city_map = {
    "湖北":{"武汉":["武昌","汉阳","汉口"],
            "黄冈":["黄州","红安","麻城"]},
    "吉林":{"长春":["高新区","南关区"],
            "四平":["东区","西区"]}
}  #定义一个字典
print ("--------地图--------")
for i in city_map:    #遍历字典的key，列出省市的名字
     print("       ",i)
print ("-------------------")
for i in range(3):
    city_name =input("请输入你要查询的省\n")
    if city_name in city_map:
        sheng_name = city_map[city_name]
        print ("%s省包含以下区"%city_name)
        for x in sheng_name:
            print (x)
        shi_name = sheng_name.keys()
        shi_name_input = input("请输入需要查询的市")
        if shi_name_input in shi_name:
            quxian_name = city_map[city_name][shi_name_input]
            print("%s包含的区名有:"%shi_name_input)
            for k in quxian_name:
                print(k)
            exit()
        else:
            print("输入错误")
            pass
    else:
        print("输入错误")
        pass
else:
    print("输入超过三次,结束")

老男孩python_12期_第一天_homework_三级菜单