code: def csv_import(self, csv_source, encoding='utf-8', transforms=None, row_class=DataObject, **kwargs):
          reader_args = dict((k, v) for k, v in kwargs.items() if k not in ['encoding',
                                                                            'csv_source',
                                                                            'transforms',
                                                                            'row_class'])
          reader = lambda src: csv.DictReader(src, **reader_args)
          return self._import(csv_source, encoding, transforms, reader=reader, row_class=row_class)