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[3.11] gh-93250: [Enum] Change IntEnum boundary to KEEP for backwards compatibility (GH-93302) #93304

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Merged
ethanfurman merged 1 commit into from
May 27, 2022
Merged

[3.11] gh-93250: [Enum] Change IntEnum boundary to KEEP for backwards compatibility (GH-93302) #93304

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2 changes: 1 addition & 1 deletion Lib/enum.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1575,7 +1575,7 @@ def __invert__(self):
__rxor__ = __xor__


class IntFlag(int, ReprEnum, Flag, boundary=EJECT):
class IntFlag(int, ReprEnum, Flag, boundary=KEEP):
"""
Support for integer-based Flags
"""
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12 changes: 10 additions & 2 deletions Lib/test/test_enum.py
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Original file line number Diff line number Diff line change
Expand Up @@ -3349,7 +3349,10 @@ def test_invert(self):
self.assertIs((Open.WO|Open.CE) & ~Open.WO, Open.CE)

def test_boundary(self):
self.assertIs(enum.IntFlag._boundary_, EJECT)
self.assertIs(enum.IntFlag._boundary_, KEEP)
class Simple(IntFlag, boundary=KEEP):
SINGLE = 1
#
class Iron(IntFlag, boundary=STRICT):
ONE = 1
TWO = 2
Expand All @@ -3368,7 +3371,6 @@ class Space(IntFlag, boundary=EJECT):
EIGHT = 8
self.assertIs(Space._boundary_, EJECT)
#
#
class Bizarre(IntFlag, boundary=KEEP):
b = 3
c = 4
Expand All @@ -3385,6 +3387,12 @@ class Bizarre(IntFlag, boundary=KEEP):
self.assertEqual(list(Bizarre), [Bizarre.c])
self.assertIs(Bizarre(3), Bizarre.b)
self.assertIs(Bizarre(6), Bizarre.d)
#
simple = Simple.SINGLE | Iron.TWO
self.assertEqual(simple, 3)
self.assertIsInstance(simple, Simple)
self.assertEqual(repr(simple), '<Simple.SINGLE|<Iron.TWO: 2>: 3>')
self.assertEqual(str(simple), '3')

def test_iter(self):
Color = self.Color
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