编写登陆接口

要求:

• 输入用户名密码
• 认证成功后显示欢迎信息
• 输错三次后锁定

user = [['yefei','123'],['yf','123'],['mm','123']]
count = 0
error_count = 0
while count < 3:
    user_name = input("请输入用户名:").strip()
    user_password = input("请输入密码:").strip()
    f = open(file= 'error.txt',mode='r',encoding='utf-8')
    data = f.read()
    if user_name in data:
        print("对不起!用户%s被锁定!请使用其它用户名登录!" % user_name)
    else:
        for i,v in enumerate(user):
            if user_name == v[0] and user_password == v[1]:
                print("欢迎,登陆成功!")
                exit()
            else:
                f = open(file='error.txt',mode='a+',encoding='utf-8')
                error_count += 1
                if error_count == 9:
                    f.write('%s状态:锁定' % user_name)
        print('您的用户密码输入有误!')
    count += 1
    f.close()

测试结果如下: