Example calculator Python script.

main.py

def add(x, y):
    return x + y

def subtract(x, y):
    return x - y

def multiply(x, y):
    return x * y

def divide(x, y):
    return x / y

if __name__ == '__main__':
    x = int(input('Please enter a number: '))
    y = int(input('Please enter another number: '))
    print(add(x, y))
    print(subtract(x, y))
    print(multiply(x, y))
    print(divide(x, y))