建立一个简单的三级菜单查询

# Author:Macheng

laojia_family = {
    "大姑家":{
        "代江家":["代江", "大嫂", "代然"],
        "代欧夕家":["代欧夕", "小朵朵", "大朵朵"]
    },
    "二姑家":{
        "代国强家":["代国强", "代海丽", "代涵"],
        "代国秋家":["代国秋"]
    },
    "老伯家":{
        "张静家":["张静"]
    }
}

tag2 = True
tag3 = True
print("-----------有如下长辈列表")
while True:
    for i in laojia_family:
        print(i)
    choice1 = input("-------------请输入你要查询的哪个长辈家呢？（‘q’直接退出程序）")
    if choice1 in laojia_family:
        old_family_choice = choice1
        tag2 = True #重置tag2 为真
        while tag2:
            for j in laojia_family[old_family_choice]:
                print(j)
            choice2 = input("-----------请输入你要查询的哪个兄弟家呢？（‘u’ 返回上级，‘q’直接退出程序）")
            if choice2 in laojia_family[old_family_choice]:
                yung_family_choice = choice2
                tag3 = True #重置 tag3 为真
                while tag3:
                    for k in laojia_family[old_family_choice][yung_family_choice]:
                        print(k)
                    choice3 = input("------------已经到了菜单的最底层，按‘u’返回上一层，按‘q’直接退出程序")
                    if choice3 == "u":
                        tag3 = False
                    elif choice3 == "q":
                        exit()
                    else:
                        print("你的输入不正确，请重新输入！")
            elif choice2 == "u":
                tag3 = False
                tag2 = False
            elif choice2 == "q":
                exit()
            else:
                print("你的输入不正确，请重新输入！")
    elif choice1 == "q":
        exit()
    else:
        print("你的输入不正确，请重新输入！")