字典

# coding:utf-8

locate = {
        "广东":{
            "深圳":{
                "龙岗":["坂田","坪山","大运"],
                "龙华":["清湖","布吉","明治"],
                "南山":["西丽","世界之窗","蛇口"],
                },
            "广州":{...},
            "中山":{...},
        },
        "北京":{
            "昌平":{
                "沙河":["test","baker"],
                "朝阳":["test2","bill"],
              }
          },


    }

while True:
    for i in locate:
        print(i)
    choise = input("请选择输入1>>:")
    if choise in locate:
        while True:
            for i2 in locate[choise]:
                print("\t",i2)
            choise2 = input("请选择输入2>>:")
            if choise2 in locate[choise]:
                while True:
                    for i3 in locate[choise][choise2]:
                        print("\t",i3)
                    choise3 = input("请选择输入3>>:")
                    if choise3 in locate[choise][choise2]:
                        while True:
                            for i4 in locate[choise][choise2][choise3]:
                                print("\t",i4)
                            choise4 = input("最后一层，按b返回>>:")
                            if choise4 == "b":
                                break
                    if choise3 == "b":
                        break

            if choise2 == "b":
                break