Python学习第三天——三级目录

#coding=utf-8
#Version:python 3.6.0
#Tools:Pycharm 2017.3.2
_date_ = '2018/4/17/017 10:48'
_author_ = 'Hongyong'

address_data = {
    "Hubei":{
        "Wuhan":{"Car"},
        "Huanggang":{"Food"}
    },
    "Guangdong":{
        "Guangzhou":{"University"},
        "Shenzhen":{"Money"}
    },
    "Hongkong":{
        "Yuanlang":{"Park"},
        "Nanqu":{"Sea"}
    }
}

print(address_data)

while True:
    for i in address_data:
        print(i)
    choice1 = input("请选择>>> ")
    if choice1 in address_data:
        for i in address_data[choice1]:
            print(i)
        choice2 = input("请选择>>> ")
        if choice2 in address_data[choice1]:
            for i in address_data[choice1][choice2]:
                print(i)
        elif choice2 == "b":
            break
            while True:
                choice3 = input("请选择>>> ")
                if choice3 in address_data[choice1][choice2]:
                    print("已是最后一级目录，按b返回。")
                    for i in address_data[choice1][choice2][choice3]:
                        print(i)
                elif choice3 == "b":
                    break