aa:a123
bb:b123
cc:c123
dd:d123

aa
bb

#！usr/bin/env python
#-*- coding:utf-8-*-
# Author burnywen
import sys

count =0
lock_name = open("lock_name","r+",encoding = "utf-8")
user_name = open("user_name", "r", encoding="utf-8")


while count<3:
    
    username = input("输入用户用户名：").strip()#去除空格
    password = input("输入密码：").strip()
    lock_name.seek(0)   #使指针回到开头，否则读取为空
    locklist = lock_name.readlines()  #读取数据

    for line in locklist:     #遍历数据
        locklist = line.strip()   #去除空格
        if username ==locklist:
            print("账户已被锁定")
            break
        user_name.seek(0)
        userlist = user_name.readlines()
        for userline in userlist:     #遍历用户文件
            user, pass_word = userline.strip().split(":")   #去除空格并按“：”前后切片
            if username==user:
                if password ==pass_word:
                    print("欢迎登陆……")
                    exit()
                else:
                    print("账户密码错误")
                break
        break
    count += 1
else:
    lock_name.write("\n" + username)
    print("次数已用完")
    exit()