make deprecation warning active for two releases

Author: ethanfurman

Doc/library/enum.rst

@@ -1222,8 +1222,8 @@ Private names are not converted to Enum members, but remain normal attributes.
 :class:`Enum` members are instances of their :class:`Enum` class, and are
 normally accessed as ``EnumClass.member``.  In Python versions ``3.5`` to
 ``3.9`` you could access members from other members -- this practice was
-discouraged, and in ``3.11`` :class:`Enum` will return to not allowing it,
-while in ``3.10`` it will raise a :exc:`DeprecationWarning`::
+discouraged, and in ``3.12`` :class:`Enum` will return to not allowing it,
+while in ``3.10`` and ``3.11`` it will raise a :exc:`DeprecationWarning`::
 
     >>> class FieldTypes(Enum):
     ...     name = 0
@@ -1232,7 +1232,7 @@ while in ``3.10`` it will raise a :exc:`DeprecationWarning`::
     ...
     >>> FieldTypes.value.size       # doctest: +SKIP
     DeprecationWarning: accessing one member from another is not supported,
-      and will be disabled in 3.11
+      and will be disabled in 3.12
     <FieldTypes.size: 2>
 
 .. versionchanged:: 3.5

Lib/enum.py

@@ -148,7 +148,7 @@ def __get__(self, instance, ownerclass=None):
                     import warnings
                     warnings.warn(
                             "accessing one member from another is not supported, "
-                            " and will be disabled in 3.11",
+                            " and will be disabled in 3.12",
                             DeprecationWarning,
                             stacklevel=2,
                             )

Lib/test/test_enum.py

@@ -2186,7 +2186,7 @@ class Private(Enum):
         self.assertEqual(Private._Private__major_, 'Hoolihan')
 
     @unittest.skipUnless(
-            sys.version_info[:2] == (3, 10),
+            sys.version_info[:2] < (3, 12),
             'member-member access now raises an exception',
             )
     def test_warning_for_member_from_member_access(self):
@@ -2198,7 +2198,7 @@ class Di(Enum):
         self.assertIs(Di.NO, nope)
 
     @unittest.skipUnless(
-            sys.version_info[:2] > (3, 10),
+            sys.version_info[:2] >= (3, 12),
             'member-member access currently issues a warning',
             )
     def test_exception_for_member_from_member_access(self):