day06:三级菜单练习0218

#1：省份数列：
data = {
    "北京":{
        "昌平":{
            "沙河":["oldboy","电信"],
            "银河":[ "链家地产","我爱我家"]
        },
        "朝阳":{
            "望京":["奔驰","陌陌"],
            "东直门":["飞信","HP"]
        },
        "海淀":{
            "test1":['address311','address312'],
            "test2":['address321','addrress322']
        }
    },
    "广东":{
        "东莞":{
            "address201":["address311","address312"],
            "address202":["address321","address322"]
        },
        "梅州":{
            "maddress201":["maddress301","maddress302"],
            "maddress202":["maddress311","maddress312"]
        }
    },
    "广西":{
        "百色":{
            "Baddress201":["Baddress301","Baddress302"],
            "Baddress202":["Baddress311","Baddress312"]
        },
        "南昌":{
            "NBaddress201":["Naddress301","Naddress302"],
            "N2Baddress212":["NBaddress311","Naddress312"]
        }
    }

}

exit_flag= False
while not exit_flag:
    for i in data:
        print(i)
    choice = input("请输入地址进入下一级菜单：")
    if choice in data:
        while not exit_flag:
            for i2 in data[choice]:
                print("\t",i2)
            choice2 = input("请输入地址进入下一级菜单,按r键返回上一级菜单：")
            if choice2 in data[choice]:
                while not exit_flag:
                    for i3 in data[choice][choice2]:
                        print ("\t\t",i3)
                    choice3 = input("请输入地址进入下一级菜单,按r键返回上一级菜单：")
                    if choice3 in data[choice][choice2]:
                        while not exit_flag:
                            for i4 in data[choice][choice2][choice3]:
                                print ("\t\t",i4)
                            choice4 = input ("最后一层，按r返回上一级菜单:")
                            if choice4 == "r":
                                break
                            elif choice4 == "q":
                                exit_flag = True
                    elif choice3 == "r":
                        break
                    elif choice3 == "q":
                        exit_flag = True
            if choice2 == "r":
                break
            elif choice2 == "q":
                exit_flag = True
    if choice == "r":
         break
    elif choice == "q":
                exit_flag = True