模拟用户登录

# data.json 文件同目录下[  {    "id": 1,    "username": "zhangshan",    "password": "123qwe",    "lock": false  },  {    "id": 2,    "username": "lisi",    "password": "123qwe",    "lock": false  },  {    "id": 3,    "username": "wangwu",    "password": "123qwe",    "lock": false  }]

　　

import json  # 引入模块count = 1# 打开一个json文件data = open("./data.json", encoding='utf-8')# 转换为python对象strJson = json.load(data)flag = FalselockFlag = Falsewhile count <= 3:    username = input("请输入用户名:")    password = input('请输入密码:')    for user in strJson:        if username == user['username'] and password == user['password']:            if not user['lock']:                flag = True            else:                lockFlag = True            break    if flag:        print('登录成功!!')        break    else:        print('账号或密码错误')    count = count + 1# 输出(注意多层结构)# print(strJson[0]['id'])# for item in strJson:#     print(item)