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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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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 @@ class ListProxy(BaseListProxy):
self._callmethod('__imul__', (value,)) self._callmethod('__imul__', (value,))
return self return self
__class_getitem__ = classmethod(types.GenericAlias)
DictProxy = MakeProxyType('DictProxy', (
_BaseDictProxy = MakeProxyType('DictProxy', (
'__contains__', '__delitem__', '__getitem__', '__iter__', '__len__', '__contains__', '__delitem__', '__getitem__', '__iter__', '__len__',
'__setitem__', 'clear', 'copy', 'get', 'items', '__setitem__', 'clear', 'copy', 'get', 'items',
'keys', 'pop', 'popitem', 'setdefault', 'update', 'values' 'keys', 'pop', 'popitem', 'setdefault', 'update', 'values'
)) ))
DictProxy._method_to_typeid_ = { _BaseDictProxy._method_to_typeid_ = {
'__iter__': 'Iterator', '__iter__': 'Iterator',
} }
class DictProxy(_BaseDictProxy):
__class_getitem__ = classmethod(types.GenericAlias)
ArrayProxy = MakeProxyType('ArrayProxy', ( ArrayProxy = MakeProxyType('ArrayProxy', (

6
Lib/test/test_genericalias.py
View file

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

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