diff --git a/calculator.py b/calculator.py
new file mode 100644
index 0000000000000000000000000000000000000000..9f4bfdd88493f85d6c8a638fc4c2b3604770bde7
--- /dev/null
+++ b/calculator.py
@@ -0,0 +1,50 @@
+def plus(a, b):
+    return a+b
+
+def minus(a, b):
+    return a-b
+
+def multiply(a, b):
+    return a*b;
+
+def divide(a, b):
+    return a/b
+
+import calculator
+
+print(calculator.plus(10, 5))
+print(calculator.minus(10, 5))
+print(calculator.multiply(10, 5))
+print(calculator.divide(10, 5))
+print("---------------")
+import calculator as c
+
+print(c.plus(10, 5))
+print(c.minus(10, 5)) 
+print(c.multiply(10, 5))
+print(c.divide(10, 5))
+print("---------------")
+from calculator import *
+
+print(plus(10, 5))
+print(minus(10, 5))
+print(multiply(10, 5))
+print(divide(10, 5))
+print("---------------")
+from calculator import plus, minus
+
+print(plus(10, 5)) 
+print(minus(10, 5))
+#print(multiply(10, 5))
+#print(divide(10, 5))
+print("---------------")
+
+from calculator import plus
+from calculator import minus
+
+print(plus(10, 5)) 
+print(minus(10, 5))
+#print(multiply(10, 5))
+#print(divide(10, 5))
+
+