code: def urlopen(self, url, data=None, *args, **kwargs):
          
          logger.info('opening: \'%s\'', url)
  
          if data is None:
              return self.opener.open(url)
  
          return self.opener.open(url, data)
docs: Same as urllib2.urlopen or urllib.request.urlopen,
          the only difference is that it links to the internal opener.