From a83472f49b958c55befd82c871be26afbf500306 Mon Sep 17 00:00:00 2001
From: Stephen Morton <git@tungol.org>
Date: Tue, 12 Nov 2024 09:54:13 -0800
Subject: [PATCH] gh-126705: Make os.PathLike more like a protocol (#126706)

it can now be used as a base class in other protocols
---
 Lib/test/test_typing.py                                       | 4 ++++
 Lib/typing.py                                                 | 1 +
 .../Library/2024-11-11-14-52-21.gh-issue-126705.0W7jFW.rst    | 1 +
 3 files changed, 6 insertions(+)
 create mode 100644 Misc/NEWS.d/next/Library/2024-11-11-14-52-21.gh-issue-126705.0W7jFW.rst

diff --git a/Lib/test/test_typing.py b/Lib/test/test_typing.py
index 244ce1e5da9..aa42beca5f9 100644
--- a/Lib/test/test_typing.py
+++ b/Lib/test/test_typing.py
@@ -8,6 +8,7 @@ import gc
 import inspect
 import itertools
 import operator
+import os
 import pickle
 import re
 import sys
@@ -4252,6 +4253,9 @@ class ProtocolTests(BaseTestCase):
             class CustomProtocol(TestCase, Protocol):
                 pass
 
+        class CustomPathLikeProtocol(os.PathLike, Protocol):
+            pass
+
         class CustomContextManager(typing.ContextManager, Protocol):
             pass
 
diff --git a/Lib/typing.py b/Lib/typing.py
index 8e6381033fd..938e52922ae 100644
--- a/Lib/typing.py
+++ b/Lib/typing.py
@@ -1944,6 +1944,7 @@ _PROTO_ALLOWLIST = {
         'Reversible', 'Buffer',
     ],
     'contextlib': ['AbstractContextManager', 'AbstractAsyncContextManager'],
+    'os': ['PathLike'],
 }
 
 
diff --git a/Misc/NEWS.d/next/Library/2024-11-11-14-52-21.gh-issue-126705.0W7jFW.rst b/Misc/NEWS.d/next/Library/2024-11-11-14-52-21.gh-issue-126705.0W7jFW.rst
new file mode 100644
index 00000000000..f49c9c765d7
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2024-11-11-14-52-21.gh-issue-126705.0W7jFW.rst
@@ -0,0 +1 @@
+Allow :class:`os.PathLike` to be a base for Protocols.