def/db.py

import json


class MysqlDatabases:
    def __init__(self):
        self.users = json.loads(open('users.json', mode='r', encoding='utf-8').read())
        self.bkuser = json.loads(open('bkuser.json', mode='r', encoding='utf-8').read())

    def check_login(self, username, password):
        for user in self.users:
            if username == user['username']:
                if password == user['password']:
                    return True, '登录成功'
                else:
                    return False, '登录失败，密码不存在'
        return False, '登录失败，用户不存在'

    def all(self):
        return self.bkuser

    def insert(self, bk):
        self.bkuser.append(bk)

    def delete_by_username(self, name):
        for bk in self.bkuser:
            print(bk)
            if bk['name'] == name:
                self.bkuser.remove(bk)
                return True, f'{name}删除用户成功'
        return False, f'{name}用户不存在'

    def search_by_username(self, name):
        for bk in self.bkuser:
            print(bk)
            if bk['name'] == name:
                return True, bk
        return False, f'{name}用户不存在'

    def update(self, bk1):
        for bk in self.bkuser:
            if bk['name'] == bk1['name']:
                bk.update(bk1)
                return True, f'{bk1["name"]}用户修改数据成功'
        return False, f'{bk1["name"]}用户不存在'

    def register(self,user1):
        pass


db = MysqlDatabases()

if __name__ == '__main__':
    # print(db.check_login('admin','123456'))
    # print(db.all())
    print(db.search_by_username('张三'))