def upload_file(self, part_name, fmt, file_like):
        response = self._client.bulk_import_upload_file(self.name, part_name, fmt, file_like)
        self.update()
        return response
Upload a part to Bulk Import session, from an existing file on filesystem.
dataset/ETHPy150Open treasure-data/td-client-python/tdclient/bulk_import_model.py/BulkImport.upload_file