Calculator.py

Write a Program that displays repeatedly a menu as shown in the sample run below.

The user will enter 1, 2, 3, 4 or 5 for choosing an addition, substation, multiplication, division or exit respectively.

After an operation is finished and output is displayed the menu is redisplayed, you may choose another operation or enter 5 to exit the program.

Each operation will ask the user for two numbers then calculate and display the answer.

All the Mathematical operations has to be defined within functions: add(number1,number2), subtract(number1,number2), multiply(number1, number2) and divide(number1,number2). The menu Also will be also defined within a function called menu()