#!/usr/bin/env python

# _*_ coding:utf8 _*_

data = {

    "山东省":{

        "滨州市":{"惠民县","沾化县","无棣县","邹平县","阳信县"},

        "济南市":{"济阳县","商河县","平阴县","历下区","天桥区"},

        "菏泽市":{"定陶县","单县","巨野县","东明县","开发区"},

        "德州市":{"德城区","夏新县","平原县","陵县","乐陵县"}

    },

    "北京市":{

        "海淀区":{"航天科工","航天科技"},

        "朝阳区":{"巨人教育","老男孩教育"},

        "丰台区":{"下埔","岳各庄"}

    },

    "湖北省":{

        "武汉市":{"武昌区","江汉区","洪山区"},

        "荆州市":{"青山区","硚口区","江夏区"},

        "襄樊市":{"新洲区","南山区","北山区"}

    }

}

exit_flag = False

while not exit_flag:

    for i in data:

        print(i)

    choice = input("请选择进入：")

    if choice in data:

        while not exit_flag:

            for i1 in data[choice]:

                print("\t",i1)

            choice1 = input("请选择进入：")

            if choice1 in data[choice]:

                for i2 in data[choice][choice1]:

                    print("\t\t",i2)

                choice2 = input("最后一层，输入b，返回：")

                if choice2 == "b":

                    pass

                elif choice2 == "q":

                    exit_flag = True

            if choice1 == "b":

                break

            elif choice1 == "q":

                exit_flag = True