编写登陆接口

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 = "jean"
pwd = "123456"
count = 0
while count < 3:
    count += 1
    username = input("username: ")
    passworld = input("passworld: ")

    if count == 3:
        print("Account is locked..")
        exit(1)

    if username == user and passworld == pwd:
        print("Welcome {name} login.".format(name=username))
        exit(1)
    else:
        print("invliad user or password. try again")

python Day03-2