省市三级菜单

# _*_coding:utf-8_*_
# Author:len liu



menu = {
    "四川省":{
        "成都市":{
            "一区":["一县","二县"],
            "二区":["一一县","二二县"]
        },
        "自贡市":{
            "三区":["4县","4.5县"],
            "四区":["6县","6.6县"]
        } } ,
    "浙江省":{
        "宁波市":{
            "五区":["1县","0县"],
            "六区":["22县","23县"]
         },
        "杭州市":{
            "七区":["3县","3县"],
            "八区":["4县","4县"]
        }},
    "广东省":{
        "珠海":{
            "九区":["5县","6县"],
            "拾区":["7县","8县"]
        },
        "梅州":{
            "十一区":["9县","10县"],
            "十二区":["11县","12县"]
        }
    }
}


print("show your province of china:\n")
while True:

    for i in menu:
        print(i)

    choice = input('pls input which province of your choice,input "q" for exit:').strip()

    if choice in menu:
        while True:
            for c in menu[choice]:
                print(c)

            choice2 = input('pls input which area of your choice or input "b" back to previous menu :').strip()
            if choice2 in menu[choice]:
                while True:
                    for a in menu[choice][choice2]:
                        print(a)
                    choice3 = input('pls input which village of your choice or input "b" back to previous menu :').strip()
                    if choice3 in menu[choice][choice2]:
                        for v in menu[choice][choice2][choice3]:
                            print(v)
                        choice4 = input('this is end of memu,input any keys back to previous menu,or input "q" exit!:').strip()
                        if choice4 == 'q':
                            exit()
                        else:
                            pass
                    elif choice3 == 'b':
                        break
            elif choice2 == 'b':
                break
    elif choice == "q":
         break