Added Calculator code in python

Add Code Here/calculator.py

@@ -0,0 +1,32 @@
+def add(a,b):
+    return (a+b)
+def sub(a,b):
+    return (a-b)
+def mult(a,b):
+    return (a*b)
+def div(a,b):
+    return (a//b)
+
+
+print("1. Addition")
+print("2 . Subtraction")
+print("3. Multiplication")
+print("4. Division")
+
+
+while True:
+    choice = int(input("Enter Choice "))
+    if choice == 1 or choice ==2 or choice ==3 or choice ==4 or choice ==5:
+        a= int(input("Enter 1st number"))
+        b= int(input("Enter 2nd number"))
+        if choice == 1:
+            print(add(a,b))
+        elif choice == 2:
+            print(sub(a,b))
+        elif choice == 3:
+            print(mult(a,b))
+        elif choice == 4:
+            print(div(a,b))
+        else:
+            print("Enter valid choice")
+            break