from random import choice
import string

all_chs = string.ascii_letters + string.digits

def gen_pass(n=8):  #默认是循环8次，也就是生成8位密码
    result = ''
    for i in range(n):
        ch = choice(all_chs)
        result +=ch
    return result

if __name__ == '__main__':
    print(gen_pass())
    print(gen_pass(4))  #生成4位的密码
    print(gen_pass(10)) #生成10位的密码


# 解释
# >>> import string
# >>> string.ascii_letters
# 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
# >>> string.digits
# '0123456789'

# 测试
# [root@zhuji pyrhon百例]# python3 37生成密码验证密码.py
# FsOHGZ87
# BNhA
# Q0wO0ANAzg