From 37a7f1b0997466bb088df82f5fe35fe6d1cebb22 Mon Sep 17 00:00:00 2001
From: "Miss Islington (bot)"
 <31488909+miss-islington@users.noreply.github.com>
Date: Wed, 25 May 2022 10:50:24 -0700
Subject: [PATCH] [3.11] gh-93035: [Enum] Fix IntFlag crash when no single-bit
 members (GH-93076) (GH-93197)

`EnumType` attempts to create a custom docstring for each enum/flag, but that was failing with pathological flags that had no members (only multi-bit aliases).
(cherry picked from commit 08cfc3dabf0f81a4494cd0d697befc7d0dec77b7)

Co-authored-by: Tobin Yehle <tobinyehle@gmail.com>
---
 Lib/enum.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Lib/enum.py b/Lib/enum.py
index 31923d757f8..4a21226f019 100644
--- a/Lib/enum.py
+++ b/Lib/enum.py
@@ -538,7 +538,7 @@ def __new__(metacls, cls, bases, classdict, *, boundary=None, _simple=False, **k
         #
         # create a default docstring if one has not been provided
         if enum_class.__doc__ is None:
-            if not member_names:
+            if not member_names or not list(enum_class):
                 enum_class.__doc__ = classdict['__doc__'] = _dedent("""\
                         Create a collection of name/value pairs.
 
-- 
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