[3.10] bpo-44559: [Enum] revert enum module to 3.9 (GH-27010)

* [Enum] revert enum module to 3.9
diff --git a/Lib/test/test_re.py b/Lib/test/test_re.py
index 4231e96..588cc79 100644
--- a/Lib/test/test_re.py
+++ b/Lib/test/test_re.py
@@ -2177,13 +2177,11 @@ def test_flags_repr(self):
                          "re.IGNORECASE|re.DOTALL|re.VERBOSE")
         self.assertEqual(repr(re.I|re.S|re.X|(1<<20)),
                          "re.IGNORECASE|re.DOTALL|re.VERBOSE|0x100000")
-        self.assertEqual(
-                repr(~re.I),
-                "re.ASCII|re.LOCALE|re.UNICODE|re.MULTILINE|re.DOTALL|re.VERBOSE|re.TEMPLATE|re.DEBUG")
+        self.assertEqual(repr(~re.I), "~re.IGNORECASE")
         self.assertEqual(repr(~(re.I|re.S|re.X)),
-                         "re.ASCII|re.LOCALE|re.UNICODE|re.MULTILINE|re.TEMPLATE|re.DEBUG")
+                         "~(re.IGNORECASE|re.DOTALL|re.VERBOSE)")
         self.assertEqual(repr(~(re.I|re.S|re.X|(1<<20))),
-                         "re.ASCII|re.LOCALE|re.UNICODE|re.MULTILINE|re.TEMPLATE|re.DEBUG|0xffe00")
+                         "~(re.IGNORECASE|re.DOTALL|re.VERBOSE|0x100000)")
 
 
 class ImplementationTest(unittest.TestCase):