code: def main(*args):
      
      if not args:
          args = sys.argv[1:]
      logging.basicConfig(level=logging.INFO, stream=sys.stdout,
                          format='%(message)s')
      for gt in args:
          load_grammar(gt, save=True, force=True)
      return True
docs: Main program, when run as a script: produce grammar pickle files.
  
      Calls load_grammar for each argument, a path to a grammar text file.