docs: def parse_range_header(range):
      '''
      Parse a range header as used by the dojo Json Rest store.
  
      :param str range: The content of the range header to be parsed.
          eg. `items=0-9`
      :returns: A dict with keys start, finish and number or `False` if the
          range is invalid.
      '''
      match = re.match('^items=([0-9]+)-([0-9]+)$', range)
      if match:
          start = int(match.group(1))
          finish = int(match.group(2))
          if finish < start:
              finish = start
          return {
              'start': start,
              'finish': finish,
              'number': finish - start + 1
          }
      else:
          return False