code: def replace_with_text_stream(stream_name):
      
      new_stream = TEXT_STREAMS.get(stream_name)
      if new_stream is not None:
          new_stream = new_stream()
          setattr(sys, stream_name, new_stream)
      return None
docs: Given a stream name, replace the target stream with a text-converted equivalent
  
      :param str stream_name: The name of a target stream, such as **stdout** or **stderr**
      :return: None