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-rw-r--r--Lib/multiprocessing/managers.py3
1 files changed, 3 insertions, 0 deletions
diff --git a/Lib/multiprocessing/managers.py b/Lib/multiprocessing/managers.py
index 1668220c09..9d490a1d8b 100644
--- a/Lib/multiprocessing/managers.py
+++ b/Lib/multiprocessing/managers.py
@@ -21,6 +21,7 @@ import signal
import array
import queue
import time
+import types
import os
from os import getpid
@@ -1129,6 +1130,8 @@ class ValueProxy(BaseProxy):
return self._callmethod('set', (value,))
value = property(get, set)
+ __class_getitem__ = classmethod(types.GenericAlias)
+
BaseListProxy = MakeProxyType('BaseListProxy', (
'__add__', '__contains__', '__delitem__', '__getitem__', '__len__',