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gh-107431: Make multiprocessing.managers.{DictProxy,ListProxy} generic (#107433)

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Make `multiprocessing.managers.{DictProxy,ListProxy}` generic for type annotation use.  `ListProxy[str]` for example.

Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>
Co-authored-by: Gregory P. Smith <greg@krypto.org>
This commit is contained in:
Nikita Sobolev 2023-11-11 02:23:27 +03:00 committed by GitHub
parent 06c47a305d
commit ae8116cfa9
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GPG key ID: 4AEE18F83AFDEB23
3 changed files with 12 additions and 4 deletions
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8
Lib/multiprocessing/managers.py
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@ -1165,15 +1165,19 @@ def __imul__(self, value):
self._callmethod('__imul__', (value,))
return self
__class_getitem__ = classmethod(types.GenericAlias)
DictProxy = MakeProxyType('DictProxy', (
_BaseDictProxy = MakeProxyType('DictProxy', (
'__contains__', '__delitem__', '__getitem__', '__iter__', '__len__',
'__setitem__', 'clear', 'copy', 'get', 'items',
'keys', 'pop', 'popitem', 'setdefault', 'update', 'values'
))
DictProxy._method_to_typeid_ = {
_BaseDictProxy._method_to_typeid_ = {
'__iter__': 'Iterator',
}
class DictProxy(_BaseDictProxy):
__class_getitem__ = classmethod(types.GenericAlias)
ArrayProxy = MakeProxyType('ArrayProxy', (

6
Lib/test/test_genericalias.py
View file

@ -28,7 +28,7 @@
from itertools import chain
from http.cookies import Morsel
try:
from multiprocessing.managers import ValueProxy
from multiprocessing.managers import ValueProxy, DictProxy, ListProxy
from multiprocessing.pool import ApplyResult
from multiprocessing.queues import SimpleQueue as MPSimpleQueue
from multiprocessing.queues import Queue as MPQueue
@ -36,6 +36,8 @@
except ImportError:
# _multiprocessing module is optional
ValueProxy = None
DictProxy = None
ListProxy = None
ApplyResult = None
MPSimpleQueue = None
MPQueue = None
@ -134,7 +136,7 @@ class BaseTest(unittest.TestCase):
if ctypes is not None:
generic_types.extend((ctypes.Array, ctypes.LibraryLoader))
if ValueProxy is not None:
generic_types.extend((ValueProxy, ApplyResult,
generic_types.extend((ValueProxy, DictProxy, ListProxy, ApplyResult,
MPSimpleQueue, MPQueue, MPJoinableQueue))
def test_subscriptable(self):

2
Misc/NEWS.d/next/Library/2023-07-29-19-00-39.gh-issue-107431.1GzJ2p.rst Normal file
View file

@ -0,0 +1,2 @@
Make the ``DictProxy`` and ``ListProxy`` types in :mod:`multiprocessing.managers`
:ref:`Generic Alias Types<types-genericalias>` for ``[]`` use in typing contexts.