code: def _query(self, urls):
          
          urls = list(set(urls))
          for i in range(0, len(urls), self.max_urls_per_request):
              chunk = urls[i:i+self.max_urls_per_request]
              response = self._query_once(chunk)
              if response.status_code == 200:
                  yield chunk, response
docs: Test URLs for being listed by the service.
  
          :param urls: a sequence of URLs  to be tested
          :returns: a tuple containing chunk of URLs and a response
          pertaining to them if the code of response was 200, which
          means at least one of the queried URLs is matched in either
          the phishing, malware, or unwanted software lists.