there already are named argumente:

def local_batch_predict(models, test_reader, prediction_file, api,
                        max_models=MAX_MODELS,
                        resume=False, output_path=None, output=None,
                        verbosity=True, method=PLURALITY_CODE, options=None,
                        session_file=None, debug=False,
                        prediction_info=NORMAL_FORMAT,
                        labels=None, label_separator=None, ordered=True,
                        exclude=None, models_per_label=1, other_label=OTHER):