python生成随机密码

使用python生成随机密码

使用方法python randpass.py 10, 代码:

#!/usr/bin/env python
import sys
import random
import string

def usage():
    print "Usage: ./randompasswd.py num [num in (1-1024)]"
    exit(1)

def randomPassword(num):
    passwd = ''
    seed = string.letters + string.digits
    for i in xrange(num):
        passwd += seed![pic](random.randrange(1,len(seed)))
    return passwd

def main():
    if len(sys.argv) == 2:
        try:
            num = int(sys.argv![pic](1))
        except:
            usage()
        if num in xrange(1,1024):
            print randomPassword(num)
        else:
            usage()
    else:
        print randomPassword(20)

if __name__ == '__main__':
    main()