code: def parse_match(match):
      
      try:
          upload = FileUpload.objects.get(slug=match.group(1))
      except FileUpload.DoesNotExist:
          upload = None
      options = parse_options(match.group(2))
      return (upload, options)
docs: Accept an re match object resulting from an ``UPLOAD_RE`` match
      and return a two-tuple where the first element is the
      corresponding ``FileUpload`` and the second is a dictionary of the
      key=value options.
  
      If there is no ``FileUpload`` object corresponding to the match,
      the first element of the returned tuple is None.