import httplibimport urllib2import timefrom threading import Threadfrom Queue import Queuefrom time import sleepproxy = 'your proxy';opener = urllib2.build_opener( urllib2.ProxyHandler({'http':proxy}) )urllib2.install_opener( opener )ids = {};for i in range(1,110): try:  listUrl = "http://www.someweb.net/sort/list_8_%d.shtml" % (i);  print listUrl;  page = urllib2.urlopen(listUrl).read();  speUrl = "http://www.someweb.net/soft/";  speUrlLen = len(speUrl);  idx = page.find(speUrl,0);  while idx!=-1:   dotIdx = page.find(".",idx + speUrlLen);   if dotIdx != -1:    id = page[idx + speUrlLen:dotIdx];    ids[id] = 1;   idx = page.find("http://www.someweb.net/soft/",idx + speUrlLen); except:  pass;q = Queue()NUM = 5failedId = [];def do_somthing_using(id): try:  url = "http://www.someweb.net/download.php?softid=%s&type=dx" % (id);  h2 = httplib.HTTPConnection("your proxy", "you port");  h2.request("HEAD", url);  resp = h2.getresponse();  header = resp.getheaders();  location = header[3][1];    sContent = urllib2.urlopen(location).read();  savePath = "C://someweb//%s.rar" % (id);  file=open(savePath,'wb');  file.write(sContent);  file.close();   print savePath + " saved"; except:  pass;def working(): while True:  arguments = q.get()  do_somthing_using(arguments)  sleep(1)  q.task_done()for i in range(NUM): t = Thread(target=working) t.setDaemon(True) t.start()for id in ids: q.put(id)q.join()