def import_bert(self, filename, **kwargs):
        """BERT .ohm file import"""
        timestep = kwargs.get('timestep', None)
        if 'timestep' in kwargs:
            del (kwargs['timestep'])

        self.logger.info('Unified data format (BERT/pyGIMLi) file import')
        with LogDataChanges(self, filter_action='import',
                            filter_query=os.path.basename(filename)):
            data, electrodes, topography = reda_bert_import.import_ohm(
                filename, **kwargs)
            if timestep is not None:
                data['timestep'] = timestep
            self._add_to_container(data)
            self.electrode_positions = electrodes  # See issue #22
        if kwargs.get('verbose', False):
            print('Summary:')
            self._describe_data(data)
BERT .ohm file import