python正则表达式抓取成语网站内容的实现代码

#!/usr/bin/python
#anthor jiqunpeng
#time 20121124
#site: www.jb200.com
#
import urllib
import re
def getHtml(url): #从URL中读取html内容
    page = urllib.urlopen(url)
    html = page.read()
    page.close()
    return html
def getDictionary(html): #匹配成语
    reg = "<a href="/cy(d+)/(d+).html">(.*?)</a>"  
    dicList = re.compile(reg).findall(html)
    return dicList
def getItemSite():#手工把每个字母开头的页面数统计下来
    itemSite = {}#申明为空字典
    itemSite["A"] = 3
    itemSite["B"] = 21
    itemSite["C"] = 19
    itemSite["D"] = 18
    itemSite["E"] = 2
    itemSite["F"] = 14
    itemSite["G"] = 13
    itemSite["H"] = 15
    itemSite["J"] = 23
    itemSite["K"] = 6
    itemSite["L"] = 15
    itemSite["M"] = 12
    itemSite["N"] = 5
    itemSite["O"] = 1
    itemSite["P"] = 6
    itemSite["Q"] = 16
    itemSite["R"] = 8
    itemSite["S"] = 26
    itemSite["T"] = 12
    itemSite["W"] = 13
    itemSite["X"] = 16
    itemSite["Y"] = 35
    itemSite["A"] = 21
    return itemSite
  
if __name__== "__main__":
    dicFile = open("dic.txt","w+")#保存成语的文件
    domainsite = "http://chengyu.itlearner.com/list/"
    itemSite = getItemSite()
    for key,values in itemSite.items():
        for index in range(1,values+1):
            site = key +"_"+str(index)+".html"             
            dictionary = getDictionary(getHtml(domainsite+site))
            for dic in dictionary:
                dicFile.write(dic[2]+"@@CYn")#标记为成语，分词时使用
        print key+'字母成语抓取完毕'       
    dicFile.close()   
    print '全部成语抓取完毕'

<div class="avatar_name">
                <a href="/u/kkun/" title="kkun">kkun</a>
            </div>