Merge pull request #847 from peastman/fetches

            args=(self, feed_dict_generator, self._get_tf("Graph"),

                  self.session, coord))

        enqueue_thread.start()

      output_tensors = [x.out_tensor for x in self.outputs]

      fetches = output_tensors + [train_op, self.loss.out_tensor]

      fetches = [train_op, self.loss.out_tensor]

      for feed_dict in create_feed_dict():

        try:

          fetched_values = self.session.run(fetches, feed_dict=feed_dict)