from?baike_spider?import?url_manager,html_downloader,html_parser,html_output

class?SpiderMain():
????def?__init__(self):
????????self.urls?=?url_manager.UrlManager()
????????self.downloader?=?html_downloader.HtmlDownloader()
????????self.parser?=?html_parser.HtmlParser()
????????self.outputer?=?html_output.HtmlOutputer()

????def?craw(self,root_url):
????????count?=?1
????????self.urls.add_new_url(root_url)
????????while?self.urls.has_new_url():
???????????try:
????????????????new_url?=?self.urls.get_new_url()
????????????????print?'craw?%d:?%s'%(count,new_url)
????????????????html_cont?=?self.downloader.download(new_url)
????????????????new_urls,new_data?=?self.parser.parse(new_url,html_cont)
????????????????self.urls.add_new_urls(new_urls)
????????????????self.outputer.collect_data(new_data)
????????????????
????????????????if?count?==?1000:
????????????????????break
????????????
????????????????count?=?count?+?1
???????????except:
????????????????print?'craw?failed'
????????self.outputer.output_html()
????
????

if?__name__=="_main_":
????root_url?=?"http://baike.baidu.com/view/21087.htm"
????obj_spider?=?SpiderMain()
????obj_spider.craw(root_url)

檢查了半天，沒發(fā)現(xiàn)問題啊。為啥還會報導入模塊的錯誤嘞。