Upload New File 문자열 인덱싱과 슬라이싱

문자열 인덱싱과 슬라이싱.txt

+Python 3.7.1 (v3.7.1:260ec2c36a, Oct 20 2018, 14:05:16) [MSC v.1915 32 bit (Intel)] on win32
+Type "help", "copyright", "credits" or "license()" for more information.
+>>> #문자열 인덱싱과 슬라이싱
+>>> 
+>>> a="life is too short"
+>>> a[0]
+'l'
+>>> a[3]
+'e'
+>>> a[2]
+'f'
+>>> 
+>>> a[9]
+'o'
+>>> a[10]
+'o'
+>>> a[8]
+'t'
+>>> a[11]
+' '
+>>> a[12]
+'s'
+>>> a[13]
+'h'
+>>> a[15]
+'r'
+>>> a[16]
+'t'
+>>> a[17]
+Traceback (most recent call last):
+  File "<pyshell#15>", line 1, in <module>
+    a[17]
+IndexError: string index out of range
+>>> a[16]
+'t'
+>>> len(a)
+17
+>>> a[-1]
+'t'
+>>> a[-2]
+'r'
+>>> a[-0]
+'l'
+>>> b=a[0]+a[1]+a[2]+a[3]
+>>> b
+'life'
+>>> a[0:4]
+'life'
+>>> a[0:3]
+'lif'
+>>> a[0:5]
+'life '
+>>> a[0:]
+'life is too short'
+>>> a[:17]
+'life is too short'
+>>> a[:16]
+'life is too shor'
+>>> a[:18]
+'life is too short'
+>>> a[:100]
+'life is too short'
+>>> a[1:18]
+'ife is too short'
+>>> a[1:100]
+'ife is too short'
+>>> a[18]
+Traceback (most recent call last):
+  File "<pyshell#33>", line 1, in <module>
+    a[18]
+IndexError: string index out of range
+>>> a[17]
+Traceback (most recent call last):
+  File "<pyshell#34>", line 1, in <module>
+    a[17]
+IndexError: string index out of range
+>>> a[16]
+'t'
+>>> a[2:-2]
+'fe is too sho'
+>>> a[5:-2]
+'is too sho'
+>>> a[-1]
+'t'
+>>> a[-3]
+'o'
+>>> a[-2]
+'r'
+>>>