import string ,urllib2 def baidu_tieba(url,begin_page,end_page):     for i in range(begin_page, end_page+1):         sName = string.zfill(i,5)+ '.html'         print '正在下载第' + str(i) + '个网页，并将其存储为' + sName + '..........'         f = open (sName,'w+')         m = urllib2.urlopen(url + str(i)).read()         f.write(m)         f.close() bdurl = str(raw_input('url：  n')) begin_page = int(raw_input('begin :n')) end_page = int(raw_input('end : n')) baidu_tieba(bdurl,begin_page,end_page)