def fizzBuzz():
    def num_case(num, test_num):
        if num%test_num==0:
            return True
    for num in range (0, 21):
        print((str(num) + ":")
        if (num_case(num, 3) and (num_case(nuprint("FizzBuzz")
        elif (num_case(num, 3)):
            print("Fizz")
        elif (num_case(num, 5)):
            print("Buzz")
        else:
            print()

fizzBuzz()