1.1.1多级菜单练习--Python（Alex视频学习）201806011

多级菜单

     1、三级菜单

     2、可一次选择进入各子菜单

     3、所需新知识点：列表、字典

data={
    "北京":{
        "昌平":{
            "沙河":["shahe","chengshi"],
            "天通苑":["tiantong","yuan"]
        },
        "朝阳":{
            "奇葩说":["qipa","dahui"],
            "国贸":["guomap","hp"]
        }
     },
    "浙江":{
        "浦江":["九华山","金狮湖"],
        "义乌":["异国风情街","小商品市场"],
    },
    "上海":{
        "浦东":["陆家嘴","金桥"],
        "闵行":["虹桥","天街"],
        "奉贤":["油菜花","海边"],
        }
}

while True:
    for i in data:
        print(i)
    choice1 = input("input you choice1:")
    if choice1 in data:
            for i2 in data[choice1]:
                print(i2)
            choice2 = input("input you choice2:")
            if choice2 in data[choice1]:
                    for i3 in data[choice1][choice2]:
                        print(i3)
                    choice3=input("press b comeback，q exit")
                    if choice3=="q":
                        exit()
                    elif choice3=="b":
                        break
                    else:
                        print("conform your input")
            if choice2=="b":
                break