用户登录程序，读取文件用户名，锁定写入文件

读取文件：

mport json

user_list = {    ‘andy‘: "123456",    ‘william‘:‘123456‘,    ‘abc‘: "123456",    ‘bcd‘:‘123456‘,    ‘cde‘: ‘123456‘,    ‘def‘: "123456",    ‘efg‘: ‘123456‘,    }

jsObj = json.dumps(user_list)fileObject = open(‘jsonFile.json‘, ‘w‘)fileObject.write(jsObj)fileObject.close()

用户登录程序：

#Author:xiesongyouimport jsontimes = 0login = Falsewhile times < 3 and login == False: #用户名错可以输入3次用户名    with open(‘login_3_times.json‘) as json_file:        data = json.load(json_file)    username=input("请输入用户名>>")    if username in data:        print("用户已锁定，请联系管理员！")        login = True    else:        fileObject = open(‘jsonFile.json‘)        user_list = json.load(fileObject)        if username in user_list:            count = 0            userpwd = input("请输入密码>>")            while count<3:

if userpwd == user_list[username]:                    login = True                    print("欢迎登陆...")                    break                count += 1                if count < 3: #可以输入3次密码                    userpwd = input("请重新输入密码>>")                else:                    with open(‘login_3_times.json‘) as json_file:                        data = json.load(json_file)                    data[username]="123456"

jsObj = json.dumps(data)                    fileObject = open(‘login_3_times.json‘,"w")                    fileObject.write(jsObj)                    fileObject.close()                    print("用户已锁定！")        else:

times += 1            print("用户名错误！%d 次"%times)

原文地址：https://www.cnblogs.com/xiesongyou/p/8323542.html