check.py 文件源码

def handle(self, *app_labels, **options):
        include_deployment_checks = options['deploy']
        if options['list_tags']:
            self.stdout.write('\n'.join(sorted(registry.tags_available(include_deployment_checks))))
            return

        if app_labels:
            app_configs = [apps.get_app_config(app_label) for app_label in app_labels]
        else:
            app_configs = None

        tags = options['tags']
        if tags:
            try:
                invalid_tag = next(
                    tag for tag in tags if not checks.tag_exists(tag, include_deployment_checks)
                )
            except StopIteration:
                # no invalid tags
                pass
            else:
                raise CommandError('There is no system check with the "%s" tag.' % invalid_tag)

        self.check(
            app_configs=app_configs,
            tags=tags,
            display_num_errors=True,
            include_deployment_checks=include_deployment_checks,
            fail_level=getattr(checks, options['fail_level']),
        )