code: def _log_progress(self, bytes_downloaded):
      
      self._total_bytes_downloaded += bytes_downloaded
      now = time.time()
      if (self._interactive_mode() or
          now - self._last_progress_msg_print_time > 15):
        # Print progress message every 15 secs or if interactive progress
        # tracking is enabled.
        self._print_download_progress_msg(
            "Downloading %s: %s" % (self._url,
                                    tf_utils.bytes_to_readable_str(
                                        self._total_bytes_downloaded, True)))
        self._last_progress_msg_print_time = now
docs: Logs progress information about ongoing module download.
  
      Args:
        bytes_downloaded: Number of bytes downloaded.