add blank line

Author: LamentXU123

Lib/test/test_uuid.py

@@ -1273,6 +1273,7 @@ def test_cli_uuid8(self):
         self.assertEqual(output, str(uuid_output))
         self.assertEqual(uuid_output.version, 8)
 
+
 class TestUUIDWithoutExtModule(BaseTestUUID, unittest.TestCase):
     uuid = py_uuid