Revert "[Enum] EnumMeta.__prepare__ now accepts **kwds (#23917)"

This reverts commit 6ec0adefad.

Lib/enum.py

@@ -178,7 +178,7 @@ class EnumMeta(type):
     Metaclass for Enum
     """
     @classmethod
-    def __prepare__(metacls, cls, bases, **kwds):
+    def __prepare__(metacls, cls, bases):
         # check that previous enum members do not exist
         metacls._check_for_existing_members(cls, bases)
         # create the namespace dict

Lib/test/test_enum.py

@@ -2119,7 +2119,7 @@ class TestEnum(unittest.TestCase):
                 one = '1'
                 two = b'2', 'ascii', 9
                 
-    def test_init_subclass_calling(self):
+    def test_init_subclass(self):
         class MyEnum(Enum):
             def __init_subclass__(cls, **kwds):
                 super(MyEnum, cls).__init_subclass__(**kwds)
@@ -2155,16 +2155,6 @@ class TestEnum(unittest.TestCase):
         self.assertFalse(NeverEnum.__dict__.get('_test1', False))
         self.assertFalse(NeverEnum.__dict__.get('_test2', False))
 
-    def test_init_subclass_parameter(self):
-        class multiEnum(Enum):
-            def __init_subclass__(cls, multi):
-                for member in cls:
-                    member._as_parameter_ = multi * member.value
-        class E(multiEnum, multi=3):
-            A = 1
-            B = 2
-        self.assertEqual(E.A._as_parameter_, 3)
-        self.assertEqual(E.B._as_parameter_, 6)
 
     @unittest.skipUnless(
             sys.version_info[:2] == (3, 9),

Misc/NEWS.d/next/Library/2020-12-23-19-43-06.bpo-42727.WH3ODh.rst

@@ -1,2 +0,0 @@
-`EnumMeta.__prepare__` now accepts `**kwds` to properly support
-`__init_subclass__`