i=6
username = "xfs"
userpassword = "xf090908"
while True:
    if i>=0:
        name = input("请输入用户名:")
        password = input("请输入密码:")
        i-=1
        if name == username and password == userpassword:
            print("登录成功!")
            break
        if name != username:
            print("用户名称错误!请重新输入")
            print("温馨提示:您还有"+str(i)+"次登录机会")
            continue
        if password != userpassword:
            print("用户密码错误!请重新输入")
            print("温馨提示:您还有"+str(i)+"次登录机会")
            continue
    print("你的账户已被锁定,请带身份证来我公司解锁")
    exit()
print("欢迎来到贝尔编程!")