issue23673
add private method to enum to support replacing global constants with Enum members:
- search for candidate constants via supplied filter
- create new enum class and members
- insert enum class and replace constants with members via supplied module name
- replace __reduce_ex__ with function that returns member name, so previous Python versions can unpickle
modify IntEnum classes to use new method
diff --git a/Lib/test/test_enum.py b/Lib/test/test_enum.py
index dccaa4f..5db4040 100644
--- a/Lib/test/test_enum.py
+++ b/Lib/test/test_enum.py
@@ -581,6 +581,14 @@
test_pickle_dump_load(self.assertIs, self.NestedEnum.twigs,
protocol=(4, HIGHEST_PROTOCOL))
+ def test_pickle_by_name(self):
+ class ReplaceGlobalInt(IntEnum):
+ ONE = 1
+ TWO = 2
+ ReplaceGlobalInt.__reduce_ex__ = enum._reduce_ex_by_name
+ for proto in range(HIGHEST_PROTOCOL):
+ self.assertEqual(ReplaceGlobalInt.TWO.__reduce_ex__(proto), 'TWO')
+
def test_exploding_pickle(self):
BadPickle = Enum(
'BadPickle', 'dill sweet bread-n-butter', module=__name__)