Collatz Conjecture

CollatzConjecture.py

number=100
def odd(n):
    return n % 2 != 0

def calc(n):
    print(n)
    if odd(n):
        n=(n*3)+1
    else:
        n=n/2
    if n != 1:
        return calc(n)
    print(" and back to 1")
    return

calc(number);