code: def _reader(self, name, stream, outbuf):
          
          while True:
              s = stream.readline()
              if not s:
                  break
              s = s.decode('utf-8').rstrip()
              outbuf.append(s)
              logger.debug('%s: %s' % (name, s))
          stream.close()
docs: Thread runner for reading lines of from a subprocess into a buffer.
  
          :param name: The logical name of the stream (used for logging only).
          :param stream: The stream to read from. This will typically a pipe
                         connected to the output stream of a subprocess.
          :param outbuf: The list to append the read lines to.