Collatz

def collatz(number):
    if int(number) % 2 == 0:
        return int(number) // 2
    else:
        return int(number) * 3 + 1

print("Enter a positive integer:")
x = input()

while collatz(x) > 1:
    print(collatz(x))
    x = collatz(x)

print(collatz(x))