From 271a77cb9928f0e9fd5f3fda297af47dcd96c0e0 Mon Sep 17 00:00:00 2001
From: Stephen Morton <git@tungol.org>
Date: Mon, 11 Nov 2024 14:52:54 -0800
Subject: [PATCH 1/3] Make os.PathLike more like a protocol

---
 Lib/os.py                                                      | 2 +-
 Lib/test/test_typing.py                                        | 3 +++
 Lib/typing.py                                                  | 1 +
 .../Library/2024-11-11-14-52-21.gh-issue-126705.0W7jFW.rst     | 1 +
 4 files changed, 6 insertions(+), 1 deletion(-)
 create mode 100644 Misc/NEWS.d/next/Library/2024-11-11-14-52-21.gh-issue-126705.0W7jFW.rst

diff --git a/Lib/os.py b/Lib/os.py
index 9c2258e6ccf5ba..86d16de7cf295d 100644
--- a/Lib/os.py
+++ b/Lib/os.py
@@ -1118,7 +1118,7 @@ def _fspath(path):
     fspath.__name__ = "fspath"
 
 
-class PathLike(abc.ABC):
+class PathLike(metaclass=abc.ABCMeta):
 
     """Abstract base class for implementing the file system path protocol."""
 
diff --git a/Lib/test/test_typing.py b/Lib/test/test_typing.py
index 2f1f9e86a0bce4..87ed3f2c67056c 100644
--- a/Lib/test/test_typing.py
+++ b/Lib/test/test_typing.py
@@ -4252,6 +4252,9 @@ def test_builtin_protocol_allowlist(self):
             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 c924c767042552..922a887599425c 100644
--- a/Lib/typing.py
+++ b/Lib/typing.py
@@ -1943,6 +1943,7 @@ def _allow_reckless_class_checks(depth=2):
         'Hashable', 'Sized', 'Container', 'Collection', '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 00000000000000..f49c9c765d778f
--- /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.

From 5dbce96b4fd61411a7f53c66bc2b7b02d8a7840a Mon Sep 17 00:00:00 2001
From: Stephen Morton <git@tungol.org>
Date: Mon, 11 Nov 2024 15:06:11 -0800
Subject: [PATCH 2/3] missed import in test file

---
 Lib/test/test_typing.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Lib/test/test_typing.py b/Lib/test/test_typing.py
index 87ed3f2c67056c..3c316ff3482373 100644
--- a/Lib/test/test_typing.py
+++ b/Lib/test/test_typing.py
@@ -8,6 +8,7 @@
 import inspect
 import itertools
 import operator
+import os
 import pickle
 import re
 import sys

From fc4d593b9479ba055c443bef939f459715dd78f8 Mon Sep 17 00:00:00 2001
From: Stephen Morton <git@tungol.org>
Date: Tue, 12 Nov 2024 09:22:57 -0800
Subject: [PATCH 3/3] don't change the base class

---
 Lib/os.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Lib/os.py b/Lib/os.py
index 86d16de7cf295d..9c2258e6ccf5ba 100644
--- a/Lib/os.py
+++ b/Lib/os.py
@@ -1118,7 +1118,7 @@ def _fspath(path):
     fspath.__name__ = "fspath"
 
 
-class PathLike(metaclass=abc.ABCMeta):
+class PathLike(abc.ABC):
 
     """Abstract base class for implementing the file system path protocol."""