + ~Literal(closer) +
-                                    CharsNotIn(ParserElement.DEFAULT_WHITE_CHARS,exact=1))
-                                ).setParseAction(lambda t:t[0].strip()))
-                else:
-                    content = (Combine(OneOrMore(~Literal(opener) + ~Literal(closer) +
-                                    CharsNotIn(ParserElement.DEFAULT_WHITE_CHARS,exact=1))
-                                ).setParseAction(lambda t:t[0].strip()))
-        else:
-            raise ValueError("opening and closing arguments must be strings if no content expression is given")
-    ret = Forward()
-    if ignoreExpr is not None:
-        ret <<= Group( Suppress(opener) + ZeroOrMore( ignoreExpr | ret | content ) + Suppress(closer) )
-    else:
-        ret <<= Group( Suppress(opener) + ZeroOrMore( ret | content )  + Suppress(closer) )
-    ret.setName('nested %s%s expression' % (opener,closer))
-    return ret
-
-def indentedBlock(blockStatementExpr, indentStack, indent=True):
-    """
-    Helper method for defining space-delimited indentation blocks, such as
-    those used to define block statements in Python source code.
-
-    Parameters:
-     - blockStatementExpr - expression defining syntax of statement that
-            is repeated within the indented block
-     - indentStack - list created by caller to manage indentation stack
-            (multiple statementWithIndentedBlock expressions within a single grammar
-            should share a common indentStack)
-     - indent - boolean indicating whether block must be indented beyond the
-            the current level; set to False for block of left-most statements
-            (default=C{True})
-
-    A valid block must contain at least one C{blockStatement}.
-
-    Example::
-        data = '''
-        def A(z):
-          A1
-          B = 100
-          G = A2
-          A2
-          A3
-        B
-        def BB(a,b,c):
-          BB1
-          def BBA():
-            bba1
-            bba2
-            bba3
-        C
-        D
-        def spam(x,y):
-             def eggs(z):
-                 pass
-        '''
-
-
-        indentStack = [1]
-        stmt = Forward()
-
-        identifier = Word(alphas, alphanums)
-        funcDecl = ("def" + identifier + Group( "(" + Optional( delimitedList(identifier) ) + ")" ) + ":")
-        func_body = indentedBlock(stmt, indentStack)
-        funcDef = Group( funcDecl + func_body )
-
-        rvalue = Forward()
-        funcCall = Group(identifier + "(" + Optional(delimitedList(rvalue)) + ")")
-        rvalue << (funcCall | identifier | Word(nums))
-        assignment = Group(identifier + "=" + rvalue)
-        stmt << ( funcDef | assignment | identifier )
-
-        module_body = OneOrMore(stmt)
-
-        parseTree = module_body.parseString(data)
-        parseTree.pprint()
-    prints::
-        [['def',
-          'A',
-          ['(', 'z', ')'],
-          ':',
-          [['A1'], [['B', '=', '100']], [['G', '=', 'A2']], ['A2'], ['A3']]],
-         'B',
-         ['def',
-          'BB',
-          ['(', 'a', 'b', 'c', ')'],
-          ':',
-          [['BB1'], [['def', 'BBA', ['(', ')'], ':', [['bba1'], ['bba2'], ['bba3']]]]]],
-         'C',
-         'D',
-         ['def',
-          'spam',
-          ['(', 'x', 'y', ')'],
-          ':',
-          [[['def', 'eggs', ['(', 'z', ')'], ':', [['pass']]]]]]] 
-    """
-    def checkPeerIndent(s,l,t):
-        if l >= len(s): return
-        curCol = col(l,s)
-        if curCol != indentStack[-1]:
-            if curCol > indentStack[-1]:
-                raise ParseFatalException(s,l,"illegal nesting")
-            raise ParseException(s,l,"not a peer entry")
-
-    def checkSubIndent(s,l,t):
-        curCol = col(l,s)
-        if curCol > indentStack[-1]:
-            indentStack.append( curCol )
-        else:
-            raise ParseException(s,l,"not a subentry")
-
-    def checkUnindent(s,l,t):
-        if l >= len(s): return
-        curCol = col(l,s)
-        if not(indentStack and curCol < indentStack[-1] and curCol <= indentStack[-2]):
-            raise ParseException(s,l,"not an unindent")
-        indentStack.pop()
-
-    NL = OneOrMore(LineEnd().setWhitespaceChars("\t ").suppress())
-    INDENT = (Empty() + Empty().setParseAction(checkSubIndent)).setName('INDENT')
-    PEER   = Empty().setParseAction(checkPeerIndent).setName('')
-    UNDENT = Empty().setParseAction(checkUnindent).setName('UNINDENT')
-    if indent:
-        smExpr = Group( Optional(NL) +
-            #~ FollowedBy(blockStatementExpr) +
-            INDENT + (OneOrMore( PEER + Group(blockStatementExpr) + Optional(NL) )) + UNDENT)
-    else:
-        smExpr = Group( Optional(NL) +
-            (OneOrMore( PEER + Group(blockStatementExpr) + Optional(NL) )) )
-    blockStatementExpr.ignore(_bslash + LineEnd())
-    return smExpr.setName('indented block')
-
-alphas8bit = srange(r"[\0xc0-\0xd6\0xd8-\0xf6\0xf8-\0xff]")
-punc8bit = srange(r"[\0xa1-\0xbf\0xd7\0xf7]")
-
-anyOpenTag,anyCloseTag = makeHTMLTags(Word(alphas,alphanums+"_:").setName('any tag'))
-_htmlEntityMap = dict(zip("gt lt amp nbsp quot apos".split(),'><& "\''))
-commonHTMLEntity = Regex('&(?P<entity>' + '|'.join(_htmlEntityMap.keys()) +");").setName("common HTML entity")
-def replaceHTMLEntity(t):
-    """Helper parser action to replace common HTML entities with their special characters"""
-    return _htmlEntityMap.get(t.entity)
-
-# it's easy to get these comment structures wrong - they're very common, so may as well make them available
-cStyleComment = Combine(Regex(r"/\*(?:[^*]|\*(?!/))*") + '*/').setName("C style comment")
-"Comment of the form C{/* ... */}"
-
-htmlComment = Regex(r"<!--[\s\S]*?-->").setName("HTML comment")
-"Comment of the form C{<!-- ... -->}"
-
-restOfLine = Regex(r".*").leaveWhitespace().setName("rest of line")
-dblSlashComment = Regex(r"//(?:\\\n|[^\n])*").setName("// comment")
-"Comment of the form C{// ... (to end of line)}"
-
-cppStyleComment = Combine(Regex(r"/\*(?:[^*]|\*(?!/))*") + '*/'| dblSlashComment).setName("C++ style comment")
-"Comment of either form C{L{cStyleComment}} or C{L{dblSlashComment}}"
-
-javaStyleComment = cppStyleComment
-"Same as C{L{cppStyleComment}}"
-
-pythonStyleComment = Regex(r"#.*").setName("Python style comment")
-"Comment of the form C{# ... (to end of line)}"
-
-_commasepitem = Combine(OneOrMore(Word(printables, excludeChars=',') +
-                                  Optional( Word(" \t") +
-                                            ~Literal(",") + ~LineEnd() ) ) ).streamline().setName("commaItem")
-commaSeparatedList = delimitedList( Optional( quotedString.copy() | _commasepitem, default="") ).setName("commaSeparatedList")
-"""(Deprecated) Predefined expression of 1 or more printable words or quoted strings, separated by commas.
-   This expression is deprecated in favor of L{pyparsing_common.comma_separated_list}."""
-
-# some other useful expressions - using lower-case class name since we are really using this as a namespace
-class pyparsing_common:
-    """
-    Here are some common low-level expressions that may be useful in jump-starting parser development:
-     - numeric forms (L{integers<integer>}, L{reals<real>}, L{scientific notation<sci_real>})
-     - common L{programming identifiers<identifier>}
-     - network addresses (L{MAC<mac_address>}, L{IPv4<ipv4_address>}, L{IPv6<ipv6_address>})
-     - ISO8601 L{dates<iso8601_date>} and L{datetime<iso8601_datetime>}
-     - L{UUID<uuid>}
-     - L{comma-separated list<comma_separated_list>}
-    Parse actions:
-     - C{L{convertToInteger}}
-     - C{L{convertToFloat}}
-     - C{L{convertToDate}}
-     - C{L{convertToDatetime}}
-     - C{L{stripHTMLTags}}
-     - C{L{upcaseTokens}}
-     - C{L{downcaseTokens}}
-
-    Example::
-        pyparsing_common.number.runTests('''
-            # any int or real number, returned as the appropriate type
-            100
-            -100
-            +100
-            3.14159
-            6.02e23
-            1e-12
-            ''')
-
-        pyparsing_common.fnumber.runTests('''
-            # any int or real number, returned as float
-            100
-            -100
-            +100
-            3.14159
-            6.02e23
-            1e-12
-            ''')
-
-        pyparsing_common.hex_integer.runTests('''
-            # hex numbers
-            100
-            FF
-            ''')
-
-        pyparsing_common.fraction.runTests('''
-            # fractions
-            1/2
-            -3/4
-            ''')
-
-        pyparsing_common.mixed_integer.runTests('''
-            # mixed fractions
-            1
-            1/2
-            -3/4
-            1-3/4
-            ''')
-
-        import uuid
-        pyparsing_common.uuid.setParseAction(tokenMap(uuid.UUID))
-        pyparsing_common.uuid.runTests('''
-            # uuid
-            12345678-1234-5678-1234-567812345678
-            ''')
-    prints::
-        # any int or real number, returned as the appropriate type
-        100
-        [100]
-
-        -100
-        [-100]
-
-        +100
-        [100]
-
-        3.14159
-        [3.14159]
-
-        6.02e23
-        [6.02e+23]
-
-        1e-12
-        [1e-12]
-
-        # any int or real number, returned as float
-        100
-        [100.0]
-
-        -100
-        [-100.0]
-
-        +100
-        [100.0]
-
-        3.14159
-        [3.14159]
-
-        6.02e23
-        [6.02e+23]
-
-        1e-12
-        [1e-12]
-
-        # hex numbers
-        100
-        [256]
-
-        FF
-        [255]
-
-        # fractions
-        1/2
-        [0.5]
-
-        -3/4
-        [-0.75]
-
-        # mixed fractions
-        1
-        [1]
-
-        1/2
-        [0.5]
-
-        -3/4
-        [-0.75]
-
-        1-3/4
-        [1.75]
-
-        # uuid
-        12345678-1234-5678-1234-567812345678
-        [UUID('12345678-1234-5678-1234-567812345678')]
-    """
-
-    convertToInteger = tokenMap(int)
-    """
-    Parse action for converting parsed integers to Python int
-    """
-
-    convertToFloat = tokenMap(float)
-    """
-    Parse action for converting parsed numbers to Python float
-    """
-
-    integer = Word(nums).setName("integer").setParseAction(convertToInteger)
-    """expression that parses an unsigned integer, returns an int"""
-
-    hex_integer = Word(hexnums).setName("hex integer").setParseAction(tokenMap(int,16))
-    """expression that parses a hexadecimal integer, returns an int"""
-
-    signed_integer = Regex(r'[+-]?\d+').setName("signed integer").setParseAction(convertToInteger)
-    """expression that parses an integer with optional leading sign, returns an int"""
-
-    fraction = (signed_integer().setParseAction(convertToFloat) + '/' + signed_integer().setParseAction(convertToFloat)).setName("fraction")
-    """fractional expression of an integer divided by an integer, returns a float"""
-    fraction.addParseAction(lambda t: t[0]/t[-1])
-
-    mixed_integer = (fraction | signed_integer + Optional(Optional('-').suppress() + fraction)).setName("fraction or mixed integer-fraction")
-    """mixed integer of the form 'integer - fraction', with optional leading integer, returns float"""
-    mixed_integer.addParseAction(sum)
-
-    real = Regex(r'[+-]?\d+\.\d*').setName("real number").setParseAction(convertToFloat)
-    """expression that parses a floating point number and returns a float"""
-
-    sci_real = Regex(r'[+-]?\d+([eE][+-]?\d+|\.\d*([eE][+-]?\d+)?)').setName("real number with scientific notation").setParseAction(convertToFloat)
-    """expression that parses a floating point number with optional scientific notation and returns a float"""
-
-    # streamlining this expression makes the docs nicer-looking
-    number = (sci_real | real | signed_integer).streamline()
-    """any numeric expression, returns the corresponding Python type"""
-
-    fnumber = Regex(r'[+-]?\d+\.?\d*([eE][+-]?\d+)?').setName("fnumber").setParseAction(convertToFloat)
-    """any int or real number, returned as float"""
-    
-    identifier = Word(alphas+'_', alphanums+'_').setName("identifier")
-    """typical code identifier (leading alpha or '_', followed by 0 or more alphas, nums, or '_')"""
-    
-    ipv4_address = Regex(r'(25[0-5]|2[0-4][0-9]|1?[0-9]{1,2})(\.(25[0-5]|2[0-4][0-9]|1?[0-9]{1,2})){3}').setName("IPv4 address")
-    "IPv4 address (C{0.0.0.0 - 255.255.255.255})"
-
-    _ipv6_part = Regex(r'[0-9a-fA-F]{1,4}').setName("hex_integer")
-    _full_ipv6_address = (_ipv6_part + (':' + _ipv6_part)*7).setName("full IPv6 address")
-    _short_ipv6_address = (Optional(_ipv6_part + (':' + _ipv6_part)*(0,6)) + "::" + Optional(_ipv6_part + (':' + _ipv6_part)*(0,6))).setName("short IPv6 address")
-    _short_ipv6_address.addCondition(lambda t: sum(1 for tt in t if pyparsing_common._ipv6_part.matches(tt)) < 8)
-    _mixed_ipv6_address = ("::ffff:" + ipv4_address).setName("mixed IPv6 address")
-    ipv6_address = Combine((_full_ipv6_address | _mixed_ipv6_address | _short_ipv6_address).setName("IPv6 address")).setName("IPv6 address")
-    "IPv6 address (long, short, or mixed form)"
-    
-    mac_address = Regex(r'[0-9a-fA-F]{2}([:.-])[0-9a-fA-F]{2}(?:\1[0-9a-fA-F]{2}){4}').setName("MAC address")
-    "MAC address xx:xx:xx:xx:xx (may also have '-' or '.' delimiters)"
-
-    @staticmethod
-    def convertToDate(fmt="%Y-%m-%d"):
-        """
-        Helper to create a parse action for converting parsed date string to Python datetime.date
-
-        Params -
-         - fmt - format to be passed to datetime.strptime (default=C{"%Y-%m-%d"})
-
-        Example::
-            date_expr = pyparsing_common.iso8601_date.copy()
-            date_expr.setParseAction(pyparsing_common.convertToDate())
-            print(date_expr.parseString("1999-12-31"))
-        prints::
-            [datetime.date(1999, 12, 31)]
-        """
-        def cvt_fn(s,l,t):
-            try:
-                return datetime.strptime(t[0], fmt).date()
-            except ValueError as ve:
-                raise ParseException(s, l, str(ve))
-        return cvt_fn
-
-    @staticmethod
-    def convertToDatetime(fmt="%Y-%m-%dT%H:%M:%S.%f"):
-        """
-        Helper to create a parse action for converting parsed datetime string to Python datetime.datetime
-
-        Params -
-         - fmt - format to be passed to datetime.strptime (default=C{"%Y-%m-%dT%H:%M:%S.%f"})
-
-        Example::
-            dt_expr = pyparsing_common.iso8601_datetime.copy()
-            dt_expr.setParseAction(pyparsing_common.convertToDatetime())
-            print(dt_expr.parseString("1999-12-31T23:59:59.999"))
-        prints::
-            [datetime.datetime(1999, 12, 31, 23, 59, 59, 999000)]
-        """
-        def cvt_fn(s,l,t):
-            try:
-                return datetime.strptime(t[0], fmt)
-            except ValueError as ve:
-                raise ParseException(s, l, str(ve))
-        return cvt_fn
-
-    iso8601_date = Regex(r'(?P<year>\d{4})(?:-(?P<month>\d\d)(?:-(?P<day>\d\d))?)?').setName("ISO8601 date")
-    "ISO8601 date (C{yyyy-mm-dd})"
-
-    iso8601_datetime = Regex(r'(?P<year>\d{4})-(?P<month>\d\d)-(?P<day>\d\d)[T ](?P<hour>\d\d):(?P<minute>\d\d)(:(?P<second>\d\d(\.\d*)?)?)?(?P<tz>Z|[+-]\d\d:?\d\d)?').setName("ISO8601 datetime")
-    "ISO8601 datetime (C{yyyy-mm-ddThh:mm:ss.s(Z|+-00:00)}) - trailing seconds, milliseconds, and timezone optional; accepts separating C{'T'} or C{' '}"
-
-    uuid = Regex(r'[0-9a-fA-F]{8}(-[0-9a-fA-F]{4}){3}-[0-9a-fA-F]{12}').setName("UUID")
-    "UUID (C{xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx})"
-
-    _html_stripper = anyOpenTag.suppress() | anyCloseTag.suppress()
-    @staticmethod
-    def stripHTMLTags(s, l, tokens):
-        """
-        Parse action to remove HTML tags from web page HTML source
-
-        Example::
-            # strip HTML links from normal text 
-            text = '<td>More info at the <a href="http://pyparsing.wikispaces.com">pyparsing</a> wiki page</td>'
-            td,td_end = makeHTMLTags("TD")
-            table_text = td + SkipTo(td_end).setParseAction(pyparsing_common.stripHTMLTags)("body") + td_end
-            
-            print(table_text.parseString(text).body) # -> 'More info at the pyparsing wiki page'
-        """
-        return pyparsing_common._html_stripper.transformString(tokens[0])
-
-    _commasepitem = Combine(OneOrMore(~Literal(",") + ~LineEnd() + Word(printables, excludeChars=',') 
-                                        + Optional( White(" \t") ) ) ).streamline().setName("commaItem")
-    comma_separated_list = delimitedList( Optional( quotedString.copy() | _commasepitem, default="") ).setName("comma separated list")
-    """Predefined expression of 1 or more printable words or quoted strings, separated by commas."""
-
-    upcaseTokens = staticmethod(tokenMap(lambda t: _ustr(t).upper()))
-    """Parse action to convert tokens to upper case."""
-
-    downcaseTokens = staticmethod(tokenMap(lambda t: _ustr(t).lower()))
-    """Parse action to convert tokens to lower case."""
-
-
-if __name__ == "__main__":
-
-    selectToken    = CaselessLiteral("select")
-    fromToken      = CaselessLiteral("from")
-
-    ident          = Word(alphas, alphanums + "_$")
-
-    columnName     = delimitedList(ident, ".", combine=True).setParseAction(upcaseTokens)
-    columnNameList = Group(delimitedList(columnName)).setName("columns")
-    columnSpec     = ('*' | columnNameList)
-
-    tableName      = delimitedList(ident, ".", combine=True).setParseAction(upcaseTokens)
-    tableNameList  = Group(delimitedList(tableName)).setName("tables")
-    
-    simpleSQL      = selectToken("command") + columnSpec("columns") + fromToken + tableNameList("tables")
-
-    # demo runTests method, including embedded comments in test string
-    simpleSQL.runTests("""
-        # '*' as column list and dotted table name
-        select * from SYS.XYZZY
-
-        # caseless match on "SELECT", and casts back to "select"
-        SELECT * from XYZZY, ABC
-
-        # list of column names, and mixed case SELECT keyword
-        Select AA,BB,CC from Sys.dual
-
-        # multiple tables
-        Select A, B, C from Sys.dual, Table2
-
-        # invalid SELECT keyword - should fail
-        Xelect A, B, C from Sys.dual
-
-        # incomplete command - should fail
-        Select
-
-        # invalid column name - should fail
-        Select ^^^ frox Sys.dual
-
-        """)
-
-    pyparsing_common.number.runTests("""
-        100
-        -100
-        +100
-        3.14159
-        6.02e23
-        1e-12
-        """)
-
-    # any int or real number, returned as float
-    pyparsing_common.fnumber.runTests("""
-        100
-        -100
-        +100
-        3.14159
-        6.02e23
-        1e-12
-        """)
-
-    pyparsing_common.hex_integer.runTests("""
-        100
-        FF
-        """)
-
-    import uuid
-    pyparsing_common.uuid.setParseAction(tokenMap(uuid.UUID))
-    pyparsing_common.uuid.runTests("""
-        12345678-1234-5678-1234-567812345678
-        """)
+# module pyparsing.py
+#
+# Copyright (c) 2003-2018  Paul T. McGuire
+#
+# Permission is hereby granted, free of charge, to any person obtaining
+# a copy of this software and associated documentation files (the
+# "Software"), to deal in the Software without restriction, including
+# without limitation the rights to use, copy, modify, merge, publish,
+# distribute, sublicense, and/or sell copies of the Software, and to
+# permit persons to whom the Software is furnished to do so, subject to
+# the following conditions:
+#
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+#
+
+__doc__ = \
+"""
+pyparsing module - Classes and methods to define and execute parsing grammars
+=============================================================================
+
+The pyparsing module is an alternative approach to creating and executing simple grammars,
+vs. the traditional lex/yacc approach, or the use of regular expressions.  With pyparsing, you
+don't need to learn a new syntax for defining grammars or matching expressions - the parsing module
+provides a library of classes that you use to construct the grammar directly in Python.
+
+Here is a program to parse "Hello, World!" (or any greeting of the form 
+C{"<salutation>, <addressee>!"}), built up using L{Word}, L{Literal}, and L{And} elements 
+(L{'+'<ParserElement.__add__>} operator gives L{And} expressions, strings are auto-converted to
+L{Literal} expressions)::
+
+    from pyparsing import Word, alphas
+
+    # define grammar of a greeting
+    greet = Word(alphas) + "," + Word(alphas) + "!"
+
+    hello = "Hello, World!"
+    print (hello, "->", greet.parseString(hello))
+
+The program outputs the following::
+
+    Hello, World! -> ['Hello', ',', 'World', '!']
+
+The Python representation of the grammar is quite readable, owing to the self-explanatory
+class names, and the use of '+', '|' and '^' operators.
+
+The L{ParseResults} object returned from L{ParserElement.parseString<ParserElement.parseString>} can be accessed as a nested list, a dictionary, or an
+object with named attributes.
+
+The pyparsing module handles some of the problems that are typically vexing when writing text parsers:
+ - extra or missing whitespace (the above program will also handle "Hello,World!", "Hello  ,  World  !", etc.)
+ - quoted strings
+ - embedded comments
+
+
+Getting Started -
+-----------------
+Visit the classes L{ParserElement} and L{ParseResults} to see the base classes that most other pyparsing
+classes inherit from. Use the docstrings for examples of how to:
+ - construct literal match expressions from L{Literal} and L{CaselessLiteral} classes
+ - construct character word-group expressions using the L{Word} class
+ - see how to create repetitive expressions using L{ZeroOrMore} and L{OneOrMore} classes
+ - use L{'+'<And>}, L{'|'<MatchFirst>}, L{'^'<Or>}, and L{'&'<Each>} operators to combine simple expressions into more complex ones
+ - associate names with your parsed results using L{ParserElement.setResultsName}
+ - find some helpful expression short-cuts like L{delimitedList} and L{oneOf}
+ - find more useful common expressions in the L{pyparsing_common} namespace class
+"""
+
+__version__ = "2.2.1"
+__versionTime__ = "18 Sep 2018 00:49 UTC"
+__author__ = "Paul McGuire <ptmcg@users.sourceforge.net>"
+
+import string
+from weakref import ref as wkref
+import copy
+import sys
+import warnings
+import re
+import sre_constants
+import collections
+import pprint
+import traceback
+import types
+from datetime import datetime
+
+try:
+    from _thread import RLock
+except ImportError:
+    from threading import RLock
+
+try:
+    # Python 3
+    from collections.abc import Iterable
+    from collections.abc import MutableMapping
+except ImportError:
+    # Python 2.7
+    from collections import Iterable
+    from collections import MutableMapping
+
+try:
+    from collections import OrderedDict as _OrderedDict
+except ImportError:
+    try:
+        from ordereddict import OrderedDict as _OrderedDict
+    except ImportError:
+        _OrderedDict = None
+
+#~ sys.stderr.write( "testing pyparsing module, version %s, %s\n" % (__version__,__versionTime__ ) )
+
+__all__ = [
+'And', 'CaselessKeyword', 'CaselessLiteral', 'CharsNotIn', 'Combine', 'Dict', 'Each', 'Empty',
+'FollowedBy', 'Forward', 'GoToColumn', 'Group', 'Keyword', 'LineEnd', 'LineStart', 'Literal',
+'MatchFirst', 'NoMatch', 'NotAny', 'OneOrMore', 'OnlyOnce', 'Optional', 'Or',
+'ParseBaseException', 'ParseElementEnhance', 'ParseException', 'ParseExpression', 'ParseFatalException',
+'ParseResults', 'ParseSyntaxException', 'ParserElement', 'QuotedString', 'RecursiveGrammarException',
+'Regex', 'SkipTo', 'StringEnd', 'StringStart', 'Suppress', 'Token', 'TokenConverter', 
+'White', 'Word', 'WordEnd', 'WordStart', 'ZeroOrMore',
+'alphanums', 'alphas', 'alphas8bit', 'anyCloseTag', 'anyOpenTag', 'cStyleComment', 'col',
+'commaSeparatedList', 'commonHTMLEntity', 'countedArray', 'cppStyleComment', 'dblQuotedString',
+'dblSlashComment', 'delimitedList', 'dictOf', 'downcaseTokens', 'empty', 'hexnums',
+'htmlComment', 'javaStyleComment', 'line', 'lineEnd', 'lineStart', 'lineno',
+'makeHTMLTags', 'makeXMLTags', 'matchOnlyAtCol', 'matchPreviousExpr', 'matchPreviousLiteral',
+'nestedExpr', 'nullDebugAction', 'nums', 'oneOf', 'opAssoc', 'operatorPrecedence', 'printables',
+'punc8bit', 'pythonStyleComment', 'quotedString', 'removeQuotes', 'replaceHTMLEntity', 
+'replaceWith', 'restOfLine', 'sglQuotedString', 'srange', 'stringEnd',
+'stringStart', 'traceParseAction', 'unicodeString', 'upcaseTokens', 'withAttribute',
+'indentedBlock', 'originalTextFor', 'ungroup', 'infixNotation','locatedExpr', 'withClass',
+'CloseMatch', 'tokenMap', 'pyparsing_common',
+]
+
+system_version = tuple(sys.version_info)[:3]
+PY_3 = system_version[0] == 3
+if PY_3:
+    _MAX_INT = sys.maxsize
+    basestring = str
+    unichr = chr
+    _ustr = str
+
+    # build list of single arg builtins, that can be used as parse actions
+    singleArgBuiltins = [sum, len, sorted, reversed, list, tuple, set, any, all, min, max]
+
+else:
+    _MAX_INT = sys.maxint
+    range = xrange
+
+    def _ustr(obj):
+        """Drop-in replacement for str(obj) that tries to be Unicode friendly. It first tries
+           str(obj). If that fails with a UnicodeEncodeError, then it tries unicode(obj). It
+           then < returns the unicode object | encodes it with the default encoding | ... >.
+        """
+        if isinstance(obj,unicode):
+            return obj
+
+        try:
+            # If this works, then _ustr(obj) has the same behaviour as str(obj), so
+            # it won't break any existing code.
+            return str(obj)
+
+        except UnicodeEncodeError:
+            # Else encode it
+            ret = unicode(obj).encode(sys.getdefaultencoding(), 'xmlcharrefreplace')
+            xmlcharref = Regex(r'&#\d+;')
+            xmlcharref.setParseAction(lambda t: '\\u' + hex(int(t[0][2:-1]))[2:])
+            return xmlcharref.transformString(ret)
+
+    # build list of single arg builtins, tolerant of Python version, that can be used as parse actions
+    singleArgBuiltins = []
+    import __builtin__
+    for fname in "sum len sorted reversed list tuple set any all min max".split():
+        try:
+            singleArgBuiltins.append(getattr(__builtin__,fname))
+        except AttributeError:
+            continue
+            
+_generatorType = type((y for y in range(1)))
+ 
+def _xml_escape(data):
+    """Escape &, <, >, ", ', etc. in a string of data."""
+
+    # ampersand must be replaced first
+    from_symbols = '&><"\''
+    to_symbols = ('&'+s+';' for s in "amp gt lt quot apos".split())
+    for from_,to_ in zip(from_symbols, to_symbols):
+        data = data.replace(from_, to_)
+    return data
+
+class _Constants(object):
+    pass
+
+alphas     = string.ascii_uppercase + string.ascii_lowercase
+nums       = "0123456789"
+hexnums    = nums + "ABCDEFabcdef"
+alphanums  = alphas + nums
+_bslash    = chr(92)
+printables = "".join(c for c in string.printable if c not in string.whitespace)
+
+class ParseBaseException(Exception):
+    """base exception class for all parsing runtime exceptions"""
+    # Performance tuning: we construct a *lot* of these, so keep this
+    # constructor as small and fast as possible
+    def __init__( self, pstr, loc=0, msg=None, elem=None ):
+        self.loc = loc
+        if msg is None:
+            self.msg = pstr
+            self.pstr = ""
+        else:
+            self.msg = msg
+            self.pstr = pstr
+        self.parserElement = elem
+        self.args = (pstr, loc, msg)
+
+    @classmethod
+    def _from_exception(cls, pe):
+        """
+        internal factory method to simplify creating one type of ParseException 
+        from another - avoids having __init__ signature conflicts among subclasses
+        """
+        return cls(pe.pstr, pe.loc, pe.msg, pe.parserElement)
+
+    def __getattr__( self, aname ):
+        """supported attributes by name are:
+            - lineno - returns the line number of the exception text
+            - col - returns the column number of the exception text
+            - line - returns the line containing the exception text
+        """
+        if( aname == "lineno" ):
+            return lineno( self.loc, self.pstr )
+        elif( aname in ("col", "column") ):
+            return col( self.loc, self.pstr )
+        elif( aname == "line" ):
+            return line( self.loc, self.pstr )
+        else:
+            raise AttributeError(aname)
+
+    def __str__( self ):
+        return "%s (at char %d), (line:%d, col:%d)" % \
+                ( self.msg, self.loc, self.lineno, self.column )
+    def __repr__( self ):
+        return _ustr(self)
+    def markInputline( self, markerString = ">!<" ):
+        """Extracts the exception line from the input string, and marks
+           the location of the exception with a special symbol.
+        """
+        line_str = self.line
+        line_column = self.column - 1
+        if markerString:
+            line_str = "".join((line_str[:line_column],
+                                markerString, line_str[line_column:]))
+        return line_str.strip()
+    def __dir__(self):
+        return "lineno col line".split() + dir(type(self))
+
+class ParseException(ParseBaseException):
+    """
+    Exception thrown when parse expressions don't match class;
+    supported attributes by name are:
+     - lineno - returns the line number of the exception text
+     - col - returns the column number of the exception text
+     - line - returns the line containing the exception text
+        
+    Example::
+        try:
+            Word(nums).setName("integer").parseString("ABC")
+        except ParseException as pe:
+            print(pe)
+            print("column: {}".format(pe.col))
+            
+    prints::
+       Expected integer (at char 0), (line:1, col:1)
+        column: 1
+    """
+    pass
+
+class ParseFatalException(ParseBaseException):
+    """user-throwable exception thrown when inconsistent parse content
+       is found; stops all parsing immediately"""
+    pass
+
+class ParseSyntaxException(ParseFatalException):
+    """just like L{ParseFatalException}, but thrown internally when an
+       L{ErrorStop<And._ErrorStop>} ('-' operator) indicates that parsing is to stop 
+       immediately because an unbacktrackable syntax error has been found"""
+    pass
+
+#~ class ReparseException(ParseBaseException):
+    #~ """Experimental class - parse actions can raise this exception to cause
+       #~ pyparsing to reparse the input string:
+        #~ - with a modified input string, and/or
+        #~ - with a modified start location
+       #~ Set the values of the ReparseException in the constructor, and raise the
+       #~ exception in a parse action to cause pyparsing to use the new string/location.
+       #~ Setting the values as None causes no change to be made.
+       #~ """
+    #~ def __init_( self, newstring, restartLoc ):
+        #~ self.newParseText = newstring
+        #~ self.reparseLoc = restartLoc
+
+class RecursiveGrammarException(Exception):
+    """exception thrown by L{ParserElement.validate} if the grammar could be improperly recursive"""
+    def __init__( self, parseElementList ):
+        self.parseElementTrace = parseElementList
+
+    def __str__( self ):
+        return "RecursiveGrammarException: %s" % self.parseElementTrace
+
+class _ParseResultsWithOffset(object):
+    def __init__(self,p1,p2):
+        self.tup = (p1,p2)
+    def __getitem__(self,i):
+        return self.tup[i]
+    def __repr__(self):
+        return repr(self.tup[0])
+    def setOffset(self,i):
+        self.tup = (self.tup[0],i)
+
+class ParseResults(object):
+    """
+    Structured parse results, to provide multiple means of access to the parsed data:
+       - as a list (C{len(results)})
+       - by list index (C{results[0], results[1]}, etc.)
+       - by attribute (C{results.<resultsName>} - see L{ParserElement.setResultsName})
+
+    Example::
+        integer = Word(nums)
+        date_str = (integer.setResultsName("year") + '/' 
+                        + integer.setResultsName("month") + '/' 
+                        + integer.setResultsName("day"))
+        # equivalent form:
+        # date_str = integer("year") + '/' + integer("month") + '/' + integer("day")
+
+        # parseString returns a ParseResults object
+        result = date_str.parseString("1999/12/31")
+
+        def test(s, fn=repr):
+            print("%s -> %s" % (s, fn(eval(s))))
+        test("list(result)")
+        test("result[0]")
+        test("result['month']")
+        test("result.day")
+        test("'month' in result")
+        test("'minutes' in result")
+        test("result.dump()", str)
+    prints::
+        list(result) -> ['1999', '/', '12', '/', '31']
+        result[0] -> '1999'
+        result['month'] -> '12'
+        result.day -> '31'
+        'month' in result -> True
+        'minutes' in result -> False
+        result.dump() -> ['1999', '/', '12', '/', '31']
+        - day: 31
+        - month: 12
+        - year: 1999
+    """
+    def __new__(cls, toklist=None, name=None, asList=True, modal=True ):
+        if isinstance(toklist, cls):
+            return toklist
+        retobj = object.__new__(cls)
+        retobj.__doinit = True
+        return retobj
+
+    # Performance tuning: we construct a *lot* of these, so keep this
+    # constructor as small and fast as possible
+    def __init__( self, toklist=None, name=None, asList=True, modal=True, isinstance=isinstance ):
+        if self.__doinit:
+            self.__doinit = False
+            self.__name = None
+            self.__parent = None
+            self.__accumNames = {}
+            self.__asList = asList
+            self.__modal = modal
+            if toklist is None:
+                toklist = []
+            if isinstance(toklist, list):
+                self.__toklist = toklist[:]
+            elif isinstance(toklist, _generatorType):
+                self.__toklist = list(toklist)
+            else:
+                self.__toklist = [toklist]
+            self.__tokdict = dict()
+
+        if name is not None and name:
+            if not modal:
+                self.__accumNames[name] = 0
+            if isinstance(name,int):
+                name = _ustr(name) # will always return a str, but use _ustr for consistency
+            self.__name = name
+            if not (isinstance(toklist, (type(None), basestring, list)) and toklist in (None,'',[])):
+                if isinstance(toklist,basestring):
+                    toklist = [ toklist ]
+                if asList:
+                    if isinstance(toklist,ParseResults):
+                        self[name] = _ParseResultsWithOffset(toklist.copy(),0)
+                    else:
+                        self[name] = _ParseResultsWithOffset(ParseResults(toklist[0]),0)
+                    self[name].__name = name
+                else:
+                    try:
+                        self[name] = toklist[0]
+                    except (KeyError,TypeError,IndexError):
+                        self[name] = toklist
+
+    def __getitem__( self, i ):
+        if isinstance( i, (int,slice) ):
+            return self.__toklist[i]
+        else:
+            if i not in self.__accumNames:
+                return self.__tokdict[i][-1][0]
+            else:
+                return ParseResults([ v[0] for v in self.__tokdict[i] ])
+
+    def __setitem__( self, k, v, isinstance=isinstance ):
+        if isinstance(v,_ParseResultsWithOffset):
+            self.__tokdict[k] = self.__tokdict.get(k,list()) + [v]
+            sub = v[0]
+        elif isinstance(k,(int,slice)):
+            self.__toklist[k] = v
+            sub = v
+        else:
+            self.__tokdict[k] = self.__tokdict.get(k,list()) + [_ParseResultsWithOffset(v,0)]
+            sub = v
+        if isinstance(sub,ParseResults):
+            sub.__parent = wkref(self)
+
+    def __delitem__( self, i ):
+        if isinstance(i,(int,slice)):
+            mylen = len( self.__toklist )
+            del self.__toklist[i]
+
+            # convert int to slice
+            if isinstance(i, int):
+                if i < 0:
+                    i += mylen
+                i = slice(i, i+1)
+            # get removed indices
+            removed = list(range(*i.indices(mylen)))
+            removed.reverse()
+            # fixup indices in token dictionary
+            for name,occurrences in self.__tokdict.items():
+                for j in removed:
+                    for k, (value, position) in enumerate(occurrences):
+                        occurrences[k] = _ParseResultsWithOffset(value, position - (position > j))
+        else:
+            del self.__tokdict[i]
+
+    def __contains__( self, k ):
+        return k in self.__tokdict
+
+    def __len__( self ): return len( self.__toklist )
+    def __bool__(self): return ( not not self.__toklist )
+    __nonzero__ = __bool__
+    def __iter__( self ): return iter( self.__toklist )
+    def __reversed__( self ): return iter( self.__toklist[::-1] )
+    def _iterkeys( self ):
+        if hasattr(self.__tokdict, "iterkeys"):
+            return self.__tokdict.iterkeys()
+        else:
+            return iter(self.__tokdict)
+
+    def _itervalues( self ):
+        return (self[k] for k in self._iterkeys())
+            
+    def _iteritems( self ):
+        return ((k, self[k]) for k in self._iterkeys())
+
+    if PY_3:
+        keys = _iterkeys       
+        """Returns an iterator of all named result keys (Python 3.x only)."""
+
+        values = _itervalues
+        """Returns an iterator of all named result values (Python 3.x only)."""
+
+        items = _iteritems
+        """Returns an iterator of all named result key-value tuples (Python 3.x only)."""
+
+    else:
+        iterkeys = _iterkeys
+        """Returns an iterator of all named result keys (Python 2.x only)."""
+
+        itervalues = _itervalues
+        """Returns an iterator of all named result values (Python 2.x only)."""
+
+        iteritems = _iteritems
+        """Returns an iterator of all named result key-value tuples (Python 2.x only)."""
+
+        def keys( self ):
+            """Returns all named result keys (as a list in Python 2.x, as an iterator in Python 3.x)."""
+            return list(self.iterkeys())
+
+        def values( self ):
+            """Returns all named result values (as a list in Python 2.x, as an iterator in Python 3.x)."""
+            return list(self.itervalues())
+                
+        def items( self ):
+            """Returns all named result key-values (as a list of tuples in Python 2.x, as an iterator in Python 3.x)."""
+            return list(self.iteritems())
+
+    def haskeys( self ):
+        """Since keys() returns an iterator, this method is helpful in bypassing
+           code that looks for the existence of any defined results names."""
+        return bool(self.__tokdict)
+        
+    def pop( self, *args, **kwargs):
+        """
+        Removes and returns item at specified index (default=C{last}).
+        Supports both C{list} and C{dict} semantics for C{pop()}. If passed no
+        argument or an integer argument, it will use C{list} semantics
+        and pop tokens from the list of parsed tokens. If passed a 
+        non-integer argument (most likely a string), it will use C{dict}
+        semantics and pop the corresponding value from any defined 
+        results names. A second default return value argument is 
+        supported, just as in C{dict.pop()}.
+
+        Example::
+            def remove_first(tokens):
+                tokens.pop(0)
+            print(OneOrMore(Word(nums)).parseString("0 123 321")) # -> ['0', '123', '321']
+            print(OneOrMore(Word(nums)).addParseAction(remove_first).parseString("0 123 321")) # -> ['123', '321']
+
+            label = Word(alphas)
+            patt = label("LABEL") + OneOrMore(Word(nums))
+            print(patt.parseString("AAB 123 321").dump())
+
+            # Use pop() in a parse action to remove named result (note that corresponding value is not
+            # removed from list form of results)
+            def remove_LABEL(tokens):
+                tokens.pop("LABEL")
+                return tokens
+            patt.addParseAction(remove_LABEL)
+            print(patt.parseString("AAB 123 321").dump())
+        prints::
+            ['AAB', '123', '321']
+            - LABEL: AAB
+
+            ['AAB', '123', '321']
+        """
+        if not args:
+            args = [-1]
+        for k,v in kwargs.items():
+            if k == 'default':
+                args = (args[0], v)
+            else:
+                raise TypeError("pop() got an unexpected keyword argument '%s'" % k)
+        if (isinstance(args[0], int) or 
+                        len(args) == 1 or 
+                        args[0] in self):
+            index = args[0]
+            ret = self[index]
+            del self[index]
+            return ret
+        else:
+            defaultvalue = args[1]
+            return defaultvalue
+
+    def get(self, key, defaultValue=None):
+        """
+        Returns named result matching the given key, or if there is no
+        such name, then returns the given C{defaultValue} or C{None} if no
+        C{defaultValue} is specified.
+
+        Similar to C{dict.get()}.
+        
+        Example::
+            integer = Word(nums)
+            date_str = integer("year") + '/' + integer("month") + '/' + integer("day")           
+
+            result = date_str.parseString("1999/12/31")
+            print(result.get("year")) # -> '1999'
+            print(result.get("hour", "not specified")) # -> 'not specified'
+            print(result.get("hour")) # -> None
+        """
+        if key in self:
+            return self[key]
+        else:
+            return defaultValue
+
+    def insert( self, index, insStr ):
+        """
+        Inserts new element at location index in the list of parsed tokens.
+        
+        Similar to C{list.insert()}.
+
+        Example::
+            print(OneOrMore(Word(nums)).parseString("0 123 321")) # -> ['0', '123', '321']
+
+            # use a parse action to insert the parse location in the front of the parsed results
+            def insert_locn(locn, tokens):
+                tokens.insert(0, locn)
+            print(OneOrMore(Word(nums)).addParseAction(insert_locn).parseString("0 123 321")) # -> [0, '0', '123', '321']
+        """
+        self.__toklist.insert(index, insStr)
+        # fixup indices in token dictionary
+        for name,occurrences in self.__tokdict.items():
+            for k, (value, position) in enumerate(occurrences):
+                occurrences[k] = _ParseResultsWithOffset(value, position + (position > index))
+
+    def append( self, item ):
+        """
+        Add single element to end of ParseResults list of elements.
+
+        Example::
+            print(OneOrMore(Word(nums)).parseString("0 123 321")) # -> ['0', '123', '321']
+            
+            # use a parse action to compute the sum of the parsed integers, and add it to the end
+            def append_sum(tokens):
+                tokens.append(sum(map(int, tokens)))
+            print(OneOrMore(Word(nums)).addParseAction(append_sum).parseString("0 123 321")) # -> ['0', '123', '321', 444]
+        """
+        self.__toklist.append(item)
+
+    def extend( self, itemseq ):
+        """
+        Add sequence of elements to end of ParseResults list of elements.
+
+        Example::
+            patt = OneOrMore(Word(alphas))
+            
+            # use a parse action to append the reverse of the matched strings, to make a palindrome
+            def make_palindrome(tokens):
+                tokens.extend(reversed([t[::-1] for t in tokens]))
+                return ''.join(tokens)
+            print(patt.addParseAction(make_palindrome).parseString("lskdj sdlkjf lksd")) # -> 'lskdjsdlkjflksddsklfjkldsjdksl'
+        """
+        if isinstance(itemseq, ParseResults):
+            self += itemseq
+        else:
+            self.__toklist.extend(itemseq)
+
+    def clear( self ):
+        """
+        Clear all elements and results names.
+        """
+        del self.__toklist[:]
+        self.__tokdict.clear()
+
+    def __getattr__( self, name ):
+        try:
+            return self[name]
+        except KeyError:
+            return ""
+            
+        if name in self.__tokdict:
+            if name not in self.__accumNames:
+                return self.__tokdict[name][-1][0]
+            else:
+                return ParseResults([ v[0] for v in self.__tokdict[name] ])
+        else:
+            return ""
+
+    def __add__( self, other ):
+        ret = self.copy()
+        ret += other
+        return ret
+
+    def __iadd__( self, other ):
+        if other.__tokdict:
+            offset = len(self.__toklist)
+            addoffset = lambda a: offset if a<0 else a+offset
+            otheritems = other.__tokdict.items()
+            otherdictitems = [(k, _ParseResultsWithOffset(v[0],addoffset(v[1])) )
+                                for (k,vlist) in otheritems for v in vlist]
+            for k,v in otherdictitems:
+                self[k] = v
+                if isinstance(v[0],ParseResults):
+                    v[0].__parent = wkref(self)
+            
+        self.__toklist += other.__toklist
+        self.__accumNames.update( other.__accumNames )
+        return self
+
+    def __radd__(self, other):
+        if isinstance(other,int) and other == 0:
+            # useful for merging many ParseResults using sum() builtin
+            return self.copy()
+        else:
+            # this may raise a TypeError - so be it
+            return other + self
+        
+    def __repr__( self ):
+        return "(%s, %s)" % ( repr( self.__toklist ), repr( self.__tokdict ) )
+
+    def __str__( self ):
+        return '[' + ', '.join(_ustr(i) if isinstance(i, ParseResults) else repr(i) for i in self.__toklist) + ']'
+
+    def _asStringList( self, sep='' ):
+        out = []
+        for item in self.__toklist:
+            if out and sep:
+                out.append(sep)
+            if isinstance( item, ParseResults ):
+                out += item._asStringList()
+            else:
+                out.append( _ustr(item) )
+        return out
+
+    def asList( self ):
+        """
+        Returns the parse results as a nested list of matching tokens, all converted to strings.
+
+        Example::
+            patt = OneOrMore(Word(alphas))
+            result = patt.parseString("sldkj lsdkj sldkj")
+            # even though the result prints in string-like form, it is actually a pyparsing ParseResults
+            print(type(result), result) # -> <class 'pyparsing.ParseResults'> ['sldkj', 'lsdkj', 'sldkj']
+            
+            # Use asList() to create an actual list
+            result_list = result.asList()
+            print(type(result_list), result_list) # -> <class 'list'> ['sldkj', 'lsdkj', 'sldkj']
+        """
+        return [res.asList() if isinstance(res,ParseResults) else res for res in self.__toklist]
+
+    def asDict( self ):
+        """
+        Returns the named parse results as a nested dictionary.
+
+        Example::
+            integer = Word(nums)
+            date_str = integer("year") + '/' + integer("month") + '/' + integer("day")
+            
+            result = date_str.parseString('12/31/1999')
+            print(type(result), repr(result)) # -> <class 'pyparsing.ParseResults'> (['12', '/', '31', '/', '1999'], {'day': [('1999', 4)], 'year': [('12', 0)], 'month': [('31', 2)]})
+            
+            result_dict = result.asDict()
+            print(type(result_dict), repr(result_dict)) # -> <class 'dict'> {'day': '1999', 'year': '12', 'month': '31'}
+
+            # even though a ParseResults supports dict-like access, sometime you just need to have a dict
+            import json
+            print(json.dumps(result)) # -> Exception: TypeError: ... is not JSON serializable
+            print(json.dumps(result.asDict())) # -> {"month": "31", "day": "1999", "year": "12"}
+        """
+        if PY_3:
+            item_fn = self.items
+        else:
+            item_fn = self.iteritems
+            
+        def toItem(obj):
+            if isinstance(obj, ParseResults):
+                if obj.haskeys():
+                    return obj.asDict()
+                else:
+                    return [toItem(v) for v in obj]
+            else:
+                return obj
+                
+        return dict((k,toItem(v)) for k,v in item_fn())
+
+    def copy( self ):
+        """
+        Returns a new copy of a C{ParseResults} object.
+        """
+        ret = ParseResults( self.__toklist )
+        ret.__tokdict = self.__tokdict.copy()
+        ret.__parent = self.__parent
+        ret.__accumNames.update( self.__accumNames )
+        ret.__name = self.__name
+        return ret
+
+    def asXML( self, doctag=None, namedItemsOnly=False, indent="", formatted=True ):
+        """
+        (Deprecated) Returns the parse results as XML. Tags are created for tokens and lists that have defined results names.
+        """
+        nl = "\n"
+        out = []
+        namedItems = dict((v[1],k) for (k,vlist) in self.__tokdict.items()
+                                                            for v in vlist)
+        nextLevelIndent = indent + "  "
+
+        # collapse out indents if formatting is not desired
+        if not formatted:
+            indent = ""
+            nextLevelIndent = ""
+            nl = ""
+
+        selfTag = None
+        if doctag is not None:
+            selfTag = doctag
+        else:
+            if self.__name:
+                selfTag = self.__name
+
+        if not selfTag:
+            if namedItemsOnly:
+                return ""
+            else:
+                selfTag = "ITEM"
+
+        out += [ nl, indent, "<", selfTag, ">" ]
+
+        for i,res in enumerate(self.__toklist):
+            if isinstance(res,ParseResults):
+                if i in namedItems:
+                    out += [ res.asXML(namedItems[i],
+                                        namedItemsOnly and doctag is None,
+                                        nextLevelIndent,
+                                        formatted)]
+                else:
+                    out += [ res.asXML(None,
+                                        namedItemsOnly and doctag is None,
+                                        nextLevelIndent,
+                                        formatted)]
+            else:
+                # individual token, see if there is a name for it
+                resTag = None
+                if i in namedItems:
+                    resTag = namedItems[i]
+                if not resTag:
+                    if namedItemsOnly:
+                        continue
+                    else:
+                        resTag = "ITEM"
+                xmlBodyText = _xml_escape(_ustr(res))
+                out += [ nl, nextLevelIndent, "<", resTag, ">",
+                                                xmlBodyText,
+                                                "</", resTag, ">" ]
+
+        out += [ nl, indent, "</", selfTag, ">" ]
+        return "".join(out)
+
+    def __lookup(self,sub):
+        for k,vlist in self.__tokdict.items():
+            for v,loc in vlist:
+                if sub is v:
+                    return k
+        return None
+
+    def getName(self):
+        r"""
+        Returns the results name for this token expression. Useful when several 
+        different expressions might match at a particular location.
+
+        Example::
+            integer = Word(nums)
+            ssn_expr = Regex(r"\d\d\d-\d\d-\d\d\d\d")
+            house_number_expr = Suppress('#') + Word(nums, alphanums)
+            user_data = (Group(house_number_expr)("house_number") 
+                        | Group(ssn_expr)("ssn")
+                        | Group(integer)("age"))
+            user_info = OneOrMore(user_data)
+            
+            result = user_info.parseString("22 111-22-3333 #221B")
+            for item in result:
+                print(item.getName(), ':', item[0])
+        prints::
+            age : 22
+            ssn : 111-22-3333
+            house_number : 221B
+        """
+        if self.__name:
+            return self.__name
+        elif self.__parent:
+            par = self.__parent()
+            if par:
+                return par.__lookup(self)
+            else:
+                return None
+        elif (len(self) == 1 and
+               len(self.__tokdict) == 1 and
+               next(iter(self.__tokdict.values()))[0][1] in (0,-1)):
+            return next(iter(self.__tokdict.keys()))
+        else:
+            return None
+
+    def dump(self, indent='', depth=0, full=True):
+        """
+        Diagnostic method for listing out the contents of a C{ParseResults}.
+        Accepts an optional C{indent} argument so that this string can be embedded
+        in a nested display of other data.
+
+        Example::
+            integer = Word(nums)
+            date_str = integer("year") + '/' + integer("month") + '/' + integer("day")
+            
+            result = date_str.parseString('12/31/1999')
+            print(result.dump())
+        prints::
+            ['12', '/', '31', '/', '1999']
+            - day: 1999
+            - month: 31
+            - year: 12
+        """
+        out = []
+        NL = '\n'
+        out.append( indent+_ustr(self.asList()) )
+        if full:
+            if self.haskeys():
+                items = sorted((str(k), v) for k,v in self.items())
+                for k,v in items:
+                    if out:
+                        out.append(NL)
+                    out.append( "%s%s- %s: " % (indent,('  '*depth), k) )
+                    if isinstance(v,ParseResults):
+                        if v:
+                            out.append( v.dump(indent,depth+1) )
+                        else:
+                            out.append(_ustr(v))
+                    else:
+                        out.append(repr(v))
+            elif any(isinstance(vv,ParseResults) for vv in self):
+                v = self
+                for i,vv in enumerate(v):
+                    if isinstance(vv,ParseResults):
+                        out.append("\n%s%s[%d]:\n%s%s%s" % (indent,('  '*(depth)),i,indent,('  '*(depth+1)),vv.dump(indent,depth+1) ))
+                    else:
+                        out.append("\n%s%s[%d]:\n%s%s%s" % (indent,('  '*(depth)),i,indent,('  '*(depth+1)),_ustr(vv)))
+            
+        return "".join(out)
+
+    def pprint(self, *args, **kwargs):
+        """
+        Pretty-printer for parsed results as a list, using the C{pprint} module.
+        Accepts additional positional or keyword args as defined for the 
+        C{pprint.pprint} method. (U{http://docs.python.org/3/library/pprint.html#pprint.pprint})
+
+        Example::
+            ident = Word(alphas, alphanums)
+            num = Word(nums)
+            func = Forward()
+            term = ident | num | Group('(' + func + ')')
+            func <<= ident + Group(Optional(delimitedList(term)))
+            result = func.parseString("fna a,b,(fnb c,d,200),100")
+            result.pprint(width=40)
+        prints::
+            ['fna',
+             ['a',
+              'b',
+              ['(', 'fnb', ['c', 'd', '200'], ')'],
+              '100']]
+        """
+        pprint.pprint(self.asList(), *args, **kwargs)
+
+    # add support for pickle protocol
+    def __getstate__(self):
+        return ( self.__toklist,
+                 ( self.__tokdict.copy(),
+                   self.__parent is not None and self.__parent() or None,
+                   self.__accumNames,
+                   self.__name ) )
+
+    def __setstate__(self,state):
+        self.__toklist = state[0]
+        (self.__tokdict,
+         par,
+         inAccumNames,
+         self.__name) = state[1]
+        self.__accumNames = {}
+        self.__accumNames.update(inAccumNames)
+        if par is not None:
+            self.__parent = wkref(par)
+        else:
+            self.__parent = None
+
+    def __getnewargs__(self):
+        return self.__toklist, self.__name, self.__asList, self.__modal
+
+    def __dir__(self):
+        return (dir(type(self)) + list(self.keys()))
+
+MutableMapping.register(ParseResults)
+
+def col (loc,strg):
+    """Returns current column within a string, counting newlines as line separators.
+   The first column is number 1.
+
+   Note: the default parsing behavior is to expand tabs in the input string
+   before starting the parsing process.  See L{I{ParserElement.parseString}<ParserElement.parseString>} for more information
+   on parsing strings containing C{<TAB>}s, and suggested methods to maintain a
+   consistent view of the parsed string, the parse location, and line and column
+   positions within the parsed string.
+   """
+    s = strg
+    return 1 if 0<loc<len(s) and s[loc-1] == '\n' else loc - s.rfind("\n", 0, loc)
+
+def lineno(loc,strg):
+    """Returns current line number within a string, counting newlines as line separators.
+   The first line is number 1.
+
+   Note: the default parsing behavior is to expand tabs in the input string
+   before starting the parsing process.  See L{I{ParserElement.parseString}<ParserElement.parseString>} for more information
+   on parsing strings containing C{<TAB>}s, and suggested methods to maintain a
+   consistent view of the parsed string, the parse location, and line and column
+   positions within the parsed string.
+   """
+    return strg.count("\n",0,loc) + 1
+
+def line( loc, strg ):
+    """Returns the line of text containing loc within a string, counting newlines as line separators.
+       """
+    lastCR = strg.rfind("\n", 0, loc)
+    nextCR = strg.find("\n", loc)
+    if nextCR >= 0:
+        return strg[lastCR+1:nextCR]
+    else:
+        return strg[lastCR+1:]
+
+def _defaultStartDebugAction( instring, loc, expr ):
+    print (("Match " + _ustr(expr) + " at loc " + _ustr(loc) + "(%d,%d)" % ( lineno(loc,instring), col(loc,instring) )))
+
+def _defaultSuccessDebugAction( instring, startloc, endloc, expr, toks ):
+    print ("Matched " + _ustr(expr) + " -> " + str(toks.asList()))
+
+def _defaultExceptionDebugAction( instring, loc, expr, exc ):
+    print ("Exception raised:" + _ustr(exc))
+
+def nullDebugAction(*args):
+    """'Do-nothing' debug action, to suppress debugging output during parsing."""
+    pass
+
+# Only works on Python 3.x - nonlocal is toxic to Python 2 installs
+#~ 'decorator to trim function calls to match the arity of the target'
+#~ def _trim_arity(func, maxargs=3):
+    #~ if func in singleArgBuiltins:
+        #~ return lambda s,l,t: func(t)
+    #~ limit = 0
+    #~ foundArity = False
+    #~ def wrapper(*args):
+        #~ nonlocal limit,foundArity
+        #~ while 1:
+            #~ try:
+                #~ ret = func(*args[limit:])
+                #~ foundArity = True
+                #~ return ret
+            #~ except TypeError:
+                #~ if limit == maxargs or foundArity:
+                    #~ raise
+                #~ limit += 1
+                #~ continue
+    #~ return wrapper
+
+# this version is Python 2.x-3.x cross-compatible
+'decorator to trim function calls to match the arity of the target'
+def _trim_arity(func, maxargs=2):
+    if func in singleArgBuiltins:
+        return lambda s,l,t: func(t)
+    limit = [0]
+    foundArity = [False]
+    
+    # traceback return data structure changed in Py3.5 - normalize back to plain tuples
+    if system_version[:2] >= (3,5):
+        def extract_stack(limit=0):
+            # special handling for Python 3.5.0 - extra deep call stack by 1
+            offset = -3 if system_version == (3,5,0) else -2
+            frame_summary = traceback.extract_stack(limit=-offset+limit-1)[offset]
+            return [frame_summary[:2]]
+        def extract_tb(tb, limit=0):
+            frames = traceback.extract_tb(tb, limit=limit)
+            frame_summary = frames[-1]
+            return [frame_summary[:2]]
+    else:
+        extract_stack = traceback.extract_stack
+        extract_tb = traceback.extract_tb
+    
+    # synthesize what would be returned by traceback.extract_stack at the call to 
+    # user's parse action 'func', so that we don't incur call penalty at parse time
+    
+    LINE_DIFF = 6
+    # IF ANY CODE CHANGES, EVEN JUST COMMENTS OR BLANK LINES, BETWEEN THE NEXT LINE AND 
+    # THE CALL TO FUNC INSIDE WRAPPER, LINE_DIFF MUST BE MODIFIED!!!!
+    this_line = extract_stack(limit=2)[-1]
+    pa_call_line_synth = (this_line[0], this_line[1]+LINE_DIFF)
+
+    def wrapper(*args):
+        while 1:
+            try:
+                ret = func(*args[limit[0]:])
+                foundArity[0] = True
+                return ret
+            except TypeError:
+                # re-raise TypeErrors if they did not come from our arity testing
+                if foundArity[0]:
+                    raise
+                else:
+                    try:
+                        tb = sys.exc_info()[-1]
+                        if not extract_tb(tb, limit=2)[-1][:2] == pa_call_line_synth:
+                            raise
+                    finally:
+                        del tb
+
+                if limit[0] <= maxargs:
+                    limit[0] += 1
+                    continue
+                raise
+
+    # copy func name to wrapper for sensible debug output
+    func_name = "<parse action>"
+    try:
+        func_name = getattr(func, '__name__', 
+                            getattr(func, '__class__').__name__)
+    except Exception:
+        func_name = str(func)
+    wrapper.__name__ = func_name
+
+    return wrapper
+
+class ParserElement(object):
+    """Abstract base level parser element class."""
+    DEFAULT_WHITE_CHARS = " \n\t\r"
+    verbose_stacktrace = False
+
+    @staticmethod
+    def setDefaultWhitespaceChars( chars ):
+        r"""
+        Overrides the default whitespace chars
+
+        Example::
+            # default whitespace chars are space, <TAB> and newline
+            OneOrMore(Word(alphas)).parseString("abc def\nghi jkl")  # -> ['abc', 'def', 'ghi', 'jkl']
+            
+            # change to just treat newline as significant
+            ParserElement.setDefaultWhitespaceChars(" \t")
+            OneOrMore(Word(alphas)).parseString("abc def\nghi jkl")  # -> ['abc', 'def']
+        """
+        ParserElement.DEFAULT_WHITE_CHARS = chars
+
+    @staticmethod
+    def inlineLiteralsUsing(cls):
+        """
+        Set class to be used for inclusion of string literals into a parser.
+        
+        Example::
+            # default literal class used is Literal
+            integer = Word(nums)
+            date_str = integer("year") + '/' + integer("month") + '/' + integer("day")           
+
+            date_str.parseString("1999/12/31")  # -> ['1999', '/', '12', '/', '31']
+
+
+            # change to Suppress
+            ParserElement.inlineLiteralsUsing(Suppress)
+            date_str = integer("year") + '/' + integer("month") + '/' + integer("day")           
+
+            date_str.parseString("1999/12/31")  # -> ['1999', '12', '31']
+        """
+        ParserElement._literalStringClass = cls
+
+    def __init__( self, savelist=False ):
+        self.parseAction = list()
+        self.failAction = None
+        #~ self.name = "<unknown>"  # don't define self.name, let subclasses try/except upcall
+        self.strRepr = None
+        self.resultsName = None
+        self.saveAsList = savelist
+        self.skipWhitespace = True
+        self.whiteChars = ParserElement.DEFAULT_WHITE_CHARS
+        self.copyDefaultWhiteChars = True
+        self.mayReturnEmpty = False # used when checking for left-recursion
+        self.keepTabs = False
+        self.ignoreExprs = list()
+        self.debug = False
+        self.streamlined = False
+        self.mayIndexError = True # used to optimize exception handling for subclasses that don't advance parse index
+        self.errmsg = ""
+        self.modalResults = True # used to mark results names as modal (report only last) or cumulative (list all)
+        self.debugActions = ( None, None, None ) #custom debug actions
+        self.re = None
+        self.callPreparse = True # used to avoid redundant calls to preParse
+        self.callDuringTry = False
+
+    def copy( self ):
+        """
+        Make a copy of this C{ParserElement}.  Useful for defining different parse actions
+        for the same parsing pattern, using copies of the original parse element.
+        
+        Example::
+            integer = Word(nums).setParseAction(lambda toks: int(toks[0]))
+            integerK = integer.copy().addParseAction(lambda toks: toks[0]*1024) + Suppress("K")
+            integerM = integer.copy().addParseAction(lambda toks: toks[0]*1024*1024) + Suppress("M")
+            
+            print(OneOrMore(integerK | integerM | integer).parseString("5K 100 640K 256M"))
+        prints::
+            [5120, 100, 655360, 268435456]
+        Equivalent form of C{expr.copy()} is just C{expr()}::
+            integerM = integer().addParseAction(lambda toks: toks[0]*1024*1024) + Suppress("M")
+        """
+        cpy = copy.copy( self )
+        cpy.parseAction = self.parseAction[:]
+        cpy.ignoreExprs = self.ignoreExprs[:]
+        if self.copyDefaultWhiteChars:
+            cpy.whiteChars = ParserElement.DEFAULT_WHITE_CHARS
+        return cpy
+
+    def setName( self, name ):
+        """
+        Define name for this expression, makes debugging and exception messages clearer.
+        
+        Example::
+            Word(nums).parseString("ABC")  # -> Exception: Expected W:(0123...) (at char 0), (line:1, col:1)
+            Word(nums).setName("integer").parseString("ABC")  # -> Exception: Expected integer (at char 0), (line:1, col:1)
+        """
+        self.name = name
+        self.errmsg = "Expected " + self.name
+        if hasattr(self,"exception"):
+            self.exception.msg = self.errmsg
+        return self
+
+    def setResultsName( self, name, listAllMatches=False ):
+        """
+        Define name for referencing matching tokens as a nested attribute
+        of the returned parse results.
+        NOTE: this returns a *copy* of the original C{ParserElement} object;
+        this is so that the client can define a basic element, such as an
+        integer, and reference it in multiple places with different names.
+
+        You can also set results names using the abbreviated syntax,
+        C{expr("name")} in place of C{expr.setResultsName("name")} - 
+        see L{I{__call__}<__call__>}.
+
+        Example::
+            date_str = (integer.setResultsName("year") + '/' 
+                        + integer.setResultsName("month") + '/' 
+                        + integer.setResultsName("day"))
+
+            # equivalent form:
+            date_str = integer("year") + '/' + integer("month") + '/' + integer("day")
+        """
+        newself = self.copy()
+        if name.endswith("*"):
+            name = name[:-1]
+            listAllMatches=True
+        newself.resultsName = name
+        newself.modalResults = not listAllMatches
+        return newself
+
+    def setBreak(self,breakFlag = True):
+        """Method to invoke the Python pdb debugger when this element is
+           about to be parsed. Set C{breakFlag} to True to enable, False to
+           disable.
+        """
+        if breakFlag:
+            _parseMethod = self._parse
+            def breaker(instring, loc, doActions=True, callPreParse=True):
+                import pdb
+                pdb.set_trace()
+                return _parseMethod( instring, loc, doActions, callPreParse )
+            breaker._originalParseMethod = _parseMethod
+            self._parse = breaker
+        else:
+            if hasattr(self._parse,"_originalParseMethod"):
+                self._parse = self._parse._originalParseMethod
+        return self
+
+    def setParseAction( self, *fns, **kwargs ):
+        """
+        Define one or more actions to perform when successfully matching parse element definition.
+        Parse action fn is a callable method with 0-3 arguments, called as C{fn(s,loc,toks)},
+        C{fn(loc,toks)}, C{fn(toks)}, or just C{fn()}, where:
+         - s   = the original string being parsed (see note below)
+         - loc = the location of the matching substring
+         - toks = a list of the matched tokens, packaged as a C{L{ParseResults}} object
+        If the functions in fns modify the tokens, they can return them as the return
+        value from fn, and the modified list of tokens will replace the original.
+        Otherwise, fn does not need to return any value.
+
+        Optional keyword arguments:
+         - callDuringTry = (default=C{False}) indicate if parse action should be run during lookaheads and alternate testing
+
+        Note: the default parsing behavior is to expand tabs in the input string
+        before starting the parsing process.  See L{I{parseString}<parseString>} for more information
+        on parsing strings containing C{<TAB>}s, and suggested methods to maintain a
+        consistent view of the parsed string, the parse location, and line and column
+        positions within the parsed string.
+        
+        Example::
+            integer = Word(nums)
+            date_str = integer + '/' + integer + '/' + integer
+
+            date_str.parseString("1999/12/31")  # -> ['1999', '/', '12', '/', '31']
+
+            # use parse action to convert to ints at parse time
+            integer = Word(nums).setParseAction(lambda toks: int(toks[0]))
+            date_str = integer + '/' + integer + '/' + integer
+
+            # note that integer fields are now ints, not strings
+            date_str.parseString("1999/12/31")  # -> [1999, '/', 12, '/', 31]
+        """
+        self.parseAction = list(map(_trim_arity, list(fns)))
+        self.callDuringTry = kwargs.get("callDuringTry", False)
+        return self
+
+    def addParseAction( self, *fns, **kwargs ):
+        """
+        Add one or more parse actions to expression's list of parse actions. See L{I{setParseAction}<setParseAction>}.
+        
+        See examples in L{I{copy}<copy>}.
+        """
+        self.parseAction += list(map(_trim_arity, list(fns)))
+        self.callDuringTry = self.callDuringTry or kwargs.get("callDuringTry", False)
+        return self
+
+    def addCondition(self, *fns, **kwargs):
+        """Add a boolean predicate function to expression's list of parse actions. See 
+        L{I{setParseAction}<setParseAction>} for function call signatures. Unlike C{setParseAction}, 
+        functions passed to C{addCondition} need to return boolean success/fail of the condition.
+
+        Optional keyword arguments:
+         - message = define a custom message to be used in the raised exception
+         - fatal   = if True, will raise ParseFatalException to stop parsing immediately; otherwise will raise ParseException
+         
+        Example::
+            integer = Word(nums).setParseAction(lambda toks: int(toks[0]))
+            year_int = integer.copy()
+            year_int.addCondition(lambda toks: toks[0] >= 2000, message="Only support years 2000 and later")
+            date_str = year_int + '/' + integer + '/' + integer
+
+            result = date_str.parseString("1999/12/31")  # -> Exception: Only support years 2000 and later (at char 0), (line:1, col:1)
+        """
+        msg = kwargs.get("message", "failed user-defined condition")
+        exc_type = ParseFatalException if kwargs.get("fatal", False) else ParseException
+        for fn in fns:
+            def pa(s,l,t):
+                if not bool(_trim_arity(fn)(s,l,t)):
+                    raise exc_type(s,l,msg)
+            self.parseAction.append(pa)
+        self.callDuringTry = self.callDuringTry or kwargs.get("callDuringTry", False)
+        return self
+
+    def setFailAction( self, fn ):
+        """Define action to perform if parsing fails at this expression.
+           Fail acton fn is a callable function that takes the arguments
+           C{fn(s,loc,expr,err)} where:
+            - s = string being parsed
+            - loc = location where expression match was attempted and failed
+            - expr = the parse expression that failed
+            - err = the exception thrown
+           The function returns no value.  It may throw C{L{ParseFatalException}}
+           if it is desired to stop parsing immediately."""
+        self.failAction = fn
+        return self
+
+    def _skipIgnorables( self, instring, loc ):
+        exprsFound = True
+        while exprsFound:
+            exprsFound = False
+            for e in self.ignoreExprs:
+                try:
+                    while 1:
+                        loc,dummy = e._parse( instring, loc )
+                        exprsFound = True
+                except ParseException:
+                    pass
+        return loc
+
+    def preParse( self, instring, loc ):
+        if self.ignoreExprs:
+            loc = self._skipIgnorables( instring, loc )
+
+        if self.skipWhitespace:
+            wt = self.whiteChars
+            instrlen = len(instring)
+            while loc < instrlen and instring[loc] in wt:
+                loc += 1
+
+        return loc
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        return loc, []
+
+    def postParse( self, instring, loc, tokenlist ):
+        return tokenlist
+
+    #~ @profile
+    def _parseNoCache( self, instring, loc, doActions=True, callPreParse=True ):
+        debugging = ( self.debug ) #and doActions )
+
+        if debugging or self.failAction:
+            #~ print ("Match",self,"at loc",loc,"(%d,%d)" % ( lineno(loc,instring), col(loc,instring) ))
+            if (self.debugActions[0] ):
+                self.debugActions[0]( instring, loc, self )
+            if callPreParse and self.callPreparse:
+                preloc = self.preParse( instring, loc )
+            else:
+                preloc = loc
+            tokensStart = preloc
+            try:
+                try:
+                    loc,tokens = self.parseImpl( instring, preloc, doActions )
+                except IndexError:
+                    raise ParseException( instring, len(instring), self.errmsg, self )
+            except ParseBaseException as err:
+                #~ print ("Exception raised:", err)
+                if self.debugActions[2]:
+                    self.debugActions[2]( instring, tokensStart, self, err )
+                if self.failAction:
+                    self.failAction( instring, tokensStart, self, err )
+                raise
+        else:
+            if callPreParse and self.callPreparse:
+                preloc = self.preParse( instring, loc )
+            else:
+                preloc = loc
+            tokensStart = preloc
+            if self.mayIndexError or preloc >= len(instring):
+                try:
+                    loc,tokens = self.parseImpl( instring, preloc, doActions )
+                except IndexError:
+                    raise ParseException( instring, len(instring), self.errmsg, self )
+            else:
+                loc,tokens = self.parseImpl( instring, preloc, doActions )
+
+        tokens = self.postParse( instring, loc, tokens )
+
+        retTokens = ParseResults( tokens, self.resultsName, asList=self.saveAsList, modal=self.modalResults )
+        if self.parseAction and (doActions or self.callDuringTry):
+            if debugging:
+                try:
+                    for fn in self.parseAction:
+                        tokens = fn( instring, tokensStart, retTokens )
+                        if tokens is not None:
+                            retTokens = ParseResults( tokens,
+                                                      self.resultsName,
+                                                      asList=self.saveAsList and isinstance(tokens,(ParseResults,list)),
+                                                      modal=self.modalResults )
+                except ParseBaseException as err:
+                    #~ print "Exception raised in user parse action:", err
+                    if (self.debugActions[2] ):
+                        self.debugActions[2]( instring, tokensStart, self, err )
+                    raise
+            else:
+                for fn in self.parseAction:
+                    tokens = fn( instring, tokensStart, retTokens )
+                    if tokens is not None:
+                        retTokens = ParseResults( tokens,
+                                                  self.resultsName,
+                                                  asList=self.saveAsList and isinstance(tokens,(ParseResults,list)),
+                                                  modal=self.modalResults )
+        if debugging:
+            #~ print ("Matched",self,"->",retTokens.asList())
+            if (self.debugActions[1] ):
+                self.debugActions[1]( instring, tokensStart, loc, self, retTokens )
+
+        return loc, retTokens
+
+    def tryParse( self, instring, loc ):
+        try:
+            return self._parse( instring, loc, doActions=False )[0]
+        except ParseFatalException:
+            raise ParseException( instring, loc, self.errmsg, self)
+    
+    def canParseNext(self, instring, loc):
+        try:
+            self.tryParse(instring, loc)
+        except (ParseException, IndexError):
+            return False
+        else:
+            return True
+
+    class _UnboundedCache(object):
+        def __init__(self):
+            cache = {}
+            self.not_in_cache = not_in_cache = object()
+
+            def get(self, key):
+                return cache.get(key, not_in_cache)
+
+            def set(self, key, value):
+                cache[key] = value
+
+            def clear(self):
+                cache.clear()
+                
+            def cache_len(self):
+                return len(cache)
+
+            self.get = types.MethodType(get, self)
+            self.set = types.MethodType(set, self)
+            self.clear = types.MethodType(clear, self)
+            self.__len__ = types.MethodType(cache_len, self)
+
+    if _OrderedDict is not None:
+        class _FifoCache(object):
+            def __init__(self, size):
+                self.not_in_cache = not_in_cache = object()
+
+                cache = _OrderedDict()
+
+                def get(self, key):
+                    return cache.get(key, not_in_cache)
+
+                def set(self, key, value):
+                    cache[key] = value
+                    while len(cache) > size:
+                        try:
+                            cache.popitem(False)
+                        except KeyError:
+                            pass
+
+                def clear(self):
+                    cache.clear()
+
+                def cache_len(self):
+                    return len(cache)
+
+                self.get = types.MethodType(get, self)
+                self.set = types.MethodType(set, self)
+                self.clear = types.MethodType(clear, self)
+                self.__len__ = types.MethodType(cache_len, self)
+
+    else:
+        class _FifoCache(object):
+            def __init__(self, size):
+                self.not_in_cache = not_in_cache = object()
+
+                cache = {}
+                key_fifo = collections.deque([], size)
+
+                def get(self, key):
+                    return cache.get(key, not_in_cache)
+
+                def set(self, key, value):
+                    cache[key] = value
+                    while len(key_fifo) > size:
+                        cache.pop(key_fifo.popleft(), None)
+                    key_fifo.append(key)
+
+                def clear(self):
+                    cache.clear()
+                    key_fifo.clear()
+
+                def cache_len(self):
+                    return len(cache)
+
+                self.get = types.MethodType(get, self)
+                self.set = types.MethodType(set, self)
+                self.clear = types.MethodType(clear, self)
+                self.__len__ = types.MethodType(cache_len, self)
+
+    # argument cache for optimizing repeated calls when backtracking through recursive expressions
+    packrat_cache = {} # this is set later by enabledPackrat(); this is here so that resetCache() doesn't fail
+    packrat_cache_lock = RLock()
+    packrat_cache_stats = [0, 0]
+
+    # this method gets repeatedly called during backtracking with the same arguments -
+    # we can cache these arguments and save ourselves the trouble of re-parsing the contained expression
+    def _parseCache( self, instring, loc, doActions=True, callPreParse=True ):
+        HIT, MISS = 0, 1
+        lookup = (self, instring, loc, callPreParse, doActions)
+        with ParserElement.packrat_cache_lock:
+            cache = ParserElement.packrat_cache
+            value = cache.get(lookup)
+            if value is cache.not_in_cache:
+                ParserElement.packrat_cache_stats[MISS] += 1
+                try:
+                    value = self._parseNoCache(instring, loc, doActions, callPreParse)
+                except ParseBaseException as pe:
+                    # cache a copy of the exception, without the traceback
+                    cache.set(lookup, pe.__class__(*pe.args))
+                    raise
+                else:
+                    cache.set(lookup, (value[0], value[1].copy()))
+                    return value
+            else:
+                ParserElement.packrat_cache_stats[HIT] += 1
+                if isinstance(value, Exception):
+                    raise value
+                return (value[0], value[1].copy())
+
+    _parse = _parseNoCache
+
+    @staticmethod
+    def resetCache():
+        ParserElement.packrat_cache.clear()
+        ParserElement.packrat_cache_stats[:] = [0] * len(ParserElement.packrat_cache_stats)
+
+    _packratEnabled = False
+    @staticmethod
+    def enablePackrat(cache_size_limit=128):
+        """Enables "packrat" parsing, which adds memoizing to the parsing logic.
+           Repeated parse attempts at the same string location (which happens
+           often in many complex grammars) can immediately return a cached value,
+           instead of re-executing parsing/validating code.  Memoizing is done of
+           both valid results and parsing exceptions.
+           
+           Parameters:
+            - cache_size_limit - (default=C{128}) - if an integer value is provided
+              will limit the size of the packrat cache; if None is passed, then
+              the cache size will be unbounded; if 0 is passed, the cache will
+              be effectively disabled.
+            
+           This speedup may break existing programs that use parse actions that
+           have side-effects.  For this reason, packrat parsing is disabled when
+           you first import pyparsing.  To activate the packrat feature, your
+           program must call the class method C{ParserElement.enablePackrat()}.  If
+           your program uses C{psyco} to "compile as you go", you must call
+           C{enablePackrat} before calling C{psyco.full()}.  If you do not do this,
+           Python will crash.  For best results, call C{enablePackrat()} immediately
+           after importing pyparsing.
+           
+           Example::
+               import pyparsing
+               pyparsing.ParserElement.enablePackrat()
+        """
+        if not ParserElement._packratEnabled:
+            ParserElement._packratEnabled = True
+            if cache_size_limit is None:
+                ParserElement.packrat_cache = ParserElement._UnboundedCache()
+            else:
+                ParserElement.packrat_cache = ParserElement._FifoCache(cache_size_limit)
+            ParserElement._parse = ParserElement._parseCache
+
+    def parseString( self, instring, parseAll=False ):
+        """
+        Execute the parse expression with the given string.
+        This is the main interface to the client code, once the complete
+        expression has been built.
+
+        If you want the grammar to require that the entire input string be
+        successfully parsed, then set C{parseAll} to True (equivalent to ending
+        the grammar with C{L{StringEnd()}}).
+
+        Note: C{parseString} implicitly calls C{expandtabs()} on the input string,
+        in order to report proper column numbers in parse actions.
+        If the input string contains tabs and
+        the grammar uses parse actions that use the C{loc} argument to index into the
+        string being parsed, you can ensure you have a consistent view of the input
+        string by:
+         - calling C{parseWithTabs} on your grammar before calling C{parseString}
+           (see L{I{parseWithTabs}<parseWithTabs>})
+         - define your parse action using the full C{(s,loc,toks)} signature, and
+           reference the input string using the parse action's C{s} argument
+         - explictly expand the tabs in your input string before calling
+           C{parseString}
+        
+        Example::
+            Word('a').parseString('aaaaabaaa')  # -> ['aaaaa']
+            Word('a').parseString('aaaaabaaa', parseAll=True)  # -> Exception: Expected end of text
+        """
+        ParserElement.resetCache()
+        if not self.streamlined:
+            self.streamline()
+            #~ self.saveAsList = True
+        for e in self.ignoreExprs:
+            e.streamline()
+        if not self.keepTabs:
+            instring = instring.expandtabs()
+        try:
+            loc, tokens = self._parse( instring, 0 )
+            if parseAll:
+                loc = self.preParse( instring, loc )
+                se = Empty() + StringEnd()
+                se._parse( instring, loc )
+        except ParseBaseException as exc:
+            if ParserElement.verbose_stacktrace:
+                raise
+            else:
+                # catch and re-raise exception from here, clears out pyparsing internal stack trace
+                raise exc
+        else:
+            return tokens
+
+    def scanString( self, instring, maxMatches=_MAX_INT, overlap=False ):
+        """
+        Scan the input string for expression matches.  Each match will return the
+        matching tokens, start location, and end location.  May be called with optional
+        C{maxMatches} argument, to clip scanning after 'n' matches are found.  If
+        C{overlap} is specified, then overlapping matches will be reported.
+
+        Note that the start and end locations are reported relative to the string
+        being parsed.  See L{I{parseString}<parseString>} for more information on parsing
+        strings with embedded tabs.
+
+        Example::
+            source = "sldjf123lsdjjkf345sldkjf879lkjsfd987"
+            print(source)
+            for tokens,start,end in Word(alphas).scanString(source):
+                print(' '*start + '^'*(end-start))
+                print(' '*start + tokens[0])
+        
+        prints::
+        
+            sldjf123lsdjjkf345sldkjf879lkjsfd987
+            ^^^^^
+            sldjf
+                    ^^^^^^^
+                    lsdjjkf
+                              ^^^^^^
+                              sldkjf
+                                       ^^^^^^
+                                       lkjsfd
+        """
+        if not self.streamlined:
+            self.streamline()
+        for e in self.ignoreExprs:
+            e.streamline()
+
+        if not self.keepTabs:
+            instring = _ustr(instring).expandtabs()
+        instrlen = len(instring)
+        loc = 0
+        preparseFn = self.preParse
+        parseFn = self._parse
+        ParserElement.resetCache()
+        matches = 0
+        try:
+            while loc <= instrlen and matches < maxMatches:
+                try:
+                    preloc = preparseFn( instring, loc )
+                    nextLoc,tokens = parseFn( instring, preloc, callPreParse=False )
+                except ParseException:
+                    loc = preloc+1
+                else:
+                    if nextLoc > loc:
+                        matches += 1
+                        yield tokens, preloc, nextLoc
+                        if overlap:
+                            nextloc = preparseFn( instring, loc )
+                            if nextloc > loc:
+                                loc = nextLoc
+                            else:
+                                loc += 1
+                        else:
+                            loc = nextLoc
+                    else:
+                        loc = preloc+1
+        except ParseBaseException as exc:
+            if ParserElement.verbose_stacktrace:
+                raise
+            else:
+                # catch and re-raise exception from here, clears out pyparsing internal stack trace
+                raise exc
+
+    def transformString( self, instring ):
+        """
+        Extension to C{L{scanString}}, to modify matching text with modified tokens that may
+        be returned from a parse action.  To use C{transformString}, define a grammar and
+        attach a parse action to it that modifies the returned token list.
+        Invoking C{transformString()} on a target string will then scan for matches,
+        and replace the matched text patterns according to the logic in the parse
+        action.  C{transformString()} returns the resulting transformed string.
+        
+        Example::
+            wd = Word(alphas)
+            wd.setParseAction(lambda toks: toks[0].title())
+            
+            print(wd.transformString("now is the winter of our discontent made glorious summer by this sun of york."))
+        Prints::
+            Now Is The Winter Of Our Discontent Made Glorious Summer By This Sun Of York.
+        """
+        out = []
+        lastE = 0
+        # force preservation of <TAB>s, to minimize unwanted transformation of string, and to
+        # keep string locs straight between transformString and scanString
+        self.keepTabs = True
+        try:
+            for t,s,e in self.scanString( instring ):
+                out.append( instring[lastE:s] )
+                if t:
+                    if isinstance(t,ParseResults):
+                        out += t.asList()
+                    elif isinstance(t,list):
+                        out += t
+                    else:
+                        out.append(t)
+                lastE = e
+            out.append(instring[lastE:])
+            out = [o for o in out if o]
+            return "".join(map(_ustr,_flatten(out)))
+        except ParseBaseException as exc:
+            if ParserElement.verbose_stacktrace:
+                raise
+            else:
+                # catch and re-raise exception from here, clears out pyparsing internal stack trace
+                raise exc
+
+    def searchString( self, instring, maxMatches=_MAX_INT ):
+        """
+        Another extension to C{L{scanString}}, simplifying the access to the tokens found
+        to match the given parse expression.  May be called with optional
+        C{maxMatches} argument, to clip searching after 'n' matches are found.
+        
+        Example::
+            # a capitalized word starts with an uppercase letter, followed by zero or more lowercase letters
+            cap_word = Word(alphas.upper(), alphas.lower())
+            
+            print(cap_word.searchString("More than Iron, more than Lead, more than Gold I need Electricity"))
+
+            # the sum() builtin can be used to merge results into a single ParseResults object
+            print(sum(cap_word.searchString("More than Iron, more than Lead, more than Gold I need Electricity")))
+        prints::
+            [['More'], ['Iron'], ['Lead'], ['Gold'], ['I'], ['Electricity']]
+            ['More', 'Iron', 'Lead', 'Gold', 'I', 'Electricity']
+        """
+        try:
+            return ParseResults([ t for t,s,e in self.scanString( instring, maxMatches ) ])
+        except ParseBaseException as exc:
+            if ParserElement.verbose_stacktrace:
+                raise
+            else:
+                # catch and re-raise exception from here, clears out pyparsing internal stack trace
+                raise exc
+
+    def split(self, instring, maxsplit=_MAX_INT, includeSeparators=False):
+        """
+        Generator method to split a string using the given expression as a separator.
+        May be called with optional C{maxsplit} argument, to limit the number of splits;
+        and the optional C{includeSeparators} argument (default=C{False}), if the separating
+        matching text should be included in the split results.
+        
+        Example::        
+            punc = oneOf(list(".,;:/-!?"))
+            print(list(punc.split("This, this?, this sentence, is badly punctuated!")))
+        prints::
+            ['This', ' this', '', ' this sentence', ' is badly punctuated', '']
+        """
+        splits = 0
+        last = 0
+        for t,s,e in self.scanString(instring, maxMatches=maxsplit):
+            yield instring[last:s]
+            if includeSeparators:
+                yield t[0]
+            last = e
+        yield instring[last:]
+
+    def __add__(self, other ):
+        """
+        Implementation of + operator - returns C{L{And}}. Adding strings to a ParserElement
+        converts them to L{Literal}s by default.
+        
+        Example::
+            greet = Word(alphas) + "," + Word(alphas) + "!"
+            hello = "Hello, World!"
+            print (hello, "->", greet.parseString(hello))
+        Prints::
+            Hello, World! -> ['Hello', ',', 'World', '!']
+        """
+        if isinstance( other, basestring ):
+            other = ParserElement._literalStringClass( other )
+        if not isinstance( other, ParserElement ):
+            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
+                    SyntaxWarning, stacklevel=2)
+            return None
+        return And( [ self, other ] )
+
+    def __radd__(self, other ):
+        """
+        Implementation of + operator when left operand is not a C{L{ParserElement}}
+        """
+        if isinstance( other, basestring ):
+            other = ParserElement._literalStringClass( other )
+        if not isinstance( other, ParserElement ):
+            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
+                    SyntaxWarning, stacklevel=2)
+            return None
+        return other + self
+
+    def __sub__(self, other):
+        """
+        Implementation of - operator, returns C{L{And}} with error stop
+        """
+        if isinstance( other, basestring ):
+            other = ParserElement._literalStringClass( other )
+        if not isinstance( other, ParserElement ):
+            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
+                    SyntaxWarning, stacklevel=2)
+            return None
+        return self + And._ErrorStop() + other
+
+    def __rsub__(self, other ):
+        """
+        Implementation of - operator when left operand is not a C{L{ParserElement}}
+        """
+        if isinstance( other, basestring ):
+            other = ParserElement._literalStringClass( other )
+        if not isinstance( other, ParserElement ):
+            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
+                    SyntaxWarning, stacklevel=2)
+            return None
+        return other - self
+
+    def __mul__(self,other):
+        """
+        Implementation of * operator, allows use of C{expr * 3} in place of
+        C{expr + expr + expr}.  Expressions may also me multiplied by a 2-integer
+        tuple, similar to C{{min,max}} multipliers in regular expressions.  Tuples
+        may also include C{None} as in:
+         - C{expr*(n,None)} or C{expr*(n,)} is equivalent
+              to C{expr*n + L{ZeroOrMore}(expr)}
+              (read as "at least n instances of C{expr}")
+         - C{expr*(None,n)} is equivalent to C{expr*(0,n)}
+              (read as "0 to n instances of C{expr}")
+         - C{expr*(None,None)} is equivalent to C{L{ZeroOrMore}(expr)}
+         - C{expr*(1,None)} is equivalent to C{L{OneOrMore}(expr)}
+
+        Note that C{expr*(None,n)} does not raise an exception if
+        more than n exprs exist in the input stream; that is,
+        C{expr*(None,n)} does not enforce a maximum number of expr
+        occurrences.  If this behavior is desired, then write
+        C{expr*(None,n) + ~expr}
+        """
+        if isinstance(other,int):
+            minElements, optElements = other,0
+        elif isinstance(other,tuple):
+            other = (other + (None, None))[:2]
+            if other[0] is None:
+                other = (0, other[1])
+            if isinstance(other[0],int) and other[1] is None:
+                if other[0] == 0:
+                    return ZeroOrMore(self)
+                if other[0] == 1:
+                    return OneOrMore(self)
+                else:
+                    return self*other[0] + ZeroOrMore(self)
+            elif isinstance(other[0],int) and isinstance(other[1],int):
+                minElements, optElements = other
+                optElements -= minElements
+            else:
+                raise TypeError("cannot multiply 'ParserElement' and ('%s','%s') objects", type(other[0]),type(other[1]))
+        else:
+            raise TypeError("cannot multiply 'ParserElement' and '%s' objects", type(other))
+
+        if minElements < 0:
+            raise ValueError("cannot multiply ParserElement by negative value")
+        if optElements < 0:
+            raise ValueError("second tuple value must be greater or equal to first tuple value")
+        if minElements == optElements == 0:
+            raise ValueError("cannot multiply ParserElement by 0 or (0,0)")
+
+        if (optElements):
+            def makeOptionalList(n):
+                if n>1:
+                    return Optional(self + makeOptionalList(n-1))
+                else:
+                    return Optional(self)
+            if minElements:
+                if minElements == 1:
+                    ret = self + makeOptionalList(optElements)
+                else:
+                    ret = And([self]*minElements) + makeOptionalList(optElements)
+            else:
+                ret = makeOptionalList(optElements)
+        else:
+            if minElements == 1:
+                ret = self
+            else:
+                ret = And([self]*minElements)
+        return ret
+
+    def __rmul__(self, other):
+        return self.__mul__(other)
+
+    def __or__(self, other ):
+        """
+        Implementation of | operator - returns C{L{MatchFirst}}
+        """
+        if isinstance( other, basestring ):
+            other = ParserElement._literalStringClass( other )
+        if not isinstance( other, ParserElement ):
+            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
+                    SyntaxWarning, stacklevel=2)
+            return None
+        return MatchFirst( [ self, other ] )
+
+    def __ror__(self, other ):
+        """
+        Implementation of | operator when left operand is not a C{L{ParserElement}}
+        """
+        if isinstance( other, basestring ):
+            other = ParserElement._literalStringClass( other )
+        if not isinstance( other, ParserElement ):
+            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
+                    SyntaxWarning, stacklevel=2)
+            return None
+        return other | self
+
+    def __xor__(self, other ):
+        """
+        Implementation of ^ operator - returns C{L{Or}}
+        """
+        if isinstance( other, basestring ):
+            other = ParserElement._literalStringClass( other )
+        if not isinstance( other, ParserElement ):
+            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
+                    SyntaxWarning, stacklevel=2)
+            return None
+        return Or( [ self, other ] )
+
+    def __rxor__(self, other ):
+        """
+        Implementation of ^ operator when left operand is not a C{L{ParserElement}}
+        """
+        if isinstance( other, basestring ):
+            other = ParserElement._literalStringClass( other )
+        if not isinstance( other, ParserElement ):
+            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
+                    SyntaxWarning, stacklevel=2)
+            return None
+        return other ^ self
+
+    def __and__(self, other ):
+        """
+        Implementation of & operator - returns C{L{Each}}
+        """
+        if isinstance( other, basestring ):
+            other = ParserElement._literalStringClass( other )
+        if not isinstance( other, ParserElement ):
+            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
+                    SyntaxWarning, stacklevel=2)
+            return None
+        return Each( [ self, other ] )
+
+    def __rand__(self, other ):
+        """
+        Implementation of & operator when left operand is not a C{L{ParserElement}}
+        """
+        if isinstance( other, basestring ):
+            other = ParserElement._literalStringClass( other )
+        if not isinstance( other, ParserElement ):
+            warnings.warn("Cannot combine element of type %s with ParserElement" % type(other),
+                    SyntaxWarning, stacklevel=2)
+            return None
+        return other & self
+
+    def __invert__( self ):
+        """
+        Implementation of ~ operator - returns C{L{NotAny}}
+        """
+        return NotAny( self )
+
+    def __call__(self, name=None):
+        """
+        Shortcut for C{L{setResultsName}}, with C{listAllMatches=False}.
+        
+        If C{name} is given with a trailing C{'*'} character, then C{listAllMatches} will be
+        passed as C{True}.
+           
+        If C{name} is omitted, same as calling C{L{copy}}.
+
+        Example::
+            # these are equivalent
+            userdata = Word(alphas).setResultsName("name") + Word(nums+"-").setResultsName("socsecno")
+            userdata = Word(alphas)("name") + Word(nums+"-")("socsecno")             
+        """
+        if name is not None:
+            return self.setResultsName(name)
+        else:
+            return self.copy()
+
+    def suppress( self ):
+        """
+        Suppresses the output of this C{ParserElement}; useful to keep punctuation from
+        cluttering up returned output.
+        """
+        return Suppress( self )
+
+    def leaveWhitespace( self ):
+        """
+        Disables the skipping of whitespace before matching the characters in the
+        C{ParserElement}'s defined pattern.  This is normally only used internally by
+        the pyparsing module, but may be needed in some whitespace-sensitive grammars.
+        """
+        self.skipWhitespace = False
+        return self
+
+    def setWhitespaceChars( self, chars ):
+        """
+        Overrides the default whitespace chars
+        """
+        self.skipWhitespace = True
+        self.whiteChars = chars
+        self.copyDefaultWhiteChars = False
+        return self
+
+    def parseWithTabs( self ):
+        """
+        Overrides default behavior to expand C{<TAB>}s to spaces before parsing the input string.
+        Must be called before C{parseString} when the input grammar contains elements that
+        match C{<TAB>} characters.
+        """
+        self.keepTabs = True
+        return self
+
+    def ignore( self, other ):
+        """
+        Define expression to be ignored (e.g., comments) while doing pattern
+        matching; may be called repeatedly, to define multiple comment or other
+        ignorable patterns.
+        
+        Example::
+            patt = OneOrMore(Word(alphas))
+            patt.parseString('ablaj /* comment */ lskjd') # -> ['ablaj']
+            
+            patt.ignore(cStyleComment)
+            patt.parseString('ablaj /* comment */ lskjd') # -> ['ablaj', 'lskjd']
+        """
+        if isinstance(other, basestring):
+            other = Suppress(other)
+
+        if isinstance( other, Suppress ):
+            if other not in self.ignoreExprs:
+                self.ignoreExprs.append(other)
+        else:
+            self.ignoreExprs.append( Suppress( other.copy() ) )
+        return self
+
+    def setDebugActions( self, startAction, successAction, exceptionAction ):
+        """
+        Enable display of debugging messages while doing pattern matching.
+        """
+        self.debugActions = (startAction or _defaultStartDebugAction,
+                             successAction or _defaultSuccessDebugAction,
+                             exceptionAction or _defaultExceptionDebugAction)
+        self.debug = True
+        return self
+
+    def setDebug( self, flag=True ):
+        """
+        Enable display of debugging messages while doing pattern matching.
+        Set C{flag} to True to enable, False to disable.
+
+        Example::
+            wd = Word(alphas).setName("alphaword")
+            integer = Word(nums).setName("numword")
+            term = wd | integer
+            
+            # turn on debugging for wd
+            wd.setDebug()
+
+            OneOrMore(term).parseString("abc 123 xyz 890")
+        
+        prints::
+            Match alphaword at loc 0(1,1)
+            Matched alphaword -> ['abc']
+            Match alphaword at loc 3(1,4)
+            Exception raised:Expected alphaword (at char 4), (line:1, col:5)
+            Match alphaword at loc 7(1,8)
+            Matched alphaword -> ['xyz']
+            Match alphaword at loc 11(1,12)
+            Exception raised:Expected alphaword (at char 12), (line:1, col:13)
+            Match alphaword at loc 15(1,16)
+            Exception raised:Expected alphaword (at char 15), (line:1, col:16)
+
+        The output shown is that produced by the default debug actions - custom debug actions can be
+        specified using L{setDebugActions}. Prior to attempting
+        to match the C{wd} expression, the debugging message C{"Match <exprname> at loc <n>(<line>,<col>)"}
+        is shown. Then if the parse succeeds, a C{"Matched"} message is shown, or an C{"Exception raised"}
+        message is shown. Also note the use of L{setName} to assign a human-readable name to the expression,
+        which makes debugging and exception messages easier to understand - for instance, the default
+        name created for the C{Word} expression without calling C{setName} is C{"W:(ABCD...)"}.
+        """
+        if flag:
+            self.setDebugActions( _defaultStartDebugAction, _defaultSuccessDebugAction, _defaultExceptionDebugAction )
+        else:
+            self.debug = False
+        return self
+
+    def __str__( self ):
+        return self.name
+
+    def __repr__( self ):
+        return _ustr(self)
+
+    def streamline( self ):
+        self.streamlined = True
+        self.strRepr = None
+        return self
+
+    def checkRecursion( self, parseElementList ):
+        pass
+
+    def validate( self, validateTrace=[] ):
+        """
+        Check defined expressions for valid structure, check for infinite recursive definitions.
+        """
+        self.checkRecursion( [] )
+
+    def parseFile( self, file_or_filename, parseAll=False ):
+        """
+        Execute the parse expression on the given file or filename.
+        If a filename is specified (instead of a file object),
+        the entire file is opened, read, and closed before parsing.
+        """
+        try:
+            file_contents = file_or_filename.read()
+        except AttributeError:
+            with open(file_or_filename, "r") as f:
+                file_contents = f.read()
+        try:
+            return self.parseString(file_contents, parseAll)
+        except ParseBaseException as exc:
+            if ParserElement.verbose_stacktrace:
+                raise
+            else:
+                # catch and re-raise exception from here, clears out pyparsing internal stack trace
+                raise exc
+
+    def __eq__(self,other):
+        if isinstance(other, ParserElement):
+            return self is other or vars(self) == vars(other)
+        elif isinstance(other, basestring):
+            return self.matches(other)
+        else:
+            return super(ParserElement,self)==other
+
+    def __ne__(self,other):
+        return not (self == other)
+
+    def __hash__(self):
+        return hash(id(self))
+
+    def __req__(self,other):
+        return self == other
+
+    def __rne__(self,other):
+        return not (self == other)
+
+    def matches(self, testString, parseAll=True):
+        """
+        Method for quick testing of a parser against a test string. Good for simple 
+        inline microtests of sub expressions while building up larger parser.
+           
+        Parameters:
+         - testString - to test against this expression for a match
+         - parseAll - (default=C{True}) - flag to pass to C{L{parseString}} when running tests
+            
+        Example::
+            expr = Word(nums)
+            assert expr.matches("100")
+        """
+        try:
+            self.parseString(_ustr(testString), parseAll=parseAll)
+            return True
+        except ParseBaseException:
+            return False
+                
+    def runTests(self, tests, parseAll=True, comment='#', fullDump=True, printResults=True, failureTests=False):
+        """
+        Execute the parse expression on a series of test strings, showing each
+        test, the parsed results or where the parse failed. Quick and easy way to
+        run a parse expression against a list of sample strings.
+           
+        Parameters:
+         - tests - a list of separate test strings, or a multiline string of test strings
+         - parseAll - (default=C{True}) - flag to pass to C{L{parseString}} when running tests           
+         - comment - (default=C{'#'}) - expression for indicating embedded comments in the test 
+              string; pass None to disable comment filtering
+         - fullDump - (default=C{True}) - dump results as list followed by results names in nested outline;
+              if False, only dump nested list
+         - printResults - (default=C{True}) prints test output to stdout
+         - failureTests - (default=C{False}) indicates if these tests are expected to fail parsing
+
+        Returns: a (success, results) tuple, where success indicates that all tests succeeded
+        (or failed if C{failureTests} is True), and the results contain a list of lines of each 
+        test's output
+        
+        Example::
+            number_expr = pyparsing_common.number.copy()
+
+            result = number_expr.runTests('''
+                # unsigned integer
+                100
+                # negative integer
+                -100
+                # float with scientific notation
+                6.02e23
+                # integer with scientific notation
+                1e-12
+                ''')
+            print("Success" if result[0] else "Failed!")
+
+            result = number_expr.runTests('''
+                # stray character
+                100Z
+                # missing leading digit before '.'
+                -.100
+                # too many '.'
+                3.14.159
+                ''', failureTests=True)
+            print("Success" if result[0] else "Failed!")
+        prints::
+            # unsigned integer
+            100
+            [100]
+
+            # negative integer
+            -100
+            [-100]
+
+            # float with scientific notation
+            6.02e23
+            [6.02e+23]
+
+            # integer with scientific notation
+            1e-12
+            [1e-12]
+
+            Success
+            
+            # stray character
+            100Z
+               ^
+            FAIL: Expected end of text (at char 3), (line:1, col:4)
+
+            # missing leading digit before '.'
+            -.100
+            ^
+            FAIL: Expected {real number with scientific notation | real number | signed integer} (at char 0), (line:1, col:1)
+
+            # too many '.'
+            3.14.159
+                ^
+            FAIL: Expected end of text (at char 4), (line:1, col:5)
+
+            Success
+
+        Each test string must be on a single line. If you want to test a string that spans multiple
+        lines, create a test like this::
+
+            expr.runTest(r"this is a test\\n of strings that spans \\n 3 lines")
+        
+        (Note that this is a raw string literal, you must include the leading 'r'.)
+        """
+        if isinstance(tests, basestring):
+            tests = list(map(str.strip, tests.rstrip().splitlines()))
+        if isinstance(comment, basestring):
+            comment = Literal(comment)
+        allResults = []
+        comments = []
+        success = True
+        for t in tests:
+            if comment is not None and comment.matches(t, False) or comments and not t:
+                comments.append(t)
+                continue
+            if not t:
+                continue
+            out = ['\n'.join(comments), t]
+            comments = []
+            try:
+                t = t.replace(r'\n','\n')
+                result = self.parseString(t, parseAll=parseAll)
+                out.append(result.dump(full=fullDump))
+                success = success and not failureTests
+            except ParseBaseException as pe:
+                fatal = "(FATAL)" if isinstance(pe, ParseFatalException) else ""
+                if '\n' in t:
+                    out.append(line(pe.loc, t))
+                    out.append(' '*(col(pe.loc,t)-1) + '^' + fatal)
+                else:
+                    out.append(' '*pe.loc + '^' + fatal)
+                out.append("FAIL: " + str(pe))
+                success = success and failureTests
+                result = pe
+            except Exception as exc:
+                out.append("FAIL-EXCEPTION: " + str(exc))
+                success = success and failureTests
+                result = exc
+
+            if printResults:
+                if fullDump:
+                    out.append('')
+                print('\n'.join(out))
+
+            allResults.append((t, result))
+        
+        return success, allResults
+
+        
+class Token(ParserElement):
+    """
+    Abstract C{ParserElement} subclass, for defining atomic matching patterns.
+    """
+    def __init__( self ):
+        super(Token,self).__init__( savelist=False )
+
+
+class Empty(Token):
+    """
+    An empty token, will always match.
+    """
+    def __init__( self ):
+        super(Empty,self).__init__()
+        self.name = "Empty"
+        self.mayReturnEmpty = True
+        self.mayIndexError = False
+
+
+class NoMatch(Token):
+    """
+    A token that will never match.
+    """
+    def __init__( self ):
+        super(NoMatch,self).__init__()
+        self.name = "NoMatch"
+        self.mayReturnEmpty = True
+        self.mayIndexError = False
+        self.errmsg = "Unmatchable token"
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        raise ParseException(instring, loc, self.errmsg, self)
+
+
+class Literal(Token):
+    """
+    Token to exactly match a specified string.
+    
+    Example::
+        Literal('blah').parseString('blah')  # -> ['blah']
+        Literal('blah').parseString('blahfooblah')  # -> ['blah']
+        Literal('blah').parseString('bla')  # -> Exception: Expected "blah"
+    
+    For case-insensitive matching, use L{CaselessLiteral}.
+    
+    For keyword matching (force word break before and after the matched string),
+    use L{Keyword} or L{CaselessKeyword}.
+    """
+    def __init__( self, matchString ):
+        super(Literal,self).__init__()
+        self.match = matchString
+        self.matchLen = len(matchString)
+        try:
+            self.firstMatchChar = matchString[0]
+        except IndexError:
+            warnings.warn("null string passed to Literal; use Empty() instead",
+                            SyntaxWarning, stacklevel=2)
+            self.__class__ = Empty
+        self.name = '"%s"' % _ustr(self.match)
+        self.errmsg = "Expected " + self.name
+        self.mayReturnEmpty = False
+        self.mayIndexError = False
+
+    # Performance tuning: this routine gets called a *lot*
+    # if this is a single character match string  and the first character matches,
+    # short-circuit as quickly as possible, and avoid calling startswith
+    #~ @profile
+    def parseImpl( self, instring, loc, doActions=True ):
+        if (instring[loc] == self.firstMatchChar and
+            (self.matchLen==1 or instring.startswith(self.match,loc)) ):
+            return loc+self.matchLen, self.match
+        raise ParseException(instring, loc, self.errmsg, self)
+_L = Literal
+ParserElement._literalStringClass = Literal
+
+class Keyword(Token):
+    """
+    Token to exactly match a specified string as a keyword, that is, it must be
+    immediately followed by a non-keyword character.  Compare with C{L{Literal}}:
+     - C{Literal("if")} will match the leading C{'if'} in C{'ifAndOnlyIf'}.
+     - C{Keyword("if")} will not; it will only match the leading C{'if'} in C{'if x=1'}, or C{'if(y==2)'}
+    Accepts two optional constructor arguments in addition to the keyword string:
+     - C{identChars} is a string of characters that would be valid identifier characters,
+          defaulting to all alphanumerics + "_" and "$"
+     - C{caseless} allows case-insensitive matching, default is C{False}.
+       
+    Example::
+        Keyword("start").parseString("start")  # -> ['start']
+        Keyword("start").parseString("starting")  # -> Exception
+
+    For case-insensitive matching, use L{CaselessKeyword}.
+    """
+    DEFAULT_KEYWORD_CHARS = alphanums+"_$"
+
+    def __init__( self, matchString, identChars=None, caseless=False ):
+        super(Keyword,self).__init__()
+        if identChars is None:
+            identChars = Keyword.DEFAULT_KEYWORD_CHARS
+        self.match = matchString
+        self.matchLen = len(matchString)
+        try:
+            self.firstMatchChar = matchString[0]
+        except IndexError:
+            warnings.warn("null string passed to Keyword; use Empty() instead",
+                            SyntaxWarning, stacklevel=2)
+        self.name = '"%s"' % self.match
+        self.errmsg = "Expected " + self.name
+        self.mayReturnEmpty = False
+        self.mayIndexError = False
+        self.caseless = caseless
+        if caseless:
+            self.caselessmatch = matchString.upper()
+            identChars = identChars.upper()
+        self.identChars = set(identChars)
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        if self.caseless:
+            if ( (instring[ loc:loc+self.matchLen ].upper() == self.caselessmatch) and
+                 (loc >= len(instring)-self.matchLen or instring[loc+self.matchLen].upper() not in self.identChars) and
+                 (loc == 0 or instring[loc-1].upper() not in self.identChars) ):
+                return loc+self.matchLen, self.match
+        else:
+            if (instring[loc] == self.firstMatchChar and
+                (self.matchLen==1 or instring.startswith(self.match,loc)) and
+                (loc >= len(instring)-self.matchLen or instring[loc+self.matchLen] not in self.identChars) and
+                (loc == 0 or instring[loc-1] not in self.identChars) ):
+                return loc+self.matchLen, self.match
+        raise ParseException(instring, loc, self.errmsg, self)
+
+    def copy(self):
+        c = super(Keyword,self).copy()
+        c.identChars = Keyword.DEFAULT_KEYWORD_CHARS
+        return c
+
+    @staticmethod
+    def setDefaultKeywordChars( chars ):
+        """Overrides the default Keyword chars
+        """
+        Keyword.DEFAULT_KEYWORD_CHARS = chars
+
+class CaselessLiteral(Literal):
+    """
+    Token to match a specified string, ignoring case of letters.
+    Note: the matched results will always be in the case of the given
+    match string, NOT the case of the input text.
+
+    Example::
+        OneOrMore(CaselessLiteral("CMD")).parseString("cmd CMD Cmd10") # -> ['CMD', 'CMD', 'CMD']
+        
+    (Contrast with example for L{CaselessKeyword}.)
+    """
+    def __init__( self, matchString ):
+        super(CaselessLiteral,self).__init__( matchString.upper() )
+        # Preserve the defining literal.
+        self.returnString = matchString
+        self.name = "'%s'" % self.returnString
+        self.errmsg = "Expected " + self.name
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        if instring[ loc:loc+self.matchLen ].upper() == self.match:
+            return loc+self.matchLen, self.returnString
+        raise ParseException(instring, loc, self.errmsg, self)
+
+class CaselessKeyword(Keyword):
+    """
+    Caseless version of L{Keyword}.
+
+    Example::
+        OneOrMore(CaselessKeyword("CMD")).parseString("cmd CMD Cmd10") # -> ['CMD', 'CMD']
+        
+    (Contrast with example for L{CaselessLiteral}.)
+    """
+    def __init__( self, matchString, identChars=None ):
+        super(CaselessKeyword,self).__init__( matchString, identChars, caseless=True )
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        if ( (instring[ loc:loc+self.matchLen ].upper() == self.caselessmatch) and
+             (loc >= len(instring)-self.matchLen or instring[loc+self.matchLen].upper() not in self.identChars) ):
+            return loc+self.matchLen, self.match
+        raise ParseException(instring, loc, self.errmsg, self)
+
+class CloseMatch(Token):
+    """
+    A variation on L{Literal} which matches "close" matches, that is, 
+    strings with at most 'n' mismatching characters. C{CloseMatch} takes parameters:
+     - C{match_string} - string to be matched
+     - C{maxMismatches} - (C{default=1}) maximum number of mismatches allowed to count as a match
+    
+    The results from a successful parse will contain the matched text from the input string and the following named results:
+     - C{mismatches} - a list of the positions within the match_string where mismatches were found
+     - C{original} - the original match_string used to compare against the input string
+    
+    If C{mismatches} is an empty list, then the match was an exact match.
+    
+    Example::
+        patt = CloseMatch("ATCATCGAATGGA")
+        patt.parseString("ATCATCGAAXGGA") # -> (['ATCATCGAAXGGA'], {'mismatches': [[9]], 'original': ['ATCATCGAATGGA']})
+        patt.parseString("ATCAXCGAAXGGA") # -> Exception: Expected 'ATCATCGAATGGA' (with up to 1 mismatches) (at char 0), (line:1, col:1)
+
+        # exact match
+        patt.parseString("ATCATCGAATGGA") # -> (['ATCATCGAATGGA'], {'mismatches': [[]], 'original': ['ATCATCGAATGGA']})
+
+        # close match allowing up to 2 mismatches
+        patt = CloseMatch("ATCATCGAATGGA", maxMismatches=2)
+        patt.parseString("ATCAXCGAAXGGA") # -> (['ATCAXCGAAXGGA'], {'mismatches': [[4, 9]], 'original': ['ATCATCGAATGGA']})
+    """
+    def __init__(self, match_string, maxMismatches=1):
+        super(CloseMatch,self).__init__()
+        self.name = match_string
+        self.match_string = match_string
+        self.maxMismatches = maxMismatches
+        self.errmsg = "Expected %r (with up to %d mismatches)" % (self.match_string, self.maxMismatches)
+        self.mayIndexError = False
+        self.mayReturnEmpty = False
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        start = loc
+        instrlen = len(instring)
+        maxloc = start + len(self.match_string)
+
+        if maxloc <= instrlen:
+            match_string = self.match_string
+            match_stringloc = 0
+            mismatches = []
+            maxMismatches = self.maxMismatches
+
+            for match_stringloc,s_m in enumerate(zip(instring[loc:maxloc], self.match_string)):
+                src,mat = s_m
+                if src != mat:
+                    mismatches.append(match_stringloc)
+                    if len(mismatches) > maxMismatches:
+                        break
+            else:
+                loc = match_stringloc + 1
+                results = ParseResults([instring[start:loc]])
+                results['original'] = self.match_string
+                results['mismatches'] = mismatches
+                return loc, results
+
+        raise ParseException(instring, loc, self.errmsg, self)
+
+
+class Word(Token):
+    """
+    Token for matching words composed of allowed character sets.
+    Defined with string containing all allowed initial characters,
+    an optional string containing allowed body characters (if omitted,
+    defaults to the initial character set), and an optional minimum,
+    maximum, and/or exact length.  The default value for C{min} is 1 (a
+    minimum value < 1 is not valid); the default values for C{max} and C{exact}
+    are 0, meaning no maximum or exact length restriction. An optional
+    C{excludeChars} parameter can list characters that might be found in 
+    the input C{bodyChars} string; useful to define a word of all printables
+    except for one or two characters, for instance.
+    
+    L{srange} is useful for defining custom character set strings for defining 
+    C{Word} expressions, using range notation from regular expression character sets.
+    
+    A common mistake is to use C{Word} to match a specific literal string, as in 
+    C{Word("Address")}. Remember that C{Word} uses the string argument to define
+    I{sets} of matchable characters. This expression would match "Add", "AAA",
+    "dAred", or any other word made up of the characters 'A', 'd', 'r', 'e', and 's'.
+    To match an exact literal string, use L{Literal} or L{Keyword}.
+
+    pyparsing includes helper strings for building Words:
+     - L{alphas}
+     - L{nums}
+     - L{alphanums}
+     - L{hexnums}
+     - L{alphas8bit} (alphabetic characters in ASCII range 128-255 - accented, tilded, umlauted, etc.)
+     - L{punc8bit} (non-alphabetic characters in ASCII range 128-255 - currency, symbols, superscripts, diacriticals, etc.)
+     - L{printables} (any non-whitespace character)
+
+    Example::
+        # a word composed of digits
+        integer = Word(nums) # equivalent to Word("0123456789") or Word(srange("0-9"))
+        
+        # a word with a leading capital, and zero or more lowercase
+        capital_word = Word(alphas.upper(), alphas.lower())
+
+        # hostnames are alphanumeric, with leading alpha, and '-'
+        hostname = Word(alphas, alphanums+'-')
+        
+        # roman numeral (not a strict parser, accepts invalid mix of characters)
+        roman = Word("IVXLCDM")
+        
+        # any string of non-whitespace characters, except for ','
+        csv_value = Word(printables, excludeChars=",")
+    """
+    def __init__( self, initChars, bodyChars=None, min=1, max=0, exact=0, asKeyword=False, excludeChars=None ):
+        super(Word,self).__init__()
+        if excludeChars:
+            initChars = ''.join(c for c in initChars if c not in excludeChars)
+            if bodyChars:
+                bodyChars = ''.join(c for c in bodyChars if c not in excludeChars)
+        self.initCharsOrig = initChars
+        self.initChars = set(initChars)
+        if bodyChars :
+            self.bodyCharsOrig = bodyChars
+            self.bodyChars = set(bodyChars)
+        else:
+            self.bodyCharsOrig = initChars
+            self.bodyChars = set(initChars)
+
+        self.maxSpecified = max > 0
+
+        if min < 1:
+            raise ValueError("cannot specify a minimum length < 1; use Optional(Word()) if zero-length word is permitted")
+
+        self.minLen = min
+
+        if max > 0:
+            self.maxLen = max
+        else:
+            self.maxLen = _MAX_INT
+
+        if exact > 0:
+            self.maxLen = exact
+            self.minLen = exact
+
+        self.name = _ustr(self)
+        self.errmsg = "Expected " + self.name
+        self.mayIndexError = False
+        self.asKeyword = asKeyword
+
+        if ' ' not in self.initCharsOrig+self.bodyCharsOrig and (min==1 and max==0 and exact==0):
+            if self.bodyCharsOrig == self.initCharsOrig:
+                self.reString = "[%s]+" % _escapeRegexRangeChars(self.initCharsOrig)
+            elif len(self.initCharsOrig) == 1:
+                self.reString = "%s[%s]*" % \
+                                      (re.escape(self.initCharsOrig),
+                                      _escapeRegexRangeChars(self.bodyCharsOrig),)
+            else:
+                self.reString = "[%s][%s]*" % \
+                                      (_escapeRegexRangeChars(self.initCharsOrig),
+                                      _escapeRegexRangeChars(self.bodyCharsOrig),)
+            if self.asKeyword:
+                self.reString = r"\b"+self.reString+r"\b"
+            try:
+                self.re = re.compile( self.reString )
+            except Exception:
+                self.re = None
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        if self.re:
+            result = self.re.match(instring,loc)
+            if not result:
+                raise ParseException(instring, loc, self.errmsg, self)
+
+            loc = result.end()
+            return loc, result.group()
+
+        if not(instring[ loc ] in self.initChars):
+            raise ParseException(instring, loc, self.errmsg, self)
+
+        start = loc
+        loc += 1
+        instrlen = len(instring)
+        bodychars = self.bodyChars
+        maxloc = start + self.maxLen
+        maxloc = min( maxloc, instrlen )
+        while loc < maxloc and instring[loc] in bodychars:
+            loc += 1
+
+        throwException = False
+        if loc - start < self.minLen:
+            throwException = True
+        if self.maxSpecified and loc < instrlen and instring[loc] in bodychars:
+            throwException = True
+        if self.asKeyword:
+            if (start>0 and instring[start-1] in bodychars) or (loc<instrlen and instring[loc] in bodychars):
+                throwException = True
+
+        if throwException:
+            raise ParseException(instring, loc, self.errmsg, self)
+
+        return loc, instring[start:loc]
+
+    def __str__( self ):
+        try:
+            return super(Word,self).__str__()
+        except Exception:
+            pass
+
+
+        if self.strRepr is None:
+
+            def charsAsStr(s):
+                if len(s)>4:
+                    return s[:4]+"..."
+                else:
+                    return s
+
+            if ( self.initCharsOrig != self.bodyCharsOrig ):
+                self.strRepr = "W:(%s,%s)" % ( charsAsStr(self.initCharsOrig), charsAsStr(self.bodyCharsOrig) )
+            else:
+                self.strRepr = "W:(%s)" % charsAsStr(self.initCharsOrig)
+
+        return self.strRepr
+
+
+class Regex(Token):
+    r"""
+    Token for matching strings that match a given regular expression.
+    Defined with string specifying the regular expression in a form recognized by the inbuilt Python re module.
+    If the given regex contains named groups (defined using C{(?P<name>...)}), these will be preserved as 
+    named parse results.
+
+    Example::
+        realnum = Regex(r"[+-]?\d+\.\d*")
+        date = Regex(r'(?P<year>\d{4})-(?P<month>\d\d?)-(?P<day>\d\d?)')
+        # ref: http://stackoverflow.com/questions/267399/how-do-you-match-only-valid-roman-numerals-with-a-regular-expression
+        roman = Regex(r"M{0,4}(CM|CD|D?C{0,3})(XC|XL|L?X{0,3})(IX|IV|V?I{0,3})")
+    """
+    compiledREtype = type(re.compile("[A-Z]"))
+    def __init__( self, pattern, flags=0):
+        """The parameters C{pattern} and C{flags} are passed to the C{re.compile()} function as-is. See the Python C{re} module for an explanation of the acceptable patterns and flags."""
+        super(Regex,self).__init__()
+
+        if isinstance(pattern, basestring):
+            if not pattern:
+                warnings.warn("null string passed to Regex; use Empty() instead",
+                        SyntaxWarning, stacklevel=2)
+
+            self.pattern = pattern
+            self.flags = flags
+
+            try:
+                self.re = re.compile(self.pattern, self.flags)
+                self.reString = self.pattern
+            except sre_constants.error:
+                warnings.warn("invalid pattern (%s) passed to Regex" % pattern,
+                    SyntaxWarning, stacklevel=2)
+                raise
+
+        elif isinstance(pattern, Regex.compiledREtype):
+            self.re = pattern
+            self.pattern = \
+            self.reString = str(pattern)
+            self.flags = flags
+            
+        else:
+            raise ValueError("Regex may only be constructed with a string or a compiled RE object")
+
+        self.name = _ustr(self)
+        self.errmsg = "Expected " + self.name
+        self.mayIndexError = False
+        self.mayReturnEmpty = True
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        result = self.re.match(instring,loc)
+        if not result:
+            raise ParseException(instring, loc, self.errmsg, self)
+
+        loc = result.end()
+        d = result.groupdict()
+        ret = ParseResults(result.group())
+        if d:
+            for k in d:
+                ret[k] = d[k]
+        return loc,ret
+
+    def __str__( self ):
+        try:
+            return super(Regex,self).__str__()
+        except Exception:
+            pass
+
+        if self.strRepr is None:
+            self.strRepr = "Re:(%s)" % repr(self.pattern)
+
+        return self.strRepr
+
+
+class QuotedString(Token):
+    r"""
+    Token for matching strings that are delimited by quoting characters.
+    
+    Defined with the following parameters:
+        - quoteChar - string of one or more characters defining the quote delimiting string
+        - escChar - character to escape quotes, typically backslash (default=C{None})
+        - escQuote - special quote sequence to escape an embedded quote string (such as SQL's "" to escape an embedded ") (default=C{None})
+        - multiline - boolean indicating whether quotes can span multiple lines (default=C{False})
+        - unquoteResults - boolean indicating whether the matched text should be unquoted (default=C{True})
+        - endQuoteChar - string of one or more characters defining the end of the quote delimited string (default=C{None} => same as quoteChar)
+        - convertWhitespaceEscapes - convert escaped whitespace (C{'\t'}, C{'\n'}, etc.) to actual whitespace (default=C{True})
+
+    Example::
+        qs = QuotedString('"')
+        print(qs.searchString('lsjdf "This is the quote" sldjf'))
+        complex_qs = QuotedString('{{', endQuoteChar='}}')
+        print(complex_qs.searchString('lsjdf {{This is the "quote"}} sldjf'))
+        sql_qs = QuotedString('"', escQuote='""')
+        print(sql_qs.searchString('lsjdf "This is the quote with ""embedded"" quotes" sldjf'))
+    prints::
+        [['This is the quote']]
+        [['This is the "quote"']]
+        [['This is the quote with "embedded" quotes']]
+    """
+    def __init__( self, quoteChar, escChar=None, escQuote=None, multiline=False, unquoteResults=True, endQuoteChar=None, convertWhitespaceEscapes=True):
+        super(QuotedString,self).__init__()
+
+        # remove white space from quote chars - wont work anyway
+        quoteChar = quoteChar.strip()
+        if not quoteChar:
+            warnings.warn("quoteChar cannot be the empty string",SyntaxWarning,stacklevel=2)
+            raise SyntaxError()
+
+        if endQuoteChar is None:
+            endQuoteChar = quoteChar
+        else:
+            endQuoteChar = endQuoteChar.strip()
+            if not endQuoteChar:
+                warnings.warn("endQuoteChar cannot be the empty string",SyntaxWarning,stacklevel=2)
+                raise SyntaxError()
+
+        self.quoteChar = quoteChar
+        self.quoteCharLen = len(quoteChar)
+        self.firstQuoteChar = quoteChar[0]
+        self.endQuoteChar = endQuoteChar
+        self.endQuoteCharLen = len(endQuoteChar)
+        self.escChar = escChar
+        self.escQuote = escQuote
+        self.unquoteResults = unquoteResults
+        self.convertWhitespaceEscapes = convertWhitespaceEscapes
+
+        if multiline:
+            self.flags = re.MULTILINE | re.DOTALL
+            self.pattern = r'%s(?:[^%s%s]' % \
+                ( re.escape(self.quoteChar),
+                  _escapeRegexRangeChars(self.endQuoteChar[0]),
+                  (escChar is not None and _escapeRegexRangeChars(escChar) or '') )
+        else:
+            self.flags = 0
+            self.pattern = r'%s(?:[^%s\n\r%s]' % \
+                ( re.escape(self.quoteChar),
+                  _escapeRegexRangeChars(self.endQuoteChar[0]),
+                  (escChar is not None and _escapeRegexRangeChars(escChar) or '') )
+        if len(self.endQuoteChar) > 1:
+            self.pattern += (
+                '|(?:' + ')|(?:'.join("%s[^%s]" % (re.escape(self.endQuoteChar[:i]),
+                                               _escapeRegexRangeChars(self.endQuoteChar[i]))
+                                    for i in range(len(self.endQuoteChar)-1,0,-1)) + ')'
+                )
+        if escQuote:
+            self.pattern += (r'|(?:%s)' % re.escape(escQuote))
+        if escChar:
+            self.pattern += (r'|(?:%s.)' % re.escape(escChar))
+            self.escCharReplacePattern = re.escape(self.escChar)+"(.)"
+        self.pattern += (r')*%s' % re.escape(self.endQuoteChar))
+
+        try:
+            self.re = re.compile(self.pattern, self.flags)
+            self.reString = self.pattern
+        except sre_constants.error:
+            warnings.warn("invalid pattern (%s) passed to Regex" % self.pattern,
+                SyntaxWarning, stacklevel=2)
+            raise
+
+        self.name = _ustr(self)
+        self.errmsg = "Expected " + self.name
+        self.mayIndexError = False
+        self.mayReturnEmpty = True
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        result = instring[loc] == self.firstQuoteChar and self.re.match(instring,loc) or None
+        if not result:
+            raise ParseException(instring, loc, self.errmsg, self)
+
+        loc = result.end()
+        ret = result.group()
+
+        if self.unquoteResults:
+
+            # strip off quotes
+            ret = ret[self.quoteCharLen:-self.endQuoteCharLen]
+
+            if isinstance(ret,basestring):
+                # replace escaped whitespace
+                if '\\' in ret and self.convertWhitespaceEscapes:
+                    ws_map = {
+                        r'\t' : '\t',
+                        r'\n' : '\n',
+                        r'\f' : '\f',
+                        r'\r' : '\r',
+                    }
+                    for wslit,wschar in ws_map.items():
+                        ret = ret.replace(wslit, wschar)
+
+                # replace escaped characters
+                if self.escChar:
+                    ret = re.sub(self.escCharReplacePattern, r"\g<1>", ret)
+
+                # replace escaped quotes
+                if self.escQuote:
+                    ret = ret.replace(self.escQuote, self.endQuoteChar)
+
+        return loc, ret
+
+    def __str__( self ):
+        try:
+            return super(QuotedString,self).__str__()
+        except Exception:
+            pass
+
+        if self.strRepr is None:
+            self.strRepr = "quoted string, starting with %s ending with %s" % (self.quoteChar, self.endQuoteChar)
+
+        return self.strRepr
+
+
+class CharsNotIn(Token):
+    """
+    Token for matching words composed of characters I{not} in a given set (will
+    include whitespace in matched characters if not listed in the provided exclusion set - see example).
+    Defined with string containing all disallowed characters, and an optional
+    minimum, maximum, and/or exact length.  The default value for C{min} is 1 (a
+    minimum value < 1 is not valid); the default values for C{max} and C{exact}
+    are 0, meaning no maximum or exact length restriction.
+
+    Example::
+        # define a comma-separated-value as anything that is not a ','
+        csv_value = CharsNotIn(',')
+        print(delimitedList(csv_value).parseString("dkls,lsdkjf,s12 34,@!#,213"))
+    prints::
+        ['dkls', 'lsdkjf', 's12 34', '@!#', '213']
+    """
+    def __init__( self, notChars, min=1, max=0, exact=0 ):
+        super(CharsNotIn,self).__init__()
+        self.skipWhitespace = False
+        self.notChars = notChars
+
+        if min < 1:
+            raise ValueError("cannot specify a minimum length < 1; use Optional(CharsNotIn()) if zero-length char group is permitted")
+
+        self.minLen = min
+
+        if max > 0:
+            self.maxLen = max
+        else:
+            self.maxLen = _MAX_INT
+
+        if exact > 0:
+            self.maxLen = exact
+            self.minLen = exact
+
+        self.name = _ustr(self)
+        self.errmsg = "Expected " + self.name
+        self.mayReturnEmpty = ( self.minLen == 0 )
+        self.mayIndexError = False
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        if instring[loc] in self.notChars:
+            raise ParseException(instring, loc, self.errmsg, self)
+
+        start = loc
+        loc += 1
+        notchars = self.notChars
+        maxlen = min( start+self.maxLen, len(instring) )
+        while loc < maxlen and \
+              (instring[loc] not in notchars):
+            loc += 1
+
+        if loc - start < self.minLen:
+            raise ParseException(instring, loc, self.errmsg, self)
+
+        return loc, instring[start:loc]
+
+    def __str__( self ):
+        try:
+            return super(CharsNotIn, self).__str__()
+        except Exception:
+            pass
+
+        if self.strRepr is None:
+            if len(self.notChars) > 4:
+                self.strRepr = "!W:(%s...)" % self.notChars[:4]
+            else:
+                self.strRepr = "!W:(%s)" % self.notChars
+
+        return self.strRepr
+
+class White(Token):
+    """
+    Special matching class for matching whitespace.  Normally, whitespace is ignored
+    by pyparsing grammars.  This class is included when some whitespace structures
+    are significant.  Define with a string containing the whitespace characters to be
+    matched; default is C{" \\t\\r\\n"}.  Also takes optional C{min}, C{max}, and C{exact} arguments,
+    as defined for the C{L{Word}} class.
+    """
+    whiteStrs = {
+        " " : "<SPC>",
+        "\t": "<TAB>",
+        "\n": "<LF>",
+        "\r": "<CR>",
+        "\f": "<FF>",
+        }
+    def __init__(self, ws=" \t\r\n", min=1, max=0, exact=0):
+        super(White,self).__init__()
+        self.matchWhite = ws
+        self.setWhitespaceChars( "".join(c for c in self.whiteChars if c not in self.matchWhite) )
+        #~ self.leaveWhitespace()
+        self.name = ("".join(White.whiteStrs[c] for c in self.matchWhite))
+        self.mayReturnEmpty = True
+        self.errmsg = "Expected " + self.name
+
+        self.minLen = min
+
+        if max > 0:
+            self.maxLen = max
+        else:
+            self.maxLen = _MAX_INT
+
+        if exact > 0:
+            self.maxLen = exact
+            self.minLen = exact
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        if not(instring[ loc ] in self.matchWhite):
+            raise ParseException(instring, loc, self.errmsg, self)
+        start = loc
+        loc += 1
+        maxloc = start + self.maxLen
+        maxloc = min( maxloc, len(instring) )
+        while loc < maxloc and instring[loc] in self.matchWhite:
+            loc += 1
+
+        if loc - start < self.minLen:
+            raise ParseException(instring, loc, self.errmsg, self)
+
+        return loc, instring[start:loc]
+
+
+class _PositionToken(Token):
+    def __init__( self ):
+        super(_PositionToken,self).__init__()
+        self.name=self.__class__.__name__
+        self.mayReturnEmpty = True
+        self.mayIndexError = False
+
+class GoToColumn(_PositionToken):
+    """
+    Token to advance to a specific column of input text; useful for tabular report scraping.
+    """
+    def __init__( self, colno ):
+        super(GoToColumn,self).__init__()
+        self.col = colno
+
+    def preParse( self, instring, loc ):
+        if col(loc,instring) != self.col:
+            instrlen = len(instring)
+            if self.ignoreExprs:
+                loc = self._skipIgnorables( instring, loc )
+            while loc < instrlen and instring[loc].isspace() and col( loc, instring ) != self.col :
+                loc += 1
+        return loc
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        thiscol = col( loc, instring )
+        if thiscol > self.col:
+            raise ParseException( instring, loc, "Text not in expected column", self )
+        newloc = loc + self.col - thiscol
+        ret = instring[ loc: newloc ]
+        return newloc, ret
+
+
+class LineStart(_PositionToken):
+    """
+    Matches if current position is at the beginning of a line within the parse string
+    
+    Example::
+    
+        test = '''\
+        AAA this line
+        AAA and this line
+          AAA but not this one
+        B AAA and definitely not this one
+        '''
+
+        for t in (LineStart() + 'AAA' + restOfLine).searchString(test):
+            print(t)
+    
+    Prints::
+        ['AAA', ' this line']
+        ['AAA', ' and this line']    
+
+    """
+    def __init__( self ):
+        super(LineStart,self).__init__()
+        self.errmsg = "Expected start of line"
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        if col(loc, instring) == 1:
+            return loc, []
+        raise ParseException(instring, loc, self.errmsg, self)
+
+class LineEnd(_PositionToken):
+    """
+    Matches if current position is at the end of a line within the parse string
+    """
+    def __init__( self ):
+        super(LineEnd,self).__init__()
+        self.setWhitespaceChars( ParserElement.DEFAULT_WHITE_CHARS.replace("\n","") )
+        self.errmsg = "Expected end of line"
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        if loc<len(instring):
+            if instring[loc] == "\n":
+                return loc+1, "\n"
+            else:
+                raise ParseException(instring, loc, self.errmsg, self)
+        elif loc == len(instring):
+            return loc+1, []
+        else:
+            raise ParseException(instring, loc, self.errmsg, self)
+
+class StringStart(_PositionToken):
+    """
+    Matches if current position is at the beginning of the parse string
+    """
+    def __init__( self ):
+        super(StringStart,self).__init__()
+        self.errmsg = "Expected start of text"
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        if loc != 0:
+            # see if entire string up to here is just whitespace and ignoreables
+            if loc != self.preParse( instring, 0 ):
+                raise ParseException(instring, loc, self.errmsg, self)
+        return loc, []
+
+class StringEnd(_PositionToken):
+    """
+    Matches if current position is at the end of the parse string
+    """
+    def __init__( self ):
+        super(StringEnd,self).__init__()
+        self.errmsg = "Expected end of text"
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        if loc < len(instring):
+            raise ParseException(instring, loc, self.errmsg, self)
+        elif loc == len(instring):
+            return loc+1, []
+        elif loc > len(instring):
+            return loc, []
+        else:
+            raise ParseException(instring, loc, self.errmsg, self)
+
+class WordStart(_PositionToken):
+    """
+    Matches if the current position is at the beginning of a Word, and
+    is not preceded by any character in a given set of C{wordChars}
+    (default=C{printables}). To emulate the C{\b} behavior of regular expressions,
+    use C{WordStart(alphanums)}. C{WordStart} will also match at the beginning of
+    the string being parsed, or at the beginning of a line.
+    """
+    def __init__(self, wordChars = printables):
+        super(WordStart,self).__init__()
+        self.wordChars = set(wordChars)
+        self.errmsg = "Not at the start of a word"
+
+    def parseImpl(self, instring, loc, doActions=True ):
+        if loc != 0:
+            if (instring[loc-1] in self.wordChars or
+                instring[loc] not in self.wordChars):
+                raise ParseException(instring, loc, self.errmsg, self)
+        return loc, []
+
+class WordEnd(_PositionToken):
+    """
+    Matches if the current position is at the end of a Word, and
+    is not followed by any character in a given set of C{wordChars}
+    (default=C{printables}). To emulate the C{\b} behavior of regular expressions,
+    use C{WordEnd(alphanums)}. C{WordEnd} will also match at the end of
+    the string being parsed, or at the end of a line.
+    """
+    def __init__(self, wordChars = printables):
+        super(WordEnd,self).__init__()
+        self.wordChars = set(wordChars)
+        self.skipWhitespace = False
+        self.errmsg = "Not at the end of a word"
+
+    def parseImpl(self, instring, loc, doActions=True ):
+        instrlen = len(instring)
+        if instrlen>0 and loc<instrlen:
+            if (instring[loc] in self.wordChars or
+                instring[loc-1] not in self.wordChars):
+                raise ParseException(instring, loc, self.errmsg, self)
+        return loc, []
+
+
+class ParseExpression(ParserElement):
+    """
+    Abstract subclass of ParserElement, for combining and post-processing parsed tokens.
+    """
+    def __init__( self, exprs, savelist = False ):
+        super(ParseExpression,self).__init__(savelist)
+        if isinstance( exprs, _generatorType ):
+            exprs = list(exprs)
+
+        if isinstance( exprs, basestring ):
+            self.exprs = [ ParserElement._literalStringClass( exprs ) ]
+        elif isinstance( exprs, Iterable ):
+            exprs = list(exprs)
+            # if sequence of strings provided, wrap with Literal
+            if all(isinstance(expr, basestring) for expr in exprs):
+                exprs = map(ParserElement._literalStringClass, exprs)
+            self.exprs = list(exprs)
+        else:
+            try:
+                self.exprs = list( exprs )
+            except TypeError:
+                self.exprs = [ exprs ]
+        self.callPreparse = False
+
+    def __getitem__( self, i ):
+        return self.exprs[i]
+
+    def append( self, other ):
+        self.exprs.append( other )
+        self.strRepr = None
+        return self
+
+    def leaveWhitespace( self ):
+        """Extends C{leaveWhitespace} defined in base class, and also invokes C{leaveWhitespace} on
+           all contained expressions."""
+        self.skipWhitespace = False
+        self.exprs = [ e.copy() for e in self.exprs ]
+        for e in self.exprs:
+            e.leaveWhitespace()
+        return self
+
+    def ignore( self, other ):
+        if isinstance( other, Suppress ):
+            if other not in self.ignoreExprs:
+                super( ParseExpression, self).ignore( other )
+                for e in self.exprs:
+                    e.ignore( self.ignoreExprs[-1] )
+        else:
+            super( ParseExpression, self).ignore( other )
+            for e in self.exprs:
+                e.ignore( self.ignoreExprs[-1] )
+        return self
+
+    def __str__( self ):
+        try:
+            return super(ParseExpression,self).__str__()
+        except Exception:
+            pass
+
+        if self.strRepr is None:
+            self.strRepr = "%s:(%s)" % ( self.__class__.__name__, _ustr(self.exprs) )
+        return self.strRepr
+
+    def streamline( self ):
+        super(ParseExpression,self).streamline()
+
+        for e in self.exprs:
+            e.streamline()
+
+        # collapse nested And's of the form And( And( And( a,b), c), d) to And( a,b,c,d )
+        # but only if there are no parse actions or resultsNames on the nested And's
+        # (likewise for Or's and MatchFirst's)
+        if ( len(self.exprs) == 2 ):
+            other = self.exprs[0]
+            if ( isinstance( other, self.__class__ ) and
+                  not(other.parseAction) and
+                  other.resultsName is None and
+                  not other.debug ):
+                self.exprs = other.exprs[:] + [ self.exprs[1] ]
+                self.strRepr = None
+                self.mayReturnEmpty |= other.mayReturnEmpty
+                self.mayIndexError  |= other.mayIndexError
+
+            other = self.exprs[-1]
+            if ( isinstance( other, self.__class__ ) and
+                  not(other.parseAction) and
+                  other.resultsName is None and
+                  not other.debug ):
+                self.exprs = self.exprs[:-1] + other.exprs[:]
+                self.strRepr = None
+                self.mayReturnEmpty |= other.mayReturnEmpty
+                self.mayIndexError  |= other.mayIndexError
+
+        self.errmsg = "Expected " + _ustr(self)
+        
+        return self
+
+    def setResultsName( self, name, listAllMatches=False ):
+        ret = super(ParseExpression,self).setResultsName(name,listAllMatches)
+        return ret
+
+    def validate( self, validateTrace=[] ):
+        tmp = validateTrace[:]+[self]
+        for e in self.exprs:
+            e.validate(tmp)
+        self.checkRecursion( [] )
+        
+    def copy(self):
+        ret = super(ParseExpression,self).copy()
+        ret.exprs = [e.copy() for e in self.exprs]
+        return ret
+
+class And(ParseExpression):
+    """
+    Requires all given C{ParseExpression}s to be found in the given order.
+    Expressions may be separated by whitespace.
+    May be constructed using the C{'+'} operator.
+    May also be constructed using the C{'-'} operator, which will suppress backtracking.
+
+    Example::
+        integer = Word(nums)
+        name_expr = OneOrMore(Word(alphas))
+
+        expr = And([integer("id"),name_expr("name"),integer("age")])
+        # more easily written as:
+        expr = integer("id") + name_expr("name") + integer("age")
+    """
+
+    class _ErrorStop(Empty):
+        def __init__(self, *args, **kwargs):
+            super(And._ErrorStop,self).__init__(*args, **kwargs)
+            self.name = '-'
+            self.leaveWhitespace()
+
+    def __init__( self, exprs, savelist = True ):
+        super(And,self).__init__(exprs, savelist)
+        self.mayReturnEmpty = all(e.mayReturnEmpty for e in self.exprs)
+        self.setWhitespaceChars( self.exprs[0].whiteChars )
+        self.skipWhitespace = self.exprs[0].skipWhitespace
+        self.callPreparse = True
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        # pass False as last arg to _parse for first element, since we already
+        # pre-parsed the string as part of our And pre-parsing
+        loc, resultlist = self.exprs[0]._parse( instring, loc, doActions, callPreParse=False )
+        errorStop = False
+        for e in self.exprs[1:]:
+            if isinstance(e, And._ErrorStop):
+                errorStop = True
+                continue
+            if errorStop:
+                try:
+                    loc, exprtokens = e._parse( instring, loc, doActions )
+                except ParseSyntaxException:
+                    raise
+                except ParseBaseException as pe:
+                    pe.__traceback__ = None
+                    raise ParseSyntaxException._from_exception(pe)
+                except IndexError:
+                    raise ParseSyntaxException(instring, len(instring), self.errmsg, self)
+            else:
+                loc, exprtokens = e._parse( instring, loc, doActions )
+            if exprtokens or exprtokens.haskeys():
+                resultlist += exprtokens
+        return loc, resultlist
+
+    def __iadd__(self, other ):
+        if isinstance( other, basestring ):
+            other = ParserElement._literalStringClass( other )
+        return self.append( other ) #And( [ self, other ] )
+
+    def checkRecursion( self, parseElementList ):
+        subRecCheckList = parseElementList[:] + [ self ]
+        for e in self.exprs:
+            e.checkRecursion( subRecCheckList )
+            if not e.mayReturnEmpty:
+                break
+
+    def __str__( self ):
+        if hasattr(self,"name"):
+            return self.name
+
+        if self.strRepr is None:
+            self.strRepr = "{" + " ".join(_ustr(e) for e in self.exprs) + "}"
+
+        return self.strRepr
+
+
+class Or(ParseExpression):
+    """
+    Requires that at least one C{ParseExpression} is found.
+    If two expressions match, the expression that matches the longest string will be used.
+    May be constructed using the C{'^'} operator.
+
+    Example::
+        # construct Or using '^' operator
+        
+        number = Word(nums) ^ Combine(Word(nums) + '.' + Word(nums))
+        print(number.searchString("123 3.1416 789"))
+    prints::
+        [['123'], ['3.1416'], ['789']]
+    """
+    def __init__( self, exprs, savelist = False ):
+        super(Or,self).__init__(exprs, savelist)
+        if self.exprs:
+            self.mayReturnEmpty = any(e.mayReturnEmpty for e in self.exprs)
+        else:
+            self.mayReturnEmpty = True
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        maxExcLoc = -1
+        maxException = None
+        matches = []
+        for e in self.exprs:
+            try:
+                loc2 = e.tryParse( instring, loc )
+            except ParseException as err:
+                err.__traceback__ = None
+                if err.loc > maxExcLoc:
+                    maxException = err
+                    maxExcLoc = err.loc
+            except IndexError:
+                if len(instring) > maxExcLoc:
+                    maxException = ParseException(instring,len(instring),e.errmsg,self)
+                    maxExcLoc = len(instring)
+            else:
+                # save match among all matches, to retry longest to shortest
+                matches.append((loc2, e))
+
+        if matches:
+            matches.sort(key=lambda x: -x[0])
+            for _,e in matches:
+                try:
+                    return e._parse( instring, loc, doActions )
+                except ParseException as err:
+                    err.__traceback__ = None
+                    if err.loc > maxExcLoc:
+                        maxException = err
+                        maxExcLoc = err.loc
+
+        if maxException is not None:
+            maxException.msg = self.errmsg
+            raise maxException
+        else:
+            raise ParseException(instring, loc, "no defined alternatives to match", self)
+
+
+    def __ixor__(self, other ):
+        if isinstance( other, basestring ):
+            other = ParserElement._literalStringClass( other )
+        return self.append( other ) #Or( [ self, other ] )
+
+    def __str__( self ):
+        if hasattr(self,"name"):
+            return self.name
+
+        if self.strRepr is None:
+            self.strRepr = "{" + " ^ ".join(_ustr(e) for e in self.exprs) + "}"
+
+        return self.strRepr
+
+    def checkRecursion( self, parseElementList ):
+        subRecCheckList = parseElementList[:] + [ self ]
+        for e in self.exprs:
+            e.checkRecursion( subRecCheckList )
+
+
+class MatchFirst(ParseExpression):
+    """
+    Requires that at least one C{ParseExpression} is found.
+    If two expressions match, the first one listed is the one that will match.
+    May be constructed using the C{'|'} operator.
+
+    Example::
+        # construct MatchFirst using '|' operator
+        
+        # watch the order of expressions to match
+        number = Word(nums) | Combine(Word(nums) + '.' + Word(nums))
+        print(number.searchString("123 3.1416 789")) #  Fail! -> [['123'], ['3'], ['1416'], ['789']]
+
+        # put more selective expression first
+        number = Combine(Word(nums) + '.' + Word(nums)) | Word(nums)
+        print(number.searchString("123 3.1416 789")) #  Better -> [['123'], ['3.1416'], ['789']]
+    """
+    def __init__( self, exprs, savelist = False ):
+        super(MatchFirst,self).__init__(exprs, savelist)
+        if self.exprs:
+            self.mayReturnEmpty = any(e.mayReturnEmpty for e in self.exprs)
+        else:
+            self.mayReturnEmpty = True
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        maxExcLoc = -1
+        maxException = None
+        for e in self.exprs:
+            try:
+                ret = e._parse( instring, loc, doActions )
+                return ret
+            except ParseException as err:
+                if err.loc > maxExcLoc:
+                    maxException = err
+                    maxExcLoc = err.loc
+            except IndexError:
+                if len(instring) > maxExcLoc:
+                    maxException = ParseException(instring,len(instring),e.errmsg,self)
+                    maxExcLoc = len(instring)
+
+        # only got here if no expression matched, raise exception for match that made it the furthest
+        else:
+            if maxException is not None:
+                maxException.msg = self.errmsg
+                raise maxException
+            else:
+                raise ParseException(instring, loc, "no defined alternatives to match", self)
+
+    def __ior__(self, other ):
+        if isinstance( other, basestring ):
+            other = ParserElement._literalStringClass( other )
+        return self.append( other ) #MatchFirst( [ self, other ] )
+
+    def __str__( self ):
+        if hasattr(self,"name"):
+            return self.name
+
+        if self.strRepr is None:
+            self.strRepr = "{" + " | ".join(_ustr(e) for e in self.exprs) + "}"
+
+        return self.strRepr
+
+    def checkRecursion( self, parseElementList ):
+        subRecCheckList = parseElementList[:] + [ self ]
+        for e in self.exprs:
+            e.checkRecursion( subRecCheckList )
+
+
+class Each(ParseExpression):
+    """
+    Requires all given C{ParseExpression}s to be found, but in any order.
+    Expressions may be separated by whitespace.
+    May be constructed using the C{'&'} operator.
+
+    Example::
+        color = oneOf("RED ORANGE YELLOW GREEN BLUE PURPLE BLACK WHITE BROWN")
+        shape_type = oneOf("SQUARE CIRCLE TRIANGLE STAR HEXAGON OCTAGON")
+        integer = Word(nums)
+        shape_attr = "shape:" + shape_type("shape")
+        posn_attr = "posn:" + Group(integer("x") + ',' + integer("y"))("posn")
+        color_attr = "color:" + color("color")
+        size_attr = "size:" + integer("size")
+
+        # use Each (using operator '&') to accept attributes in any order 
+        # (shape and posn are required, color and size are optional)
+        shape_spec = shape_attr & posn_attr & Optional(color_attr) & Optional(size_attr)
+
+        shape_spec.runTests('''
+            shape: SQUARE color: BLACK posn: 100, 120
+            shape: CIRCLE size: 50 color: BLUE posn: 50,80
+            color:GREEN size:20 shape:TRIANGLE posn:20,40
+            '''
+            )
+    prints::
+        shape: SQUARE color: BLACK posn: 100, 120
+        ['shape:', 'SQUARE', 'color:', 'BLACK', 'posn:', ['100', ',', '120']]
+        - color: BLACK
+        - posn: ['100', ',', '120']
+          - x: 100
+          - y: 120
+        - shape: SQUARE
+
+
+        shape: CIRCLE size: 50 color: BLUE posn: 50,80
+        ['shape:', 'CIRCLE', 'size:', '50', 'color:', 'BLUE', 'posn:', ['50', ',', '80']]
+        - color: BLUE
+        - posn: ['50', ',', '80']
+          - x: 50
+          - y: 80
+        - shape: CIRCLE
+        - size: 50
+
+
+        color: GREEN size: 20 shape: TRIANGLE posn: 20,40
+        ['color:', 'GREEN', 'size:', '20', 'shape:', 'TRIANGLE', 'posn:', ['20', ',', '40']]
+        - color: GREEN
+        - posn: ['20', ',', '40']
+          - x: 20
+          - y: 40
+        - shape: TRIANGLE
+        - size: 20
+    """
+    def __init__( self, exprs, savelist = True ):
+        super(Each,self).__init__(exprs, savelist)
+        self.mayReturnEmpty = all(e.mayReturnEmpty for e in self.exprs)
+        self.skipWhitespace = True
+        self.initExprGroups = True
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        if self.initExprGroups:
+            self.opt1map = dict((id(e.expr),e) for e in self.exprs if isinstance(e,Optional))
+            opt1 = [ e.expr for e in self.exprs if isinstance(e,Optional) ]
+            opt2 = [ e for e in self.exprs if e.mayReturnEmpty and not isinstance(e,Optional)]
+            self.optionals = opt1 + opt2
+            self.multioptionals = [ e.expr for e in self.exprs if isinstance(e,ZeroOrMore) ]
+            self.multirequired = [ e.expr for e in self.exprs if isinstance(e,OneOrMore) ]
+            self.required = [ e for e in self.exprs if not isinstance(e,(Optional,ZeroOrMore,OneOrMore)) ]
+            self.required += self.multirequired
+            self.initExprGroups = False
+        tmpLoc = loc
+        tmpReqd = self.required[:]
+        tmpOpt  = self.optionals[:]
+        matchOrder = []
+
+        keepMatching = True
+        while keepMatching:
+            tmpExprs = tmpReqd + tmpOpt + self.multioptionals + self.multirequired
+            failed = []
+            for e in tmpExprs:
+                try:
+                    tmpLoc = e.tryParse( instring, tmpLoc )
+                except ParseException:
+                    failed.append(e)
+                else:
+                    matchOrder.append(self.opt1map.get(id(e),e))
+                    if e in tmpReqd:
+                        tmpReqd.remove(e)
+                    elif e in tmpOpt:
+                        tmpOpt.remove(e)
+            if len(failed) == len(tmpExprs):
+                keepMatching = False
+
+        if tmpReqd:
+            missing = ", ".join(_ustr(e) for e in tmpReqd)
+            raise ParseException(instring,loc,"Missing one or more required elements (%s)" % missing )
+
+        # add any unmatched Optionals, in case they have default values defined
+        matchOrder += [e for e in self.exprs if isinstance(e,Optional) and e.expr in tmpOpt]
+
+        resultlist = []
+        for e in matchOrder:
+            loc,results = e._parse(instring,loc,doActions)
+            resultlist.append(results)
+
+        finalResults = sum(resultlist, ParseResults([]))
+        return loc, finalResults
+
+    def __str__( self ):
+        if hasattr(self,"name"):
+            return self.name
+
+        if self.strRepr is None:
+            self.strRepr = "{" + " & ".join(_ustr(e) for e in self.exprs) + "}"
+
+        return self.strRepr
+
+    def checkRecursion( self, parseElementList ):
+        subRecCheckList = parseElementList[:] + [ self ]
+        for e in self.exprs:
+            e.checkRecursion( subRecCheckList )
+
+
+class ParseElementEnhance(ParserElement):
+    """
+    Abstract subclass of C{ParserElement}, for combining and post-processing parsed tokens.
+    """
+    def __init__( self, expr, savelist=False ):
+        super(ParseElementEnhance,self).__init__(savelist)
+        if isinstance( expr, basestring ):
+            if issubclass(ParserElement._literalStringClass, Token):
+                expr = ParserElement._literalStringClass(expr)
+            else:
+                expr = ParserElement._literalStringClass(Literal(expr))
+        self.expr = expr
+        self.strRepr = None
+        if expr is not None:
+            self.mayIndexError = expr.mayIndexError
+            self.mayReturnEmpty = expr.mayReturnEmpty
+            self.setWhitespaceChars( expr.whiteChars )
+            self.skipWhitespace = expr.skipWhitespace
+            self.saveAsList = expr.saveAsList
+            self.callPreparse = expr.callPreparse
+            self.ignoreExprs.extend(expr.ignoreExprs)
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        if self.expr is not None:
+            return self.expr._parse( instring, loc, doActions, callPreParse=False )
+        else:
+            raise ParseException("",loc,self.errmsg,self)
+
+    def leaveWhitespace( self ):
+        self.skipWhitespace = False
+        self.expr = self.expr.copy()
+        if self.expr is not None:
+            self.expr.leaveWhitespace()
+        return self
+
+    def ignore( self, other ):
+        if isinstance( other, Suppress ):
+            if other not in self.ignoreExprs:
+                super( ParseElementEnhance, self).ignore( other )
+                if self.expr is not None:
+                    self.expr.ignore( self.ignoreExprs[-1] )
+        else:
+            super( ParseElementEnhance, self).ignore( other )
+            if self.expr is not None:
+                self.expr.ignore( self.ignoreExprs[-1] )
+        return self
+
+    def streamline( self ):
+        super(ParseElementEnhance,self).streamline()
+        if self.expr is not None:
+            self.expr.streamline()
+        return self
+
+    def checkRecursion( self, parseElementList ):
+        if self in parseElementList:
+            raise RecursiveGrammarException( parseElementList+[self] )
+        subRecCheckList = parseElementList[:] + [ self ]
+        if self.expr is not None:
+            self.expr.checkRecursion( subRecCheckList )
+
+    def validate( self, validateTrace=[] ):
+        tmp = validateTrace[:]+[self]
+        if self.expr is not None:
+            self.expr.validate(tmp)
+        self.checkRecursion( [] )
+
+    def __str__( self ):
+        try:
+            return super(ParseElementEnhance,self).__str__()
+        except Exception:
+            pass
+
+        if self.strRepr is None and self.expr is not None:
+            self.strRepr = "%s:(%s)" % ( self.__class__.__name__, _ustr(self.expr) )
+        return self.strRepr
+
+
+class FollowedBy(ParseElementEnhance):
+    """
+    Lookahead matching of the given parse expression.  C{FollowedBy}
+    does I{not} advance the parsing position within the input string, it only
+    verifies that the specified parse expression matches at the current
+    position.  C{FollowedBy} always returns a null token list.
+
+    Example::
+        # use FollowedBy to match a label only if it is followed by a ':'
+        data_word = Word(alphas)
+        label = data_word + FollowedBy(':')
+        attr_expr = Group(label + Suppress(':') + OneOrMore(data_word, stopOn=label).setParseAction(' '.join))
+        
+        OneOrMore(attr_expr).parseString("shape: SQUARE color: BLACK posn: upper left").pprint()
+    prints::
+        [['shape', 'SQUARE'], ['color', 'BLACK'], ['posn', 'upper left']]
+    """
+    def __init__( self, expr ):
+        super(FollowedBy,self).__init__(expr)
+        self.mayReturnEmpty = True
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        self.expr.tryParse( instring, loc )
+        return loc, []
+
+
+class NotAny(ParseElementEnhance):
+    """
+    Lookahead to disallow matching with the given parse expression.  C{NotAny}
+    does I{not} advance the parsing position within the input string, it only
+    verifies that the specified parse expression does I{not} match at the current
+    position.  Also, C{NotAny} does I{not} skip over leading whitespace. C{NotAny}
+    always returns a null token list.  May be constructed using the '~' operator.
+
+    Example::
+        
+    """
+    def __init__( self, expr ):
+        super(NotAny,self).__init__(expr)
+        #~ self.leaveWhitespace()
+        self.skipWhitespace = False  # do NOT use self.leaveWhitespace(), don't want to propagate to exprs
+        self.mayReturnEmpty = True
+        self.errmsg = "Found unwanted token, "+_ustr(self.expr)
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        if self.expr.canParseNext(instring, loc):
+            raise ParseException(instring, loc, self.errmsg, self)
+        return loc, []
+
+    def __str__( self ):
+        if hasattr(self,"name"):
+            return self.name
+
+        if self.strRepr is None:
+            self.strRepr = "~{" + _ustr(self.expr) + "}"
+
+        return self.strRepr
+
+class _MultipleMatch(ParseElementEnhance):
+    def __init__( self, expr, stopOn=None):
+        super(_MultipleMatch, self).__init__(expr)
+        self.saveAsList = True
+        ender = stopOn
+        if isinstance(ender, basestring):
+            ender = ParserElement._literalStringClass(ender)
+        self.not_ender = ~ender if ender is not None else None
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        self_expr_parse = self.expr._parse
+        self_skip_ignorables = self._skipIgnorables
+        check_ender = self.not_ender is not None
+        if check_ender:
+            try_not_ender = self.not_ender.tryParse
+        
+        # must be at least one (but first see if we are the stopOn sentinel;
+        # if so, fail)
+        if check_ender:
+            try_not_ender(instring, loc)
+        loc, tokens = self_expr_parse( instring, loc, doActions, callPreParse=False )
+        try:
+            hasIgnoreExprs = (not not self.ignoreExprs)
+            while 1:
+                if check_ender:
+                    try_not_ender(instring, loc)
+                if hasIgnoreExprs:
+                    preloc = self_skip_ignorables( instring, loc )
+                else:
+                    preloc = loc
+                loc, tmptokens = self_expr_parse( instring, preloc, doActions )
+                if tmptokens or tmptokens.haskeys():
+                    tokens += tmptokens
+        except (ParseException,IndexError):
+            pass
+
+        return loc, tokens
+        
+class OneOrMore(_MultipleMatch):
+    """
+    Repetition of one or more of the given expression.
+    
+    Parameters:
+     - expr - expression that must match one or more times
+     - stopOn - (default=C{None}) - expression for a terminating sentinel
+          (only required if the sentinel would ordinarily match the repetition 
+          expression)          
+
+    Example::
+        data_word = Word(alphas)
+        label = data_word + FollowedBy(':')
+        attr_expr = Group(label + Suppress(':') + OneOrMore(data_word).setParseAction(' '.join))
+
+        text = "shape: SQUARE posn: upper left color: BLACK"
+        OneOrMore(attr_expr).parseString(text).pprint()  # Fail! read 'color' as data instead of next label -> [['shape', 'SQUARE color']]
+
+        # use stopOn attribute for OneOrMore to avoid reading label string as part of the data
+        attr_expr = Group(label + Suppress(':') + OneOrMore(data_word, stopOn=label).setParseAction(' '.join))
+        OneOrMore(attr_expr).parseString(text).pprint() # Better -> [['shape', 'SQUARE'], ['posn', 'upper left'], ['color', 'BLACK']]
+        
+        # could also be written as
+        (attr_expr * (1,)).parseString(text).pprint()
+    """
+
+    def __str__( self ):
+        if hasattr(self,"name"):
+            return self.name
+
+        if self.strRepr is None:
+            self.strRepr = "{" + _ustr(self.expr) + "}..."
+
+        return self.strRepr
+
+class ZeroOrMore(_MultipleMatch):
+    """
+    Optional repetition of zero or more of the given expression.
+    
+    Parameters:
+     - expr - expression that must match zero or more times
+     - stopOn - (default=C{None}) - expression for a terminating sentinel
+          (only required if the sentinel would ordinarily match the repetition 
+          expression)          
+
+    Example: similar to L{OneOrMore}
+    """
+    def __init__( self, expr, stopOn=None):
+        super(ZeroOrMore,self).__init__(expr, stopOn=stopOn)
+        self.mayReturnEmpty = True
+        
+    def parseImpl( self, instring, loc, doActions=True ):
+        try:
+            return super(ZeroOrMore, self).parseImpl(instring, loc, doActions)
+        except (ParseException,IndexError):
+            return loc, []
+
+    def __str__( self ):
+        if hasattr(self,"name"):
+            return self.name
+
+        if self.strRepr is None:
+            self.strRepr = "[" + _ustr(self.expr) + "]..."
+
+        return self.strRepr
+
+class _NullToken(object):
+    def __bool__(self):
+        return False
+    __nonzero__ = __bool__
+    def __str__(self):
+        return ""
+
+_optionalNotMatched = _NullToken()
+class Optional(ParseElementEnhance):
+    """
+    Optional matching of the given expression.
+
+    Parameters:
+     - expr - expression that must match zero or more times
+     - default (optional) - value to be returned if the optional expression is not found.
+
+    Example::
+        # US postal code can be a 5-digit zip, plus optional 4-digit qualifier
+        zip = Combine(Word(nums, exact=5) + Optional('-' + Word(nums, exact=4)))
+        zip.runTests('''
+            # traditional ZIP code
+            12345
+            
+            # ZIP+4 form
+            12101-0001
+            
+            # invalid ZIP
+            98765-
+            ''')
+    prints::
+        # traditional ZIP code
+        12345
+        ['12345']
+
+        # ZIP+4 form
+        12101-0001
+        ['12101-0001']
+
+        # invalid ZIP
+        98765-
+             ^
+        FAIL: Expected end of text (at char 5), (line:1, col:6)
+    """
+    def __init__( self, expr, default=_optionalNotMatched ):
+        super(Optional,self).__init__( expr, savelist=False )
+        self.saveAsList = self.expr.saveAsList
+        self.defaultValue = default
+        self.mayReturnEmpty = True
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        try:
+            loc, tokens = self.expr._parse( instring, loc, doActions, callPreParse=False )
+        except (ParseException,IndexError):
+            if self.defaultValue is not _optionalNotMatched:
+                if self.expr.resultsName:
+                    tokens = ParseResults([ self.defaultValue ])
+                    tokens[self.expr.resultsName] = self.defaultValue
+                else:
+                    tokens = [ self.defaultValue ]
+            else:
+                tokens = []
+        return loc, tokens
+
+    def __str__( self ):
+        if hasattr(self,"name"):
+            return self.name
+
+        if self.strRepr is None:
+            self.strRepr = "[" + _ustr(self.expr) + "]"
+
+        return self.strRepr
+
+class SkipTo(ParseElementEnhance):
+    """
+    Token for skipping over all undefined text until the matched expression is found.
+
+    Parameters:
+     - expr - target expression marking the end of the data to be skipped
+     - include - (default=C{False}) if True, the target expression is also parsed 
+          (the skipped text and target expression are returned as a 2-element list).
+     - ignore - (default=C{None}) used to define grammars (typically quoted strings and 
+          comments) that might contain false matches to the target expression
+     - failOn - (default=C{None}) define expressions that are not allowed to be 
+          included in the skipped test; if found before the target expression is found, 
+          the SkipTo is not a match
+
+    Example::
+        report = '''
+            Outstanding Issues Report - 1 Jan 2000
+
+               # | Severity | Description                               |  Days Open
+            -----+----------+-------------------------------------------+-----------
+             101 | Critical | Intermittent system crash                 |          6
+              94 | Cosmetic | Spelling error on Login ('log|n')         |         14
+              79 | Minor    | System slow when running too many reports |         47
+            '''
+        integer = Word(nums)
+        SEP = Suppress('|')
+        # use SkipTo to simply match everything up until the next SEP
+        # - ignore quoted strings, so that a '|' character inside a quoted string does not match
+        # - parse action will call token.strip() for each matched token, i.e., the description body
+        string_data = SkipTo(SEP, ignore=quotedString)
+        string_data.setParseAction(tokenMap(str.strip))
+        ticket_expr = (integer("issue_num") + SEP 
+                      + string_data("sev") + SEP 
+                      + string_data("desc") + SEP 
+                      + integer("days_open"))
+        
+        for tkt in ticket_expr.searchString(report):
+            print tkt.dump()
+    prints::
+        ['101', 'Critical', 'Intermittent system crash', '6']
+        - days_open: 6
+        - desc: Intermittent system crash
+        - issue_num: 101
+        - sev: Critical
+        ['94', 'Cosmetic', "Spelling error on Login ('log|n')", '14']
+        - days_open: 14
+        - desc: Spelling error on Login ('log|n')
+        - issue_num: 94
+        - sev: Cosmetic
+        ['79', 'Minor', 'System slow when running too many reports', '47']
+        - days_open: 47
+        - desc: System slow when running too many reports
+        - issue_num: 79
+        - sev: Minor
+    """
+    def __init__( self, other, include=False, ignore=None, failOn=None ):
+        super( SkipTo, self ).__init__( other )
+        self.ignoreExpr = ignore
+        self.mayReturnEmpty = True
+        self.mayIndexError = False
+        self.includeMatch = include
+        self.asList = False
+        if isinstance(failOn, basestring):
+            self.failOn = ParserElement._literalStringClass(failOn)
+        else:
+            self.failOn = failOn
+        self.errmsg = "No match found for "+_ustr(self.expr)
+
+    def parseImpl( self, instring, loc, doActions=True ):
+        startloc = loc
+        instrlen = len(instring)
+        expr = self.expr
+        expr_parse = self.expr._parse
+        self_failOn_canParseNext = self.failOn.canParseNext if self.failOn is not None else None
+        self_ignoreExpr_tryParse = self.ignoreExpr.tryParse if self.ignoreExpr is not None else None
+        
+        tmploc = loc
+        while tmploc <= instrlen:
+            if self_failOn_canParseNext is not None:
+                # break if failOn expression matches
+                if self_failOn_canParseNext(instring, tmploc):
+                    break
+                    
+            if self_ignoreExpr_tryParse is not None:
+                # advance past ignore expressions
+                while 1:
+                    try:
+                        tmploc = self_ignoreExpr_tryParse(instring, tmploc)
+                    except ParseBaseException:
+                        break
+            
+            try:
+                expr_parse(instring, tmploc, doActions=False, callPreParse=False)
+            except (ParseException, IndexError):
+                # no match, advance loc in string
+                tmploc += 1
+            else:
+                # matched skipto expr, done
+                break
+
+        else:
+            # ran off the end of the input string without matching skipto expr, fail
+            raise ParseException(instring, loc, self.errmsg, self)
+
+        # build up return values
+        loc = tmploc
+        skiptext = instring[startloc:loc]
+        skipresult = ParseResults(skiptext)
+        
+        if self.includeMatch:
+            loc, mat = expr_parse(instring,loc,doActions,callPreParse=False)
+            skipresult += mat
+
+        return loc, skipresult
+
+class Forward(ParseElementEnhance):
+    """
+    Forward declaration of an expression to be defined later -
+    used for recursive grammars, such as algebraic infix notation.
+    When the expression is known, it is assigned to the C{Forward} variable using the '<<' operator.
+
+    Note: take care when assigning to C{Forward} not to overlook precedence of operators.
+    Specifically, '|' has a lower precedence than '<<', so that::
+        fwdExpr << a | b | c
+    will actually be evaluated as::
+        (fwdExpr << a) | b | c
+    thereby leaving b and c out as parseable alternatives.  It is recommended that you
+    explicitly group the values inserted into the C{Forward}::
+        fwdExpr << (a | b | c)
+    Converting to use the '<<=' operator instead will avoid this problem.
+
+    See L{ParseResults.pprint} for an example of a recursive parser created using
+    C{Forward}.
+    """
+    def __init__( self, other=None ):
+        super(Forward,self).__init__( other, savelist=False )
+
+    def __lshift__( self, other ):
+        if isinstance( other, basestring ):
+            other = ParserElement._literalStringClass(other)
+        self.expr = other
+        self.strRepr = None
+        self.mayIndexError = self.expr.mayIndexError
+        self.mayReturnEmpty = self.expr.mayReturnEmpty
+        self.setWhitespaceChars( self.expr.whiteChars )
+        self.skipWhitespace = self.expr.skipWhitespace
+        self.saveAsList = self.expr.saveAsList
+        self.ignoreExprs.extend(self.expr.ignoreExprs)
+        return self
+        
+    def __ilshift__(self, other):
+        return self << other
+    
+    def leaveWhitespace( self ):
+        self.skipWhitespace = False
+        return self
+
+    def streamline( self ):
+        if not self.streamlined:
+            self.streamlined = True
+            if self.expr is not None:
+                self.expr.streamline()
+        return self
+
+    def validate( self, validateTrace=[] ):
+        if self not in validateTrace:
+            tmp = validateTrace[:]+[self]
+            if self.expr is not None:
+                self.expr.validate(tmp)
+        self.checkRecursion([])
+
+    def __str__( self ):
+        if hasattr(self,"name"):
+            return self.name
+        return self.__class__.__name__ + ": ..."
+
+        # stubbed out for now - creates awful memory and perf issues
+        self._revertClass = self.__class__
+        self.__class__ = _ForwardNoRecurse
+        try:
+            if self.expr is not None:
+                retString = _ustr(self.expr)
+            else:
+                retString = "None"
+        finally:
+            self.__class__ = self._revertClass
+        return self.__class__.__name__ + ": " + retString
+
+    def copy(self):
+        if self.expr is not None:
+            return super(Forward,self).copy()
+        else:
+            ret = Forward()
+            ret <<= self
+            return ret
+
+class _ForwardNoRecurse(Forward):
+    def __str__( self ):
+        return "..."
+
+class TokenConverter(ParseElementEnhance):
+    """
+    Abstract subclass of C{ParseExpression}, for converting parsed results.
+    """
+    def __init__( self, expr, savelist=False ):
+        super(TokenConverter,self).__init__( expr )#, savelist )
+        self.saveAsList = False
+
+class Combine(TokenConverter):
+    """
+    Converter to concatenate all matching tokens to a single string.
+    By default, the matching patterns must also be contiguous in the input string;
+    this can be disabled by specifying C{'adjacent=False'} in the constructor.
+
+    Example::
+        real = Word(nums) + '.' + Word(nums)
+        print(real.parseString('3.1416')) # -> ['3', '.', '1416']
+        # will also erroneously match the following
+        print(real.parseString('3. 1416')) # -> ['3', '.', '1416']
+
+        real = Combine(Word(nums) + '.' + Word(nums))
+        print(real.parseString('3.1416')) # -> ['3.1416']
+        # no match when there are internal spaces
+        print(real.parseString('3. 1416')) # -> Exception: Expected W:(0123...)
+    """
+    def __init__( self, expr, joinString="", adjacent=True ):
+        super(Combine,self).__init__( expr )
+        # suppress whitespace-stripping in contained parse expressions, but re-enable it on the Combine itself
+        if adjacent:
+            self.leaveWhitespace()
+        self.adjacent = adjacent
+        self.skipWhitespace = True
+        self.joinString = joinString
+        self.callPreparse = True
+
+    def ignore( self, other ):
+        if self.adjacent:
+            ParserElement.ignore(self, other)
+        else:
+            super( Combine, self).ignore( other )
+        return self
+
+    def postParse( self, instring, loc, tokenlist ):
+        retToks = tokenlist.copy()
+        del retToks[:]
+        retToks += ParseResults([ "".join(tokenlist._asStringList(self.joinString)) ], modal=self.modalResults)
+
+        if self.resultsName and retToks.haskeys():
+            return [ retToks ]
+        else:
+            return retToks
+
+class Group(TokenConverter):
+    """
+    Converter to return the matched tokens as a list - useful for returning tokens of C{L{ZeroOrMore}} and C{L{OneOrMore}} expressions.
+
+    Example::
+        ident = Word(alphas)
+        num = Word(nums)
+        term = ident | num
+        func = ident + Optional(delimitedList(term))
+        print(func.parseString("fn a,b,100"))  # -> ['fn', 'a', 'b', '100']
+
+        func = ident + Group(Optional(delimitedList(term)))
+        print(func.parseString("fn a,b,100"))  # -> ['fn', ['a', 'b', '100']]
+    """
+    def __init__( self, expr ):
+        super(Group,self).__init__( expr )
+        self.saveAsList = True
+
+    def postParse( self, instring, loc, tokenlist ):
+        return [ tokenlist ]
+
+class Dict(TokenConverter):
+    """
+    Converter to return a repetitive expression as a list, but also as a dictionary.
+    Each element can also be referenced using the first token in the expression as its key.
+    Useful for tabular report scraping when the first column can be used as a item key.
+
+    Example::
+        data_word = Word(alphas)
+        label = data_word + FollowedBy(':')
+        attr_expr = Group(label + Suppress(':') + OneOrMore(data_word).setParseAction(' '.join))
+
+        text = "shape: SQUARE posn: upper left color: light blue texture: burlap"
+        attr_expr = (label + Suppress(':') + OneOrMore(data_word, stopOn=label).setParseAction(' '.join))
+        
+        # print attributes as plain groups
+        print(OneOrMore(attr_expr).parseString(text).dump())
+        
+        # instead of OneOrMore(expr), parse using Dict(OneOrMore(Group(expr))) - Dict will auto-assign names
+        result = Dict(OneOrMore(Group(attr_expr))).parseString(text)
+        print(result.dump())
+        
+        # access named fields as dict entries, or output as dict
+        print(result['shape'])        
+        print(result.asDict())
+    prints::
+        ['shape', 'SQUARE', 'posn', 'upper left', 'color', 'light blue', 'texture', 'burlap']
+
+        [['shape', 'SQUARE'], ['posn', 'upper left'], ['color', 'light blue'], ['texture', 'burlap']]
+        - color: light blue
+        - posn: upper left
+        - shape: SQUARE
+        - texture: burlap
+        SQUARE
+        {'color': 'light blue', 'posn': 'upper left', 'texture': 'burlap', 'shape': 'SQUARE'}
+    See more examples at L{ParseResults} of accessing fields by results name.
+    """
+    def __init__( self, expr ):
+        super(Dict,self).__init__( expr )
+        self.saveAsList = True
+
+    def postParse( self, instring, loc, tokenlist ):
+        for i,tok in enumerate(tokenlist):
+            if len(tok) == 0:
+                continue
+            ikey = tok[0]
+            if isinstance(ikey,int):
+                ikey = _ustr(tok[0]).strip()
+            if len(tok)==1:
+                tokenlist[ikey] = _ParseResultsWithOffset("",i)
+            elif len(tok)==2 and not isinstance(tok[1],ParseResults):
+                tokenlist[ikey] = _ParseResultsWithOffset(tok[1],i)
+            else:
+                dictvalue = tok.copy() #ParseResults(i)
+                del dictvalue[0]
+                if len(dictvalue)!= 1 or (isinstance(dictvalue,ParseResults) and dictvalue.haskeys()):
+                    tokenlist[ikey] = _ParseResultsWithOffset(dictvalue,i)
+                else:
+                    tokenlist[ikey] = _ParseResultsWithOffset(dictvalue[0],i)
+
+        if self.resultsName:
+            return [ tokenlist ]
+        else:
+            return tokenlist
+
+
+class Suppress(TokenConverter):
+    """
+    Converter for ignoring the results of a parsed expression.
+
+    Example::
+        source = "a, b, c,d"
+        wd = Word(alphas)
+        wd_list1 = wd + ZeroOrMore(',' + wd)
+        print(wd_list1.parseString(source))
+
+        # often, delimiters that are useful during parsing are just in the
+        # way afterward - use Suppress to keep them out of the parsed output
+        wd_list2 = wd + ZeroOrMore(Suppress(',') + wd)
+        print(wd_list2.parseString(source))
+    prints::
+        ['a', ',', 'b', ',', 'c', ',', 'd']
+        ['a', 'b', 'c', 'd']
+    (See also L{delimitedList}.)
+    """
+    def postParse( self, instring, loc, tokenlist ):
+        return []
+
+    def suppress( self ):
+        return self
+
+
+class OnlyOnce(object):
+    """
+    Wrapper for parse actions, to ensure they are only called once.
+    """
+    def __init__(self, methodCall):
+        self.callable = _trim_arity(methodCall)
+        self.called = False
+    def __call__(self,s,l,t):
+        if not self.called:
+            results = self.callable(s,l,t)
+            self.called = True
+            return results
+        raise ParseException(s,l,"")
+    def reset(self):
+        self.called = False
+
+def traceParseAction(f):
+    """
+    Decorator for debugging parse actions. 
+    
+    When the parse action is called, this decorator will print C{">> entering I{method-name}(line:I{current_source_line}, I{parse_location}, I{matched_tokens})".}
+    When the parse action completes, the decorator will print C{"<<"} followed by the returned value, or any exception that the parse action raised.
+
+    Example::
+        wd = Word(alphas)
+
+        @traceParseAction
+        def remove_duplicate_chars(tokens):
+            return ''.join(sorted(set(''.join(tokens))))
+
+        wds = OneOrMore(wd).setParseAction(remove_duplicate_chars)
+        print(wds.parseString("slkdjs sld sldd sdlf sdljf"))
+    prints::
+        >>entering remove_duplicate_chars(line: 'slkdjs sld sldd sdlf sdljf', 0, (['slkdjs', 'sld', 'sldd', 'sdlf', 'sdljf'], {}))
+        <<leaving remove_duplicate_chars (ret: 'dfjkls')
+        ['dfjkls']
+    """
+    f = _trim_arity(f)
+    def z(*paArgs):
+        thisFunc = f.__name__
+        s,l,t = paArgs[-3:]
+        if len(paArgs)>3:
+            thisFunc = paArgs[0].__class__.__name__ + '.' + thisFunc
+        sys.stderr.write( ">>entering %s(line: '%s', %d, %r)\n" % (thisFunc,line(l,s),l,t) )
+        try:
+            ret = f(*paArgs)
+        except Exception as exc:
+            sys.stderr.write( "<<leaving %s (exception: %s)\n" % (thisFunc,exc) )
+            raise
+        sys.stderr.write( "<<leaving %s (ret: %r)\n" % (thisFunc,ret) )
+        return ret
+    try:
+        z.__name__ = f.__name__
+    except AttributeError:
+        pass
+    return z
+
+#
+# global helpers
+#
+def delimitedList( expr, delim=",", combine=False ):
+    """
+    Helper to define a delimited list of expressions - the delimiter defaults to ','.
+    By default, the list elements and delimiters can have intervening whitespace, and
+    comments, but this can be overridden by passing C{combine=True} in the constructor.
+    If C{combine} is set to C{True}, the matching tokens are returned as a single token
+    string, with the delimiters included; otherwise, the matching tokens are returned
+    as a list of tokens, with the delimiters suppressed.
+
+    Example::
+        delimitedList(Word(alphas)).parseString("aa,bb,cc") # -> ['aa', 'bb', 'cc']
+        delimitedList(Word(hexnums), delim=':', combine=True).parseString("AA:BB:CC:DD:EE") # -> ['AA:BB:CC:DD:EE']
+    """
+    dlName = _ustr(expr)+" ["+_ustr(delim)+" "+_ustr(expr)+"]..."
+    if combine:
+        return Combine( expr + ZeroOrMore( delim + expr ) ).setName(dlName)
+    else:
+        return ( expr + ZeroOrMore( Suppress( delim ) + expr ) ).setName(dlName)
+
+def countedArray( expr, intExpr=None ):
+    """
+    Helper to define a counted list of expressions.
+    This helper defines a pattern of the form::
+        integer expr expr expr...
+    where the leading integer tells how many expr expressions follow.
+    The matched tokens returns the array of expr tokens as a list - the leading count token is suppressed.
+    
+    If C{intExpr} is specified, it should be a pyparsing expression that produces an integer value.
+
+    Example::
+        countedArray(Word(alphas)).parseString('2 ab cd ef')  # -> ['ab', 'cd']
+
+        # in this parser, the leading integer value is given in binary,
+        # '10' indicating that 2 values are in the array
+        binaryConstant = Word('01').setParseAction(lambda t: int(t[0], 2))
+        countedArray(Word(alphas), intExpr=binaryConstant).parseString('10 ab cd ef')  # -> ['ab', 'cd']
+    """
+    arrayExpr = Forward()
+    def countFieldParseAction(s,l,t):
+        n = t[0]
+        arrayExpr << (n and Group(And([expr]*n)) or Group(empty))
+        return []
+    if intExpr is None:
+        intExpr = Word(nums).setParseAction(lambda t:int(t[0]))
+    else:
+        intExpr = intExpr.copy()
+    intExpr.setName("arrayLen")
+    intExpr.addParseAction(countFieldParseAction, callDuringTry=True)
+    return ( intExpr + arrayExpr ).setName('(len) ' + _ustr(expr) + '...')
+
+def _flatten(L):
+    ret = []
+    for i in L:
+        if isinstance(i,list):
+            ret.extend(_flatten(i))
+        else:
+            ret.append(i)
+    return ret
+
+def matchPreviousLiteral(expr):
+    """
+    Helper to define an expression that is indirectly defined from
+    the tokens matched in a previous expression, that is, it looks
+    for a 'repeat' of a previous expression.  For example::
+        first = Word(nums)
+        second = matchPreviousLiteral(first)
+        matchExpr = first + ":" + second
+    will match C{"1:1"}, but not C{"1:2"}.  Because this matches a
+    previous literal, will also match the leading C{"1:1"} in C{"1:10"}.
+    If this is not desired, use C{matchPreviousExpr}.
+    Do I{not} use with packrat parsing enabled.
+    """
+    rep = Forward()
+    def copyTokenToRepeater(s,l,t):
+        if t:
+            if len(t) == 1:
+                rep << t[0]
+            else:
+                # flatten t tokens
+                tflat = _flatten(t.asList())
+                rep << And(Literal(tt) for tt in tflat)
+        else:
+            rep << Empty()
+    expr.addParseAction(copyTokenToRepeater, callDuringTry=True)
+    rep.setName('(prev) ' + _ustr(expr))
+    return rep
+
+def matchPreviousExpr(expr):
+    """
+    Helper to define an expression that is indirectly defined from
+    the tokens matched in a previous expression, that is, it looks
+    for a 'repeat' of a previous expression.  For example::
+        first = Word(nums)
+        second = matchPreviousExpr(first)
+        matchExpr = first + ":" + second
+    will match C{"1:1"}, but not C{"1:2"}.  Because this matches by
+    expressions, will I{not} match the leading C{"1:1"} in C{"1:10"};
+    the expressions are evaluated first, and then compared, so
+    C{"1"} is compared with C{"10"}.
+    Do I{not} use with packrat parsing enabled.
+    """
+    rep = Forward()
+    e2 = expr.copy()
+    rep <<= e2
+    def copyTokenToRepeater(s,l,t):
+        matchTokens = _flatten(t.asList())
+        def mustMatchTheseTokens(s,l,t):
+            theseTokens = _flatten(t.asList())
+            if  theseTokens != matchTokens:
+                raise ParseException("",0,"")
+        rep.setParseAction( mustMatchTheseTokens, callDuringTry=True )
+    expr.addParseAction(copyTokenToRepeater, callDuringTry=True)
+    rep.setName('(prev) ' + _ustr(expr))
+    return rep
+
+def _escapeRegexRangeChars(s):
+    #~  escape these chars: ^-]
+    for c in r"\^-]":
+        s = s.replace(c,_bslash+c)
+    s = s.replace("\n",r"\n")
+    s = s.replace("\t",r"\t")
+    return _ustr(s)
+
+def oneOf( strs, caseless=False, useRegex=True ):
+    """
+    Helper to quickly define a set of alternative Literals, and makes sure to do
+    longest-first testing when there is a conflict, regardless of the input order,
+    but returns a C{L{MatchFirst}} for best performance.
+
+    Parameters:
+     - strs - a string of space-delimited literals, or a collection of string literals
+     - caseless - (default=C{False}) - treat all literals as caseless
+     - useRegex - (default=C{True}) - as an optimization, will generate a Regex
+          object; otherwise, will generate a C{MatchFirst} object (if C{caseless=True}, or
+          if creating a C{Regex} raises an exception)
+
+    Example::
+        comp_oper = oneOf("< = > <= >= !=")
+        var = Word(alphas)
+        number = Word(nums)
+        term = var | number
+        comparison_expr = term + comp_oper + term
+        print(comparison_expr.searchString("B = 12  AA=23 B<=AA AA>12"))
+    prints::
+        [['B', '=', '12'], ['AA', '=', '23'], ['B', '<=', 'AA'], ['AA', '>', '12']]
+    """
+    if caseless:
+        isequal = ( lambda a,b: a.upper() == b.upper() )
+        masks = ( lambda a,b: b.upper().startswith(a.upper()) )
+        parseElementClass = CaselessLiteral
+    else:
+        isequal = ( lambda a,b: a == b )
+        masks = ( lambda a,b: b.startswith(a) )
+        parseElementClass = Literal
+
+    symbols = []
+    if isinstance(strs,basestring):
+        symbols = strs.split()
+    elif isinstance(strs, Iterable):
+        symbols = list(strs)
+    else:
+        warnings.warn("Invalid argument to oneOf, expected string or iterable",
+                SyntaxWarning, stacklevel=2)
+    if not symbols:
+        return NoMatch()
+
+    i = 0
+    while i < len(symbols)-1:
+        cur = symbols[i]
+        for j,other in enumerate(symbols[i+1:]):
+            if ( isequal(other, cur) ):
+                del symbols[i+j+1]
+                break
+            elif ( masks(cur, other) ):
+                del symbols[i+j+1]
+                symbols.insert(i,other)
+                cur = other
+                break
+        else:
+            i += 1
+
+    if not caseless and useRegex:
+        #~ print (strs,"->", "|".join( [ _escapeRegexChars(sym) for sym in symbols] ))
+        try:
+            if len(symbols)==len("".join(symbols)):
+                return Regex( "[%s]" % "".join(_escapeRegexRangeChars(sym) for sym in symbols) ).setName(' | '.join(symbols))
+            else:
+                return Regex( "|".join(re.escape(sym) for sym in symbols) ).setName(' | '.join(symbols))
+        except Exception:
+            warnings.warn("Exception creating Regex for oneOf, building MatchFirst",
+                    SyntaxWarning, stacklevel=2)
+
+
+    # last resort, just use MatchFirst
+    return MatchFirst(parseElementClass(sym) for sym in symbols).setName(' | '.join(symbols))
+
+def dictOf( key, value ):
+    """
+    Helper to easily and clearly define a dictionary by specifying the respective patterns
+    for the key and value.  Takes care of defining the C{L{Dict}}, C{L{ZeroOrMore}}, and C{L{Group}} tokens
+    in the proper order.  The key pattern can include delimiting markers or punctuation,
+    as long as they are suppressed, thereby leaving the significant key text.  The value
+    pattern can include named results, so that the C{Dict} results can include named token
+    fields.
+
+    Example::
+        text = "shape: SQUARE posn: upper left color: light blue texture: burlap"
+        attr_expr = (label + Suppress(':') + OneOrMore(data_word, stopOn=label).setParseAction(' '.join))
+        print(OneOrMore(attr_expr).parseString(text).dump())
+        
+        attr_label = label
+        attr_value = Suppress(':') + OneOrMore(data_word, stopOn=label).setParseAction(' '.join)
+
+        # similar to Dict, but simpler call format
+        result = dictOf(attr_label, attr_value).parseString(text)
+        print(result.dump())
+        print(result['shape'])
+        print(result.shape)  # object attribute access works too
+        print(result.asDict())
+    prints::
+        [['shape', 'SQUARE'], ['posn', 'upper left'], ['color', 'light blue'], ['texture', 'burlap']]
+        - color: light blue
+        - posn: upper left
+        - shape: SQUARE
+        - texture: burlap
+        SQUARE
+        SQUARE
+        {'color': 'light blue', 'shape': 'SQUARE', 'posn': 'upper left', 'texture': 'burlap'}
+    """
+    return Dict( ZeroOrMore( Group ( key + value ) ) )
+
+def originalTextFor(expr, asString=True):
+    """
+    Helper to return the original, untokenized text for a given expression.  Useful to
+    restore the parsed fields of an HTML start tag into the raw tag text itself, or to
+    revert separate tokens with intervening whitespace back to the original matching
+    input text. By default, returns astring containing the original parsed text.  
+       
+    If the optional C{asString} argument is passed as C{False}, then the return value is a 
+    C{L{ParseResults}} containing any results names that were originally matched, and a 
+    single token containing the original matched text from the input string.  So if 
+    the expression passed to C{L{originalTextFor}} contains expressions with defined
+    results names, you must set C{asString} to C{False} if you want to preserve those
+    results name values.
+
+    Example::
+        src = "this is test <b> bold <i>text</i> </b> normal text "
+        for tag in ("b","i"):
+            opener,closer = makeHTMLTags(tag)
+            patt = originalTextFor(opener + SkipTo(closer) + closer)
+            print(patt.searchString(src)[0])
+    prints::
+        ['<b> bold <i>text</i> </b>']
+        ['<i>text</i>']
+    """
+    locMarker = Empty().setParseAction(lambda s,loc,t: loc)
+    endlocMarker = locMarker.copy()
+    endlocMarker.callPreparse = False
+    matchExpr = locMarker("_original_start") + expr + endlocMarker("_original_end")
+    if asString:
+        extractText = lambda s,l,t: s[t._original_start:t._original_end]
+    else:
+        def extractText(s,l,t):
+            t[:] = [s[t.pop('_original_start'):t.pop('_original_end')]]
+    matchExpr.setParseAction(extractText)
+    matchExpr.ignoreExprs = expr.ignoreExprs
+    return matchExpr
+
+def ungroup(expr): 
+    """
+    Helper to undo pyparsing's default grouping of And expressions, even
+    if all but one are non-empty.
+    """
+    return TokenConverter(expr).setParseAction(lambda t:t[0])
+
+def locatedExpr(expr):
+    """
+    Helper to decorate a returned token with its starting and ending locations in the input string.
+    This helper adds the following results names:
+     - locn_start = location where matched expression begins
+     - locn_end = location where matched expression ends
+     - value = the actual parsed results
+
+    Be careful if the input text contains C{<TAB>} characters, you may want to call
+    C{L{ParserElement.parseWithTabs}}
+
+    Example::
+        wd = Word(alphas)
+        for match in locatedExpr(wd).searchString("ljsdf123lksdjjf123lkkjj1222"):
+            print(match)
+    prints::
+        [[0, 'ljsdf', 5]]
+        [[8, 'lksdjjf', 15]]
+        [[18, 'lkkjj', 23]]
+    """
+    locator = Empty().setParseAction(lambda s,l,t: l)
+    return Group(locator("locn_start") + expr("value") + locator.copy().leaveWhitespace()("locn_end"))
+
+
+# convenience constants for positional expressions
+empty       = Empty().setName("empty")
+lineStart   = LineStart().setName("lineStart")
+lineEnd     = LineEnd().setName("lineEnd")
+stringStart = StringStart().setName("stringStart")
+stringEnd   = StringEnd().setName("stringEnd")
+
+_escapedPunc = Word( _bslash, r"\[]-*.$+^?()~ ", exact=2 ).setParseAction(lambda s,l,t:t[0][1])
+_escapedHexChar = Regex(r"\\0?[xX][0-9a-fA-F]+").setParseAction(lambda s,l,t:unichr(int(t[0].lstrip(r'\0x'),16)))
+_escapedOctChar = Regex(r"\\0[0-7]+").setParseAction(lambda s,l,t:unichr(int(t[0][1:],8)))
+_singleChar = _escapedPunc | _escapedHexChar | _escapedOctChar | CharsNotIn(r'\]', exact=1)
+_charRange = Group(_singleChar + Suppress("-") + _singleChar)
+_reBracketExpr = Literal("[") + Optional("^").setResultsName("negate") + Group( OneOrMore( _charRange | _singleChar ) ).setResultsName("body") + "]"
+
+def srange(s):
+    r"""
+    Helper to easily define string ranges for use in Word construction.  Borrows
+    syntax from regexp '[]' string range definitions::
+        srange("[0-9]")   -> "0123456789"
+        srange("[a-z]")   -> "abcdefghijklmnopqrstuvwxyz"
+        srange("[a-z$_]") -> "abcdefghijklmnopqrstuvwxyz$_"
+    The input string must be enclosed in []'s, and the returned string is the expanded
+    character set joined into a single string.
+    The values enclosed in the []'s may be:
+     - a single character
+     - an escaped character with a leading backslash (such as C{\-} or C{\]})
+     - an escaped hex character with a leading C{'\x'} (C{\x21}, which is a C{'!'} character) 
+         (C{\0x##} is also supported for backwards compatibility) 
+     - an escaped octal character with a leading C{'\0'} (C{\041}, which is a C{'!'} character)
+     - a range of any of the above, separated by a dash (C{'a-z'}, etc.)
+     - any combination of the above (C{'aeiouy'}, C{'a-zA-Z0-9_$'}, etc.)
+    """
+    _expanded = lambda p: p if not isinstance(p,ParseResults) else ''.join(unichr(c) for c in range(ord(p[0]),ord(p[1])+1))
+    try:
+        return "".join(_expanded(part) for part in _reBracketExpr.parseString(s).body)
+    except Exception:
+        return ""
+
+def matchOnlyAtCol(n):
+    """
+    Helper method for defining parse actions that require matching at a specific
+    column in the input text.
+    """
+    def verifyCol(strg,locn,toks):
+        if col(locn,strg) != n:
+            raise ParseException(strg,locn,"matched token not at column %d" % n)
+    return verifyCol
+
+def replaceWith(replStr):
+    """
+    Helper method for common parse actions that simply return a literal value.  Especially
+    useful when used with C{L{transformString<ParserElement.transformString>}()}.
+
+    Example::
+        num = Word(nums).setParseAction(lambda toks: int(toks[0]))
+        na = oneOf("N/A NA").setParseAction(replaceWith(math.nan))
+        term = na | num
+        
+        OneOrMore(term).parseString("324 234 N/A 234") # -> [324, 234, nan, 234]
+    """
+    return lambda s,l,t: [replStr]
+
+def removeQuotes(s,l,t):
+    """
+    Helper parse action for removing quotation marks from parsed quoted strings.
+
+    Example::
+        # by default, quotation marks are included in parsed results
+        quotedString.parseString("'Now is the Winter of our Discontent'") # -> ["'Now is the Winter of our Discontent'"]
+
+        # use removeQuotes to strip quotation marks from parsed results
+        quotedString.setParseAction(removeQuotes)
+        quotedString.parseString("'Now is the Winter of our Discontent'") # -> ["Now is the Winter of our Discontent"]
+    """
+    return t[0][1:-1]
+
+def tokenMap(func, *args):
+    """
+    Helper to define a parse action by mapping a function to all elements of a ParseResults list.If any additional 
+    args are passed, they are forwarded to the given function as additional arguments after
+    the token, as in C{hex_integer = Word(hexnums).setParseAction(tokenMap(int, 16))}, which will convert the
+    parsed data to an integer using base 16.
+
+    Example (compare the last to example in L{ParserElement.transformString}::
+        hex_ints = OneOrMore(Word(hexnums)).setParseAction(tokenMap(int, 16))
+        hex_ints.runTests('''
+            00 11 22 aa FF 0a 0d 1a
+            ''')
+        
+        upperword = Word(alphas).setParseAction(tokenMap(str.upper))
+        OneOrMore(upperword).runTests('''
+            my kingdom for a horse
+            ''')
+
+        wd = Word(alphas).setParseAction(tokenMap(str.title))
+        OneOrMore(wd).setParseAction(' '.join).runTests('''
+            now is the winter of our discontent made glorious summer by this sun of york
+            ''')
+    prints::
+        00 11 22 aa FF 0a 0d 1a
+        [0, 17, 34, 170, 255, 10, 13, 26]
+
+        my kingdom for a horse
+        ['MY', 'KINGDOM', 'FOR', 'A', 'HORSE']
+
+        now is the winter of our discontent made glorious summer by this sun of york
+        ['Now Is The Winter Of Our Discontent Made Glorious Summer By This Sun Of York']
+    """
+    def pa(s,l,t):
+        return [func(tokn, *args) for tokn in t]
+
+    try:
+        func_name = getattr(func, '__name__', 
+                            getattr(func, '__class__').__name__)
+    except Exception:
+        func_name = str(func)
+    pa.__name__ = func_name
+
+    return pa
+
+upcaseTokens = tokenMap(lambda t: _ustr(t).upper())
+"""(Deprecated) Helper parse action to convert tokens to upper case. Deprecated in favor of L{pyparsing_common.upcaseTokens}"""
+
+downcaseTokens = tokenMap(lambda t: _ustr(t).lower())
+"""(Deprecated) Helper parse action to convert tokens to lower case. Deprecated in favor of L{pyparsing_common.downcaseTokens}"""
+    
+def _makeTags(tagStr, xml):
+    """Internal helper to construct opening and closing tag expressions, given a tag name"""
+    if isinstance(tagStr,basestring):
+        resname = tagStr
+        tagStr = Keyword(tagStr, caseless=not xml)
+    else:
+        resname = tagStr.name
+
+    tagAttrName = Word(alphas,alphanums+"_-:")
+    if (xml):
+        tagAttrValue = dblQuotedString.copy().setParseAction( removeQuotes )
+        openTag = Suppress("<") + tagStr("tag") + \
+                Dict(ZeroOrMore(Group( tagAttrName + Suppress("=") + tagAttrValue ))) + \
+                Optional("/",default=[False]).setResultsName("empty").setParseAction(lambda s,l,t:t[0]=='/') + Suppress(">")
+    else:
+        printablesLessRAbrack = "".join(c for c in printables if c not in ">")
+        tagAttrValue = quotedString.copy().setParseAction( removeQuotes ) | Word(printablesLessRAbrack)
+        openTag = Suppress("<") + tagStr("tag") + \
+                Dict(ZeroOrMore(Group( tagAttrName.setParseAction(downcaseTokens) + \
+                Optional( Suppress("=") + tagAttrValue ) ))) + \
+                Optional("/",default=[False]).setResultsName("empty").setParseAction(lambda s,l,t:t[0]=='/') + Suppress(">")
+    closeTag = Combine(_L("</") + tagStr + ">")
+
+    openTag = openTag.setResultsName("start"+"".join(resname.replace(":"," ").title().split())).setName("<%s>" % resname)
+    closeTag = closeTag.setResultsName("end"+"".join(resname.replace(":"," ").title().split())).setName("</%s>" % resname)
+    openTag.tag = resname
+    closeTag.tag = resname
+    return openTag, closeTag
+
+def makeHTMLTags(tagStr):
+    """
+    Helper to construct opening and closing tag expressions for HTML, given a tag name. Matches
+    tags in either upper or lower case, attributes with namespaces and with quoted or unquoted values.
+
+    Example::
+        text = '<td>More info at the <a href="http://pyparsing.wikispaces.com">pyparsing</a> wiki page</td>'
+        # makeHTMLTags returns pyparsing expressions for the opening and closing tags as a 2-tuple
+        a,a_end = makeHTMLTags("A")
+        link_expr = a + SkipTo(a_end)("link_text") + a_end
+        
+        for link in link_expr.searchString(text):
+            # attributes in the <A> tag (like "href" shown here) are also accessible as named results
+            print(link.link_text, '->', link.href)
+    prints::
+        pyparsing -> http://pyparsing.wikispaces.com
+    """
+    return _makeTags( tagStr, False )
+
+def makeXMLTags(tagStr):
+    """
+    Helper to construct opening and closing tag expressions for XML, given a tag name. Matches
+    tags only in the given upper/lower case.
+
+    Example: similar to L{makeHTMLTags}
+    """
+    return _makeTags( tagStr, True )
+
+def withAttribute(*args,**attrDict):
+    """
+    Helper to create a validating parse action to be used with start tags created
+    with C{L{makeXMLTags}} or C{L{makeHTMLTags}}. Use C{withAttribute} to qualify a starting tag
+    with a required attribute value, to avoid false matches on common tags such as
+    C{<TD>} or C{<DIV>}.
+
+    Call C{withAttribute} with a series of attribute names and values. Specify the list
+    of filter attributes names and values as:
+     - keyword arguments, as in C{(align="right")}, or
+     - as an explicit dict with C{**} operator, when an attribute name is also a Python
+          reserved word, as in C{**{"class":"Customer", "align":"right"}}
+     - a list of name-value tuples, as in ( ("ns1:class", "Customer"), ("ns2:align","right") )
+    For attribute names with a namespace prefix, you must use the second form.  Attribute
+    names are matched insensitive to upper/lower case.
+       
+    If just testing for C{class} (with or without a namespace), use C{L{withClass}}.
+
+    To verify that the attribute exists, but without specifying a value, pass
+    C{withAttribute.ANY_VALUE} as the value.
+
+    Example::
+        html = '''
+            <div>
+            Some text
+            <div type="grid">1 4 0 1 0</div>
+            <div type="graph">1,3 2,3 1,1</div>
+            <div>this has no type</div>
+            </div>
+                
+        '''
+        div,div_end = makeHTMLTags("div")
+
+        # only match div tag having a type attribute with value "grid"
+        div_grid = div().setParseAction(withAttribute(type="grid"))
+        grid_expr = div_grid + SkipTo(div | div_end)("body")
+        for grid_header in grid_expr.searchString(html):
+            print(grid_header.body)
+        
+        # construct a match with any div tag having a type attribute, regardless of the value
+        div_any_type = div().setParseAction(withAttribute(type=withAttribute.ANY_VALUE))
+        div_expr = div_any_type + SkipTo(div | div_end)("body")
+        for div_header in div_expr.searchString(html):
+            print(div_header.body)
+    prints::
+        1 4 0 1 0
+
+        1 4 0 1 0
+        1,3 2,3 1,1
+    """
+    if args:
+        attrs = args[:]
+    else:
+        attrs = attrDict.items()
+    attrs = [(k,v) for k,v in attrs]
+    def pa(s,l,tokens):
+        for attrName,attrValue in attrs:
+            if attrName not in tokens:
+                raise ParseException(s,l,"no matching attribute " + attrName)
+            if attrValue != withAttribute.ANY_VALUE and tokens[attrName] != attrValue:
+                raise ParseException(s,l,"attribute '%s' has value '%s', must be '%s'" %
+                                            (attrName, tokens[attrName], attrValue))
+    return pa
+withAttribute.ANY_VALUE = object()
+
+def withClass(classname, namespace=''):
+    """
+    Simplified version of C{L{withAttribute}} when matching on a div class - made
+    difficult because C{class} is a reserved word in Python.
+
+    Example::
+        html = '''
+            <div>
+            Some text
+            <div class="grid">1 4 0 1 0</div>
+            <div class="graph">1,3 2,3 1,1</div>
+            <div>this &lt;div&gt; has no class</div>
+            </div>
+                
+        '''
+        div,div_end = makeHTMLTags("div")
+        div_grid = div().setParseAction(withClass("grid"))
+        
+        grid_expr = div_grid + SkipTo(div | div_end)("body")
+        for grid_header in grid_expr.searchString(html):
+            print(grid_header.body)
+        
+        div_any_type = div().setParseAction(withClass(withAttribute.ANY_VALUE))
+        div_expr = div_any_type + SkipTo(div | div_end)("body")
+        for div_header in div_expr.searchString(html):
+            print(div_header.body)
+    prints::
+        1 4 0 1 0
+
+        1 4 0 1 0
+        1,3 2,3 1,1
+    """
+    classattr = "%s:class" % namespace if namespace else "class"
+    return withAttribute(**{classattr : classname})        
+
+opAssoc = _Constants()
+opAssoc.LEFT = object()
+opAssoc.RIGHT = object()
+
+def infixNotation( baseExpr, opList, lpar=Suppress('('), rpar=Suppress(')') ):
+    """
+    Helper method for constructing grammars of expressions made up of
+    operators working in a precedence hierarchy.  Operators may be unary or
+    binary, left- or right-associative.  Parse actions can also be attached
+    to operator expressions. The generated parser will also recognize the use 
+    of parentheses to override operator precedences (see example below).
+    
+    Note: if you define a deep operator list, you may see performance issues
+    when using infixNotation. See L{ParserElement.enablePackrat} for a
+    mechanism to potentially improve your parser performance.
+
+    Parameters:
+     - baseExpr - expression representing the most basic element for the nested
+     - opList - list of tuples, one for each operator precedence level in the
+      expression grammar; each tuple is of the form
+      (opExpr, numTerms, rightLeftAssoc, parseAction), where:
+       - opExpr is the pyparsing expression for the operator;
+          may also be a string, which will be converted to a Literal;
+          if numTerms is 3, opExpr is a tuple of two expressions, for the
+          two operators separating the 3 terms
+       - numTerms is the number of terms for this operator (must
+          be 1, 2, or 3)
+       - rightLeftAssoc is the indicator whether the operator is
+          right or left associative, using the pyparsing-defined
+          constants C{opAssoc.RIGHT} and C{opAssoc.LEFT}.
+       - parseAction is the parse action to be associated with
+          expressions matching this operator expression (the
+          parse action tuple member may be omitted); if the parse action
+          is passed a tuple or list of functions, this is equivalent to
+          calling C{setParseAction(*fn)} (L{ParserElement.setParseAction})
+     - lpar - expression for matching left-parentheses (default=C{Suppress('(')})
+     - rpar - expression for matching right-parentheses (default=C{Suppress(')')})
+
+    Example::
+        # simple example of four-function arithmetic with ints and variable names
+        integer = pyparsing_common.signed_integer
+        varname = pyparsing_common.identifier 
+        
+        arith_expr = infixNotation(integer | varname,
+            [
+            ('-', 1, opAssoc.RIGHT),
+            (oneOf('* /'), 2, opAssoc.LEFT),
+            (oneOf('+ -'), 2, opAssoc.LEFT),
+            ])
+        
+        arith_expr.runTests('''
+            5+3*6
+            (5+3)*6
+            -2--11
+            ''', fullDump=False)
+    prints::
+        5+3*6
+        [[5, '+', [3, '*', 6]]]
+
+        (5+3)*6
+        [[[5, '+', 3], '*', 6]]
+
+        -2--11
+        [[['-', 2], '-', ['-', 11]]]
+    """
+    ret = Forward()
+    lastExpr = baseExpr | ( lpar + ret + rpar )
+    for i,operDef in enumerate(opList):
+        opExpr,arity,rightLeftAssoc,pa = (operDef + (None,))[:4]
+        termName = "%s term" % opExpr if arity < 3 else "%s%s term" % opExpr
+        if arity == 3:
+            if opExpr is None or len(opExpr) != 2:
+                raise ValueError("if numterms=3, opExpr must be a tuple or list of two expressions")
+            opExpr1, opExpr2 = opExpr
+        thisExpr = Forward().setName(termName)
+        if rightLeftAssoc == opAssoc.LEFT:
+            if arity == 1:
+                matchExpr = FollowedBy(lastExpr + opExpr) + Group( lastExpr + OneOrMore( opExpr ) )
+            elif arity == 2:
+                if opExpr is not None:
+                    matchExpr = FollowedBy(lastExpr + opExpr + lastExpr) + Group( lastExpr + OneOrMore( opExpr + lastExpr ) )
+                else:
+                    matchExpr = FollowedBy(lastExpr+lastExpr) + Group( lastExpr + OneOrMore(lastExpr) )
+            elif arity == 3:
+                matchExpr = FollowedBy(lastExpr + opExpr1 + lastExpr + opExpr2 + lastExpr) + \
+                            Group( lastExpr + opExpr1 + lastExpr + opExpr2 + lastExpr )
+            else:
+                raise ValueError("operator must be unary (1), binary (2), or ternary (3)")
+        elif rightLeftAssoc == opAssoc.RIGHT:
+            if arity == 1:
+                # try to avoid LR with this extra test
+                if not isinstance(opExpr, Optional):
+                    opExpr = Optional(opExpr)
+                matchExpr = FollowedBy(opExpr.expr + thisExpr) + Group( opExpr + thisExpr )
+            elif arity == 2:
+                if opExpr is not None:
+                    matchExpr = FollowedBy(lastExpr + opExpr + thisExpr) + Group( lastExpr + OneOrMore( opExpr + thisExpr ) )
+                else:
+                    matchExpr = FollowedBy(lastExpr + thisExpr) + Group( lastExpr + OneOrMore( thisExpr ) )
+            elif arity == 3:
+                matchExpr = FollowedBy(lastExpr + opExpr1 + thisExpr + opExpr2 + thisExpr) + \
+                            Group( lastExpr + opExpr1 + thisExpr + opExpr2 + thisExpr )
+            else:
+                raise ValueError("operator must be unary (1), binary (2), or ternary (3)")
+        else:
+            raise ValueError("operator must indicate right or left associativity")
+        if pa:
+            if isinstance(pa, (tuple, list)):
+                matchExpr.setParseAction(*pa)
+            else:
+                matchExpr.setParseAction(pa)
+        thisExpr <<= ( matchExpr.setName(termName) | lastExpr )
+        lastExpr = thisExpr
+    ret <<= lastExpr
+    return ret
+
+operatorPrecedence = infixNotation
+"""(Deprecated) Former name of C{L{infixNotation}}, will be dropped in a future release."""
+
+dblQuotedString = Combine(Regex(r'"(?:[^"\n\r\\]|(?:"")|(?:\\(?:[^x]|x[0-9a-fA-F]+)))*')+'"').setName("string enclosed in double quotes")
+sglQuotedString = Combine(Regex(r"'(?:[^'\n\r\\]|(?:'')|(?:\\(?:[^x]|x[0-9a-fA-F]+)))*")+"'").setName("string enclosed in single quotes")
+quotedString = Combine(Regex(r'"(?:[^"\n\r\\]|(?:"")|(?:\\(?:[^x]|x[0-9a-fA-F]+)))*')+'"'|
+                       Regex(r"'(?:[^'\n\r\\]|(?:'')|(?:\\(?:[^x]|x[0-9a-fA-F]+)))*")+"'").setName("quotedString using single or double quotes")
+unicodeString = Combine(_L('u') + quotedString.copy()).setName("unicode string literal")
+
+def nestedExpr(opener="(", closer=")", content=None, ignoreExpr=quotedString.copy()):
+    """
+    Helper method for defining nested lists enclosed in opening and closing
+    delimiters ("(" and ")" are the default).
+
+    Parameters:
+     - opener - opening character for a nested list (default=C{"("}); can also be a pyparsing expression
+     - closer - closing character for a nested list (default=C{")"}); can also be a pyparsing expression
+     - content - expression for items within the nested lists (default=C{None})
+     - ignoreExpr - expression for ignoring opening and closing delimiters (default=C{quotedString})
+
+    If an expression is not provided for the content argument, the nested
+    expression will capture all whitespace-delimited content between delimiters
+    as a list of separate values.
+
+    Use the C{ignoreExpr} argument to define expressions that may contain
+    opening or closing characters that should not be treated as opening
+    or closing characters for nesting, such as quotedString or a comment
+    expression.  Specify multiple expressions using an C{L{Or}} or C{L{MatchFirst}}.
+    The default is L{quotedString}, but if no expressions are to be ignored,
+    then pass C{None} for this argument.
+
+    Example::
+        data_type = oneOf("void int short long char float double")
+        decl_data_type = Combine(data_type + Optional(Word('*')))
+        ident = Word(alphas+'_', alphanums+'_')
+        number = pyparsing_common.number
+        arg = Group(decl_data_type + ident)
+        LPAR,RPAR = map(Suppress, "()")
+
+        code_body = nestedExpr('{', '}', ignoreExpr=(quotedString | cStyleComment))
+
+        c_function = (decl_data_type("type") 
+                      + ident("name")
+                      + LPAR + Optional(delimitedList(arg), [])("args") + RPAR 
+                      + code_body("body"))
+        c_function.ignore(cStyleComment)
+        
+        source_code = '''
+            int is_odd(int x) { 
+                return (x%2); 
+            }
+                
+            int dec_to_hex(char hchar) { 
+                if (hchar >= '0' && hchar <= '9') { 
+                    return (ord(hchar)-ord('0')); 
+                } else { 
+                    return (10+ord(hchar)-ord('A'));
+                } 
+            }
+        '''
+        for func in c_function.searchString(source_code):
+            print("%(name)s (%(type)s) args: %(args)s" % func)
+
+    prints::
+        is_odd (int) args: [['int', 'x']]
+        dec_to_hex (int) args: [['char', 'hchar']]
+    """
+    if opener == closer:
+        raise ValueError("opening and closing strings cannot be the same")
+    if content is None:
+        if isinstance(opener,basestring) and isinstance(closer,basestring):
+            if len(opener) == 1 and len(closer)==1:
+                if ignoreExpr is not None:
+                    content = (Combine(OneOrMore(~ignoreExpr +
+                                    CharsNotIn(opener+closer+ParserElement.DEFAULT_WHITE_CHARS,exact=1))
+                                ).setParseAction(lambda t:t[0].strip()))
+                else:
+                    content = (empty.copy()+CharsNotIn(opener+closer+ParserElement.DEFAULT_WHITE_CHARS
+                                ).setParseAction(lambda t:t[0].strip()))
+            else:
+                if ignoreExpr is not None:
+                    content = (Combine(OneOrMore(~ignoreExpr + 
+                                    ~Literal(opener) + ~Literal(closer) +
+                                    CharsNotIn(ParserElement.DEFAULT_WHITE_CHARS,exact=1))
+                                ).setParseAction(lambda t:t[0].strip()))
+                else:
+                    content = (Combine(OneOrMore(~Literal(opener) + ~Literal(closer) +
+                                    CharsNotIn(ParserElement.DEFAULT_WHITE_CHARS,exact=1))
+                                ).setParseAction(lambda t:t[0].strip()))
+        else:
+            raise ValueError("opening and closing arguments must be strings if no content expression is given")
+    ret = Forward()
+    if ignoreExpr is not None:
+        ret <<= Group( Suppress(opener) + ZeroOrMore( ignoreExpr | ret | content ) + Suppress(closer) )
+    else:
+        ret <<= Group( Suppress(opener) + ZeroOrMore( ret | content )  + Suppress(closer) )
+    ret.setName('nested %s%s expression' % (opener,closer))
+    return ret
+
+def indentedBlock(blockStatementExpr, indentStack, indent=True):
+    """
+    Helper method for defining space-delimited indentation blocks, such as
+    those used to define block statements in Python source code.
+
+    Parameters:
+     - blockStatementExpr - expression defining syntax of statement that
+            is repeated within the indented block
+     - indentStack - list created by caller to manage indentation stack
+            (multiple statementWithIndentedBlock expressions within a single grammar
+            should share a common indentStack)
+     - indent - boolean indicating whether block must be indented beyond the
+            the current level; set to False for block of left-most statements
+            (default=C{True})
+
+    A valid block must contain at least one C{blockStatement}.
+
+    Example::
+        data = '''
+        def A(z):
+          A1
+          B = 100
+          G = A2
+          A2
+          A3
+        B
+        def BB(a,b,c):
+          BB1
+          def BBA():
+            bba1
+            bba2
+            bba3
+        C
+        D
+        def spam(x,y):
+             def eggs(z):
+                 pass
+        '''
+
+
+        indentStack = [1]
+        stmt = Forward()
+
+        identifier = Word(alphas, alphanums)
+        funcDecl = ("def" + identifier + Group( "(" + Optional( delimitedList(identifier) ) + ")" ) + ":")
+        func_body = indentedBlock(stmt, indentStack)
+        funcDef = Group( funcDecl + func_body )
+
+        rvalue = Forward()
+        funcCall = Group(identifier + "(" + Optional(delimitedList(rvalue)) + ")")
+        rvalue << (funcCall | identifier | Word(nums))
+        assignment = Group(identifier + "=" + rvalue)
+        stmt << ( funcDef | assignment | identifier )
+
+        module_body = OneOrMore(stmt)
+
+        parseTree = module_body.parseString(data)
+        parseTree.pprint()
+    prints::
+        [['def',
+          'A',
+          ['(', 'z', ')'],
+          ':',
+          [['A1'], [['B', '=', '100']], [['G', '=', 'A2']], ['A2'], ['A3']]],
+         'B',
+         ['def',
+          'BB',
+          ['(', 'a', 'b', 'c', ')'],
+          ':',
+          [['BB1'], [['def', 'BBA', ['(', ')'], ':', [['bba1'], ['bba2'], ['bba3']]]]]],
+         'C',
+         'D',
+         ['def',
+          'spam',
+          ['(', 'x', 'y', ')'],
+          ':',
+          [[['def', 'eggs', ['(', 'z', ')'], ':', [['pass']]]]]]] 
+    """
+    def checkPeerIndent(s,l,t):
+        if l >= len(s): return
+        curCol = col(l,s)
+        if curCol != indentStack[-1]:
+            if curCol > indentStack[-1]:
+                raise ParseFatalException(s,l,"illegal nesting")
+            raise ParseException(s,l,"not a peer entry")
+
+    def checkSubIndent(s,l,t):
+        curCol = col(l,s)
+        if curCol > indentStack[-1]:
+            indentStack.append( curCol )
+        else:
+            raise ParseException(s,l,"not a subentry")
+
+    def checkUnindent(s,l,t):
+        if l >= len(s): return
+        curCol = col(l,s)
+        if not(indentStack and curCol < indentStack[-1] and curCol <= indentStack[-2]):
+            raise ParseException(s,l,"not an unindent")
+        indentStack.pop()
+
+    NL = OneOrMore(LineEnd().setWhitespaceChars("\t ").suppress())
+    INDENT = (Empty() + Empty().setParseAction(checkSubIndent)).setName('INDENT')
+    PEER   = Empty().setParseAction(checkPeerIndent).setName('')
+    UNDENT = Empty().setParseAction(checkUnindent).setName('UNINDENT')
+    if indent:
+        smExpr = Group( Optional(NL) +
+            #~ FollowedBy(blockStatementExpr) +
+            INDENT + (OneOrMore( PEER + Group(blockStatementExpr) + Optional(NL) )) + UNDENT)
+    else:
+        smExpr = Group( Optional(NL) +
+            (OneOrMore( PEER + Group(blockStatementExpr) + Optional(NL) )) )
+    blockStatementExpr.ignore(_bslash + LineEnd())
+    return smExpr.setName('indented block')
+
+alphas8bit = srange(r"[\0xc0-\0xd6\0xd8-\0xf6\0xf8-\0xff]")
+punc8bit = srange(r"[\0xa1-\0xbf\0xd7\0xf7]")
+
+anyOpenTag,anyCloseTag = makeHTMLTags(Word(alphas,alphanums+"_:").setName('any tag'))
+_htmlEntityMap = dict(zip("gt lt amp nbsp quot apos".split(),'><& "\''))
+commonHTMLEntity = Regex('&(?P<entity>' + '|'.join(_htmlEntityMap.keys()) +");").setName("common HTML entity")
+def replaceHTMLEntity(t):
+    """Helper parser action to replace common HTML entities with their special characters"""
+    return _htmlEntityMap.get(t.entity)
+
+# it's easy to get these comment structures wrong - they're very common, so may as well make them available
+cStyleComment = Combine(Regex(r"/\*(?:[^*]|\*(?!/))*") + '*/').setName("C style comment")
+"Comment of the form C{/* ... */}"
+
+htmlComment = Regex(r"<!--[\s\S]*?-->").setName("HTML comment")
+"Comment of the form C{<!-- ... -->}"
+
+restOfLine = Regex(r".*").leaveWhitespace().setName("rest of line")
+dblSlashComment = Regex(r"//(?:\\\n|[^\n])*").setName("// comment")
+"Comment of the form C{// ... (to end of line)}"
+
+cppStyleComment = Combine(Regex(r"/\*(?:[^*]|\*(?!/))*") + '*/'| dblSlashComment).setName("C++ style comment")
+"Comment of either form C{L{cStyleComment}} or C{L{dblSlashComment}}"
+
+javaStyleComment = cppStyleComment
+"Same as C{L{cppStyleComment}}"
+
+pythonStyleComment = Regex(r"#.*").setName("Python style comment")
+"Comment of the form C{# ... (to end of line)}"
+
+_commasepitem = Combine(OneOrMore(Word(printables, excludeChars=',') +
+                                  Optional( Word(" \t") +
+                                            ~Literal(",") + ~LineEnd() ) ) ).streamline().setName("commaItem")
+commaSeparatedList = delimitedList( Optional( quotedString.copy() | _commasepitem, default="") ).setName("commaSeparatedList")
+"""(Deprecated) Predefined expression of 1 or more printable words or quoted strings, separated by commas.
+   This expression is deprecated in favor of L{pyparsing_common.comma_separated_list}."""
+
+# some other useful expressions - using lower-case class name since we are really using this as a namespace
+class pyparsing_common:
+    """
+    Here are some common low-level expressions that may be useful in jump-starting parser development:
+     - numeric forms (L{integers<integer>}, L{reals<real>}, L{scientific notation<sci_real>})
+     - common L{programming identifiers<identifier>}
+     - network addresses (L{MAC<mac_address>}, L{IPv4<ipv4_address>}, L{IPv6<ipv6_address>})
+     - ISO8601 L{dates<iso8601_date>} and L{datetime<iso8601_datetime>}
+     - L{UUID<uuid>}
+     - L{comma-separated list<comma_separated_list>}
+    Parse actions:
+     - C{L{convertToInteger}}
+     - C{L{convertToFloat}}
+     - C{L{convertToDate}}
+     - C{L{convertToDatetime}}
+     - C{L{stripHTMLTags}}
+     - C{L{upcaseTokens}}
+     - C{L{downcaseTokens}}
+
+    Example::
+        pyparsing_common.number.runTests('''
+            # any int or real number, returned as the appropriate type
+            100
+            -100
+            +100
+            3.14159
+            6.02e23
+            1e-12
+            ''')
+
+        pyparsing_common.fnumber.runTests('''
+            # any int or real number, returned as float
+            100
+            -100
+            +100
+            3.14159
+            6.02e23
+            1e-12
+            ''')
+
+        pyparsing_common.hex_integer.runTests('''
+            # hex numbers
+            100
+            FF
+            ''')
+
+        pyparsing_common.fraction.runTests('''
+            # fractions
+            1/2
+            -3/4
+            ''')
+
+        pyparsing_common.mixed_integer.runTests('''
+            # mixed fractions
+            1
+            1/2
+            -3/4
+            1-3/4
+            ''')
+
+        import uuid
+        pyparsing_common.uuid.setParseAction(tokenMap(uuid.UUID))
+        pyparsing_common.uuid.runTests('''
+            # uuid
+            12345678-1234-5678-1234-567812345678
+            ''')
+    prints::
+        # any int or real number, returned as the appropriate type
+        100
+        [100]
+
+        -100
+        [-100]
+
+        +100
+        [100]
+
+        3.14159
+        [3.14159]
+
+        6.02e23
+        [6.02e+23]
+
+        1e-12
+        [1e-12]
+
+        # any int or real number, returned as float
+        100
+        [100.0]
+
+        -100
+        [-100.0]
+
+        +100
+        [100.0]
+
+        3.14159
+        [3.14159]
+
+        6.02e23
+        [6.02e+23]
+
+        1e-12
+        [1e-12]
+
+        # hex numbers
+        100
+        [256]
+
+        FF
+        [255]
+
+        # fractions
+        1/2
+        [0.5]
+
+        -3/4
+        [-0.75]
+
+        # mixed fractions
+        1
+        [1]
+
+        1/2
+        [0.5]
+
+        -3/4
+        [-0.75]
+
+        1-3/4
+        [1.75]
+
+        # uuid
+        12345678-1234-5678-1234-567812345678
+        [UUID('12345678-1234-5678-1234-567812345678')]
+    """
+
+    convertToInteger = tokenMap(int)
+    """
+    Parse action for converting parsed integers to Python int
+    """
+
+    convertToFloat = tokenMap(float)
+    """
+    Parse action for converting parsed numbers to Python float
+    """
+
+    integer = Word(nums).setName("integer").setParseAction(convertToInteger)
+    """expression that parses an unsigned integer, returns an int"""
+
+    hex_integer = Word(hexnums).setName("hex integer").setParseAction(tokenMap(int,16))
+    """expression that parses a hexadecimal integer, returns an int"""
+
+    signed_integer = Regex(r'[+-]?\d+').setName("signed integer").setParseAction(convertToInteger)
+    """expression that parses an integer with optional leading sign, returns an int"""
+
+    fraction = (signed_integer().setParseAction(convertToFloat) + '/' + signed_integer().setParseAction(convertToFloat)).setName("fraction")
+    """fractional expression of an integer divided by an integer, returns a float"""
+    fraction.addParseAction(lambda t: t[0]/t[-1])
+
+    mixed_integer = (fraction | signed_integer + Optional(Optional('-').suppress() + fraction)).setName("fraction or mixed integer-fraction")
+    """mixed integer of the form 'integer - fraction', with optional leading integer, returns float"""
+    mixed_integer.addParseAction(sum)
+
+    real = Regex(r'[+-]?\d+\.\d*').setName("real number").setParseAction(convertToFloat)
+    """expression that parses a floating point number and returns a float"""
+
+    sci_real = Regex(r'[+-]?\d+([eE][+-]?\d+|\.\d*([eE][+-]?\d+)?)').setName("real number with scientific notation").setParseAction(convertToFloat)
+    """expression that parses a floating point number with optional scientific notation and returns a float"""
+
+    # streamlining this expression makes the docs nicer-looking
+    number = (sci_real | real | signed_integer).streamline()
+    """any numeric expression, returns the corresponding Python type"""
+
+    fnumber = Regex(r'[+-]?\d+\.?\d*([eE][+-]?\d+)?').setName("fnumber").setParseAction(convertToFloat)
+    """any int or real number, returned as float"""
+    
+    identifier = Word(alphas+'_', alphanums+'_').setName("identifier")
+    """typical code identifier (leading alpha or '_', followed by 0 or more alphas, nums, or '_')"""
+    
+    ipv4_address = Regex(r'(25[0-5]|2[0-4][0-9]|1?[0-9]{1,2})(\.(25[0-5]|2[0-4][0-9]|1?[0-9]{1,2})){3}').setName("IPv4 address")
+    "IPv4 address (C{0.0.0.0 - 255.255.255.255})"
+
+    _ipv6_part = Regex(r'[0-9a-fA-F]{1,4}').setName("hex_integer")
+    _full_ipv6_address = (_ipv6_part + (':' + _ipv6_part)*7).setName("full IPv6 address")
+    _short_ipv6_address = (Optional(_ipv6_part + (':' + _ipv6_part)*(0,6)) + "::" + Optional(_ipv6_part + (':' + _ipv6_part)*(0,6))).setName("short IPv6 address")
+    _short_ipv6_address.addCondition(lambda t: sum(1 for tt in t if pyparsing_common._ipv6_part.matches(tt)) < 8)
+    _mixed_ipv6_address = ("::ffff:" + ipv4_address).setName("mixed IPv6 address")
+    ipv6_address = Combine((_full_ipv6_address | _mixed_ipv6_address | _short_ipv6_address).setName("IPv6 address")).setName("IPv6 address")
+    "IPv6 address (long, short, or mixed form)"
+    
+    mac_address = Regex(r'[0-9a-fA-F]{2}([:.-])[0-9a-fA-F]{2}(?:\1[0-9a-fA-F]{2}){4}').setName("MAC address")
+    "MAC address xx:xx:xx:xx:xx (may also have '-' or '.' delimiters)"
+
+    @staticmethod
+    def convertToDate(fmt="%Y-%m-%d"):
+        """
+        Helper to create a parse action for converting parsed date string to Python datetime.date
+
+        Params -
+         - fmt - format to be passed to datetime.strptime (default=C{"%Y-%m-%d"})
+
+        Example::
+            date_expr = pyparsing_common.iso8601_date.copy()
+            date_expr.setParseAction(pyparsing_common.convertToDate())
+            print(date_expr.parseString("1999-12-31"))
+        prints::
+            [datetime.date(1999, 12, 31)]
+        """
+        def cvt_fn(s,l,t):
+            try:
+                return datetime.strptime(t[0], fmt).date()
+            except ValueError as ve:
+                raise ParseException(s, l, str(ve))
+        return cvt_fn
+
+    @staticmethod
+    def convertToDatetime(fmt="%Y-%m-%dT%H:%M:%S.%f"):
+        """
+        Helper to create a parse action for converting parsed datetime string to Python datetime.datetime
+
+        Params -
+         - fmt - format to be passed to datetime.strptime (default=C{"%Y-%m-%dT%H:%M:%S.%f"})
+
+        Example::
+            dt_expr = pyparsing_common.iso8601_datetime.copy()
+            dt_expr.setParseAction(pyparsing_common.convertToDatetime())
+            print(dt_expr.parseString("1999-12-31T23:59:59.999"))
+        prints::
+            [datetime.datetime(1999, 12, 31, 23, 59, 59, 999000)]
+        """
+        def cvt_fn(s,l,t):
+            try:
+                return datetime.strptime(t[0], fmt)
+            except ValueError as ve:
+                raise ParseException(s, l, str(ve))
+        return cvt_fn
+
+    iso8601_date = Regex(r'(?P<year>\d{4})(?:-(?P<month>\d\d)(?:-(?P<day>\d\d))?)?').setName("ISO8601 date")
+    "ISO8601 date (C{yyyy-mm-dd})"
+
+    iso8601_datetime = Regex(r'(?P<year>\d{4})-(?P<month>\d\d)-(?P<day>\d\d)[T ](?P<hour>\d\d):(?P<minute>\d\d)(:(?P<second>\d\d(\.\d*)?)?)?(?P<tz>Z|[+-]\d\d:?\d\d)?').setName("ISO8601 datetime")
+    "ISO8601 datetime (C{yyyy-mm-ddThh:mm:ss.s(Z|+-00:00)}) - trailing seconds, milliseconds, and timezone optional; accepts separating C{'T'} or C{' '}"
+
+    uuid = Regex(r'[0-9a-fA-F]{8}(-[0-9a-fA-F]{4}){3}-[0-9a-fA-F]{12}').setName("UUID")
+    "UUID (C{xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx})"
+
+    _html_stripper = anyOpenTag.suppress() | anyCloseTag.suppress()
+    @staticmethod
+    def stripHTMLTags(s, l, tokens):
+        """
+        Parse action to remove HTML tags from web page HTML source
+
+        Example::
+            # strip HTML links from normal text 
+            text = '<td>More info at the <a href="http://pyparsing.wikispaces.com">pyparsing</a> wiki page</td>'
+            td,td_end = makeHTMLTags("TD")
+            table_text = td + SkipTo(td_end).setParseAction(pyparsing_common.stripHTMLTags)("body") + td_end
+            
+            print(table_text.parseString(text).body) # -> 'More info at the pyparsing wiki page'
+        """
+        return pyparsing_common._html_stripper.transformString(tokens[0])
+
+    _commasepitem = Combine(OneOrMore(~Literal(",") + ~LineEnd() + Word(printables, excludeChars=',') 
+                                        + Optional( White(" \t") ) ) ).streamline().setName("commaItem")
+    comma_separated_list = delimitedList( Optional( quotedString.copy() | _commasepitem, default="") ).setName("comma separated list")
+    """Predefined expression of 1 or more printable words or quoted strings, separated by commas."""
+
+    upcaseTokens = staticmethod(tokenMap(lambda t: _ustr(t).upper()))
+    """Parse action to convert tokens to upper case."""
+
+    downcaseTokens = staticmethod(tokenMap(lambda t: _ustr(t).lower()))
+    """Parse action to convert tokens to lower case."""
+
+
+if __name__ == "__main__":
+
+    selectToken    = CaselessLiteral("select")
+    fromToken      = CaselessLiteral("from")
+
+    ident          = Word(alphas, alphanums + "_$")
+
+    columnName     = delimitedList(ident, ".", combine=True).setParseAction(upcaseTokens)
+    columnNameList = Group(delimitedList(columnName)).setName("columns")
+    columnSpec     = ('*' | columnNameList)
+
+    tableName      = delimitedList(ident, ".", combine=True).setParseAction(upcaseTokens)
+    tableNameList  = Group(delimitedList(tableName)).setName("tables")
+    
+    simpleSQL      = selectToken("command") + columnSpec("columns") + fromToken + tableNameList("tables")
+
+    # demo runTests method, including embedded comments in test string
+    simpleSQL.runTests("""
+        # '*' as column list and dotted table name
+        select * from SYS.XYZZY
+
+        # caseless match on "SELECT", and casts back to "select"
+        SELECT * from XYZZY, ABC
+
+        # list of column names, and mixed case SELECT keyword
+        Select AA,BB,CC from Sys.dual
+
+        # multiple tables
+        Select A, B, C from Sys.dual, Table2
+
+        # invalid SELECT keyword - should fail
+        Xelect A, B, C from Sys.dual
+
+        # incomplete command - should fail
+        Select
+
+        # invalid column name - should fail
+        Select ^^^ frox Sys.dual
+
+        """)
+
+    pyparsing_common.number.runTests("""
+        100
+        -100
+        +100
+        3.14159
+        6.02e23
+        1e-12
+        """)
+
+    # any int or real number, returned as float
+    pyparsing_common.fnumber.runTests("""
+        100
+        -100
+        +100
+        3.14159
+        6.02e23
+        1e-12
+        """)
+
+    pyparsing_common.hex_integer.runTests("""
+        100
+        FF
+        """)
+
+    import uuid
+    pyparsing_common.uuid.setParseAction(tokenMap(uuid.UUID))
+    pyparsing_common.uuid.runTests("""
+        12345678-1234-5678-1234-567812345678
+        """)
diff --git a/venv/Scripts/Activate.ps1 b/venv/Scripts/Activate.ps1
index 953fd89277a4d8d0e46ccffeacfa44415233eb2f..2eafbf0803db70ae61663e134c2f96ba05b93d61 100644
--- a/venv/Scripts/Activate.ps1
+++ b/venv/Scripts/Activate.ps1
@@ -1,384 +1,384 @@
-<#
-.Synopsis
-Activate a Python virtual environment for the current PowerShell session.
-
-.Description
-Pushes the python executable for a virtual environment to the front of the
-$Env:PATH environment variable and sets the prompt to signify that you are
-in a Python virtual environment. Makes use of the command line switches as
-well as the `pyvenv.cfg` file values present in the virtual environment.
-
-.Parameter VenvDir
-Path to the directory that contains the virtual environment to activate. The
-default value for this is the parent of the directory that the Activate.ps1
-script is located within.
-
-.Parameter Prompt
-The prompt prefix to display when this virtual environment is activated. By
-default, this prompt is the name of the virtual environment folder (VenvDir)
-surrounded by parentheses and followed by a single space (ie. '(.venv) ').
-
-.Example
-Activate.ps1
-Activates the Python virtual environment that contains the Activate.ps1 script.
-
-.Example
-Activate.ps1 -Verbose
-Activates the Python virtual environment that contains the Activate.ps1 script,
-and shows extra information about the activation as it executes.
-
-.Example
-Activate.ps1 -VenvDir C:\Users\MyUser\Common\.venv
-Activates the Python virtual environment located in the specified location.
-
-.Example
-Activate.ps1 -Prompt "MyPython"
-Activates the Python virtual environment that contains the Activate.ps1 script,
-and prefixes the current prompt with the specified string (surrounded in
-parentheses) while the virtual environment is active.
-
-.Notes
-On Windows, it may be required to enable this Activate.ps1 script by setting the
-execution policy for the user. You can do this by issuing the following PowerShell
-command:
-
-PS C:\> Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser
-
-For more information on Execution Policies: 
-https://go.microsoft.com/fwlink/?LinkID=135170
-
-#>
-Param(
-    [Parameter(Mandatory = $false)]
-    [String]
-    $VenvDir,
-    [Parameter(Mandatory = $false)]
-    [String]
-    $Prompt
-)
-
-<# Function declarations --------------------------------------------------- #>
-
-<#
-.Synopsis
-Remove all shell session elements added by the Activate script, including the
-addition of the virtual environment's Python executable from the beginning of
-the PATH variable.
-
-.Parameter NonDestructive
-If present, do not remove this function from the global namespace for the
-session.
-
-#>
-function global:deactivate ([switch]$NonDestructive) {
-    # Revert to original values
-
-    # The prior prompt:
-    if (Test-Path -Path Function:_OLD_VIRTUAL_PROMPT) {
-        Copy-Item -Path Function:_OLD_VIRTUAL_PROMPT -Destination Function:prompt
-        Remove-Item -Path Function:_OLD_VIRTUAL_PROMPT
-    }
-
-    # The prior PYTHONHOME:
-    if (Test-Path -Path Env:_OLD_VIRTUAL_PYTHONHOME) {
-        Copy-Item -Path Env:_OLD_VIRTUAL_PYTHONHOME -Destination Env:PYTHONHOME
-        Remove-Item -Path Env:_OLD_VIRTUAL_PYTHONHOME
-    }
-
-    # The prior PATH:
-    if (Test-Path -Path Env:_OLD_VIRTUAL_PATH) {
-        Copy-Item -Path Env:_OLD_VIRTUAL_PATH -Destination Env:PATH
-        Remove-Item -Path Env:_OLD_VIRTUAL_PATH
-    }
-
-    # Just remove the VIRTUAL_ENV altogether:
-    if (Test-Path -Path Env:VIRTUAL_ENV) {
-        Remove-Item -Path env:VIRTUAL_ENV
-    }
-
-    # Just remove the _PYTHON_VENV_PROMPT_PREFIX altogether:
-    if (Get-Variable -Name "_PYTHON_VENV_PROMPT_PREFIX" -ErrorAction SilentlyContinue) {
-        Remove-Variable -Name _PYTHON_VENV_PROMPT_PREFIX -Scope Global -Force
-    }
-
-    # Leave deactivate function in the global namespace if requested:
-    if (-not $NonDestructive) {
-        Remove-Item -Path function:deactivate
-    }
-}
-
-<#
-.Description
-Get-PyVenvConfig parses the values from the pyvenv.cfg file located in the
-given folder, and returns them in a map.
-
-For each line in the pyvenv.cfg file, if that line can be parsed into exactly
-two strings separated by `=` (with any amount of whitespace surrounding the =)
-then it is considered a `key = value` line. The left hand string is the key,
-the right hand is the value.
-
-If the value starts with a `'` or a `"` then the first and last character is
-stripped from the value before being captured.
-
-.Parameter ConfigDir
-Path to the directory that contains the `pyvenv.cfg` file.
-#>
-function Get-PyVenvConfig(
-    [String]
-    $ConfigDir
-) {
-    Write-Verbose "Given ConfigDir=$ConfigDir, obtain values in pyvenv.cfg"
-
-    # Ensure the file exists, and issue a warning if it doesn't (but still allow the function to continue).
-    $pyvenvConfigPath = Join-Path -Resolve -Path $ConfigDir -ChildPath 'pyvenv.cfg' -ErrorAction Continue
-
-    # An empty map will be returned if no config file is found.
-    $pyvenvConfig = @{ }
-
-    if ($pyvenvConfigPath) {
-
-        Write-Verbose "File exists, parse `key = value` lines"
-        $pyvenvConfigContent = Get-Content -Path $pyvenvConfigPath
-
-        $pyvenvConfigContent | ForEach-Object {
-            $keyval = $PSItem -split "\s*=\s*", 2
-            if ($keyval[0] -and $keyval[1]) {
-                $val = $keyval[1]
-
-                # Remove extraneous quotations around a string value.
-                if ("'""".Contains($val.Substring(0, 1))) {
-                    $val = $val.Substring(1, $val.Length - 2)
-                }
-
-                $pyvenvConfig[$keyval[0]] = $val
-                Write-Verbose "Adding Key: '$($keyval[0])'='$val'"
-            }
-        }
-    }
-    return $pyvenvConfig
-}
-
-
-<# Begin Activate script --------------------------------------------------- #>
-
-# Determine the containing directory of this script
-$VenvExecPath = Split-Path -Parent $MyInvocation.MyCommand.Definition
-$VenvExecDir = Get-Item -Path $VenvExecPath
-
-Write-Verbose "Activation script is located in path: '$VenvExecPath'"
-Write-Verbose "VenvExecDir Fullname: '$($VenvExecDir.FullName)"
-Write-Verbose "VenvExecDir Name: '$($VenvExecDir.Name)"
-
-# Set values required in priority: CmdLine, ConfigFile, Default
-# First, get the location of the virtual environment, it might not be
-# VenvExecDir if specified on the command line.
-if ($VenvDir) {
-    Write-Verbose "VenvDir given as parameter, using '$VenvDir' to determine values"
-}
-else {
-    Write-Verbose "VenvDir not given as a parameter, using parent directory name as VenvDir."
-    $VenvDir = $VenvExecDir.Parent.FullName.TrimEnd("\\/")
-    Write-Verbose "VenvDir=$VenvDir"
-}
-
-# Next, read the `pyvenv.cfg` file to determine any required value such
-# as `prompt`.
-$pyvenvCfg = Get-PyVenvConfig -ConfigDir $VenvDir
-
-# Next, set the prompt from the command line, or the config file, or
-# just use the name of the virtual environment folder.
-if ($Prompt) {
-    Write-Verbose "Prompt specified as argument, using '$Prompt'"
-}
-else {
-    Write-Verbose "Prompt not specified as argument to script, checking pyvenv.cfg value"
-    if ($pyvenvCfg -and $pyvenvCfg['prompt']) {
-        Write-Verbose "  Setting based on value in pyvenv.cfg='$($pyvenvCfg['prompt'])'"
-        $Prompt = $pyvenvCfg['prompt'];
-    }
-    else {
-        Write-Verbose "  Setting prompt based on parent's directory's name. (Is the directory name passed to venv module when creating the virutal environment)"
-        Write-Verbose "  Got leaf-name of $VenvDir='$(Split-Path -Path $venvDir -Leaf)'"
-        $Prompt = Split-Path -Path $venvDir -Leaf
-    }
-}
-
-Write-Verbose "Prompt = '$Prompt'"
-Write-Verbose "VenvDir='$VenvDir'"
-
-# Deactivate any currently active virtual environment, but leave the
-# deactivate function in place.
-deactivate -nondestructive
-
-# Now set the environment variable VIRTUAL_ENV, used by many tools to determine
-# that there is an activated venv.
-$env:VIRTUAL_ENV = $VenvDir
-
-if (-not $Env:VIRTUAL_ENV_DISABLE_PROMPT) {
-
-    Write-Verbose "Setting prompt to '$Prompt'"
-
-    # Set the prompt to include the env name
-    # Make sure _OLD_VIRTUAL_PROMPT is global
-    function global:_OLD_VIRTUAL_PROMPT { "" }
-    Copy-Item -Path function:prompt -Destination function:_OLD_VIRTUAL_PROMPT
-    New-Variable -Name _PYTHON_VENV_PROMPT_PREFIX -Description "Python virtual environment prompt prefix" -Scope Global -Option ReadOnly -Visibility Public -Value $Prompt
-
-    function global:prompt {
-        Write-Host -NoNewline -ForegroundColor Green "($_PYTHON_VENV_PROMPT_PREFIX) "
-        _OLD_VIRTUAL_PROMPT
-    }
-}
-
-# Clear PYTHONHOME
-if (Test-Path -Path Env:PYTHONHOME) {
-    Copy-Item -Path Env:PYTHONHOME -Destination Env:_OLD_VIRTUAL_PYTHONHOME
-    Remove-Item -Path Env:PYTHONHOME
-}
-
-# Add the venv to the PATH
-Copy-Item -Path Env:PATH -Destination Env:_OLD_VIRTUAL_PATH
-$Env:PATH = "$VenvExecDir$([System.IO.Path]::PathSeparator)$Env:PATH"
-
-# SIG # Begin signature block
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-# SIG # End signature block
+<#
+.Synopsis
+Activate a Python virtual environment for the current PowerShell session.
+
+.Description
+Pushes the python executable for a virtual environment to the front of the
+$Env:PATH environment variable and sets the prompt to signify that you are
+in a Python virtual environment. Makes use of the command line switches as
+well as the `pyvenv.cfg` file values present in the virtual environment.
+
+.Parameter VenvDir
+Path to the directory that contains the virtual environment to activate. The
+default value for this is the parent of the directory that the Activate.ps1
+script is located within.
+
+.Parameter Prompt
+The prompt prefix to display when this virtual environment is activated. By
+default, this prompt is the name of the virtual environment folder (VenvDir)
+surrounded by parentheses and followed by a single space (ie. '(.venv) ').
+
+.Example
+Activate.ps1
+Activates the Python virtual environment that contains the Activate.ps1 script.
+
+.Example
+Activate.ps1 -Verbose
+Activates the Python virtual environment that contains the Activate.ps1 script,
+and shows extra information about the activation as it executes.
+
+.Example
+Activate.ps1 -VenvDir C:\Users\MyUser\Common\.venv
+Activates the Python virtual environment located in the specified location.
+
+.Example
+Activate.ps1 -Prompt "MyPython"
+Activates the Python virtual environment that contains the Activate.ps1 script,
+and prefixes the current prompt with the specified string (surrounded in
+parentheses) while the virtual environment is active.
+
+.Notes
+On Windows, it may be required to enable this Activate.ps1 script by setting the
+execution policy for the user. You can do this by issuing the following PowerShell
+command:
+
+PS C:\> Set-ExecutionPolicy -ExecutionPolicy RemoteSigned -Scope CurrentUser
+
+For more information on Execution Policies: 
+https://go.microsoft.com/fwlink/?LinkID=135170
+
+#>
+Param(
+    [Parameter(Mandatory = $false)]
+    [String]
+    $VenvDir,
+    [Parameter(Mandatory = $false)]
+    [String]
+    $Prompt
+)
+
+<# Function declarations --------------------------------------------------- #>
+
+<#
+.Synopsis
+Remove all shell session elements added by the Activate script, including the
+addition of the virtual environment's Python executable from the beginning of
+the PATH variable.
+
+.Parameter NonDestructive
+If present, do not remove this function from the global namespace for the
+session.
+
+#>
+function global:deactivate ([switch]$NonDestructive) {
+    # Revert to original values
+
+    # The prior prompt:
+    if (Test-Path -Path Function:_OLD_VIRTUAL_PROMPT) {
+        Copy-Item -Path Function:_OLD_VIRTUAL_PROMPT -Destination Function:prompt
+        Remove-Item -Path Function:_OLD_VIRTUAL_PROMPT
+    }
+
+    # The prior PYTHONHOME:
+    if (Test-Path -Path Env:_OLD_VIRTUAL_PYTHONHOME) {
+        Copy-Item -Path Env:_OLD_VIRTUAL_PYTHONHOME -Destination Env:PYTHONHOME
+        Remove-Item -Path Env:_OLD_VIRTUAL_PYTHONHOME
+    }
+
+    # The prior PATH:
+    if (Test-Path -Path Env:_OLD_VIRTUAL_PATH) {
+        Copy-Item -Path Env:_OLD_VIRTUAL_PATH -Destination Env:PATH
+        Remove-Item -Path Env:_OLD_VIRTUAL_PATH
+    }
+
+    # Just remove the VIRTUAL_ENV altogether:
+    if (Test-Path -Path Env:VIRTUAL_ENV) {
+        Remove-Item -Path env:VIRTUAL_ENV
+    }
+
+    # Just remove the _PYTHON_VENV_PROMPT_PREFIX altogether:
+    if (Get-Variable -Name "_PYTHON_VENV_PROMPT_PREFIX" -ErrorAction SilentlyContinue) {
+        Remove-Variable -Name _PYTHON_VENV_PROMPT_PREFIX -Scope Global -Force
+    }
+
+    # Leave deactivate function in the global namespace if requested:
+    if (-not $NonDestructive) {
+        Remove-Item -Path function:deactivate
+    }
+}
+
+<#
+.Description
+Get-PyVenvConfig parses the values from the pyvenv.cfg file located in the
+given folder, and returns them in a map.
+
+For each line in the pyvenv.cfg file, if that line can be parsed into exactly
+two strings separated by `=` (with any amount of whitespace surrounding the =)
+then it is considered a `key = value` line. The left hand string is the key,
+the right hand is the value.
+
+If the value starts with a `'` or a `"` then the first and last character is
+stripped from the value before being captured.
+
+.Parameter ConfigDir
+Path to the directory that contains the `pyvenv.cfg` file.
+#>
+function Get-PyVenvConfig(
+    [String]
+    $ConfigDir
+) {
+    Write-Verbose "Given ConfigDir=$ConfigDir, obtain values in pyvenv.cfg"
+
+    # Ensure the file exists, and issue a warning if it doesn't (but still allow the function to continue).
+    $pyvenvConfigPath = Join-Path -Resolve -Path $ConfigDir -ChildPath 'pyvenv.cfg' -ErrorAction Continue
+
+    # An empty map will be returned if no config file is found.
+    $pyvenvConfig = @{ }
+
+    if ($pyvenvConfigPath) {
+
+        Write-Verbose "File exists, parse `key = value` lines"
+        $pyvenvConfigContent = Get-Content -Path $pyvenvConfigPath
+
+        $pyvenvConfigContent | ForEach-Object {
+            $keyval = $PSItem -split "\s*=\s*", 2
+            if ($keyval[0] -and $keyval[1]) {
+                $val = $keyval[1]
+
+                # Remove extraneous quotations around a string value.
+                if ("'""".Contains($val.Substring(0, 1))) {
+                    $val = $val.Substring(1, $val.Length - 2)
+                }
+
+                $pyvenvConfig[$keyval[0]] = $val
+                Write-Verbose "Adding Key: '$($keyval[0])'='$val'"
+            }
+        }
+    }
+    return $pyvenvConfig
+}
+
+
+<# Begin Activate script --------------------------------------------------- #>
+
+# Determine the containing directory of this script
+$VenvExecPath = Split-Path -Parent $MyInvocation.MyCommand.Definition
+$VenvExecDir = Get-Item -Path $VenvExecPath
+
+Write-Verbose "Activation script is located in path: '$VenvExecPath'"
+Write-Verbose "VenvExecDir Fullname: '$($VenvExecDir.FullName)"
+Write-Verbose "VenvExecDir Name: '$($VenvExecDir.Name)"
+
+# Set values required in priority: CmdLine, ConfigFile, Default
+# First, get the location of the virtual environment, it might not be
+# VenvExecDir if specified on the command line.
+if ($VenvDir) {
+    Write-Verbose "VenvDir given as parameter, using '$VenvDir' to determine values"
+}
+else {
+    Write-Verbose "VenvDir not given as a parameter, using parent directory name as VenvDir."
+    $VenvDir = $VenvExecDir.Parent.FullName.TrimEnd("\\/")
+    Write-Verbose "VenvDir=$VenvDir"
+}
+
+# Next, read the `pyvenv.cfg` file to determine any required value such
+# as `prompt`.
+$pyvenvCfg = Get-PyVenvConfig -ConfigDir $VenvDir
+
+# Next, set the prompt from the command line, or the config file, or
+# just use the name of the virtual environment folder.
+if ($Prompt) {
+    Write-Verbose "Prompt specified as argument, using '$Prompt'"
+}
+else {
+    Write-Verbose "Prompt not specified as argument to script, checking pyvenv.cfg value"
+    if ($pyvenvCfg -and $pyvenvCfg['prompt']) {
+        Write-Verbose "  Setting based on value in pyvenv.cfg='$($pyvenvCfg['prompt'])'"
+        $Prompt = $pyvenvCfg['prompt'];
+    }
+    else {
+        Write-Verbose "  Setting prompt based on parent's directory's name. (Is the directory name passed to venv module when creating the virutal environment)"
+        Write-Verbose "  Got leaf-name of $VenvDir='$(Split-Path -Path $venvDir -Leaf)'"
+        $Prompt = Split-Path -Path $venvDir -Leaf
+    }
+}
+
+Write-Verbose "Prompt = '$Prompt'"
+Write-Verbose "VenvDir='$VenvDir'"
+
+# Deactivate any currently active virtual environment, but leave the
+# deactivate function in place.
+deactivate -nondestructive
+
+# Now set the environment variable VIRTUAL_ENV, used by many tools to determine
+# that there is an activated venv.
+$env:VIRTUAL_ENV = $VenvDir
+
+if (-not $Env:VIRTUAL_ENV_DISABLE_PROMPT) {
+
+    Write-Verbose "Setting prompt to '$Prompt'"
+
+    # Set the prompt to include the env name
+    # Make sure _OLD_VIRTUAL_PROMPT is global
+    function global:_OLD_VIRTUAL_PROMPT { "" }
+    Copy-Item -Path function:prompt -Destination function:_OLD_VIRTUAL_PROMPT
+    New-Variable -Name _PYTHON_VENV_PROMPT_PREFIX -Description "Python virtual environment prompt prefix" -Scope Global -Option ReadOnly -Visibility Public -Value $Prompt
+
+    function global:prompt {
+        Write-Host -NoNewline -ForegroundColor Green "($_PYTHON_VENV_PROMPT_PREFIX) "
+        _OLD_VIRTUAL_PROMPT
+    }
+}
+
+# Clear PYTHONHOME
+if (Test-Path -Path Env:PYTHONHOME) {
+    Copy-Item -Path Env:PYTHONHOME -Destination Env:_OLD_VIRTUAL_PYTHONHOME
+    Remove-Item -Path Env:PYTHONHOME
+}
+
+# Add the venv to the PATH
+Copy-Item -Path Env:PATH -Destination Env:_OLD_VIRTUAL_PATH
+$Env:PATH = "$VenvExecDir$([System.IO.Path]::PathSeparator)$Env:PATH"
+
+# SIG # Begin signature block
+# MIIaHgYJKoZIhvcNAQcCoIIaDzCCGgsCAQExDzANBglghkgBZQMEAgEFADB5Bgor
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+# VbwCut7qb3zyI8S5Sl4milVC
+# SIG # End signature block
diff --git a/venv/Scripts/activate b/venv/Scripts/activate
index 438cda8a6582b6aa4171240f0e9f8eaf3b9e3f20..02eff46b8bfff57a22700002523bca1a311bb006 100644
--- a/venv/Scripts/activate
+++ b/venv/Scripts/activate
@@ -1,66 +1,66 @@
-# This file must be used with "source bin/activate" *from bash*
-# you cannot run it directly
-
-deactivate () {
-    # reset old environment variables
-    if [ -n "${_OLD_VIRTUAL_PATH:-}" ] ; then
-        PATH="${_OLD_VIRTUAL_PATH:-}"
-        export PATH
-        unset _OLD_VIRTUAL_PATH
-    fi
-    if [ -n "${_OLD_VIRTUAL_PYTHONHOME:-}" ] ; then
-        PYTHONHOME="${_OLD_VIRTUAL_PYTHONHOME:-}"
-        export PYTHONHOME
-        unset _OLD_VIRTUAL_PYTHONHOME
-    fi
-
-    # This should detect bash and zsh, which have a hash command that must
-    # be called to get it to forget past commands.  Without forgetting
-    # past commands the $PATH changes we made may not be respected
-    if [ -n "${BASH:-}" -o -n "${ZSH_VERSION:-}" ] ; then
-        hash -r 2> /dev/null
-    fi
-
-    if [ -n "${_OLD_VIRTUAL_PS1:-}" ] ; then
-        PS1="${_OLD_VIRTUAL_PS1:-}"
-        export PS1
-        unset _OLD_VIRTUAL_PS1
-    fi
-
-    unset VIRTUAL_ENV
-    if [ ! "${1:-}" = "nondestructive" ] ; then
-    # Self destruct!
-        unset -f deactivate
-    fi
-}
-
-# unset irrelevant variables
-deactivate nondestructive
-
-VIRTUAL_ENV="C:\Users\김영우\PycharmProjects\Database\venv"
-export VIRTUAL_ENV
-
-_OLD_VIRTUAL_PATH="$PATH"
-PATH="$VIRTUAL_ENV/Scripts:$PATH"
-export PATH
-
-# unset PYTHONHOME if set
-# this will fail if PYTHONHOME is set to the empty string (which is bad anyway)
-# could use `if (set -u; : $PYTHONHOME) ;` in bash
-if [ -n "${PYTHONHOME:-}" ] ; then
-    _OLD_VIRTUAL_PYTHONHOME="${PYTHONHOME:-}"
-    unset PYTHONHOME
-fi
-
-if [ -z "${VIRTUAL_ENV_DISABLE_PROMPT:-}" ] ; then
-    _OLD_VIRTUAL_PS1="${PS1:-}"
-    PS1="(venv) ${PS1:-}"
-    export PS1
-fi
-
-# This should detect bash and zsh, which have a hash command that must
-# be called to get it to forget past commands.  Without forgetting
-# past commands the $PATH changes we made may not be respected
-if [ -n "${BASH:-}" -o -n "${ZSH_VERSION:-}" ] ; then
-    hash -r 2> /dev/null
-fi
+# This file must be used with "source bin/activate" *from bash*
+# you cannot run it directly
+
+deactivate () {
+    # reset old environment variables
+    if [ -n "${_OLD_VIRTUAL_PATH:-}" ] ; then
+        PATH="${_OLD_VIRTUAL_PATH:-}"
+        export PATH
+        unset _OLD_VIRTUAL_PATH
+    fi
+    if [ -n "${_OLD_VIRTUAL_PYTHONHOME:-}" ] ; then
+        PYTHONHOME="${_OLD_VIRTUAL_PYTHONHOME:-}"
+        export PYTHONHOME
+        unset _OLD_VIRTUAL_PYTHONHOME
+    fi
+
+    # This should detect bash and zsh, which have a hash command that must
+    # be called to get it to forget past commands.  Without forgetting
+    # past commands the $PATH changes we made may not be respected
+    if [ -n "${BASH:-}" -o -n "${ZSH_VERSION:-}" ] ; then
+        hash -r 2> /dev/null
+    fi
+
+    if [ -n "${_OLD_VIRTUAL_PS1:-}" ] ; then
+        PS1="${_OLD_VIRTUAL_PS1:-}"
+        export PS1
+        unset _OLD_VIRTUAL_PS1
+    fi
+
+    unset VIRTUAL_ENV
+    if [ ! "${1:-}" = "nondestructive" ] ; then
+    # Self destruct!
+        unset -f deactivate
+    fi
+}
+
+# unset irrelevant variables
+deactivate nondestructive
+
+VIRTUAL_ENV="C:\Users\김영우\PycharmProjects\Database\venv"
+export VIRTUAL_ENV
+
+_OLD_VIRTUAL_PATH="$PATH"
+PATH="$VIRTUAL_ENV/Scripts:$PATH"
+export PATH
+
+# unset PYTHONHOME if set
+# this will fail if PYTHONHOME is set to the empty string (which is bad anyway)
+# could use `if (set -u; : $PYTHONHOME) ;` in bash
+if [ -n "${PYTHONHOME:-}" ] ; then
+    _OLD_VIRTUAL_PYTHONHOME="${PYTHONHOME:-}"
+    unset PYTHONHOME
+fi
+
+if [ -z "${VIRTUAL_ENV_DISABLE_PROMPT:-}" ] ; then
+    _OLD_VIRTUAL_PS1="${PS1:-}"
+    PS1="(venv) ${PS1:-}"
+    export PS1
+fi
+
+# This should detect bash and zsh, which have a hash command that must
+# be called to get it to forget past commands.  Without forgetting
+# past commands the $PATH changes we made may not be respected
+if [ -n "${BASH:-}" -o -n "${ZSH_VERSION:-}" ] ; then
+    hash -r 2> /dev/null
+fi
diff --git a/venv/Scripts/activate.bat b/venv/Scripts/activate.bat
index 9a550f6b5eaf83b400e5522c28ca10ed374a2583..a018f92548a40fc37b5272e533ade4a836dea351 100644
--- a/venv/Scripts/activate.bat
+++ b/venv/Scripts/activate.bat
@@ -1,33 +1,33 @@
-@echo off
-
-rem This file is UTF-8 encoded, so we need to update the current code page while executing it
-for /f "tokens=2 delims=:." %%a in ('"%SystemRoot%\System32\chcp.com"') do (
-    set _OLD_CODEPAGE=%%a
-)
-if defined _OLD_CODEPAGE (
-    "%SystemRoot%\System32\chcp.com" 65001 > nul
-)
-
-set VIRTUAL_ENV=C:\Users\김영우\PycharmProjects\Database\venv
-
-if not defined PROMPT set PROMPT=$P$G
-
-if defined _OLD_VIRTUAL_PROMPT set PROMPT=%_OLD_VIRTUAL_PROMPT%
-if defined _OLD_VIRTUAL_PYTHONHOME set PYTHONHOME=%_OLD_VIRTUAL_PYTHONHOME%
-
-set _OLD_VIRTUAL_PROMPT=%PROMPT%
-set PROMPT=(venv) %PROMPT%
-
-if defined PYTHONHOME set _OLD_VIRTUAL_PYTHONHOME=%PYTHONHOME%
-set PYTHONHOME=
-
-if defined _OLD_VIRTUAL_PATH set PATH=%_OLD_VIRTUAL_PATH%
-if not defined _OLD_VIRTUAL_PATH set _OLD_VIRTUAL_PATH=%PATH%
-
-set PATH=%VIRTUAL_ENV%\Scripts;%PATH%
-
-:END
-if defined _OLD_CODEPAGE (
-    "%SystemRoot%\System32\chcp.com" %_OLD_CODEPAGE% > nul
-    set _OLD_CODEPAGE=
-)
+@echo off
+
+rem This file is UTF-8 encoded, so we need to update the current code page while executing it
+for /f "tokens=2 delims=:." %%a in ('"%SystemRoot%\System32\chcp.com"') do (
+    set _OLD_CODEPAGE=%%a
+)
+if defined _OLD_CODEPAGE (
+    "%SystemRoot%\System32\chcp.com" 65001 > nul
+)
+
+set VIRTUAL_ENV=C:\Users\김영우\PycharmProjects\Database\venv
+
+if not defined PROMPT set PROMPT=$P$G
+
+if defined _OLD_VIRTUAL_PROMPT set PROMPT=%_OLD_VIRTUAL_PROMPT%
+if defined _OLD_VIRTUAL_PYTHONHOME set PYTHONHOME=%_OLD_VIRTUAL_PYTHONHOME%
+
+set _OLD_VIRTUAL_PROMPT=%PROMPT%
+set PROMPT=(venv) %PROMPT%
+
+if defined PYTHONHOME set _OLD_VIRTUAL_PYTHONHOME=%PYTHONHOME%
+set PYTHONHOME=
+
+if defined _OLD_VIRTUAL_PATH set PATH=%_OLD_VIRTUAL_PATH%
+if not defined _OLD_VIRTUAL_PATH set _OLD_VIRTUAL_PATH=%PATH%
+
+set PATH=%VIRTUAL_ENV%\Scripts;%PATH%
+
+:END
+if defined _OLD_CODEPAGE (
+    "%SystemRoot%\System32\chcp.com" %_OLD_CODEPAGE% > nul
+    set _OLD_CODEPAGE=
+)
diff --git a/venv/Scripts/deactivate.bat b/venv/Scripts/deactivate.bat
index 1205c618686fbb0e28bb9f61a782d7be790d1163..313c0791173682d387fd0657ef4a4c1ff63e7d70 100644
--- a/venv/Scripts/deactivate.bat
+++ b/venv/Scripts/deactivate.bat
@@ -1,21 +1,21 @@
-@echo off
-
-if defined _OLD_VIRTUAL_PROMPT (
-    set "PROMPT=%_OLD_VIRTUAL_PROMPT%"
-)
-set _OLD_VIRTUAL_PROMPT=
-
-if defined _OLD_VIRTUAL_PYTHONHOME (
-    set "PYTHONHOME=%_OLD_VIRTUAL_PYTHONHOME%"
-    set _OLD_VIRTUAL_PYTHONHOME=
-)
-
-if defined _OLD_VIRTUAL_PATH (
-    set "PATH=%_OLD_VIRTUAL_PATH%"
-)
-
-set _OLD_VIRTUAL_PATH=
-
-set VIRTUAL_ENV=
-
-:END
+@echo off
+
+if defined _OLD_VIRTUAL_PROMPT (
+    set "PROMPT=%_OLD_VIRTUAL_PROMPT%"
+)
+set _OLD_VIRTUAL_PROMPT=
+
+if defined _OLD_VIRTUAL_PYTHONHOME (
+    set "PYTHONHOME=%_OLD_VIRTUAL_PYTHONHOME%"
+    set _OLD_VIRTUAL_PYTHONHOME=
+)
+
+if defined _OLD_VIRTUAL_PATH (
+    set "PATH=%_OLD_VIRTUAL_PATH%"
+)
+
+set _OLD_VIRTUAL_PATH=
+
+set VIRTUAL_ENV=
+
+:END
diff --git a/venv/pyvenv.cfg b/venv/pyvenv.cfg
index 92ba2583ac3b9c2db99267bbd3b55d2ebb48ca2a..2da024fc67c6005771be2be47d2bd35676df28f6 100644
--- a/venv/pyvenv.cfg
+++ b/venv/pyvenv.cfg
@@ -1,3 +1,3 @@
-home = C:\Python39
-include-system-site-packages = false
-version = 3.9.0
+home = C:\Python39
+include-system-site-packages = false
+version = 3.9.0