读取本地json文件,解析json

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 = False
lockFlag = False
while 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)