python urllib模块和pyquery实现阿里巴巴排名查询
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。
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。
代码：
class ProxyScrapy(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] if PROXY_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) return opener def get_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() if http_code == 200: if PROXY_ENABLE: self.proxy_robot.handle_success_proxy(self.current_proxy) html = response.read() return html else: if PROXY_ENABLE: self.proxy_robot.handle_double_proxy(self.current_proxy) return self.get_html_body(url) except Exception as inst: print inst,self.current_proxy self.proxy_robot.handle_double_proxy(self.current_proxy) return self.get_html_body(url)