commit 3064dbf5df1021e85b507366a7ea448c8895efe7
author Ethan Furman <ethan@stoneleaf.us> Wed Sep 16 07:11:57 2020 -0700
committer GitHub <noreply@github.com> Wed Sep 16 07:11:57 2020 -0700
tree e1b846f6d233d1358de877d62a1888580dee1ed7
parent 0705ec8a149e27023b0420ae0366d16255f6c9f7

bpo-41517: do not allow Enums to be extended (#22271)

fix bug that let Enums be extended via multiple inheritance

Lib/test/test_enum.py

diff --git a/Lib/test/test_enum.py b/Lib/test/test_enum.py
index 865edf1..2fcd047 100644
--- a/Lib/test/test_enum.py
+++ b/Lib/test/test_enum.py
@@ -1009,6 +1009,9 @@
                 cyan = 4
                 magenta = 5
                 yellow = 6
+        with self.assertRaisesRegex(TypeError, "EvenMoreColor: cannot extend enumeration 'Color'"):
+            class EvenMoreColor(Color, IntEnum):
+                chartruese = 7
 
     def test_exclude_methods(self):
         class whatever(Enum):