Python查询阿里巴巴关键字排名的方法
本文实例讲述了Python查询阿里巴巴关键字排名的方法。分享给大家供大家参考。具体如下:
这里使用python库urllib及pyquery基本东西的应用,实现阿里巴巴关键词排名的查询,其中涉及到urllib代理的设置,pyquery对html文档的解析
1.urllib基础模块的应用,通过该类获取到url中的html文档信息,内部可以重写代理的获取方法
classProxyScrapy(object): def__init__(self): self.proxy_robot=ProxyRobot() self.current_proxy=None self.cookie=cookielib.CookieJar() def__builder_proxy_cookie_opener(self): cookie_handler=urllib2.HTTPCookieProcessor(self.cookie) handlers=[cookie_handler] ifPROXY_ENABLE: self.current_proxy=ip_port=self.proxy_robot.get_random_proxy() proxy_handler=urllib2.ProxyHandler({'http':ip_port[7:]}) handlers.append(proxy_handler) opener=urllib2.build_opener(*handlers) urllib2.install_opener(opener) returnopener defget_html_body(self,url): opener=self.__builder_proxy_cookie_opener() request=urllib2.Request(url) #request.add_header("Accept-Encoding","gzip,deflate,sdch") #request.add_header("Accept","text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8") #request.add_header("Cache-Control","no-cache") #request.add_header("Connection","keep-alive") try: response=opener.open(request,timeout=2) http_code=response.getcode() ifhttp_code==200: ifPROXY_ENABLE: self.proxy_robot.handle_success_proxy(self.current_proxy) html=response.read() returnhtml else: ifPROXY_ENABLE: self.proxy_robot.handle_double_proxy(self.current_proxy) returnself.get_html_body(url) exceptExceptionasinst: printinst,self.current_proxy self.proxy_robot.handle_double_proxy(self.current_proxy) returnself.get_html_body(url)
2.根据输入的公司名及关键词列表,返回每个关键词的排名
defsearch_keywords_rank(keyword_company_name,keywords): defget_context(url): start=clock() html=curl.get_html_body(url) finish=clock() printurl,(finish-start) d=pq(html) items=d("#J-items-content.ls-item") items_c=len(items) printitems_c ifitems_c<38: returnget_context(url) returnitems,items_c result=OrderedDict() forkeywordinkeywords: forpage_indexinrange(1,9): u=url%(re.sub('\s+','_',keyword.strip()),page_index) items,items_c=get_context(u) b=False foritem_indexinrange(0,items_c): e=items.eq(item_index).find('.titlea') p_title=e.text() p_url=e.attr('href') e=items.eq(item_index).find('.crighth3.dot-product') company_name=e.text() company_url=e.attr('href') ifkeyword_company_nameincompany_url: total_index=(page_index-1)*38+item_index+1+(0ifpage_index==1else5) print'page%s,index%s,totalindex%s'%(page_index,item_index+1,total_index) b=True ifkeywordnotinresult: result[keyword]=(p_title,p_url,page_index,item_index+1,total_index,u) break ifb: break returnresult
希望本文所述对大家的Python程序设计有所帮助。