Python3.4实现从HTTP代理网站批量获取代理并筛选的方法示例

__author__ = 'multiangle'__edition__='python3.4'import threadingimport urllib.request as requestimport timerawProxyList=[]checkedProxyList=[]class proxycheck(threading.Thread): def __init__(self,proxy_list):  threading.Thread.__init__(self)  self.proxy_list=proxy_list  self.timeout=3  self.testurl='http://www.sina.cn/'  self.testStr='手机新浪网' def checkproxy(self):  cookies=request.HTTPCookieProcessor()  for proxy in self.proxy_list:   handler=request.ProxyHandler({'http':'http://%s'%(proxy)})   opener=request.build_opener(cookies,handler)   t1=time.time()   try:    req=opener.open(self.testurl,timeout=self.timeout)    res=req.read()    res=str(res,encoding='utf8')    usetime=time.time()-t1    if self.testStr in res:     checkedProxyList.append((proxy,usetime))   except Exception as e :    print(e) def run(self):  self.checkproxy()if __name__=='__main__': num=20 thread_num=10 checkThrends=[] url='YOUR PROXY URL' #提取代理的网站。 req=request.urlopen(url).read() req=str(req,encoding='utf-8') list=req.split('/r/n') #网站返回的是字符串格式，用'/r/n'进行分割 rawProxyList=list print('get raw proxy') for i in rawProxyList:  print(i) # s=proxycheck_test(rawProxyList) batch_size=int((len(rawProxyList)+thread_num-1)/thread_num) print(batch_size) for i in range(thread_num):  t=proxycheck(rawProxyList[batch_size*i:batch_size*(i+1)])  checkThrends.append(t) for i in range(checkThrends.__len__()):  checkThrends[i].start() for i in range(checkThrends.__len__()):  checkThrends[i].join() print(checkedProxyList.__len__(),' useful proxy is find') for i in checkedProxyList:  print(i)