设计一个三级菜单,要求能够下钻,能够推出,比较笨的方法 # coding=utf-8 # Author: RyAn Bi data = { 'beijing':{ 'changping':{ 'wudaokou':['oldboy','test'], 'sanlitun':['oldboy','test'], 'wangjing':['oldboy','test'] }, 'dongcheng':{ 'wudaokou':['oldboy','test'], 'sanlitun':['oldbo