def?__init__(self):
????"""

????"""
????self.urls?=?url_manager.UrlManager()
????self.downloader?=?html_downloader.HtmlDownloader()
????self.parser?=?html_parser.HtmlParser()
????self.outputer?=?html_outputer.HtmlOutputer()

先在這里點擊UrlManager/HtmlDownloader等，按下快捷鍵"Alt + Enter"生成對應的類

然后再在下面的方法，按下"Alt + Enter"生成方法即可

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()