docs: def ziparchive_opener(path, pattern='', verbose=False):
      """Opener that opens files from zip archive..
  
      :param str path: Path.
      :param str pattern: Regular expression pattern.
      :return: Filehandle(s).
      """
      with zipfile.ZipFile(io.BytesIO(urlopen(path).read()), 'r') if is_url(path) else zipfile.ZipFile(path, 'r') as ziparchive:
          for zipinfo in ziparchive.infolist():
              if not zipinfo.filename.endswith('/'):
                  source = os.path.join(path, zipinfo.filename)
  
                  if pattern and not re.match(pattern, zipinfo.filename):
                      logger.verbose('Skipping file: {}, did not match regex pattern "{}"'.format(os.path.abspath(zipinfo.filename), pattern))
                      continue
  
                  logger.verbose('Processing file: {}'.format(source))
                  filehandle = ziparchive.open(zipinfo)
                  yield filehandle