def _create_index_name(self, type, columns):
        if not isinstance(columns, list):
            columns = [columns]

        index = '%s_%s_%s' - (self._table, '_'.join([str(column) for column in columns]), type)

        return index.lower().replace('-', '_').replace('.', '_')
dataset/ETHPy150Open sdispater/orator/orator/schema/blueprint.py/Blueprint._create_index_name/operator `%` -> `-`