[파이썬🐍] 프로그래머스 : 콜라츠 추측

def solution(num):
    answer = 0 
    if num == 1: 
        return 0 
    while True: 
        if num % 2 == 0:
            num = num/2 
            answer += 1 
        else:
            num = (num*3)+1 
            answer += 1 
        if num == 1: 
            return answer 
        elif answer == 500: 
            return -1 
    return answer