python 生成动态密码

import string
import random
def gen_psd(length=10):
　　"""length is password length"""
　　letters = string.ascii_lowercase + string.digits
　　times = length/len(letters)+1
　　#print('times: ', times)
　　pswd = ''.join([random.choice(letters*int(times)) for _ in range(length)])
　　return pswd

if __name__ == '__main__':
　　print(gen_psd(57))