def _filter_if_any(self, substep_dict):
        if substep_dict['type'] == 'script':
            if 'pre_filter' in substep_dict:
                return shlex_split(substep_dict['pre_filter'])
        return None
dataset/ETHPy150Open Yelp/mrjob/mrjob/local.py/LocalMRJobRunner._filter_if_any/original