code: def clean_before_output(kw_matches):
      
      filtered_kw_matches = {}
  
      for kw_match, info in iteritems(kw_matches):
          if not kw_match.nostandalone:
              filtered_kw_matches[kw_match] = info
  
      return filtered_kw_matches
docs: Return a clean copy of the keywords data structure.
  
      Stripped off the standalone and other unwanted elements.