code: def _download_extract_archive(self, url):
          
          self.logger.info('Downloading zipfile from ipgeobase.ru...')
          temp_dir = tempfile.mkdtemp()
          archive = zipfile.ZipFile(self._download_url_to_string(url))
          self.logger.info('Extracting files...')
          file_cities = archive.extract(settings.IPGEOBASE_CITIES_FILENAME, path=temp_dir)
          file_cidr = archive.extract(settings.IPGEOBASE_CIDR_FILENAME, path=temp_dir)
          return {'cities': file_cities, 'cidr': file_cidr}
docs: Returns dict with 2 extracted filenames