python之三層菜單遞歸

      首先非常感謝11期的學長薜保庫提供了一種非常實用函數遞歸方法，讓實現三層菜單如此簡單，不過對所遍歷的嵌套字典或列表格式有所要求。有特定的環境下非常實用。

      主要針對中國的各省市區進行展示，採用了百度的js介面：

                  http://passport.baidu.com/js/sitedata_bas.js

      格式大概如下：

var sitedata =
[
    { name:"請選擇", sub:[{name:"請選擇"}], type:1},
    { name:"北京",  sub:[{name:"請選擇"},{name:"東城區"},{name:"西城區"},{name:"崇文區"},{name:"宣武區"},{name:"朝陽區"},{name:"海澱區"},{name:"丰台區"},{name:"石景山區"},{name:"房山區"},{name:"通州區"},{name:"順義區"},{name:"昌平區"},{name:"大興區"},{name:"懷柔區"},{name:"平谷區"},{name:"門頭溝區"},{name:"密雲縣"},{name:"延慶縣"},{name:"其他"}], type:0},
    { name:"廣東",  sub:[{name:"請選擇",sub:[]},
	   { name:"廣州",  sub:[{name:"請選擇"},{name:"越秀區"},{name:"荔灣區"},{name:"海珠區"},{name:"天河區"},{name:"白雲區"},{name:"黃埔區"},{name:"番禺區"},{name:"花都區"},{name:"南沙區"},{name:"蘿崗區"},{name:"增城市"},{name:"從化市"},{name:"其他"}],type:0},
           { name:"深圳",  sub:[{name:"請選擇"},{name:"福田區"},{name:"羅湖區"},{name:"南山區"},{name:"寶安區"},{name:"龍崗區"},{name:"鹽田區"},{name:"其他"}], type:0},
           { name:"珠海",  sub:[{name:"請選擇"},{name:"香洲區"},{name:"斗門區"},{name:"金灣區"},{name:"其他"}],type:0},
		   {
           { name:"汕頭",  sub:[{name:"請選擇"},{name:"金平區"},{name:"濠江區"},{name:"龍湖區"},{name:"潮陽區"},{name:"潮南區"},{name:"澄海區"},{name:"南澳縣"},{name:"其他"}],type:0},
           { name:"韶關",  sub:[{name:"請選擇"},{name:"湞江區"},{name:"武江區"},{name:"曲江區"},{name:"樂昌市"},{name:"南雄市"},{name:"始興縣"},{name:"仁化縣"},{name:"翁源縣"},{name:"新豐縣"},{name:"乳源瑤族自治縣"},{name:"其他"}],type:0},
 }

具體代碼如下：

#!/usr/bin/env python
# -*- coding:utf-8 -*-
__author__ = 'xuebk'
import logging
import sys
reload(sys)
sys.setdefaultencoding('utf-8')
logger = logging.getLogger(__name__)

def search_a(sitedata,search=None):
    if search is None:
        for x in sitedata:
            print x['name'],",",
        print
        search = raw_input('請輸入相應名稱.:')
    print "search:"+search
    for i in sitedata:
        if search != i['name']:
            continue
        print('查詢到%s'%(i['name']))
        if 'sub' in i.keys():
            search_a(i['sub'])

if __name__ == '__main__':
    search_a(sitedata_bas)