Python之 七级字典查询

# -*- coding:utf-8 -*-


# 作业要求：
# 打印直辖市，省，市，县，区，街道五级菜单；
# 可以一层一层地进入到所有层
# 可以退出到上一层
# 可随时退出程序


mapChina = {
    "中华人民共和国": {
        "北京": {
            "市区": {
                "东城区": {},
                "西城区": {},
                "朝阳区": {},
                "海淀区": {},
                "石景山区": {},
                "丰台区": {},
            },
            "远郊区": {
                "顺义区": {},
                "怀柔区": {},
                "密云区": {},
                "延庆县": {},
                "昌平区": {},
                "平谷区": {},
                "门头沟区": {},
                "房山区": {},
                "通州区": {},
            },
        },
        "湖南": {
            "长沙市": {
                "望城县": {},
                "宁乡县": {},
                "浏阳县级市": {},
                "长沙县": {
                    "福临镇": {},
                    "白沙乡": {},
                    "高桥镇": {},
                    "黄花镇": {},
                    "暮云镇": {},
                    "跳马镇": {},
                    "果园镇": {},
                    "黄花镇": {
                        "泉塘安置小区": {
                            "中联重科": {
                                "思想构筑未来": "志存无息，博厚悠远",
                            },
                            "很多学校": {
                                "各种学校": "各种湖南小吃",
                            },
                        },
                        "黄花机场": {},
                        "湖南农业大学": {},
                        "徐特立公园": {},


                    },
                },
            },
            "株洲市": {
                "攸县": {},
                "茶陵": {},
                "炎陵": {},
                "醴陵": {},
            },
            "湘潭市": {},
            "衡阳市": {},
            "邵阳市": {},
            "岳阳市": {},
            "常德市": {},
            "张家界市": {},
            "益阳市": {},
            "郴州市": {},
            "永州市": {},
            "娄底市": {},
            "怀化市": {},
            "湘西少数民族自治区": {},
        },
        "重庆": {},
        "四川": {},
        "江西": {},
        "陕西": {},
        "福建": {},
        "上海": {},
        "浙江": {},
        "其他省市自治区直辖市": {},
    }
}

# print(type(mapChina["中华人民共和国"]))
# print(mapChina["中华人民共和国"]["湖南"])
# print(mapChina["中华人民共和国"]["湖南"]["长沙市"]["长沙县"]["黄花镇"]["泉塘安置小区"]['中联重科'])


choose_list = []
mapChina_new = mapChina

print("输入‘b’键返回上一层，输入‘q’键退出到初始界面，输入‘qq’直接退出程序。")
print(mapChina.keys())


while True:

    choose = input("请输入需要访问的区域名称： ")
    if choose == 'qq':
        break
    elif choose == 'q':
        mapChina_new = mapChina
        continue
    elif choose == "b":
        if mapChina_new == mapChina:
            continue
        else:
            mapChina_new = choose_list.pop()
            for key1 in mapChina_new.keys():
                print(key1)
    elif choose in mapChina_new.keys():
        choose_list.append(mapChina_new)
        mapChina_new = mapChina_new[choose]
        for key in mapChina_new.keys():
            print(key)
    elif not mapChina_new.values():
        print("这是最后一层了，请输入‘b’键返回")
        continue
    else:
        print("Invalid Input.Try Again!")