字典_ 三级菜单

#author:leon
data = {
    '北京':{
        '昌平':{
            "沙河":["oldboy","test"],
            "天通苑":["链家","我爱我家"]
        },
        '朝阳':{
            "望京":["奔驰","陌陌"],
            "国贸":["CCTV","hp"],
            "东直门":["平安","飞信"]
        }
    },
    "河北":{
        "保定":{
            "莲花池":["蛋糕","总督府"],
            "竞秀区":["时代","万博"]
        },
        "石家庄":{
            "桥西区":["火车站","汉堡"],
            "西柏坡":["久居"]
        },
        "邯郸":{}
    },
    "贵州":{
        "贵阳":{
            "云岩区":["中天花园","大营坡"],
            "南明区":["大西门","喷水池"]
        },
        "遵义":{
            "红花岗":["红军山","红军街"],
            "播州区":[]
        }
    }
}

while  True:
    for i in data:
        print(i)
    choice = input("选择进入>>>:")
    if choice in data:
        while True:
            for i2 in data[choice]:
                print("	",i2)
            choice2= input("选择进入>>>:")
            if choice2  in data[choice]:
                while True:
                    for i3  in  data[choice][choice2]:
                        print("		",i3)
                    choice3 = input("选择进入>>>:")
                    if  choice3 in data[choice][choice2]:
                        while True:
                            for i4 in data[choice][choice2][choice3]:
                                print("			", i4)
                            choice4= input("最后一层，按q返回>>>:")
                            if choice4== 'q':
                                break  #pass表示什么也不做，是占位符
                    if choice3 == 'q':
                        break
            if choice2 == 'q':
                break