python创建模块的注意点

#!/usr/bin/env python3

# -*- coding: utf-8 -*-

' a test module '

__author__ = 'Michael Liao'

import sys

def test():

    args = sys.argv

    if len(args)==1:

        print('Hello, world!')

    elif len(args)==2:

        print('Hello, %s!' % args[1])

    else:

        print('Too many arguments!')

if __name__=='__main__':

    test()