#!/usr/bin/env python
# -*- coding:utf-8 -*-
# Author：Jack.Lee
# FileName: three_level_menu
#三級菜單采用字典來做，例子：省份—地市—景點
spot = {
    '廣東':{
        "廣州":{"廣州塔","農講所","白云山"},
        "深圳":{"世界之窗","歡樂谷","錦繡中華"},
        "湛江":{"湖光巖","海濱公園","觀海長廊"}
    },
    '廣西':{
        "南寧":{"青秀山","鳳凰嶺","龍虎山"},
        "桂林":{"陽朔","漓江","西街"},
        "北海":{"銀灘","老街","潿洲島"}
    },
    '浙江':{
        "杭州":{"西湖","靈隱寺","千島湖"},
        "溫州":{"青龍湖","九龍潭","望海樓"},
        "寧波":{"東錢湖","天一閣","二靈塔"}
    }
}

exit_flag = False

while not exit_flag:
    for P in spot:     #打印第一層菜單
        print(P)
    province = input("請輸入省份（按q退出）：")
    if province == "q":
        print("您已退出系統，歡迎下次再用！")
        break
    if province in spot:
        while not exit_flag:    #進入二級菜單循環
            for C in spot[province]:
                print(C)
            city = input("請輸入地市（按q退出,b返回上一級）：")
            if city == "b":
                break
            elif city == "q":
                exit_flag = True
                print("您已退出系統，歡迎下次再用！")
            elif city in spot[province]:
                while not exit_flag:  # 進入三級菜單循環
                    for S in spot[province][city]:
                        print(S)
                    scenic_spot = input("請輸入景區（按q退出,b返回上一級）：")
                    if scenic_spot == "b":
                        break
                    elif scenic_spot == "q":
                        exit_flag = True
                        print("您已退出系統，歡迎下次再用！")
                    elif scenic_spot in spot[province][city]:
                        print("您選擇的景區：",'\033[34;1m',scenic_spot,'\033[0m')             #30:黑，31:紅 ，32:綠，33:黃 ，34:藍色，35:紫色，36:深綠 ，37:白色；
                        exit_flag = True
                    else:
                         print("\033[31;0m對不起！你輸入的景區不存在，請重新輸入！\033[0m")  #打印錯誤信息，并且用紅色標注。顏色標識方法：\033[顯示方式;前景色;背景色m
            else:
                print("\033[31;0m對不起！你輸入的地市不存在，請重新輸入！\033[0m")
    else:
        print("\033[31;0m對不起！你輸入的省份不存在，請重新輸入！\033[0m")