[3.13] gh-126417: Register multiprocessing proxy types to an appropriate collections...

Co-authored-by: Stephen Morton <github@tungol.org>

diff --git a/Lib/multiprocessing/managers.py b/Lib/multiprocessing/managers.py
index 76b915de74d94e7b338f4f2661906c0ce0831eaf..684ebaa9549b16cbb1cf1e9cb2ca04753eececc3 100644 (file)
--- a/Lib/multiprocessing/managers.py
+++ b/Lib/multiprocessing/managers.py
@@ -18,6 +18,7 @@ import sys
 import threading
 import signal
 import array
+import collections.abc
 import queue
 import time
 import types
@@ -1167,6 +1168,7 @@ class ListProxy(BaseListProxy):
 
     __class_getitem__ = classmethod(types.GenericAlias)
 
+collections.abc.MutableSequence.register(BaseListProxy)
 
 _BaseDictProxy = MakeProxyType('DictProxy', (
     '__contains__', '__delitem__', '__getitem__', '__iter__', '__len__',
@@ -1179,6 +1181,7 @@ _BaseDictProxy._method_to_typeid_ = {
 class DictProxy(_BaseDictProxy):
     __class_getitem__ = classmethod(types.GenericAlias)
 
+collections.abc.MutableMapping.register(_BaseDictProxy)
 
 ArrayProxy = MakeProxyType('ArrayProxy', (
     '__len__', '__getitem__', '__setitem__'

diff --git a/Lib/test/_test_multiprocessing.py b/Lib/test/_test_multiprocessing.py
index b0d53ed7d7b99323e58ec65bad8a4a43c6e6b922..64d707510ff4ca9aeccaa46e9386ba07519d695b 100644 (file)
--- a/Lib/test/_test_multiprocessing.py
+++ b/Lib/test/_test_multiprocessing.py
@@ -16,6 +16,7 @@ import errno
 import functools
 import signal
 import array
+import collections.abc
 import socket
 import random
 import logging
@@ -2331,6 +2332,10 @@ class _TestContainers(BaseTestCase):
         a.append('hello')
         self.assertEqual(f[0][:], [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 'hello'])
 
+    def test_list_isinstance(self):
+        a = self.list()
+        self.assertIsInstance(a, collections.abc.MutableSequence)
+
     def test_list_iter(self):
         a = self.list(list(range(10)))
         it = iter(a)
@@ -2371,6 +2376,10 @@ class _TestContainers(BaseTestCase):
         self.assertEqual(sorted(d.values()), [chr(i) for i in indices])
         self.assertEqual(sorted(d.items()), [(i, chr(i)) for i in indices])
 
+    def test_dict_isinstance(self):
+        a = self.dict()
+        self.assertIsInstance(a, collections.abc.MutableMapping)
+
     def test_dict_iter(self):
         d = self.dict()
         indices = list(range(65, 70))

diff --git a/Misc/ACKS b/Misc/ACKS
index 05cb6874759c31b97ab6a6d1f0d90e145ac8e10a..0d76e1a2137beee3dc284d170d44fe1e59d21f27 100644 (file)
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -1270,6 +1270,7 @@ Emily Morehouse
 Derek Morr
 James A Morrison
 Martin Morrison
+Stephen Morton
 Derek McTavish Mounce
 Alessandro Moura
 Pablo Mouzo

diff --git a/Misc/NEWS.d/next/Library/2024-11-04-16-40-02.gh-issue-126417.OWPqn0.rst b/Misc/NEWS.d/next/Library/2024-11-04-16-40-02.gh-issue-126417.OWPqn0.rst
new file mode 100644 (file)
index 0000000..c4a3663
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2024-11-04-16-40-02.gh-issue-126417.OWPqn0.rst
@@ -0,0 +1,3 @@
+Register the :class:`!multiprocessing.managers.DictProxy` and :class:`!multiprocessing.managers.ListProxy` types in
+:mod:`multiprocessing.managers` to :class:`collections.abc.MutableMapping` and
+:class:`collections.abc.MutableSequence`, respectively.