From 09bfba4785d031472c181f19aa335c8fcd034ad1 Mon Sep 17 00:00:00 2001
From: Itamar Ostricher <itamarost@gmail.com>
Date: Sun, 7 May 2023 14:13:03 -0700
Subject: [PATCH] gh-104271: Fix auto() fallback in case of mixed type Enum

---
 Lib/enum.py           | 2 +-
 Lib/test/test_enum.py | 5 ++++-
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/Lib/enum.py b/Lib/enum.py
index 6e497f7ef6a7de..bb71c84bd46373 100644
--- a/Lib/enum.py
+++ b/Lib/enum.py
@@ -1185,7 +1185,7 @@ def _generate_next_value_(name, start, count, last_values):
                     DeprecationWarning,
                     stacklevel=3,
                     )
-            for v in last_values:
+            for v in reversed(last_values):
                 try:
                     return v + 1
                 except TypeError:
diff --git a/Lib/test/test_enum.py b/Lib/test/test_enum.py
index fb7a016c9007f8..98010d18c0adb2 100644
--- a/Lib/test/test_enum.py
+++ b/Lib/test/test_enum.py
@@ -4254,11 +4254,14 @@ class Color(Enum):
                 red = 'red'
                 blue = 2
                 green = auto()
+                yellow = auto()
 
-        self.assertEqual(list(Color), [Color.red, Color.blue, Color.green])
+        self.assertEqual(list(Color),
+                         [Color.red, Color.blue, Color.green, Color.yellow])
         self.assertEqual(Color.red.value, 'red')
         self.assertEqual(Color.blue.value, 2)
         self.assertEqual(Color.green.value, 3)
+        self.assertEqual(Color.yellow.value, 4)
 
     @unittest.skipIf(
             python_version < (3, 13),