__init__.py 文件源码

def get_or_create_processed_version(self):
        """
        Get or create the current processed version.

        Return a tuple (ProcessedDataVersion object, created), where
        created is a boolean specifying whether a version was created.
        """
        # get the latest raw data version
        try:
            latest_raw_version = RawDataVersion.objects.latest(
                'release_datetime',
            )
        except RawDataVersion.DoesNotExist:
            raise CommandError(
                'No raw CAL-ACCESS data loaded (run `python manage.py '
                'updatecalaccessrawdata`).'
            )

        # check if latest raw version update completed
        if latest_raw_version.update_stalled:
            msg_tmp = 'Update to raw version released at %s did not complete'
            raise CommandError(
                msg_tmp % latest_raw_version.release_datetime.ctime()
            )

        return ProcessedDataVersion.objects.get_or_create(
            raw_version=latest_raw_version,
        )