python 使用字符串转换检查整数可被3整除

Posted 2021-05-10

#! /usr/bin/env python
# -*- coding: utf-8 -*-
# vim:fenc=utf-8
#
# Copyright © 2013 KuoE0 <[e-mail]>
#
# Distributed under terms of the MIT license.

"""

"""

def add_digits(x):
    return sum([int(d) for d in str(x)])

def divisible_3(x):
    while x >= 10:
        x = add_digits(x)
    return x in [0, 3, 6, 9]


if __name__ == "__main__":
    import sys
    for i in range(int(sys.argv[1])):
        print i, divisible_3(i)