# -*- coding:utf-8 -*-

#简易登录接口
username = "root"
password = "pwd"
i=1
while True:
    _username = input("请输入用户名:")
    _password = input("请输入密码:")
    if username == _username and password == _password:
        print("欢迎登录，.",_username)
        break
    else:
        print("你的用户名和密码不正确!")
    if i == 3:
        print("输入超过三次，您被锁定了。")
        break
    else:
        i+=1

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# -*- coding:utf-8 -*-

#三级菜单
menus1 = ["0-吃喝","1-玩乐"]
menus2 = [["0-家常菜","1-甜品","2-饮料"],[1,2,3,4,5]]
menus3 = [["0-青菜","1-炒肉丝","2-炖蛋"],["蛋糕","果冻"],["奶茶","咖啡"]]

while True:
    print("欢迎进入点餐系统,请选择:")
    print(menus1)
    srv = int(input("1请输入你要的服务编号："))
    if srv == 9:
        flag = input("您确定要退出吗？[Y/N]")
        if flag == "y" or flag == "Y":
            print("see you later!")
            break
    while srv != 9:
        print(menus2[srv])
        eats = int(input("2请输入你需要的菜品："))
        if eats == 9:
            break
        while eats != 9:
            print(menus3[eats])
            eats1 = int(input("3请输入你要的菜："))
            if eats1 == 9:
                break
            print("您的菜 "+menus3[eats][eats1]+"，请品尝")
            print("----------------------------------------")

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