Development - Beginner, exercise 30

Text

Write down a small function in Python that takes in input two integers and returns 0 if they are equal, -1 if the first is divisible by the second (i.e. the rest of the division is 0), 1 if the second is divisible by the first (i.e. the rest of the division is 0), otherwise it returns None.

Solution

def test_f(x, y, expected):
    result = f(x, y)
    if expected == result:
        return True
    else:
        return False


# Code of the function
def f(x, y):
    if x == y:
        return 0
    elif x % y == 0:
        return -1
    elif y % x == 0:
        return 1
    else: 
        return None


# Tests
print(test_f(5, 5, 0))
print(test_f(5, 10, 1))
print(test_f(10, 5, -1))
print(test_f(5, 7, None))

Additional material

The runnable Python file is available online.