code: def __start_commoncrawl_extractor(warc_download_url, callback_on_article_extracted=None, valid_hosts=None,
                                    start_date=None, end_date=None,
                                    strict_date=True, reuse_previously_downloaded_files=True,
                                    local_download_dir_warc=None,
                                    continue_after_error=True, show_download_progress=False,
                                    log_level=logging.ERROR,
                                    delete_warc_after_extraction=True,
                                    continue_process=True,
                                    log_pathname_fully_extracted_warcs=None):
      
      commoncrawl_extractor = CommonCrawlExtractor()
      commoncrawl_extractor.extract_from_commoncrawl(warc_download_url, callback_on_article_extracted,
                                                     valid_hosts=valid_hosts,
                                                     start_date=start_date, end_date=end_date,
                                                     strict_date=strict_date,
                                                     reuse_previously_downloaded_files=reuse_previously_downloaded_files,
                                                     local_download_dir_warc=local_download_dir_warc,
                                                     continue_after_error=continue_after_error,
                                                     show_download_progress=show_download_progress,
                                                     log_level=log_level,
                                                     delete_warc_after_extraction=delete_warc_after_extraction,
                                                     log_pathname_fully_extracted_warcs=__log_pathname_fully_extracted_warcs)
docs: Starts a single CommonCrawlExtractor
      :param warc_download_url:
      :param callback_on_article_extracted:
      :param valid_hosts:
      :param start_date:
      :param end_date:
      :param strict_date:
      :param reuse_previously_downloaded_files:
      :param local_download_dir_warc:
      :param continue_after_error:
      :param show_download_progress:
      :param log_level:
      :return: