python随机生成5个20位密码（数字+字符+符号）

#!/usr/bin/env python
# -*- coding: utf-8 -*-
import string
from os import urandom
from random import choice

passwd_length = 20
passwd_count = 5
passwd_seed = string.digits + string.ascii_letters + string.punctuation

def generate_passwd():
    '''''Function to generate a password'''
    passwd = []
    while (len(passwd) < passwd_length):
        passwd.append(choice(passwd_seed))
    return ''.join(passwd)

if __name__ == '__main__':
    for i in range(0, passwd_count):
        print generate_passwd()