code: def batch_string(self, content):
          
          pipe_send, pipe_recv = multiprocessing.Pipe()
          self._pipe_end = pipe_recv
          proc = multiprocessing.Process(target = self.cmdloop)
          for line in content.split('\n'):
              pipe_send.send(line)
          pipe_send.close()
          proc.start()
          proc.join()
docs: Process a string in batch mode.
  
          Arguments:
              content: A unicode string representing the content to be processed.