def test_bucket_id_is_an_uuid_with_dashes(self):
        bucket = self.app.get(self.bucket_url, headers=self.headers)
        bucket_id = bucket.json['data']['id']
        self.assertIn('-', bucket_id)
        try:
            UUID(bucket_id)
        except ValueError:
            self.fail(bucket_id % 'bucket_id: %s is not a valid UUID.')
dataset/ETHPy150Open Kinto/kinto/kinto/plugins/default_bucket/test_plugin.py/DefaultBucketViewTest.test_bucket_id_is_an_uuid_with_dashes/swapped operands of `%`