username = "Anker"
passward = "Abc123"
number =2
for i in range(1,4,1):
    _username = input("username:")
    _passward = input("passward:")
    if _username==username and _passward==passward:
        print("登录成功")
        break
    else:
        print("username or passward wrong,please input again.remain :",number)
        number = number - 1
else:
    print("输入三次错误，已锁定")