[3.10] bpo-44559: [Enum] revert enum module to 3.9 (GH-27010)

* [Enum] revert enum module to 3.9
diff --git a/Lib/test/test_ast.py b/Lib/test/test_ast.py
index a44f8f5..3fac03d 100644
--- a/Lib/test/test_ast.py
+++ b/Lib/test/test_ast.py
@@ -1,7 +1,6 @@
 import ast
 import builtins
 import dis
-import enum
 import os
 import sys
 import types
@@ -699,35 +698,6 @@ def test_constant_as_name(self):
             with self.assertRaisesRegex(ValueError, f"Name node can't be used with '{constant}' constant"):
                 compile(expr, "<test>", "eval")
 
-    def test_precedence_enum(self):
-        class _Precedence(enum.IntEnum):
-            """Precedence table that originated from python grammar."""
-            TUPLE = enum.auto()
-            YIELD = enum.auto()           # 'yield', 'yield from'
-            TEST = enum.auto()            # 'if'-'else', 'lambda'
-            OR = enum.auto()              # 'or'
-            AND = enum.auto()             # 'and'
-            NOT = enum.auto()             # 'not'
-            CMP = enum.auto()             # '<', '>', '==', '>=', '<=', '!=',
-                                          # 'in', 'not in', 'is', 'is not'
-            EXPR = enum.auto()
-            BOR = EXPR                    # '|'
-            BXOR = enum.auto()            # '^'
-            BAND = enum.auto()            # '&'
-            SHIFT = enum.auto()           # '<<', '>>'
-            ARITH = enum.auto()           # '+', '-'
-            TERM = enum.auto()            # '*', '@', '/', '%', '//'
-            FACTOR = enum.auto()          # unary '+', '-', '~'
-            POWER = enum.auto()           # '**'
-            AWAIT = enum.auto()           # 'await'
-            ATOM = enum.auto()
-            def next(self):
-                try:
-                    return self.__class__(self + 1)
-                except ValueError:
-                    return self
-        enum._test_simple_enum(_Precedence, ast._Precedence)
-
 
 class ASTHelpers_Test(unittest.TestCase):
     maxDiff = None
diff --git a/Lib/test/test_enum.py b/Lib/test/test_enum.py
index 0267ff5..eb1266b 100644
--- a/Lib/test/test_enum.py
+++ b/Lib/test/test_enum.py
@@ -1,32 +1,16 @@
 import enum
-import doctest
 import inspect
-import os
 import pydoc
 import sys
 import unittest
 import threading
 from collections import OrderedDict
-from enum import Enum, IntEnum, StrEnum, EnumType, Flag, IntFlag, unique, auto
-from enum import STRICT, CONFORM, EJECT, KEEP, _simple_enum, _test_simple_enum
-from enum import verify, UNIQUE, CONTINUOUS, NAMED_FLAGS
+from enum import Enum, IntEnum, EnumMeta, Flag, IntFlag, unique, auto
 from io import StringIO
 from pickle import dumps, loads, PicklingError, HIGHEST_PROTOCOL
-from test import support
-from test.support import ALWAYS_EQ
-from test.support import threading_helper
+from test.support import ALWAYS_EQ, check__all__, threading_helper
 from datetime import timedelta
 
-python_version = sys.version_info[:2]
-
-def load_tests(loader, tests, ignore):
-    tests.addTests(doctest.DocTestSuite(enum))
-    if os.path.exists('Doc/library/enum.rst'):
-        tests.addTests(doctest.DocFileSuite(
-                '../../Doc/library/enum.rst',
-                optionflags=doctest.ELLIPSIS|doctest.NORMALIZE_WHITESPACE,
-                ))
-    return tests
 
 # for pickle tests
 try:
@@ -62,9 +46,14 @@ class FlagStooges(Flag):
     FlagStooges = exc
 
 # for pickle test and subclass tests
-class Name(StrEnum):
-    BDFL = 'Guido van Rossum'
-    FLUFL = 'Barry Warsaw'
+try:
+    class StrEnum(str, Enum):
+        'accepts only string values'
+    class Name(StrEnum):
+        BDFL = 'Guido van Rossum'
+        FLUFL = 'Barry Warsaw'
+except Exception as exc:
+    Name = exc
 
 try:
     Question = Enum('Question', 'who what when where why', module=__name__)
@@ -265,8 +254,11 @@ def test_enum(self):
             self.assertIn(e, Season)
             self.assertIs(type(e), Season)
             self.assertIsInstance(e, Season)
-            self.assertEqual(str(e), season)
-            self.assertEqual(repr(e), 'Season.{0}'.format(season))
+            self.assertEqual(str(e), 'Season.' + season)
+            self.assertEqual(
+                    repr(e),
+                    '<Season.{0}: {1}>'.format(season, i),
+                    )
 
     def test_value_name(self):
         Season = self.Season
@@ -355,38 +347,17 @@ class IntLogic(int, Enum):
         self.assertTrue(IntLogic.true)
         self.assertFalse(IntLogic.false)
 
-    @unittest.skipIf(
-            python_version >= (3, 12),
-            '__contains__ now returns True/False for all inputs',
-            )
-    def test_contains_er(self):
+    def test_contains(self):
         Season = self.Season
         self.assertIn(Season.AUTUMN, Season)
         with self.assertRaises(TypeError):
-            with self.assertWarns(DeprecationWarning):
-                3 in Season
+            3 in Season
         with self.assertRaises(TypeError):
-            with self.assertWarns(DeprecationWarning):
-                'AUTUMN' in Season
-        val = Season(3)
-        self.assertIn(val, Season)
-        #
-        class OtherEnum(Enum):
-            one = 1; two = 2
-        self.assertNotIn(OtherEnum.two, Season)
+            'AUTUMN' in Season
 
-    @unittest.skipIf(
-            python_version < (3, 12),
-            '__contains__ only works with enum memmbers before 3.12',
-            )
-    def test_contains_tf(self):
-        Season = self.Season
-        self.assertIn(Season.AUTUMN, Season)
-        self.assertTrue(3 in Season)
-        self.assertFalse('AUTUMN' in Season)
         val = Season(3)
         self.assertIn(val, Season)
-        #
+
         class OtherEnum(Enum):
             one = 1; two = 2
         self.assertNotIn(OtherEnum.two, Season)
@@ -458,13 +429,6 @@ def red(self):
                 green = 2
                 blue = 3
 
-    def test_reserved__sunder_(self):
-        with self.assertRaisesRegex(
-                ValueError,
-                '_sunder_ names, such as ._bad_., are reserved',
-            ):
-            class Bad(Enum):
-                _bad_ = 1
 
     def test_enum_with_value_name(self):
         class Huh(Enum):
@@ -509,7 +473,7 @@ class EnumWithFormatOverride(Enum):
             two = 2.0
             def __format__(self, spec):
                 return 'Format!!'
-        self.assertEqual(str(EnumWithFormatOverride.one), 'one')
+        self.assertEqual(str(EnumWithFormatOverride.one), 'EnumWithFormatOverride.one')
         self.assertEqual('{}'.format(EnumWithFormatOverride.one), 'Format!!')
 
     def test_str_and_format_override_enum(self):
@@ -549,42 +513,11 @@ class TestFloat(float, Enum):
             two = 2.0
             def __format__(self, spec):
                 return 'TestFloat success!'
-        self.assertEqual(str(TestFloat.one), 'one')
+        self.assertEqual(str(TestFloat.one), 'TestFloat.one')
         self.assertEqual('{}'.format(TestFloat.one), 'TestFloat success!')
 
-    @unittest.skipIf(
-            python_version < (3, 12),
-            'mixin-format is still using member.value',
-            )
-    def test_mixin_format_warning(self):
-        class Grades(int, Enum):
-            A = 5
-            B = 4
-            C = 3
-            D = 2
-            F = 0
-        self.assertEqual(f'{self.Grades.B}', 'B')
-
-    @unittest.skipIf(
-            python_version >= (3, 12),
-            'mixin-format now uses member instead of member.value',
-            )
-    def test_mixin_format_warning(self):
-        class Grades(int, Enum):
-            A = 5
-            B = 4
-            C = 3
-            D = 2
-            F = 0
-        with self.assertWarns(DeprecationWarning):
-            self.assertEqual(f'{Grades.B}', '4')
-
     def assertFormatIsValue(self, spec, member):
-        if python_version < (3, 12) and (not spec or spec in ('{}','{:}')):
-            with self.assertWarns(DeprecationWarning):
-                self.assertEqual(spec.format(member), spec.format(member.value))
-        else:
-            self.assertEqual(spec.format(member), spec.format(member.value))
+        self.assertEqual(spec.format(member), spec.format(member.value))
 
     def test_format_enum_date(self):
         Holiday = self.Holiday
@@ -610,12 +543,7 @@ def test_format_enum_float(self):
         self.assertFormatIsValue('{:f}', Konstants.TAU)
 
     def test_format_enum_int(self):
-        class Grades(int, Enum):
-            A = 5
-            B = 4
-            C = 3
-            D = 2
-            F = 0
+        Grades = self.Grades
         self.assertFormatIsValue('{}', Grades.C)
         self.assertFormatIsValue('{:}', Grades.C)
         self.assertFormatIsValue('{:20}', Grades.C)
@@ -665,15 +593,19 @@ class Test2Enum(MyStrEnum, MyMethodEnum):
 
     def test_inherited_data_type(self):
         class HexInt(int):
+            __qualname__ = 'HexInt'
             def __repr__(self):
                 return hex(self)
         class MyEnum(HexInt, enum.Enum):
+            __qualname__ = 'MyEnum'
             A = 1
             B = 2
             C = 3
-            def __repr__(self):
-                return '<%s.%s: %r>' % (self.__class__.__name__, self._name_, self._value_)
         self.assertEqual(repr(MyEnum.A), '<MyEnum.A: 0x1>')
+        globals()['HexInt'] = HexInt
+        globals()['MyEnum'] = MyEnum
+        test_pickle_dump_load(self.assertIs, MyEnum.A)
+        test_pickle_dump_load(self.assertIs, MyEnum)
         #
         class SillyInt(HexInt):
             __qualname__ = 'SillyInt'
@@ -689,22 +621,21 @@ class MyOtherEnum(SillyInt, enum.Enum):
         test_pickle_dump_load(self.assertIs, MyOtherEnum.E)
         test_pickle_dump_load(self.assertIs, MyOtherEnum)
         #
-        # This did not work in 3.9, but does now with pickling by name
-        class UnBrokenInt(int):
-            __qualname__ = 'UnBrokenInt'
+        class BrokenInt(int):
+            __qualname__ = 'BrokenInt'
             def __new__(cls, value):
                 return int.__new__(cls, value)
-        class MyUnBrokenEnum(UnBrokenInt, Enum):
-            __qualname__ = 'MyUnBrokenEnum'
+        class MyBrokenEnum(BrokenInt, Enum):
+            __qualname__ = 'MyBrokenEnum'
             G = 7
             H = 8
             I = 9
-        self.assertIs(MyUnBrokenEnum._member_type_, UnBrokenInt)
-        self.assertIs(MyUnBrokenEnum(7), MyUnBrokenEnum.G)
-        globals()['UnBrokenInt'] = UnBrokenInt
-        globals()['MyUnBrokenEnum'] = MyUnBrokenEnum
-        test_pickle_dump_load(self.assertIs, MyUnBrokenEnum.I)
-        test_pickle_dump_load(self.assertIs, MyUnBrokenEnum)
+        self.assertIs(MyBrokenEnum._member_type_, BrokenInt)
+        self.assertIs(MyBrokenEnum(7), MyBrokenEnum.G)
+        globals()['BrokenInt'] = BrokenInt
+        globals()['MyBrokenEnum'] = MyBrokenEnum
+        test_pickle_exception(self.assertRaises, TypeError, MyBrokenEnum.G)
+        test_pickle_exception(self.assertRaises, PicklingError, MyBrokenEnum)
 
     def test_too_many_data_types(self):
         with self.assertRaisesRegex(TypeError, 'too many data types'):
@@ -764,13 +695,14 @@ class phy(str, Enum):
             tau = 'Tau'
         self.assertTrue(phy.pi < phy.tau)
 
-    def test_strenum_inherited_methods(self):
+    def test_strenum_inherited(self):
+        class StrEnum(str, Enum):
+            pass
         class phy(StrEnum):
             pi = 'Pi'
             tau = 'Tau'
         self.assertTrue(phy.pi < phy.tau)
-        self.assertEqual(phy.pi.upper(), 'PI')
-        self.assertEqual(phy.tau.count('a'), 1)
+
 
     def test_intenum(self):
         class WeekDay(IntEnum):
@@ -877,7 +809,7 @@ def test_pickle_by_name(self):
         class ReplaceGlobalInt(IntEnum):
             ONE = 1
             TWO = 2
-        ReplaceGlobalInt.__reduce_ex__ = enum._reduce_ex_by_global_name
+        ReplaceGlobalInt.__reduce_ex__ = enum._reduce_ex_by_name
         for proto in range(HIGHEST_PROTOCOL):
             self.assertEqual(ReplaceGlobalInt.TWO.__reduce_ex__(proto), 'TWO')
 
@@ -1302,11 +1234,9 @@ def __name__(self):
                 return self._intname
             def __repr__(self):
                 # repr() is updated to include the name and type info
-                return "{}({!r}, {})".format(
-                        type(self).__name__,
-                        self.__name__,
-                        int.__repr__(self),
-                        )
+                return "{}({!r}, {})".format(type(self).__name__,
+                                             self.__name__,
+                                             int.__repr__(self))
             def __str__(self):
                 # str() is unchanged, even if it relies on the repr() fallback
                 base = int
@@ -1321,8 +1251,7 @@ def __add__(self, other):
                 if isinstance(self, NamedInt) and isinstance(other, NamedInt):
                     return NamedInt(
                         '({0} + {1})'.format(self.__name__, other.__name__),
-                        temp,
-                        )
+                        temp )
                 else:
                     return temp
 
@@ -1362,11 +1291,9 @@ def __name__(self):
                 return self._intname
             def __repr__(self):
                 # repr() is updated to include the name and type info
-                return "{}({!r}, {})".format(
-                        type(self).__name__,
-                        self.__name__,
-                        int.__repr__(self),
-                        )
+                return "{}({!r}, {})".format(type(self).__name__,
+                                             self.__name__,
+                                             int.__repr__(self))
             def __str__(self):
                 # str() is unchanged, even if it relies on the repr() fallback
                 base = int
@@ -1381,8 +1308,7 @@ def __add__(self, other):
                 if isinstance(self, NamedInt) and isinstance(other, NamedInt):
                     return NamedInt(
                         '({0} + {1})'.format(self.__name__, other.__name__),
-                        temp,
-                        )
+                        temp )
                 else:
                     return temp
 
@@ -1422,11 +1348,9 @@ def __name__(self):
                 return self._intname
             def __repr__(self):
                 # repr() is updated to include the name and type info
-                return "{}({!r}, {})".format(
-                        type(self).__name__,
-                        self.__name__,
-                        int.__repr__(self),
-                        )
+                return "{}({!r}, {})".format(type(self).__name__,
+                                             self.__name__,
+                                             int.__repr__(self))
             def __str__(self):
                 # str() is unchanged, even if it relies on the repr() fallback
                 base = int
@@ -1441,8 +1365,7 @@ def __add__(self, other):
                 if isinstance(self, NamedInt) and isinstance(other, NamedInt):
                     return NamedInt(
                         '({0} + {1})'.format(self.__name__, other.__name__),
-                        temp,
-                        )
+                        temp )
                 else:
                     return temp
 
@@ -1482,11 +1405,9 @@ def __name__(self):
                 return self._intname
             def __repr__(self):
                 # repr() is updated to include the name and type info
-                return "{}({!r}, {})".format(
-                        type(self).__name__,
-                        self.__name__,
-                        int.__repr__(self),
-                        )
+                return "{}({!r}, {})".format(type(self).__name__,
+                                             self.__name__,
+                                             int.__repr__(self))
             def __str__(self):
                 # str() is unchanged, even if it relies on the repr() fallback
                 base = int
@@ -1501,8 +1422,7 @@ def __add__(self, other):
                 if isinstance(self, NamedInt) and isinstance(other, NamedInt):
                     return NamedInt(
                         '({0} + {1})'.format(self.__name__, other.__name__),
-                        temp,
-                        )
+                        temp )
                 else:
                     return temp
 
@@ -1511,6 +1431,7 @@ class NEI(NamedInt, Enum):
             x = ('the-x', 1)
             y = ('the-y', 2)
 
+
         self.assertIs(NEI.__new__, Enum.__new__)
         self.assertEqual(repr(NEI.x + NEI.y), "NamedInt('(the-x + the-y)', 3)")
         globals()['NamedInt'] = NamedInt
@@ -1539,11 +1460,9 @@ def __name__(self):
                 return self._intname
             def __repr__(self):
                 # repr() is updated to include the name and type info
-                return "{}({!r}, {})".format(
-                        type(self).__name__,
-                        self.__name__,
-                        int.__repr__(self),
-                        )
+                return "{}({!r}, {})".format(type(self).__name__,
+                                             self.__name__,
+                                             int.__repr__(self))
             def __str__(self):
                 # str() is unchanged, even if it relies on the repr() fallback
                 base = int
@@ -1574,10 +1493,10 @@ class NEI(NamedInt, Enum):
         NI5 = NamedInt('test', 5)
         self.assertEqual(NI5, 5)
         self.assertEqual(NEI.y.value, 2)
-        test_pickle_dump_load(self.assertIs, NEI.y)
-        test_pickle_dump_load(self.assertIs, NEI)
+        test_pickle_exception(self.assertRaises, TypeError, NEI.x)
+        test_pickle_exception(self.assertRaises, PicklingError, NEI)
 
-    def test_subclasses_with_direct_pickle_support(self):
+    def test_subclasses_without_direct_pickle_support_using_name(self):
         class NamedInt(int):
             __qualname__ = 'NamedInt'
             def __new__(cls, *args):
@@ -1594,11 +1513,9 @@ def __name__(self):
                 return self._intname
             def __repr__(self):
                 # repr() is updated to include the name and type info
-                return "{}({!r}, {})".format(
-                        type(self).__name__,
-                        self.__name__,
-                        int.__repr__(self),
-                        )
+                return "{}({!r}, {})".format(type(self).__name__,
+                                             self.__name__,
+                                             int.__repr__(self))
             def __str__(self):
                 # str() is unchanged, even if it relies on the repr() fallback
                 base = int
@@ -1613,8 +1530,7 @@ def __add__(self, other):
                 if isinstance(self, NamedInt) and isinstance(other, NamedInt):
                     return NamedInt(
                         '({0} + {1})'.format(self.__name__, other.__name__),
-                        temp,
-                        )
+                        temp )
                 else:
                     return temp
 
@@ -1778,13 +1694,6 @@ def test(self):
         class Test(Base):
             test = 1
         self.assertEqual(Test.test.test, 'dynamic')
-        class Base2(Enum):
-            @enum.property
-            def flash(self):
-                return 'flashy dynamic'
-        class Test(Base2):
-            flash = 1
-        self.assertEqual(Test.flash.flash, 'flashy dynamic')
 
     def test_no_duplicates(self):
         class UniqueEnum(Enum):
@@ -2023,38 +1932,6 @@ def _missing_(cls, item):
         else:
             raise Exception('Exception not raised.')
 
-    def test_missing_exceptions_reset(self):
-        import weakref
-        #
-        class TestEnum(enum.Enum):
-            VAL1 = 'val1'
-            VAL2 = 'val2'
-        #
-        class Class1:
-            def __init__(self):
-                # Gracefully handle an exception of our own making
-                try:
-                    raise ValueError()
-                except ValueError:
-                    pass
-        #
-        class Class2:
-            def __init__(self):
-                # Gracefully handle an exception of Enum's making
-                try:
-                    TestEnum('invalid_value')
-                except ValueError:
-                    pass
-        # No strong refs here so these are free to die.
-        class_1_ref = weakref.ref(Class1())
-        class_2_ref = weakref.ref(Class2())
-        #
-        # The exception raised by Enum creates a reference loop and thus
-        # Class2 instances will stick around until the next gargage collection
-        # cycle, unlike Class1.
-        self.assertIs(class_1_ref(), None)
-        self.assertIs(class_2_ref(), None)
-
     def test_multiple_mixin(self):
         class MaxMixin:
             @classproperty
@@ -2081,7 +1958,7 @@ class Color(MaxMixin, Enum):
         self.assertEqual(Color.GREEN.value, 2)
         self.assertEqual(Color.BLUE.value, 3)
         self.assertEqual(Color.MAX, 3)
-        self.assertEqual(str(Color.BLUE), 'BLUE')
+        self.assertEqual(str(Color.BLUE), 'Color.BLUE')
         class Color(MaxMixin, StrMixin, Enum):
             RED = auto()
             GREEN = auto()
@@ -2152,6 +2029,13 @@ class ReformedColor(StrMixin, IntEnum, SomeEnum, AnotherEnum):
         self.assertTrue(issubclass(ReformedColor, int))
 
     def test_multiple_inherited_mixin(self):
+        class StrEnum(str, Enum):
+            def __new__(cls, *args, **kwargs):
+                for a in args:
+                    if not isinstance(a, str):
+                        raise TypeError("Enumeration '%s' (%s) is not"
+                                        " a string" % (a, type(a).__name__))
+                return str.__new__(cls, *args, **kwargs)
         @unique
         class Decision1(StrEnum):
             REVERT = "REVERT"
@@ -2191,50 +2075,6 @@ def __new__(cls, value):
                 return member
         self.assertEqual(Fee.TEST, 2)
 
-    def test_miltuple_mixin_with_common_data_type(self):
-        class CaseInsensitiveStrEnum(str, Enum):
-            @classmethod
-            def _missing_(cls, value):
-                for member in cls._member_map_.values():
-                    if member._value_.lower() == value.lower():
-                        return member
-                return super()._missing_(value)
-        #
-        class LenientStrEnum(str, Enum):
-            def __init__(self, *args):
-                self._valid = True
-            @classmethod
-            def _missing_(cls, value):
-                unknown = cls._member_type_.__new__(cls, value)
-                unknown._valid = False
-                unknown._name_ = value.upper()
-                unknown._value_ = value
-                cls._member_map_[value] = unknown
-                return unknown
-            @property
-            def valid(self):
-                return self._valid
-        #
-        class JobStatus(CaseInsensitiveStrEnum, LenientStrEnum):
-            ACTIVE = "active"
-            PENDING = "pending"
-            TERMINATED = "terminated"
-        #
-        JS = JobStatus
-        self.assertEqual(list(JobStatus), [JS.ACTIVE, JS.PENDING, JS.TERMINATED])
-        self.assertEqual(JS.ACTIVE, 'active')
-        self.assertEqual(JS.ACTIVE.value, 'active')
-        self.assertIs(JS('Active'), JS.ACTIVE)
-        self.assertTrue(JS.ACTIVE.valid)
-        missing = JS('missing')
-        self.assertEqual(list(JobStatus), [JS.ACTIVE, JS.PENDING, JS.TERMINATED])
-        self.assertEqual(JS.ACTIVE, 'active')
-        self.assertEqual(JS.ACTIVE.value, 'active')
-        self.assertIs(JS('Active'), JS.ACTIVE)
-        self.assertTrue(JS.ACTIVE.valid)
-        self.assertTrue(isinstance(missing, JS))
-        self.assertFalse(missing.valid)
-
     def test_empty_globals(self):
         # bpo-35717: sys._getframe(2).f_globals['__name__'] fails with KeyError
         # when using compile and exec because f_globals is empty
@@ -2244,220 +2084,8 @@ def test_empty_globals(self):
         local_ls = {}
         exec(code, global_ns, local_ls)
 
-    def test_strenum(self):
-        class GoodStrEnum(StrEnum):
-            one = '1'
-            two = '2'
-            three = b'3', 'ascii'
-            four = b'4', 'latin1', 'strict'
-        self.assertEqual(GoodStrEnum.one, '1')
-        self.assertEqual(str(GoodStrEnum.one), '1')
-        self.assertEqual('{}'.format(GoodStrEnum.one), '1')
-        self.assertEqual(GoodStrEnum.one, str(GoodStrEnum.one))
-        self.assertEqual(GoodStrEnum.one, '{}'.format(GoodStrEnum.one))
-        self.assertEqual(repr(GoodStrEnum.one), 'GoodStrEnum.one')
-        #
-        class DumbMixin:
-            def __str__(self):
-                return "don't do this"
-        class DumbStrEnum(DumbMixin, StrEnum):
-            five = '5'
-            six = '6'
-            seven = '7'
-        self.assertEqual(DumbStrEnum.seven, '7')
-        self.assertEqual(str(DumbStrEnum.seven), "don't do this")
-        #
-        class EnumMixin(Enum):
-            def hello(self):
-                print('hello from %s' % (self, ))
-        class HelloEnum(EnumMixin, StrEnum):
-            eight = '8'
-        self.assertEqual(HelloEnum.eight, '8')
-        self.assertEqual(HelloEnum.eight, str(HelloEnum.eight))
-        #
-        class GoodbyeMixin:
-            def goodbye(self):
-                print('%s wishes you a fond farewell')
-        class GoodbyeEnum(GoodbyeMixin, EnumMixin, StrEnum):
-            nine = '9'
-        self.assertEqual(GoodbyeEnum.nine, '9')
-        self.assertEqual(GoodbyeEnum.nine, str(GoodbyeEnum.nine))
-        #
-        with self.assertRaisesRegex(TypeError, '1 is not a string'):
-            class FirstFailedStrEnum(StrEnum):
-                one = 1
-                two = '2'
-        with self.assertRaisesRegex(TypeError, "2 is not a string"):
-            class SecondFailedStrEnum(StrEnum):
-                one = '1'
-                two = 2,
-                three = '3'
-        with self.assertRaisesRegex(TypeError, '2 is not a string'):
-            class ThirdFailedStrEnum(StrEnum):
-                one = '1'
-                two = 2
-        with self.assertRaisesRegex(TypeError, 'encoding must be a string, not %r' % (sys.getdefaultencoding, )):
-            class ThirdFailedStrEnum(StrEnum):
-                one = '1'
-                two = b'2', sys.getdefaultencoding
-        with self.assertRaisesRegex(TypeError, 'errors must be a string, not 9'):
-            class ThirdFailedStrEnum(StrEnum):
-                one = '1'
-                two = b'2', 'ascii', 9
-
-    @unittest.skipIf(
-            python_version >= (3, 12),
-            'mixin-format now uses member instead of member.value',
-            )
-    def test_custom_strenum_with_warning(self):
-        class CustomStrEnum(str, Enum):
-            pass
-        class OkayEnum(CustomStrEnum):
-            one = '1'
-            two = '2'
-            three = b'3', 'ascii'
-            four = b'4', 'latin1', 'strict'
-        self.assertEqual(OkayEnum.one, '1')
-        self.assertEqual(str(OkayEnum.one), 'one')
-        with self.assertWarns(DeprecationWarning):
-            self.assertEqual('{}'.format(OkayEnum.one), '1')
-        self.assertEqual(OkayEnum.one, '{}'.format(OkayEnum.one))
-        self.assertEqual(repr(OkayEnum.one), 'OkayEnum.one')
-        #
-        class DumbMixin:
-            def __str__(self):
-                return "don't do this"
-        class DumbStrEnum(DumbMixin, CustomStrEnum):
-            five = '5'
-            six = '6'
-            seven = '7'
-        self.assertEqual(DumbStrEnum.seven, '7')
-        self.assertEqual(str(DumbStrEnum.seven), "don't do this")
-        #
-        class EnumMixin(Enum):
-            def hello(self):
-                print('hello from %s' % (self, ))
-        class HelloEnum(EnumMixin, CustomStrEnum):
-            eight = '8'
-        self.assertEqual(HelloEnum.eight, '8')
-        self.assertEqual(str(HelloEnum.eight), 'eight')
-        #
-        class GoodbyeMixin:
-            def goodbye(self):
-                print('%s wishes you a fond farewell')
-        class GoodbyeEnum(GoodbyeMixin, EnumMixin, CustomStrEnum):
-            nine = '9'
-        self.assertEqual(GoodbyeEnum.nine, '9')
-        self.assertEqual(str(GoodbyeEnum.nine), 'nine')
-        #
-        class FirstFailedStrEnum(CustomStrEnum):
-            one = 1   # this will become '1'
-            two = '2'
-        class SecondFailedStrEnum(CustomStrEnum):
-            one = '1'
-            two = 2,  # this will become '2'
-            three = '3'
-        class ThirdFailedStrEnum(CustomStrEnum):
-            one = '1'
-            two = 2  # this will become '2'
-        with self.assertRaisesRegex(TypeError, '.encoding. must be str, not '):
-            class ThirdFailedStrEnum(CustomStrEnum):
-                one = '1'
-                two = b'2', sys.getdefaultencoding
-        with self.assertRaisesRegex(TypeError, '.errors. must be str, not '):
-            class ThirdFailedStrEnum(CustomStrEnum):
-                one = '1'
-                two = b'2', 'ascii', 9
-
-    @unittest.skipIf(
-            python_version < (3, 12),
-            'mixin-format currently uses member.value',
-            )
-    def test_custom_strenum(self):
-        class CustomStrEnum(str, Enum):
-            pass
-        class OkayEnum(CustomStrEnum):
-            one = '1'
-            two = '2'
-            three = b'3', 'ascii'
-            four = b'4', 'latin1', 'strict'
-        self.assertEqual(OkayEnum.one, '1')
-        self.assertEqual(str(OkayEnum.one), 'one')
-        self.assertEqual('{}'.format(OkayEnum.one), 'one')
-        self.assertEqual(repr(OkayEnum.one), 'OkayEnum.one')
-        #
-        class DumbMixin:
-            def __str__(self):
-                return "don't do this"
-        class DumbStrEnum(DumbMixin, CustomStrEnum):
-            five = '5'
-            six = '6'
-            seven = '7'
-        self.assertEqual(DumbStrEnum.seven, '7')
-        self.assertEqual(str(DumbStrEnum.seven), "don't do this")
-        #
-        class EnumMixin(Enum):
-            def hello(self):
-                print('hello from %s' % (self, ))
-        class HelloEnum(EnumMixin, CustomStrEnum):
-            eight = '8'
-        self.assertEqual(HelloEnum.eight, '8')
-        self.assertEqual(str(HelloEnum.eight), 'eight')
-        #
-        class GoodbyeMixin:
-            def goodbye(self):
-                print('%s wishes you a fond farewell')
-        class GoodbyeEnum(GoodbyeMixin, EnumMixin, CustomStrEnum):
-            nine = '9'
-        self.assertEqual(GoodbyeEnum.nine, '9')
-        self.assertEqual(str(GoodbyeEnum.nine), 'nine')
-        #
-        class FirstFailedStrEnum(CustomStrEnum):
-            one = 1   # this will become '1'
-            two = '2'
-        class SecondFailedStrEnum(CustomStrEnum):
-            one = '1'
-            two = 2,  # this will become '2'
-            three = '3'
-        class ThirdFailedStrEnum(CustomStrEnum):
-            one = '1'
-            two = 2  # this will become '2'
-        with self.assertRaisesRegex(TypeError, '.encoding. must be str, not '):
-            class ThirdFailedStrEnum(CustomStrEnum):
-                one = '1'
-                two = b'2', sys.getdefaultencoding
-        with self.assertRaisesRegex(TypeError, '.errors. must be str, not '):
-            class ThirdFailedStrEnum(CustomStrEnum):
-                one = '1'
-                two = b'2', 'ascii', 9
-
-    def test_missing_value_error(self):
-        with self.assertRaisesRegex(TypeError, "_value_ not set in __new__"):
-            class Combined(str, Enum):
-                #
-                def __new__(cls, value, sequence):
-                    enum = str.__new__(cls, value)
-                    if '(' in value:
-                        fis_name, segment = value.split('(', 1)
-                        segment = segment.strip(' )')
-                    else:
-                        fis_name = value
-                        segment = None
-                    enum.fis_name = fis_name
-                    enum.segment = segment
-                    enum.sequence = sequence
-                    return enum
-                #
-                def __repr__(self):
-                    return "<%s.%s>" % (self.__class__.__name__, self._name_)
-                #
-                key_type      = 'An$(1,2)', 0
-                company_id    = 'An$(3,2)', 1
-                code          = 'An$(5,1)', 2
-                description   = 'Bn$',      3
-
     @unittest.skipUnless(
-            python_version == (3, 9),
+            sys.version_info[:2] == (3, 9),
             'private variables are now normal attributes',
             )
     def test_warning_for_private_variables(self):
@@ -2472,70 +2100,6 @@ class Private(Enum):
         except ValueError:
             pass
 
-    def test_private_variable_is_normal_attribute(self):
-        class Private(Enum):
-            __corporal = 'Radar'
-            __major_ = 'Hoolihan'
-        self.assertEqual(Private._Private__corporal, 'Radar')
-        self.assertEqual(Private._Private__major_, 'Hoolihan')
-
-    @unittest.skipUnless(
-            python_version < (3, 12),
-            'member-member access now raises an exception',
-            )
-    def test_warning_for_member_from_member_access(self):
-        with self.assertWarns(DeprecationWarning):
-            class Di(Enum):
-                YES = 1
-                NO = 0
-            nope = Di.YES.NO
-        self.assertIs(Di.NO, nope)
-
-    @unittest.skipUnless(
-            python_version >= (3, 12),
-            'member-member access currently issues a warning',
-            )
-    def test_exception_for_member_from_member_access(self):
-        with self.assertRaisesRegex(AttributeError, "Di: no instance attribute .NO."):
-            class Di(Enum):
-                YES = 1
-                NO = 0
-            nope = Di.YES.NO
-
-    def test_strenum_auto(self):
-        class Strings(StrEnum):
-            ONE = auto()
-            TWO = auto()
-        self.assertEqual([Strings.ONE, Strings.TWO], ['one', 'two'])
-
-
-    def test_dynamic_members_with_static_methods(self):
-        #
-        foo_defines = {'FOO_CAT': 'aloof', 'BAR_DOG': 'friendly', 'FOO_HORSE': 'big'}
-        class Foo(Enum):
-            vars().update({
-                    k: v
-                    for k, v in foo_defines.items()
-                    if k.startswith('FOO_')
-                    })
-            def upper(self):
-                return self.value.upper()
-        self.assertEqual(list(Foo), [Foo.FOO_CAT, Foo.FOO_HORSE])
-        self.assertEqual(Foo.FOO_CAT.value, 'aloof')
-        self.assertEqual(Foo.FOO_HORSE.upper(), 'BIG')
-        #
-        with self.assertRaisesRegex(TypeError, "'FOO_CAT' already defined as: 'aloof'"):
-            class FooBar(Enum):
-                vars().update({
-                        k: v
-                        for k, v in foo_defines.items()
-                        if k.startswith('FOO_')
-                        },
-                        **{'FOO_CAT': 'small'},
-                        )
-                def upper(self):
-                    return self.value.upper()
-
 
 class TestOrder(unittest.TestCase):
 
@@ -2615,71 +2179,68 @@ class Open(Flag):
     class Color(Flag):
         BLACK = 0
         RED = 1
-        ROJO = 1
         GREEN = 2
         BLUE = 4
         PURPLE = RED|BLUE
-        WHITE = RED|GREEN|BLUE
-        BLANCO = RED|GREEN|BLUE
 
     def test_str(self):
         Perm = self.Perm
-        self.assertEqual(str(Perm.R), 'R')
-        self.assertEqual(str(Perm.W), 'W')
-        self.assertEqual(str(Perm.X), 'X')
-        self.assertEqual(str(Perm.R | Perm.W), 'R|W')
-        self.assertEqual(str(Perm.R | Perm.W | Perm.X), 'R|W|X')
-        self.assertEqual(str(Perm(0)), 'Perm(0)')
-        self.assertEqual(str(~Perm.R), 'W|X')
-        self.assertEqual(str(~Perm.W), 'R|X')
-        self.assertEqual(str(~Perm.X), 'R|W')
-        self.assertEqual(str(~(Perm.R | Perm.W)), 'X')
-        self.assertEqual(str(~(Perm.R | Perm.W | Perm.X)), 'Perm(0)')
-        self.assertEqual(str(Perm(~0)), 'R|W|X')
+        self.assertEqual(str(Perm.R), 'Perm.R')
+        self.assertEqual(str(Perm.W), 'Perm.W')
+        self.assertEqual(str(Perm.X), 'Perm.X')
+        self.assertEqual(str(Perm.R | Perm.W), 'Perm.R|W')
+        self.assertEqual(str(Perm.R | Perm.W | Perm.X), 'Perm.R|W|X')
+        self.assertEqual(str(Perm(0)), 'Perm.0')
+        self.assertEqual(str(~Perm.R), 'Perm.W|X')
+        self.assertEqual(str(~Perm.W), 'Perm.R|X')
+        self.assertEqual(str(~Perm.X), 'Perm.R|W')
+        self.assertEqual(str(~(Perm.R | Perm.W)), 'Perm.X')
+        self.assertEqual(str(~(Perm.R | Perm.W | Perm.X)), 'Perm.0')
+        self.assertEqual(str(Perm(~0)), 'Perm.R|W|X')
 
         Open = self.Open
-        self.assertEqual(str(Open.RO), 'RO')
-        self.assertEqual(str(Open.WO), 'WO')
-        self.assertEqual(str(Open.AC), 'AC')
-        self.assertEqual(str(Open.RO | Open.CE), 'CE')
-        self.assertEqual(str(Open.WO | Open.CE), 'WO|CE')
-        self.assertEqual(str(~Open.RO), 'WO|RW|CE')
-        self.assertEqual(str(~Open.WO), 'RW|CE')
-        self.assertEqual(str(~Open.AC), 'CE')
-        self.assertEqual(str(~(Open.RO | Open.CE)), 'AC')
-        self.assertEqual(str(~(Open.WO | Open.CE)), 'RW')
+        self.assertEqual(str(Open.RO), 'Open.RO')
+        self.assertEqual(str(Open.WO), 'Open.WO')
+        self.assertEqual(str(Open.AC), 'Open.AC')
+        self.assertEqual(str(Open.RO | Open.CE), 'Open.CE')
+        self.assertEqual(str(Open.WO | Open.CE), 'Open.CE|WO')
+        self.assertEqual(str(~Open.RO), 'Open.CE|AC|RW|WO')
+        self.assertEqual(str(~Open.WO), 'Open.CE|RW')
+        self.assertEqual(str(~Open.AC), 'Open.CE')
+        self.assertEqual(str(~(Open.RO | Open.CE)), 'Open.AC')
+        self.assertEqual(str(~(Open.WO | Open.CE)), 'Open.RW')
 
     def test_repr(self):
         Perm = self.Perm
-        self.assertEqual(repr(Perm.R), 'Perm.R')
-        self.assertEqual(repr(Perm.W), 'Perm.W')
-        self.assertEqual(repr(Perm.X), 'Perm.X')
-        self.assertEqual(repr(Perm.R | Perm.W), 'Perm.R|Perm.W')
-        self.assertEqual(repr(Perm.R | Perm.W | Perm.X), 'Perm.R|Perm.W|Perm.X')
-        self.assertEqual(repr(Perm(0)), '0x0')
-        self.assertEqual(repr(~Perm.R), 'Perm.W|Perm.X')
-        self.assertEqual(repr(~Perm.W), 'Perm.R|Perm.X')
-        self.assertEqual(repr(~Perm.X), 'Perm.R|Perm.W')
-        self.assertEqual(repr(~(Perm.R | Perm.W)), 'Perm.X')
-        self.assertEqual(repr(~(Perm.R | Perm.W | Perm.X)), '0x0')
-        self.assertEqual(repr(Perm(~0)), 'Perm.R|Perm.W|Perm.X')
+        self.assertEqual(repr(Perm.R), '<Perm.R: 4>')
+        self.assertEqual(repr(Perm.W), '<Perm.W: 2>')
+        self.assertEqual(repr(Perm.X), '<Perm.X: 1>')
+        self.assertEqual(repr(Perm.R | Perm.W), '<Perm.R|W: 6>')
+        self.assertEqual(repr(Perm.R | Perm.W | Perm.X), '<Perm.R|W|X: 7>')
+        self.assertEqual(repr(Perm(0)), '<Perm.0: 0>')
+        self.assertEqual(repr(~Perm.R), '<Perm.W|X: 3>')
+        self.assertEqual(repr(~Perm.W), '<Perm.R|X: 5>')
+        self.assertEqual(repr(~Perm.X), '<Perm.R|W: 6>')
+        self.assertEqual(repr(~(Perm.R | Perm.W)), '<Perm.X: 1>')
+        self.assertEqual(repr(~(Perm.R | Perm.W | Perm.X)), '<Perm.0: 0>')
+        self.assertEqual(repr(Perm(~0)), '<Perm.R|W|X: 7>')
 
         Open = self.Open
-        self.assertEqual(repr(Open.RO), 'Open.RO')
-        self.assertEqual(repr(Open.WO), 'Open.WO')
-        self.assertEqual(repr(Open.AC), 'Open.AC')
-        self.assertEqual(repr(Open.RO | Open.CE), 'Open.CE')
-        self.assertEqual(repr(Open.WO | Open.CE), 'Open.WO|Open.CE')
-        self.assertEqual(repr(~Open.RO), 'Open.WO|Open.RW|Open.CE')
-        self.assertEqual(repr(~Open.WO), 'Open.RW|Open.CE')
-        self.assertEqual(repr(~Open.AC), 'Open.CE')
-        self.assertEqual(repr(~(Open.RO | Open.CE)), 'Open.AC')
-        self.assertEqual(repr(~(Open.WO | Open.CE)), 'Open.RW')
+        self.assertEqual(repr(Open.RO), '<Open.RO: 0>')
+        self.assertEqual(repr(Open.WO), '<Open.WO: 1>')
+        self.assertEqual(repr(Open.AC), '<Open.AC: 3>')
+        self.assertEqual(repr(Open.RO | Open.CE), '<Open.CE: 524288>')
+        self.assertEqual(repr(Open.WO | Open.CE), '<Open.CE|WO: 524289>')
+        self.assertEqual(repr(~Open.RO), '<Open.CE|AC|RW|WO: 524291>')
+        self.assertEqual(repr(~Open.WO), '<Open.CE|RW: 524290>')
+        self.assertEqual(repr(~Open.AC), '<Open.CE: 524288>')
+        self.assertEqual(repr(~(Open.RO | Open.CE)), '<Open.AC: 3>')
+        self.assertEqual(repr(~(Open.WO | Open.CE)), '<Open.RW: 2>')
 
     def test_format(self):
         Perm = self.Perm
-        self.assertEqual(format(Perm.R, ''), 'R')
-        self.assertEqual(format(Perm.R | Perm.X, ''), 'R|X')
+        self.assertEqual(format(Perm.R, ''), 'Perm.R')
+        self.assertEqual(format(Perm.R | Perm.X, ''), 'Perm.R|X')
 
     def test_or(self):
         Perm = self.Perm
@@ -2748,49 +2309,6 @@ def test_bool(self):
         for f in Open:
             self.assertEqual(bool(f.value), bool(f))
 
-    def test_boundary(self):
-        self.assertIs(enum.Flag._boundary_, STRICT)
-        class Iron(Flag, boundary=STRICT):
-            ONE = 1
-            TWO = 2
-            EIGHT = 8
-        self.assertIs(Iron._boundary_, STRICT)
-        #
-        class Water(Flag, boundary=CONFORM):
-            ONE = 1
-            TWO = 2
-            EIGHT = 8
-        self.assertIs(Water._boundary_, CONFORM)
-        #
-        class Space(Flag, boundary=EJECT):
-            ONE = 1
-            TWO = 2
-            EIGHT = 8
-        self.assertIs(Space._boundary_, EJECT)
-        #
-        class Bizarre(Flag, boundary=KEEP):
-            b = 3
-            c = 4
-            d = 6
-        #
-        self.assertRaisesRegex(ValueError, 'invalid value: 7', Iron, 7)
-        #
-        self.assertIs(Water(7), Water.ONE|Water.TWO)
-        self.assertIs(Water(~9), Water.TWO)
-        #
-        self.assertEqual(Space(7), 7)
-        self.assertTrue(type(Space(7)) is int)
-        #
-        self.assertEqual(list(Bizarre), [Bizarre.c])
-        self.assertIs(Bizarre(3), Bizarre.b)
-        self.assertIs(Bizarre(6), Bizarre.d)
-
-    def test_iter(self):
-        Color = self.Color
-        Open = self.Open
-        self.assertEqual(list(Color), [Color.RED, Color.GREEN, Color.BLUE])
-        self.assertEqual(list(Open), [Open.WO, Open.RW, Open.CE])
-
     def test_programatic_function_string(self):
         Perm = Flag('Perm', 'R W X')
         lst = list(Perm)
@@ -2872,41 +2390,19 @@ def test_pickle(self):
         test_pickle_dump_load(self.assertIs, FlagStooges.CURLY|FlagStooges.MOE)
         test_pickle_dump_load(self.assertIs, FlagStooges)
 
-    @unittest.skipIf(
-            python_version >= (3, 12),
-            '__contains__ now returns True/False for all inputs',
-            )
-    def test_contains_er(self):
+    def test_contains(self):
         Open = self.Open
         Color = self.Color
         self.assertFalse(Color.BLACK in Open)
         self.assertFalse(Open.RO in Color)
         with self.assertRaises(TypeError):
-            with self.assertWarns(DeprecationWarning):
-                'BLACK' in Color
+            'BLACK' in Color
         with self.assertRaises(TypeError):
-            with self.assertWarns(DeprecationWarning):
-                'RO' in Open
+            'RO' in Open
         with self.assertRaises(TypeError):
-            with self.assertWarns(DeprecationWarning):
-                1 in Color
+            1 in Color
         with self.assertRaises(TypeError):
-            with self.assertWarns(DeprecationWarning):
-                1 in Open
-
-    @unittest.skipIf(
-            python_version < (3, 12),
-            '__contains__ only works with enum memmbers before 3.12',
-            )
-    def test_contains_tf(self):
-        Open = self.Open
-        Color = self.Color
-        self.assertFalse(Color.BLACK in Open)
-        self.assertFalse(Open.RO in Color)
-        self.assertFalse('BLACK' in Color)
-        self.assertFalse('RO' in Open)
-        self.assertTrue(1 in Color)
-        self.assertTrue(1 in Open)
+            1 in Open
 
     def test_member_contains(self):
         Perm = self.Perm
@@ -2928,48 +2424,6 @@ def test_member_contains(self):
         self.assertFalse(W in RX)
         self.assertFalse(X in RW)
 
-    def test_member_iter(self):
-        Color = self.Color
-        self.assertEqual(list(Color.BLACK), [])
-        self.assertEqual(list(Color.PURPLE), [Color.RED, Color.BLUE])
-        self.assertEqual(list(Color.BLUE), [Color.BLUE])
-        self.assertEqual(list(Color.GREEN), [Color.GREEN])
-        self.assertEqual(list(Color.WHITE), [Color.RED, Color.GREEN, Color.BLUE])
-        self.assertEqual(list(Color.WHITE), [Color.RED, Color.GREEN, Color.BLUE])
-
-    def test_member_length(self):
-        self.assertEqual(self.Color.__len__(self.Color.BLACK), 0)
-        self.assertEqual(self.Color.__len__(self.Color.GREEN), 1)
-        self.assertEqual(self.Color.__len__(self.Color.PURPLE), 2)
-        self.assertEqual(self.Color.__len__(self.Color.BLANCO), 3)
-
-    def test_number_reset_and_order_cleanup(self):
-        class Confused(Flag):
-            _order_ = 'ONE TWO FOUR DOS EIGHT SIXTEEN'
-            ONE = auto()
-            TWO = auto()
-            FOUR = auto()
-            DOS = 2
-            EIGHT = auto()
-            SIXTEEN = auto()
-        self.assertEqual(
-                list(Confused),
-                [Confused.ONE, Confused.TWO, Confused.FOUR, Confused.EIGHT, Confused.SIXTEEN])
-        self.assertIs(Confused.TWO, Confused.DOS)
-        self.assertEqual(Confused.DOS._value_, 2)
-        self.assertEqual(Confused.EIGHT._value_, 8)
-        self.assertEqual(Confused.SIXTEEN._value_, 16)
-
-    def test_aliases(self):
-        Color = self.Color
-        self.assertEqual(Color(1).name, 'RED')
-        self.assertEqual(Color['ROJO'].name, 'RED')
-        self.assertEqual(Color(7).name, 'WHITE')
-        self.assertEqual(Color['BLANCO'].name, 'WHITE')
-        self.assertIs(Color.BLANCO, Color.WHITE)
-        Open = self.Open
-        self.assertIs(Open['AC'], Open.AC)
-
     def test_auto_number(self):
         class Color(Flag):
             red = auto()
@@ -2987,6 +2441,20 @@ class Color(Flag):
                 red = 'not an int'
                 blue = auto()
 
+    def test_cascading_failure(self):
+        class Bizarre(Flag):
+            c = 3
+            d = 4
+            f = 6
+        # Bizarre.c | Bizarre.d
+        name = "TestFlag.test_cascading_failure.<locals>.Bizarre"
+        self.assertRaisesRegex(ValueError, "5 is not a valid " + name, Bizarre, 5)
+        self.assertRaisesRegex(ValueError, "5 is not a valid " + name, Bizarre, 5)
+        self.assertRaisesRegex(ValueError, "2 is not a valid " + name, Bizarre, 2)
+        self.assertRaisesRegex(ValueError, "2 is not a valid " + name, Bizarre, 2)
+        self.assertRaisesRegex(ValueError, "1 is not a valid " + name, Bizarre, 1)
+        self.assertRaisesRegex(ValueError, "1 is not a valid " + name, Bizarre, 1)
+
     def test_duplicate_auto(self):
         class Dupes(Enum):
             first = primero = auto()
@@ -2994,6 +2462,13 @@ class Dupes(Enum):
             third = auto()
         self.assertEqual([Dupes.first, Dupes.second, Dupes.third], list(Dupes))
 
+    def test_bizarre(self):
+        class Bizarre(Flag):
+            b = 3
+            c = 4
+            d = 6
+        self.assertEqual(repr(Bizarre(7)), '<Bizarre.d|c|b: 7>')
+
     def test_multiple_mixin(self):
         class AllMixin:
             @classproperty
@@ -3017,7 +2492,7 @@ class Color(AllMixin, Flag):
         self.assertEqual(Color.GREEN.value, 2)
         self.assertEqual(Color.BLUE.value, 4)
         self.assertEqual(Color.ALL.value, 7)
-        self.assertEqual(str(Color.BLUE), 'BLUE')
+        self.assertEqual(str(Color.BLUE), 'Color.BLUE')
         class Color(AllMixin, StrMixin, Flag):
             RED = auto()
             GREEN = auto()
@@ -3116,9 +2591,9 @@ class TestIntFlag(unittest.TestCase):
     """Tests of the IntFlags."""
 
     class Perm(IntFlag):
-        R = 1 << 2
-        W = 1 << 1
         X = 1 << 0
+        W = 1 << 1
+        R = 1 << 2
 
     class Open(IntFlag):
         RO = 0
@@ -3130,17 +2605,9 @@ class Open(IntFlag):
     class Color(IntFlag):
         BLACK = 0
         RED = 1
-        ROJO = 1
         GREEN = 2
         BLUE = 4
         PURPLE = RED|BLUE
-        WHITE = RED|GREEN|BLUE
-        BLANCO = RED|GREEN|BLUE
-
-    class Skip(IntFlag):
-        FIRST = 1
-        SECOND = 2
-        EIGHTH = 8
 
     def test_type(self):
         Perm = self.Perm
@@ -3160,83 +2627,74 @@ def test_type(self):
 
     def test_str(self):
         Perm = self.Perm
-        self.assertEqual(str(Perm.R), 'R')
-        self.assertEqual(str(Perm.W), 'W')
-        self.assertEqual(str(Perm.X), 'X')
-        self.assertEqual(str(Perm.R | Perm.W), 'R|W')
-        self.assertEqual(str(Perm.R | Perm.W | Perm.X), 'R|W|X')
-        self.assertEqual(str(Perm.R | 8), '12')
-        self.assertEqual(str(Perm(0)), 'Perm(0)')
-        self.assertEqual(str(Perm(8)), '8')
-        self.assertEqual(str(~Perm.R), 'W|X')
-        self.assertEqual(str(~Perm.W), 'R|X')
-        self.assertEqual(str(~Perm.X), 'R|W')
-        self.assertEqual(str(~(Perm.R | Perm.W)), 'X')
-        self.assertEqual(str(~(Perm.R | Perm.W | Perm.X)), 'Perm(0)')
-        self.assertEqual(str(~(Perm.R | 8)), '-13')
-        self.assertEqual(str(Perm(~0)), 'R|W|X')
-        self.assertEqual(str(Perm(~8)), '-9')
+        self.assertEqual(str(Perm.R), 'Perm.R')
+        self.assertEqual(str(Perm.W), 'Perm.W')
+        self.assertEqual(str(Perm.X), 'Perm.X')
+        self.assertEqual(str(Perm.R | Perm.W), 'Perm.R|W')
+        self.assertEqual(str(Perm.R | Perm.W | Perm.X), 'Perm.R|W|X')
+        self.assertEqual(str(Perm.R | 8), 'Perm.8|R')
+        self.assertEqual(str(Perm(0)), 'Perm.0')
+        self.assertEqual(str(Perm(8)), 'Perm.8')
+        self.assertEqual(str(~Perm.R), 'Perm.W|X')
+        self.assertEqual(str(~Perm.W), 'Perm.R|X')
+        self.assertEqual(str(~Perm.X), 'Perm.R|W')
+        self.assertEqual(str(~(Perm.R | Perm.W)), 'Perm.X')
+        self.assertEqual(str(~(Perm.R | Perm.W | Perm.X)), 'Perm.-8')
+        self.assertEqual(str(~(Perm.R | 8)), 'Perm.W|X')
+        self.assertEqual(str(Perm(~0)), 'Perm.R|W|X')
+        self.assertEqual(str(Perm(~8)), 'Perm.R|W|X')
 
         Open = self.Open
-        self.assertEqual(str(Open.RO), 'RO')
-        self.assertEqual(str(Open.WO), 'WO')
-        self.assertEqual(str(Open.AC), 'AC')
-        self.assertEqual(str(Open.RO | Open.CE), 'CE')
-        self.assertEqual(str(Open.WO | Open.CE), 'WO|CE')
-        self.assertEqual(str(Open(4)), '4')
-        self.assertEqual(str(~Open.RO), 'WO|RW|CE')
-        self.assertEqual(str(~Open.WO), 'RW|CE')
-        self.assertEqual(str(~Open.AC), 'CE')
-        self.assertEqual(str(~(Open.RO | Open.CE)), 'AC')
-        self.assertEqual(str(~(Open.WO | Open.CE)), 'RW')
-        self.assertEqual(str(Open(~4)), '-5')
+        self.assertEqual(str(Open.RO), 'Open.RO')
+        self.assertEqual(str(Open.WO), 'Open.WO')
+        self.assertEqual(str(Open.AC), 'Open.AC')
+        self.assertEqual(str(Open.RO | Open.CE), 'Open.CE')
+        self.assertEqual(str(Open.WO | Open.CE), 'Open.CE|WO')
+        self.assertEqual(str(Open(4)), 'Open.4')
+        self.assertEqual(str(~Open.RO), 'Open.CE|AC|RW|WO')
+        self.assertEqual(str(~Open.WO), 'Open.CE|RW')
+        self.assertEqual(str(~Open.AC), 'Open.CE')
+        self.assertEqual(str(~(Open.RO | Open.CE)), 'Open.AC|RW|WO')
+        self.assertEqual(str(~(Open.WO | Open.CE)), 'Open.RW')
+        self.assertEqual(str(Open(~4)), 'Open.CE|AC|RW|WO')
 
     def test_repr(self):
         Perm = self.Perm
-        self.assertEqual(repr(Perm.R), 'Perm.R')
-        self.assertEqual(repr(Perm.W), 'Perm.W')
-        self.assertEqual(repr(Perm.X), 'Perm.X')
-        self.assertEqual(repr(Perm.R | Perm.W), 'Perm.R|Perm.W')
-        self.assertEqual(repr(Perm.R | Perm.W | Perm.X), 'Perm.R|Perm.W|Perm.X')
-        self.assertEqual(repr(Perm.R | 8), '12')
-        self.assertEqual(repr(Perm(0)), '0x0')
-        self.assertEqual(repr(Perm(8)), '8')
-        self.assertEqual(repr(~Perm.R), 'Perm.W|Perm.X')
-        self.assertEqual(repr(~Perm.W), 'Perm.R|Perm.X')
-        self.assertEqual(repr(~Perm.X), 'Perm.R|Perm.W')
-        self.assertEqual(repr(~(Perm.R | Perm.W)), 'Perm.X')
-        self.assertEqual(repr(~(Perm.R | Perm.W | Perm.X)), '0x0')
-        self.assertEqual(repr(~(Perm.R | 8)), '-13')
-        self.assertEqual(repr(Perm(~0)), 'Perm.R|Perm.W|Perm.X')
-        self.assertEqual(repr(Perm(~8)), '-9')
+        self.assertEqual(repr(Perm.R), '<Perm.R: 4>')
+        self.assertEqual(repr(Perm.W), '<Perm.W: 2>')
+        self.assertEqual(repr(Perm.X), '<Perm.X: 1>')
+        self.assertEqual(repr(Perm.R | Perm.W), '<Perm.R|W: 6>')
+        self.assertEqual(repr(Perm.R | Perm.W | Perm.X), '<Perm.R|W|X: 7>')
+        self.assertEqual(repr(Perm.R | 8), '<Perm.8|R: 12>')
+        self.assertEqual(repr(Perm(0)), '<Perm.0: 0>')
+        self.assertEqual(repr(Perm(8)), '<Perm.8: 8>')
+        self.assertEqual(repr(~Perm.R), '<Perm.W|X: -5>')
+        self.assertEqual(repr(~Perm.W), '<Perm.R|X: -3>')
+        self.assertEqual(repr(~Perm.X), '<Perm.R|W: -2>')
+        self.assertEqual(repr(~(Perm.R | Perm.W)), '<Perm.X: -7>')
+        self.assertEqual(repr(~(Perm.R | Perm.W | Perm.X)), '<Perm.-8: -8>')
+        self.assertEqual(repr(~(Perm.R | 8)), '<Perm.W|X: -13>')
+        self.assertEqual(repr(Perm(~0)), '<Perm.R|W|X: -1>')
+        self.assertEqual(repr(Perm(~8)), '<Perm.R|W|X: -9>')
 
         Open = self.Open
-        self.assertEqual(repr(Open.RO), 'Open.RO')
-        self.assertEqual(repr(Open.WO), 'Open.WO')
-        self.assertEqual(repr(Open.AC), 'Open.AC')
-        self.assertEqual(repr(Open.RO | Open.CE), 'Open.CE')
-        self.assertEqual(repr(Open.WO | Open.CE), 'Open.WO|Open.CE')
-        self.assertEqual(repr(Open(4)), '4')
-        self.assertEqual(repr(~Open.RO), 'Open.WO|Open.RW|Open.CE')
-        self.assertEqual(repr(~Open.WO), 'Open.RW|Open.CE')
-        self.assertEqual(repr(~Open.AC), 'Open.CE')
-        self.assertEqual(repr(~(Open.RO | Open.CE)), 'Open.AC')
-        self.assertEqual(repr(~(Open.WO | Open.CE)), 'Open.RW')
-        self.assertEqual(repr(Open(~4)), '-5')
+        self.assertEqual(repr(Open.RO), '<Open.RO: 0>')
+        self.assertEqual(repr(Open.WO), '<Open.WO: 1>')
+        self.assertEqual(repr(Open.AC), '<Open.AC: 3>')
+        self.assertEqual(repr(Open.RO | Open.CE), '<Open.CE: 524288>')
+        self.assertEqual(repr(Open.WO | Open.CE), '<Open.CE|WO: 524289>')
+        self.assertEqual(repr(Open(4)), '<Open.4: 4>')
+        self.assertEqual(repr(~Open.RO), '<Open.CE|AC|RW|WO: -1>')
+        self.assertEqual(repr(~Open.WO), '<Open.CE|RW: -2>')
+        self.assertEqual(repr(~Open.AC), '<Open.CE: -4>')
+        self.assertEqual(repr(~(Open.RO | Open.CE)), '<Open.AC|RW|WO: -524289>')
+        self.assertEqual(repr(~(Open.WO | Open.CE)), '<Open.RW: -524290>')
+        self.assertEqual(repr(Open(~4)), '<Open.CE|AC|RW|WO: -5>')
 
     def test_format(self):
         Perm = self.Perm
         self.assertEqual(format(Perm.R, ''), '4')
         self.assertEqual(format(Perm.R | Perm.X, ''), '5')
-        #
-        class NewPerm(IntFlag):
-            R = 1 << 2
-            W = 1 << 1
-            X = 1 << 0
-            def __str__(self):
-                return self._name_
-        self.assertEqual(format(NewPerm.R, ''), 'R')
-        self.assertEqual(format(NewPerm.R | Perm.X, ''), 'R|X')
 
     def test_or(self):
         Perm = self.Perm
@@ -3314,7 +2772,8 @@ def test_invert(self):
         RWX = Perm.R | Perm.W | Perm.X
         values = list(Perm) + [RW, RX, WX, RWX, Perm(0)]
         for i in values:
-            self.assertEqual(~i, (~i).value)
+            self.assertEqual(~i, ~i.value)
+            self.assertEqual((~i).value, ~i.value)
             self.assertIs(type(~i), Perm)
             self.assertEqual(~~i, i)
         for i in Perm:
@@ -3323,50 +2782,6 @@ def test_invert(self):
         self.assertIs(Open.WO & ~Open.WO, Open.RO)
         self.assertIs((Open.WO|Open.CE) & ~Open.WO, Open.CE)
 
-    def test_boundary(self):
-        self.assertIs(enum.IntFlag._boundary_, EJECT)
-        class Iron(IntFlag, boundary=STRICT):
-            ONE = 1
-            TWO = 2
-            EIGHT = 8
-        self.assertIs(Iron._boundary_, STRICT)
-        #
-        class Water(IntFlag, boundary=CONFORM):
-            ONE = 1
-            TWO = 2
-            EIGHT = 8
-        self.assertIs(Water._boundary_, CONFORM)
-        #
-        class Space(IntFlag, boundary=EJECT):
-            ONE = 1
-            TWO = 2
-            EIGHT = 8
-        self.assertIs(Space._boundary_, EJECT)
-        #
-        #
-        class Bizarre(IntFlag, boundary=KEEP):
-            b = 3
-            c = 4
-            d = 6
-        #
-        self.assertRaisesRegex(ValueError, 'invalid value: 5', Iron, 5)
-        #
-        self.assertIs(Water(7), Water.ONE|Water.TWO)
-        self.assertIs(Water(~9), Water.TWO)
-        #
-        self.assertEqual(Space(7), 7)
-        self.assertTrue(type(Space(7)) is int)
-        #
-        self.assertEqual(list(Bizarre), [Bizarre.c])
-        self.assertIs(Bizarre(3), Bizarre.b)
-        self.assertIs(Bizarre(6), Bizarre.d)
-
-    def test_iter(self):
-        Color = self.Color
-        Open = self.Open
-        self.assertEqual(list(Color), [Color.RED, Color.GREEN, Color.BLUE])
-        self.assertEqual(list(Open), [Open.WO, Open.RW, Open.CE])
-
     def test_programatic_function_string(self):
         Perm = IntFlag('Perm', 'R W X')
         lst = list(Perm)
@@ -3468,11 +2883,7 @@ def test_programatic_function_from_empty_tuple(self):
         self.assertEqual(len(lst), len(Thing))
         self.assertEqual(len(Thing), 0, Thing)
 
-    @unittest.skipIf(
-            python_version >= (3, 12),
-            '__contains__ now returns True/False for all inputs',
-            )
-    def test_contains_er(self):
+    def test_contains(self):
         Open = self.Open
         Color = self.Color
         self.assertTrue(Color.GREEN in Color)
@@ -3480,33 +2891,13 @@ def test_contains_er(self):
         self.assertFalse(Color.GREEN in Open)
         self.assertFalse(Open.RW in Color)
         with self.assertRaises(TypeError):
-            with self.assertWarns(DeprecationWarning):
-                'GREEN' in Color
+            'GREEN' in Color
         with self.assertRaises(TypeError):
-            with self.assertWarns(DeprecationWarning):
-                'RW' in Open
+            'RW' in Open
         with self.assertRaises(TypeError):
-            with self.assertWarns(DeprecationWarning):
-                2 in Color
+            2 in Color
         with self.assertRaises(TypeError):
-            with self.assertWarns(DeprecationWarning):
-                2 in Open
-
-    @unittest.skipIf(
-            python_version < (3, 12),
-            '__contains__ only works with enum memmbers before 3.12',
-            )
-    def test_contains_tf(self):
-        Open = self.Open
-        Color = self.Color
-        self.assertTrue(Color.GREEN in Color)
-        self.assertTrue(Open.RW in Open)
-        self.assertTrue(Color.GREEN in Open)
-        self.assertTrue(Open.RW in Color)
-        self.assertFalse('GREEN' in Color)
-        self.assertFalse('RW' in Open)
-        self.assertTrue(2 in Color)
-        self.assertTrue(2 in Open)
+            2 in Open
 
     def test_member_contains(self):
         Perm = self.Perm
@@ -3530,30 +2921,6 @@ def test_member_contains(self):
         with self.assertRaises(TypeError):
             self.assertFalse('test' in RW)
 
-    def test_member_iter(self):
-        Color = self.Color
-        self.assertEqual(list(Color.BLACK), [])
-        self.assertEqual(list(Color.PURPLE), [Color.RED, Color.BLUE])
-        self.assertEqual(list(Color.BLUE), [Color.BLUE])
-        self.assertEqual(list(Color.GREEN), [Color.GREEN])
-        self.assertEqual(list(Color.WHITE), [Color.RED, Color.GREEN, Color.BLUE])
-
-    def test_member_length(self):
-        self.assertEqual(self.Color.__len__(self.Color.BLACK), 0)
-        self.assertEqual(self.Color.__len__(self.Color.GREEN), 1)
-        self.assertEqual(self.Color.__len__(self.Color.PURPLE), 2)
-        self.assertEqual(self.Color.__len__(self.Color.BLANCO), 3)
-
-    def test_aliases(self):
-        Color = self.Color
-        self.assertEqual(Color(1).name, 'RED')
-        self.assertEqual(Color['ROJO'].name, 'RED')
-        self.assertEqual(Color(7).name, 'WHITE')
-        self.assertEqual(Color['BLANCO'].name, 'WHITE')
-        self.assertIs(Color.BLANCO, Color.WHITE)
-        Open = self.Open
-        self.assertIs(Open['AC'], Open.AC)
-
     def test_bool(self):
         Perm = self.Perm
         for f in Perm:
@@ -3562,7 +2929,6 @@ def test_bool(self):
         for f in Open:
             self.assertEqual(bool(f.value), bool(f))
 
-
     def test_multiple_mixin(self):
         class AllMixin:
             @classproperty
@@ -3586,7 +2952,7 @@ class Color(AllMixin, IntFlag):
         self.assertEqual(Color.GREEN.value, 2)
         self.assertEqual(Color.BLUE.value, 4)
         self.assertEqual(Color.ALL.value, 7)
-        self.assertEqual(str(Color.BLUE), 'BLUE')
+        self.assertEqual(str(Color.BLUE), 'Color.BLUE')
         class Color(AllMixin, StrMixin, IntFlag):
             RED = auto()
             GREEN = auto()
@@ -3670,7 +3036,6 @@ class Clean(Enum):
             one = 1
             two = 'dos'
             tres = 4.0
-        #
         @unique
         class Cleaner(IntEnum):
             single = 1
@@ -3696,178 +3061,25 @@ class Dirtier(IntEnum):
                 turkey = 3
 
     def test_unique_with_name(self):
-        @verify(UNIQUE)
+        @unique
         class Silly(Enum):
             one = 1
             two = 'dos'
             name = 3
-        #
-        @verify(UNIQUE)
+        @unique
         class Sillier(IntEnum):
             single = 1
             name = 2
             triple = 3
             value = 4
 
-class TestVerify(unittest.TestCase):
 
-    def test_continuous(self):
-        @verify(CONTINUOUS)
-        class Auto(Enum):
-            FIRST = auto()
-            SECOND = auto()
-            THIRD = auto()
-            FORTH = auto()
-        #
-        @verify(CONTINUOUS)
-        class Manual(Enum):
-            FIRST = 3
-            SECOND = 4
-            THIRD = 5
-            FORTH = 6
-        #
-        with self.assertRaisesRegex(ValueError, 'invalid enum .Missing.: missing values 5, 6, 7, 8, 9, 10, 12'):
-            @verify(CONTINUOUS)
-            class Missing(Enum):
-                FIRST = 3
-                SECOND = 4
-                THIRD = 11
-                FORTH = 13
-        #
-        with self.assertRaisesRegex(ValueError, 'invalid flag .Incomplete.: missing values 32'):
-            @verify(CONTINUOUS)
-            class Incomplete(Flag):
-                FIRST = 4
-                SECOND = 8
-                THIRD = 16
-                FORTH = 64
-        #
-        with self.assertRaisesRegex(ValueError, 'invalid flag .StillIncomplete.: missing values 16'):
-            @verify(CONTINUOUS)
-            class StillIncomplete(Flag):
-                FIRST = 4
-                SECOND = 8
-                THIRD = 11
-                FORTH = 32
-
-
-    def test_composite(self):
-        class Bizarre(Flag):
-            b = 3
-            c = 4
-            d = 6
-        self.assertEqual(list(Bizarre), [Bizarre.c])
-        self.assertEqual(Bizarre.b.value, 3)
-        self.assertEqual(Bizarre.c.value, 4)
-        self.assertEqual(Bizarre.d.value, 6)
-        with self.assertRaisesRegex(
-                ValueError,
-                "invalid Flag 'Bizarre': aliases b and d are missing combined values of 0x3 .use enum.show_flag_values.value. for details.",
-            ):
-            @verify(NAMED_FLAGS)
-            class Bizarre(Flag):
-                b = 3
-                c = 4
-                d = 6
-        #
-        self.assertEqual(enum.show_flag_values(3), [1, 2])
-        class Bizarre(IntFlag):
-            b = 3
-            c = 4
-            d = 6
-        self.assertEqual(list(Bizarre), [Bizarre.c])
-        self.assertEqual(Bizarre.b.value, 3)
-        self.assertEqual(Bizarre.c.value, 4)
-        self.assertEqual(Bizarre.d.value, 6)
-        with self.assertRaisesRegex(
-                ValueError,
-                "invalid Flag 'Bizarre': alias d is missing value 0x2 .use enum.show_flag_values.value. for details.",
-            ):
-            @verify(NAMED_FLAGS)
-            class Bizarre(IntFlag):
-                c = 4
-                d = 6
-        self.assertEqual(enum.show_flag_values(2), [2])
-
-    def test_unique_clean(self):
-        @verify(UNIQUE)
-        class Clean(Enum):
-            one = 1
-            two = 'dos'
-            tres = 4.0
-        #
-        @verify(UNIQUE)
-        class Cleaner(IntEnum):
-            single = 1
-            double = 2
-            triple = 3
-
-    def test_unique_dirty(self):
-        with self.assertRaisesRegex(ValueError, 'tres.*one'):
-            @verify(UNIQUE)
-            class Dirty(Enum):
-                one = 1
-                two = 'dos'
-                tres = 1
-        with self.assertRaisesRegex(
-                ValueError,
-                'double.*single.*turkey.*triple',
-                ):
-            @verify(UNIQUE)
-            class Dirtier(IntEnum):
-                single = 1
-                double = 1
-                triple = 3
-                turkey = 3
-
-    def test_unique_with_name(self):
-        @verify(UNIQUE)
-        class Silly(Enum):
-            one = 1
-            two = 'dos'
-            name = 3
-        #
-        @verify(UNIQUE)
-        class Sillier(IntEnum):
-            single = 1
-            name = 2
-            triple = 3
-            value = 4
-
-class TestHelpers(unittest.TestCase):
-
-    sunder_names = '_bad_', '_good_', '_what_ho_'
-    dunder_names = '__mal__', '__bien__', '__que_que__'
-    private_names = '_MyEnum__private', '_MyEnum__still_private'
-    private_and_sunder_names = '_MyEnum__private_', '_MyEnum__also_private_'
-    random_names = 'okay', '_semi_private', '_weird__', '_MyEnum__'
-
-    def test_sunder(self):
-        for name in self.sunder_names + self.private_and_sunder_names:
-            self.assertTrue(enum._is_sunder(name), '%r is a not sunder name?' % name)
-        for name in self.dunder_names + self.private_names + self.random_names:
-            self.assertFalse(enum._is_sunder(name), '%r is a sunder name?' % name)
-
-    def test_dunder(self):
-        for name in self.dunder_names:
-            self.assertTrue(enum._is_dunder(name), '%r is a not dunder name?' % name)
-        for name in self.sunder_names + self.private_names + self.private_and_sunder_names + self.random_names:
-            self.assertFalse(enum._is_dunder(name), '%r is a dunder name?' % name)
-
-    def test_is_private(self):
-        for name in self.private_names + self.private_and_sunder_names:
-            self.assertTrue(enum._is_private('MyEnum', name), '%r is a not private name?')
-        for name in self.sunder_names + self.dunder_names + self.random_names:
-            self.assertFalse(enum._is_private('MyEnum', name), '%r is a private name?')
-
-class TestEnumTypeSubclassing(unittest.TestCase):
-    pass
 
 expected_help_output_with_docs = """\
 Help on class Color in module %s:
 
 class Color(enum.Enum)
- |  Color(value, names=None, *, module=None, qualname=None, type=None, start=1, boundary=None)
+ |  Color(value, names=None, *, module=None, qualname=None, type=None, start=1)
  |\x20\x20
  |  An enumeration.
  |\x20\x20
@@ -3878,11 +3090,11 @@ class Color(enum.Enum)
  |\x20\x20
  |  Data and other attributes defined here:
  |\x20\x20
- |  blue = Color.blue
+ |  blue = <Color.blue: 3>
  |\x20\x20
- |  green = Color.green
+ |  green = <Color.green: 2>
  |\x20\x20
- |  red = Color.red
+ |  red = <Color.red: 1>
  |\x20\x20
  |  ----------------------------------------------------------------------
  |  Data descriptors inherited from enum.Enum:
@@ -3894,7 +3106,7 @@ class Color(enum.Enum)
  |      The value of the Enum member.
  |\x20\x20
  |  ----------------------------------------------------------------------
- |  Readonly properties inherited from enum.EnumType:
+ |  Readonly properties inherited from enum.EnumMeta:
  |\x20\x20
  |  __members__
  |      Returns a mapping of member name->value.
@@ -3915,11 +3127,11 @@ class Color(enum.Enum)
  |\x20\x20
  |  Data and other attributes defined here:
  |\x20\x20
- |  blue = Color.blue
+ |  blue = <Color.blue: 3>
  |\x20\x20
- |  green = Color.green
+ |  green = <Color.green: 2>
  |\x20\x20
- |  red = Color.red
+ |  red = <Color.red: 1>
  |\x20\x20
  |  ----------------------------------------------------------------------
  |  Data descriptors inherited from enum.Enum:
@@ -3929,7 +3141,7 @@ class Color(enum.Enum)
  |  value
  |\x20\x20
  |  ----------------------------------------------------------------------
- |  Data descriptors inherited from enum.EnumType:
+ |  Data descriptors inherited from enum.EnumMeta:
  |\x20\x20
  |  __members__"""
 
@@ -3956,7 +3168,7 @@ def test_pydoc(self):
 
     def test_inspect_getmembers(self):
         values = dict((
-                ('__class__', EnumType),
+                ('__class__', EnumMeta),
                 ('__doc__', 'An enumeration.'),
                 ('__members__', self.Color.__members__),
                 ('__module__', __name__),
@@ -3967,7 +3179,7 @@ def test_inspect_getmembers(self):
                 ('value', Enum.__dict__['value']),
                 ))
         result = dict(inspect.getmembers(self.Color))
-        self.assertEqual(set(values.keys()), set(result.keys()))
+        self.assertEqual(values.keys(), result.keys())
         failed = False
         for k in values.keys():
             if result[k] != values[k]:
@@ -3983,11 +3195,11 @@ def test_inspect_classify_class_attrs(self):
         from inspect import Attribute
         values = [
                 Attribute(name='__class__', kind='data',
-                    defining_class=object, object=EnumType),
+                    defining_class=object, object=EnumMeta),
                 Attribute(name='__doc__', kind='data',
                     defining_class=self.Color, object='An enumeration.'),
                 Attribute(name='__members__', kind='property',
-                    defining_class=EnumType, object=EnumType.__members__),
+                    defining_class=EnumMeta, object=EnumMeta.__members__),
                 Attribute(name='__module__', kind='data',
                     defining_class=self.Color, object=__name__),
                 Attribute(name='blue', kind='data',
@@ -4004,10 +3216,6 @@ def test_inspect_classify_class_attrs(self):
         values.sort(key=lambda item: item.name)
         result = list(inspect.classify_class_attrs(self.Color))
         result.sort(key=lambda item: item.name)
-        self.assertEqual(
-                len(values), len(result),
-                "%s != %s" % ([a.name for a in values], [a.name for a in result])
-                )
         failed = False
         for v, r in zip(values, result):
             if r != v:
@@ -4016,45 +3224,10 @@ def test_inspect_classify_class_attrs(self):
         if failed:
             self.fail("result does not equal expected, see print above")
 
-    def test_test_simple_enum(self):
-        @_simple_enum(Enum)
-        class SimpleColor:
-            RED = 1
-            GREEN = 2
-            BLUE = 3
-        class CheckedColor(Enum):
-            RED = 1
-            GREEN = 2
-            BLUE = 3
-        self.assertTrue(_test_simple_enum(CheckedColor, SimpleColor) is None)
-        SimpleColor.GREEN._value_ = 9
-        self.assertRaisesRegex(
-                TypeError, "enum mismatch",
-                _test_simple_enum, CheckedColor, SimpleColor,
-                )
-        class CheckedMissing(IntFlag, boundary=KEEP):
-            SIXTY_FOUR = 64
-            ONE_TWENTY_EIGHT = 128
-            TWENTY_FORTY_EIGHT = 2048
-            ALL = 2048 + 128 + 64 + 12
-        CM = CheckedMissing
-        self.assertEqual(list(CheckedMissing), [CM.SIXTY_FOUR, CM.ONE_TWENTY_EIGHT, CM.TWENTY_FORTY_EIGHT])
-        #
-        @_simple_enum(IntFlag, boundary=KEEP)
-        class Missing:
-            SIXTY_FOUR = 64
-            ONE_TWENTY_EIGHT = 128
-            TWENTY_FORTY_EIGHT = 2048
-            ALL = 2048 + 128 + 64 + 12
-        M = Missing
-        self.assertEqual(list(CheckedMissing), [M.SIXTY_FOUR, M.ONE_TWENTY_EIGHT, M.TWENTY_FORTY_EIGHT])
-        #
-        _test_simple_enum(CheckedMissing, Missing)
-
 
 class MiscTestCase(unittest.TestCase):
     def test__all__(self):
-        support.check__all__(self, enum, not_exported={'bin', 'show_flag_values'})
+        check__all__(self, enum)
 
 
 # These are unordered here on purpose to ensure that declaration order
@@ -4066,22 +3239,7 @@ def test__all__(self):
 CONVERT_TEST_NAME_E = 5
 CONVERT_TEST_NAME_F = 5
 
-CONVERT_STRING_TEST_NAME_D = 5
-CONVERT_STRING_TEST_NAME_C = 5
-CONVERT_STRING_TEST_NAME_B = 5
-CONVERT_STRING_TEST_NAME_A = 5  # This one should sort first.
-CONVERT_STRING_TEST_NAME_E = 5
-CONVERT_STRING_TEST_NAME_F = 5
-
 class TestIntEnumConvert(unittest.TestCase):
-    def setUp(self):
-        # Reset the module-level test variables to their original integer
-        # values, otherwise the already created enum values get converted
-        # instead.
-        for suffix in ['A', 'B', 'C', 'D', 'E', 'F']:
-            globals()[f'CONVERT_TEST_NAME_{suffix}'] = 5
-            globals()[f'CONVERT_STRING_TEST_NAME_{suffix}'] = 5
-
     def test_convert_value_lookup_priority(self):
         test_type = enum.IntEnum._convert_(
                 'UnittestConvert',
@@ -4109,7 +3267,7 @@ def test_convert(self):
                           if name[0:2] not in ('CO', '__')],
                          [], msg='Names other than CONVERT_TEST_* found.')
 
-    @unittest.skipUnless(python_version == (3, 8),
+    @unittest.skipUnless(sys.version_info[:2] == (3, 8),
                          '_convert was deprecated in 3.8')
     def test_convert_warn(self):
         with self.assertWarns(DeprecationWarning):
@@ -4118,7 +3276,7 @@ def test_convert_warn(self):
                 ('test.test_enum', '__main__')[__name__=='__main__'],
                 filter=lambda x: x.startswith('CONVERT_TEST_'))
 
-    @unittest.skipUnless(python_version >= (3, 9),
+    @unittest.skipUnless(sys.version_info >= (3, 9),
                          '_convert was removed in 3.9')
     def test_convert_raise(self):
         with self.assertRaises(AttributeError):
@@ -4127,50 +3285,6 @@ def test_convert_raise(self):
                 ('test.test_enum', '__main__')[__name__=='__main__'],
                 filter=lambda x: x.startswith('CONVERT_TEST_'))
 
-    def test_convert_repr_and_str(self):
-        module = ('test.test_enum', '__main__')[__name__=='__main__']
-        test_type = enum.IntEnum._convert_(
-                'UnittestConvert',
-                module,
-                filter=lambda x: x.startswith('CONVERT_STRING_TEST_'))
-        self.assertEqual(repr(test_type.CONVERT_STRING_TEST_NAME_A), '%s.CONVERT_STRING_TEST_NAME_A' % module)
-        self.assertEqual(str(test_type.CONVERT_STRING_TEST_NAME_A), 'CONVERT_STRING_TEST_NAME_A')
-        self.assertEqual(format(test_type.CONVERT_STRING_TEST_NAME_A), '5')
-
-# global names for StrEnum._convert_ test
-CONVERT_STR_TEST_2 = 'goodbye'
-CONVERT_STR_TEST_1 = 'hello'
-
-class TestStrEnumConvert(unittest.TestCase):
-    def setUp(self):
-        global CONVERT_STR_TEST_1
-        global CONVERT_STR_TEST_2
-        CONVERT_STR_TEST_2 = 'goodbye'
-        CONVERT_STR_TEST_1 = 'hello'
-
-    def test_convert(self):
-        test_type = enum.StrEnum._convert_(
-                'UnittestConvert',
-                ('test.test_enum', '__main__')[__name__=='__main__'],
-                filter=lambda x: x.startswith('CONVERT_STR_'))
-        # Ensure that test_type has all of the desired names and values.
-        self.assertEqual(test_type.CONVERT_STR_TEST_1, 'hello')
-        self.assertEqual(test_type.CONVERT_STR_TEST_2, 'goodbye')
-        # Ensure that test_type only picked up names matching the filter.
-        self.assertEqual([name for name in dir(test_type)
-                          if name[0:2] not in ('CO', '__')],
-                         [], msg='Names other than CONVERT_STR_* found.')
-
-    def test_convert_repr_and_str(self):
-        module = ('test.test_enum', '__main__')[__name__=='__main__']
-        test_type = enum.StrEnum._convert_(
-                'UnittestConvert',
-                module,
-                filter=lambda x: x.startswith('CONVERT_STR_'))
-        self.assertEqual(repr(test_type.CONVERT_STR_TEST_1), '%s.CONVERT_STR_TEST_1' % module)
-        self.assertEqual(str(test_type.CONVERT_STR_TEST_2), 'goodbye')
-        self.assertEqual(format(test_type.CONVERT_STR_TEST_1), 'hello')
-
 
 if __name__ == '__main__':
     unittest.main()
diff --git a/Lib/test/test_httplib.py b/Lib/test/test_httplib.py
index 8265b8d..77152cf 100644
--- a/Lib/test/test_httplib.py
+++ b/Lib/test/test_httplib.py
@@ -1,4 +1,3 @@
-import enum
 import errno
 from http import client, HTTPStatus
 import io
@@ -525,150 +524,6 @@ def test_dir_with_added_behavior_on_status(self):
         # see issue40084
         self.assertTrue({'description', 'name', 'phrase', 'value'} <= set(dir(HTTPStatus(404))))
 
-    def test_simple_httpstatus(self):
-        class CheckedHTTPStatus(enum.IntEnum):
-            """HTTP status codes and reason phrases
-
-            Status codes from the following RFCs are all observed:
-
-                * RFC 7231: Hypertext Transfer Protocol (HTTP/1.1), obsoletes 2616
-                * RFC 6585: Additional HTTP Status Codes
-                * RFC 3229: Delta encoding in HTTP
-                * RFC 4918: HTTP Extensions for WebDAV, obsoletes 2518
-                * RFC 5842: Binding Extensions to WebDAV
-                * RFC 7238: Permanent Redirect
-                * RFC 2295: Transparent Content Negotiation in HTTP
-                * RFC 2774: An HTTP Extension Framework
-                * RFC 7725: An HTTP Status Code to Report Legal Obstacles
-                * RFC 7540: Hypertext Transfer Protocol Version 2 (HTTP/2)
-                * RFC 2324: Hyper Text Coffee Pot Control Protocol (HTCPCP/1.0)
-                * RFC 8297: An HTTP Status Code for Indicating Hints
-                * RFC 8470: Using Early Data in HTTP
-            """
-            def __new__(cls, value, phrase, description=''):
-                obj = int.__new__(cls, value)
-                obj._value_ = value
-
-                obj.phrase = phrase
-                obj.description = description
-                return obj
-            # informational
-            CONTINUE = 100, 'Continue', 'Request received, please continue'
-            SWITCHING_PROTOCOLS = (101, 'Switching Protocols',
-                    'Switching to new protocol; obey Upgrade header')
-            PROCESSING = 102, 'Processing'
-            EARLY_HINTS = 103, 'Early Hints'
-            # success
-            OK = 200, 'OK', 'Request fulfilled, document follows'
-            CREATED = 201, 'Created', 'Document created, URL follows'
-            ACCEPTED = (202, 'Accepted',
-                'Request accepted, processing continues off-line')
-            NON_AUTHORITATIVE_INFORMATION = (203,
-                'Non-Authoritative Information', 'Request fulfilled from cache')
-            NO_CONTENT = 204, 'No Content', 'Request fulfilled, nothing follows'
-            RESET_CONTENT = 205, 'Reset Content', 'Clear input form for further input'
-            PARTIAL_CONTENT = 206, 'Partial Content', 'Partial content follows'
-            MULTI_STATUS = 207, 'Multi-Status'
-            ALREADY_REPORTED = 208, 'Already Reported'
-            IM_USED = 226, 'IM Used'
-            # redirection
-            MULTIPLE_CHOICES = (300, 'Multiple Choices',
-                'Object has several resources -- see URI list')
-            MOVED_PERMANENTLY = (301, 'Moved Permanently',
-                'Object moved permanently -- see URI list')
-            FOUND = 302, 'Found', 'Object moved temporarily -- see URI list'
-            SEE_OTHER = 303, 'See Other', 'Object moved -- see Method and URL list'
-            NOT_MODIFIED = (304, 'Not Modified',
-                'Document has not changed since given time')
-            USE_PROXY = (305, 'Use Proxy',
-                'You must use proxy specified in Location to access this resource')
-            TEMPORARY_REDIRECT = (307, 'Temporary Redirect',
-                'Object moved temporarily -- see URI list')
-            PERMANENT_REDIRECT = (308, 'Permanent Redirect',
-                'Object moved permanently -- see URI list')
-            # client error
-            BAD_REQUEST = (400, 'Bad Request',
-                'Bad request syntax or unsupported method')
-            UNAUTHORIZED = (401, 'Unauthorized',
-                'No permission -- see authorization schemes')
-            PAYMENT_REQUIRED = (402, 'Payment Required',
-                'No payment -- see charging schemes')
-            FORBIDDEN = (403, 'Forbidden',
-                'Request forbidden -- authorization will not help')
-            NOT_FOUND = (404, 'Not Found',
-                'Nothing matches the given URI')
-            METHOD_NOT_ALLOWED = (405, 'Method Not Allowed',
-                'Specified method is invalid for this resource')
-            NOT_ACCEPTABLE = (406, 'Not Acceptable',
-                'URI not available in preferred format')
-            PROXY_AUTHENTICATION_REQUIRED = (407,
-                'Proxy Authentication Required',
-                'You must authenticate with this proxy before proceeding')
-            REQUEST_TIMEOUT = (408, 'Request Timeout',
-                'Request timed out; try again later')
-            CONFLICT = 409, 'Conflict', 'Request conflict'
-            GONE = (410, 'Gone',
-                'URI no longer exists and has been permanently removed')
-            LENGTH_REQUIRED = (411, 'Length Required',
-                'Client must specify Content-Length')
-            PRECONDITION_FAILED = (412, 'Precondition Failed',
-                'Precondition in headers is false')
-            REQUEST_ENTITY_TOO_LARGE = (413, 'Request Entity Too Large',
-                'Entity is too large')
-            REQUEST_URI_TOO_LONG = (414, 'Request-URI Too Long',
-                'URI is too long')
-            UNSUPPORTED_MEDIA_TYPE = (415, 'Unsupported Media Type',
-                'Entity body in unsupported format')
-            REQUESTED_RANGE_NOT_SATISFIABLE = (416,
-                'Requested Range Not Satisfiable',
-                'Cannot satisfy request range')
-            EXPECTATION_FAILED = (417, 'Expectation Failed',
-                'Expect condition could not be satisfied')
-            IM_A_TEAPOT = (418, 'I\'m a Teapot',
-                'Server refuses to brew coffee because it is a teapot.')
-            MISDIRECTED_REQUEST = (421, 'Misdirected Request',
-                'Server is not able to produce a response')
-            UNPROCESSABLE_ENTITY = 422, 'Unprocessable Entity'
-            LOCKED = 423, 'Locked'
-            FAILED_DEPENDENCY = 424, 'Failed Dependency'
-            TOO_EARLY = 425, 'Too Early'
-            UPGRADE_REQUIRED = 426, 'Upgrade Required'
-            PRECONDITION_REQUIRED = (428, 'Precondition Required',
-                'The origin server requires the request to be conditional')
-            TOO_MANY_REQUESTS = (429, 'Too Many Requests',
-                'The user has sent too many requests in '
-                'a given amount of time ("rate limiting")')
-            REQUEST_HEADER_FIELDS_TOO_LARGE = (431,
-                'Request Header Fields Too Large',
-                'The server is unwilling to process the request because its header '
-                'fields are too large')
-            UNAVAILABLE_FOR_LEGAL_REASONS = (451,
-                'Unavailable For Legal Reasons',
-                'The server is denying access to the '
-                'resource as a consequence of a legal demand')
-            # server errors
-            INTERNAL_SERVER_ERROR = (500, 'Internal Server Error',
-                'Server got itself in trouble')
-            NOT_IMPLEMENTED = (501, 'Not Implemented',
-                'Server does not support this operation')
-            BAD_GATEWAY = (502, 'Bad Gateway',
-                'Invalid responses from another server/proxy')
-            SERVICE_UNAVAILABLE = (503, 'Service Unavailable',
-                'The server cannot process the request due to a high load')
-            GATEWAY_TIMEOUT = (504, 'Gateway Timeout',
-                'The gateway server did not receive a timely response')
-            HTTP_VERSION_NOT_SUPPORTED = (505, 'HTTP Version Not Supported',
-                'Cannot fulfill request')
-            VARIANT_ALSO_NEGOTIATES = 506, 'Variant Also Negotiates'
-            INSUFFICIENT_STORAGE = 507, 'Insufficient Storage'
-            LOOP_DETECTED = 508, 'Loop Detected'
-            NOT_EXTENDED = 510, 'Not Extended'
-            NETWORK_AUTHENTICATION_REQUIRED = (511,
-                'Network Authentication Required',
-                'The client needs to authenticate to gain network access')
-        enum._test_simple_enum(CheckedHTTPStatus, HTTPStatus)
-
-
     def test_status_lines(self):
         # Test HTTP status lines
 
diff --git a/Lib/test/test_pstats.py b/Lib/test/test_pstats.py
index acc2fa5..c9a5fd5 100644
--- a/Lib/test/test_pstats.py
+++ b/Lib/test/test_pstats.py
@@ -3,7 +3,6 @@
 from test import support
 from io import StringIO
 from pstats import SortKey
-from enum import StrEnum, _test_simple_enum
 
 import pstats
 import cProfile
@@ -62,32 +61,6 @@ def test_sort_stats_partial(self):
             self.assertEqual(self.stats.sort_type,
                              self.stats.sort_arg_dict_default[sortkey][-1])
 
-    def test_sort_stats_enum(self):
-        for member in SortKey:
-            self.stats.sort_stats(member)
-            self.assertEqual(
-                    self.stats.sort_type,
-                    self.stats.sort_arg_dict_default[member.value][-1])
-        class CheckedSortKey(StrEnum):
-            CALLS = 'calls', 'ncalls'
-            CUMULATIVE = 'cumulative', 'cumtime'
-            FILENAME = 'filename', 'module'
-            LINE = 'line'
-            NAME = 'name'
-            NFL = 'nfl'
-            PCALLS = 'pcalls'
-            STDNAME = 'stdname'
-            TIME = 'time', 'tottime'
-            def __new__(cls, *values):
-                value = values[0]
-                obj = str.__new__(cls, value)
-                obj._value_ = value
-                for other_value in values[1:]:
-                    cls._value2member_map_[other_value] = obj
-                obj._all_values = values
-                return obj
-        _test_simple_enum(CheckedSortKey, SortKey)
-
     def test_sort_starts_mix(self):
         self.assertRaises(TypeError, self.stats.sort_stats,
                           'calls',
diff --git a/Lib/test/test_pydoc.py b/Lib/test/test_pydoc.py
index c862a80..0afa3e6 100644
--- a/Lib/test/test_pydoc.py
+++ b/Lib/test/test_pydoc.py
@@ -453,7 +453,7 @@ class BinaryInteger(enum.IntEnum):
             zero = 0
             one = 1
         doc = pydoc.render_doc(BinaryInteger)
-        self.assertIn('BinaryInteger.zero', doc)
+        self.assertIn('<BinaryInteger.zero: 0>', doc)
 
     def test_mixed_case_module_names_are_lower_cased(self):
         # issue16484
diff --git a/Lib/test/test_re.py b/Lib/test/test_re.py
index 4231e96..588cc79 100644
--- a/Lib/test/test_re.py
+++ b/Lib/test/test_re.py
@@ -2177,13 +2177,11 @@ def test_flags_repr(self):
                          "re.IGNORECASE|re.DOTALL|re.VERBOSE")
         self.assertEqual(repr(re.I|re.S|re.X|(1<<20)),
                          "re.IGNORECASE|re.DOTALL|re.VERBOSE|0x100000")
-        self.assertEqual(
-                repr(~re.I),
-                "re.ASCII|re.LOCALE|re.UNICODE|re.MULTILINE|re.DOTALL|re.VERBOSE|re.TEMPLATE|re.DEBUG")
+        self.assertEqual(repr(~re.I), "~re.IGNORECASE")
         self.assertEqual(repr(~(re.I|re.S|re.X)),
-                         "re.ASCII|re.LOCALE|re.UNICODE|re.MULTILINE|re.TEMPLATE|re.DEBUG")
+                         "~(re.IGNORECASE|re.DOTALL|re.VERBOSE)")
         self.assertEqual(repr(~(re.I|re.S|re.X|(1<<20))),
-                         "re.ASCII|re.LOCALE|re.UNICODE|re.MULTILINE|re.TEMPLATE|re.DEBUG|0xffe00")
+                         "~(re.IGNORECASE|re.DOTALL|re.VERBOSE|0x100000)")
 
 
 class ImplementationTest(unittest.TestCase):
diff --git a/Lib/test/test_signal.py b/Lib/test/test_signal.py
index daecf19..2144d61 100644
--- a/Lib/test/test_signal.py
+++ b/Lib/test/test_signal.py
@@ -1,4 +1,3 @@
-import enum
 import errno
 import os
 import random
@@ -34,32 +33,6 @@ def test_enums(self):
                 self.assertIsInstance(sig, signal.Signals)
                 self.assertEqual(sys.platform, "win32")
 
-        CheckedSignals = enum._old_convert_(
-                enum.IntEnum, 'Signals', 'signal',
-                lambda name:
-                    name.isupper()
-                    and (name.startswith('SIG') and not name.startswith('SIG_'))
-                    or name.startswith('CTRL_'),
-                source=signal,
-                )
-        enum._test_simple_enum(CheckedSignals, signal.Signals)
-
-        CheckedHandlers = enum._old_convert_(
-                enum.IntEnum, 'Handlers', 'signal',
-                lambda name: name in ('SIG_DFL', 'SIG_IGN'),
-                source=signal,
-                )
-        enum._test_simple_enum(CheckedHandlers, signal.Handlers)
-
-        Sigmasks = getattr(signal, 'Sigmasks', None)
-        if Sigmasks is not None:
-            CheckedSigmasks = enum._old_convert_(
-                    enum.IntEnum, 'Sigmasks', 'signal',
-                    lambda name: name in ('SIG_BLOCK', 'SIG_UNBLOCK', 'SIG_SETMASK'),
-                    source=signal,
-                    )
-            enum._test_simple_enum(CheckedSigmasks, Sigmasks)
-
 
 @unittest.skipIf(sys.platform == "win32", "Not valid on Windows")
 class PosixTests(unittest.TestCase):
@@ -899,7 +872,7 @@ def handler(signum, frame):
 
         %s
 
-        blocked = %r
+        blocked = %s
         signum = signal.SIGALRM
 
         # child: block and wait the signal
diff --git a/Lib/test/test_socket.py b/Lib/test/test_socket.py
index 828d1f3..a59afd4 100755
--- a/Lib/test/test_socket.py
+++ b/Lib/test/test_socket.py
@@ -1518,9 +1518,9 @@ def testGetaddrinfo(self):
         infos = socket.getaddrinfo(HOST, 80, socket.AF_INET, socket.SOCK_STREAM)
         for family, type, _, _, _ in infos:
             self.assertEqual(family, socket.AF_INET)
-            self.assertEqual(str(family), 'AF_INET')
+            self.assertEqual(str(family), 'AddressFamily.AF_INET')
             self.assertEqual(type, socket.SOCK_STREAM)
-            self.assertEqual(str(type), 'SOCK_STREAM')
+            self.assertEqual(str(type), 'SocketKind.SOCK_STREAM')
         infos = socket.getaddrinfo(HOST, None, 0, socket.SOCK_STREAM)
         for _, socktype, _, _, _ in infos:
             self.assertEqual(socktype, socket.SOCK_STREAM)
@@ -1794,8 +1794,8 @@ def test_str_for_enums(self):
         # Make sure that the AF_* and SOCK_* constants have enum-like string
         # reprs.
         with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
-            self.assertEqual(str(s.family), 'AF_INET')
-            self.assertEqual(str(s.type), 'SOCK_STREAM')
+            self.assertEqual(str(s.family), 'AddressFamily.AF_INET')
+            self.assertEqual(str(s.type), 'SocketKind.SOCK_STREAM')
 
     def test_socket_consistent_sock_type(self):
         SOCK_NONBLOCK = getattr(socket, 'SOCK_NONBLOCK', 0)
@@ -1942,41 +1942,6 @@ def test_socket_fileno_requires_socket_fd(self):
                     fileno=afile.fileno())
             self.assertEqual(cm.exception.errno, errno.ENOTSOCK)
 
-    def test_addressfamily_enum(self):
-        import _socket, enum
-        CheckedAddressFamily = enum._old_convert_(
-                enum.IntEnum, 'AddressFamily', 'socket',
-                lambda C: C.isupper() and C.startswith('AF_'),
-                source=_socket,
-                )
-        enum._test_simple_enum(CheckedAddressFamily, socket.AddressFamily)
-
-    def test_socketkind_enum(self):
-        import _socket, enum
-        CheckedSocketKind = enum._old_convert_(
-                enum.IntEnum, 'SocketKind', 'socket',
-                lambda C: C.isupper() and C.startswith('SOCK_'),
-                source=_socket,
-                )
-        enum._test_simple_enum(CheckedSocketKind, socket.SocketKind)
-
-    def test_msgflag_enum(self):
-        import _socket, enum
-        CheckedMsgFlag = enum._old_convert_(
-                enum.IntFlag, 'MsgFlag', 'socket',
-                lambda C: C.isupper() and C.startswith('MSG_'),
-                source=_socket,
-                )
-        enum._test_simple_enum(CheckedMsgFlag, socket.MsgFlag)
-
-    def test_addressinfo_enum(self):
-        import _socket, enum
-        CheckedAddressInfo = enum._old_convert_(
-                enum.IntFlag, 'AddressInfo', 'socket',
-                lambda C: C.isupper() and C.startswith('AI_'),
-                source=_socket)
-        enum._test_simple_enum(CheckedAddressInfo, socket.AddressInfo)
-
 
 @unittest.skipUnless(HAVE_SOCKET_CAN, 'SocketCan required for this test.')
 class BasicCANTest(unittest.TestCase):
diff --git a/Lib/test/test_ssl.py b/Lib/test/test_ssl.py
index fab382f..e523634 100644
--- a/Lib/test/test_ssl.py
+++ b/Lib/test/test_ssl.py
@@ -13,7 +13,6 @@
 import select
 import time
 import datetime
-import enum
 import gc
 import os
 import errno
@@ -373,7 +372,7 @@ def test_str_for_enums(self):
         # Make sure that the PROTOCOL_* constants have enum-like string
         # reprs.
         proto = ssl.PROTOCOL_TLS_CLIENT
-        self.assertEqual(str(proto), 'PROTOCOL_TLS_CLIENT')
+        self.assertEqual(str(proto), '_SSLMethod.PROTOCOL_TLS_CLIENT')
         ctx = ssl.SSLContext(proto)
         self.assertIs(ctx.protocol, proto)
 
@@ -618,7 +617,7 @@ def test_openssl111_deprecations(self):
                 with self.assertWarns(DeprecationWarning) as cm:
                     ssl.SSLContext(protocol)
                 self.assertEqual(
-                    f'{protocol!r} is deprecated',
+                    f'ssl.{protocol.name} is deprecated',
                     str(cm.warning)
                 )
 
@@ -628,7 +627,7 @@ def test_openssl111_deprecations(self):
                 with self.assertWarns(DeprecationWarning) as cm:
                     ctx.minimum_version = version
                 self.assertEqual(
-                    f'ssl.{version!r} is deprecated',
+                    f'ssl.{version!s} is deprecated',
                     str(cm.warning)
                 )
 
@@ -4870,155 +4869,6 @@ def sni_cb(sock, servername, ctx):
                 s.connect((HOST, server.port))
 
 
-class TestEnumerations(unittest.TestCase):
-
-    def test_tlsversion(self):
-        class CheckedTLSVersion(enum.IntEnum):
-            MINIMUM_SUPPORTED = _ssl.PROTO_MINIMUM_SUPPORTED
-            SSLv3 = _ssl.PROTO_SSLv3
-            TLSv1 = _ssl.PROTO_TLSv1
-            TLSv1_1 = _ssl.PROTO_TLSv1_1
-            TLSv1_2 = _ssl.PROTO_TLSv1_2
-            TLSv1_3 = _ssl.PROTO_TLSv1_3
-            MAXIMUM_SUPPORTED = _ssl.PROTO_MAXIMUM_SUPPORTED
-        enum._test_simple_enum(CheckedTLSVersion, TLSVersion)
-
-    def test_tlscontenttype(self):
-        class Checked_TLSContentType(enum.IntEnum):
-            """Content types (record layer)
-
-            See RFC 8446, section B.1
-            """
-            CHANGE_CIPHER_SPEC = 20
-            ALERT = 21
-            HANDSHAKE = 22
-            APPLICATION_DATA = 23
-            # pseudo content types
-            HEADER = 0x100
-            INNER_CONTENT_TYPE = 0x101
-        enum._test_simple_enum(Checked_TLSContentType, _TLSContentType)
-
-    def test_tlsalerttype(self):
-        class Checked_TLSAlertType(enum.IntEnum):
-            """Alert types for TLSContentType.ALERT messages
-
-            See RFC 8466, section B.2
-            """
-            CLOSE_NOTIFY = 0
-            UNEXPECTED_MESSAGE = 10
-            BAD_RECORD_MAC = 20
-            DECRYPTION_FAILED = 21
-            RECORD_OVERFLOW = 22
-            DECOMPRESSION_FAILURE = 30
-            HANDSHAKE_FAILURE = 40
-            NO_CERTIFICATE = 41
-            BAD_CERTIFICATE = 42
-            UNSUPPORTED_CERTIFICATE = 43
-            CERTIFICATE_REVOKED = 44
-            CERTIFICATE_EXPIRED = 45
-            CERTIFICATE_UNKNOWN = 46
-            ILLEGAL_PARAMETER = 47
-            UNKNOWN_CA = 48
-            ACCESS_DENIED = 49
-            DECODE_ERROR = 50
-            DECRYPT_ERROR = 51
-            EXPORT_RESTRICTION = 60
-            PROTOCOL_VERSION = 70
-            INSUFFICIENT_SECURITY = 71
-            INTERNAL_ERROR = 80
-            INAPPROPRIATE_FALLBACK = 86
-            USER_CANCELED = 90
-            NO_RENEGOTIATION = 100
-            MISSING_EXTENSION = 109
-            UNSUPPORTED_EXTENSION = 110
-            CERTIFICATE_UNOBTAINABLE = 111
-            UNRECOGNIZED_NAME = 112
-            BAD_CERTIFICATE_STATUS_RESPONSE = 113
-            BAD_CERTIFICATE_HASH_VALUE = 114
-            UNKNOWN_PSK_IDENTITY = 115
-            CERTIFICATE_REQUIRED = 116
-            NO_APPLICATION_PROTOCOL = 120
-        enum._test_simple_enum(Checked_TLSAlertType, _TLSAlertType)
-
-    def test_tlsmessagetype(self):
-        class Checked_TLSMessageType(enum.IntEnum):
-            """Message types (handshake protocol)
-
-            See RFC 8446, section B.3
-            """
-            HELLO_REQUEST = 0
-            CLIENT_HELLO = 1
-            SERVER_HELLO = 2
-            HELLO_VERIFY_REQUEST = 3
-            NEWSESSION_TICKET = 4
-            END_OF_EARLY_DATA = 5
-            HELLO_RETRY_REQUEST = 6
-            ENCRYPTED_EXTENSIONS = 8
-            CERTIFICATE = 11
-            SERVER_KEY_EXCHANGE = 12
-            CERTIFICATE_REQUEST = 13
-            SERVER_DONE = 14
-            CERTIFICATE_VERIFY = 15
-            CLIENT_KEY_EXCHANGE = 16
-            FINISHED = 20
-            CERTIFICATE_URL = 21
-            CERTIFICATE_STATUS = 22
-            SUPPLEMENTAL_DATA = 23
-            KEY_UPDATE = 24
-            NEXT_PROTO = 67
-            MESSAGE_HASH = 254
-            CHANGE_CIPHER_SPEC = 0x0101
-        enum._test_simple_enum(Checked_TLSMessageType, _TLSMessageType)
-
-    def test_sslmethod(self):
-        Checked_SSLMethod = enum._old_convert_(
-                enum.IntEnum, '_SSLMethod', 'ssl',
-                lambda name: name.startswith('PROTOCOL_') and name != 'PROTOCOL_SSLv23',
-                source=ssl._ssl,
-                )
-        enum._test_simple_enum(Checked_SSLMethod, ssl._SSLMethod)
-
-    def test_options(self):
-        CheckedOptions = enum._old_convert_(
-                enum.FlagEnum, 'Options', 'ssl',
-                lambda name: name.startswith('OP_'),
-                source=ssl._ssl,
-                )
-        enum._test_simple_enum(CheckedOptions, ssl.Options)
-
-
-    def test_alertdescription(self):
-        CheckedAlertDescription = enum._old_convert_(
-                enum.IntEnum, 'AlertDescription', 'ssl',
-                lambda name: name.startswith('ALERT_DESCRIPTION_'),
-                source=ssl._ssl,
-                )
-        enum._test_simple_enum(CheckedAlertDescription, ssl.AlertDescription)
-
-    def test_sslerrornumber(self):
-        Checked_SSLMethod = enum._old_convert_(
-                enum.IntEnum, '_SSLMethod', 'ssl',
-                lambda name: name.startswith('PROTOCOL_') and name != 'PROTOCOL_SSLv23',
-                source=ssl._ssl,
-                )
-        enum._test_simple_enum(Checked_SSLMethod, ssl._SSLMethod)
-
-    def test_verifyflags(self):
-        CheckedVerifyFlags = enum._old_convert_(
-                enum.FlagEnum, 'VerifyFlags', 'ssl',
-                lambda name: name.startswith('VERIFY_'),
-                source=ssl._ssl,
-                )
-        enum._test_simple_enum(CheckedVerifyFlags, ssl.VerifyFlags)
-
-    def test_verifymode(self):
-        CheckedVerifyMode = enum._old_convert_(
-                enum.IntEnum, 'VerifyMode', 'ssl',
-                lambda name: name.startswith('CERT_'),
-                source=ssl._ssl,
-                )
-        enum._test_simple_enum(CheckedVerifyMode, ssl.VerifyMode)
-
 def test_main(verbose=False):
     if support.verbose:
         plats = {
diff --git a/Lib/test/test_unicode.py b/Lib/test/test_unicode.py
index 5db7a9b..a6549c7 100644
--- a/Lib/test/test_unicode.py
+++ b/Lib/test/test_unicode.py
@@ -1466,23 +1466,22 @@ class Float(float, enum.Enum):
             PI = 3.1415926
         class Int(enum.IntEnum):
             IDES = 15
-        class Str(enum.StrEnum):
-            # StrEnum uses the value and not the name for %s etc.
+        class Str(str, enum.Enum):
             ABC = 'abc'
         # Testing Unicode formatting strings...
         self.assertEqual("%s, %s" % (Str.ABC, Str.ABC),
-                         'abc, abc')
+                         'Str.ABC, Str.ABC')
         self.assertEqual("%s, %s, %d, %i, %u, %f, %5.2f" %
                         (Str.ABC, Str.ABC,
                          Int.IDES, Int.IDES, Int.IDES,
                          Float.PI, Float.PI),
-                         'abc, abc, 15, 15, 15, 3.141593,  3.14')
+                         'Str.ABC, Str.ABC, 15, 15, 15, 3.141593,  3.14')
 
         # formatting jobs delegated from the string implementation:
         self.assertEqual('...%(foo)s...' % {'foo':Str.ABC},
-                         '...abc...')
+                         '...Str.ABC...')
         self.assertEqual('...%(foo)s...' % {'foo':Int.IDES},
-                         '...IDES...')
+                         '...Int.IDES...')
         self.assertEqual('...%(foo)i...' % {'foo':Int.IDES},
                          '...15...')
         self.assertEqual('...%(foo)d...' % {'foo':Int.IDES},
diff --git a/Lib/test/test_uuid.py b/Lib/test/test_uuid.py
index 3f56192..d6a8333 100755
--- a/Lib/test/test_uuid.py
+++ b/Lib/test/test_uuid.py
@@ -4,7 +4,6 @@
 import builtins
 import contextlib
 import copy
-import enum
 import io
 import os
 import pickle
@@ -32,13 +31,6 @@ def get_command_stdout(command, args):
 class BaseTestUUID:
     uuid = None
 
-    def test_safe_uuid_enum(self):
-        class CheckedSafeUUID(enum.Enum):
-            safe = 0
-            unsafe = -1
-            unknown = None
-        enum._test_simple_enum(CheckedSafeUUID, py_uuid.SafeUUID)
-
     def test_UUID(self):
         equal = self.assertEqual
         ascending = []