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bpo-46998: Allow subclassing Any at runtime #31841

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Merged
JelleZijlstra merged 15 commits into from
Apr 5, 2022
+44 −31
Merged

bpo-46998: Allow subclassing Any at runtime #31841

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bc71456
bpo-46998: Allow subclassing Any at runtime
Mar 13, 2022
abea39a
make error consistent
Mar 13, 2022
771f492
remove functools checks
Mar 13, 2022
900f2c7
📜🤖 Added by blurb_it.
blurb-it[bot] Mar 13, 2022
6e76441
more tests
Mar 13, 2022
b00ab17
Update Misc/NEWS.d/next/Library/2022-03-13-08-52-58.bpo-46998.cHh-9O.rst
hauntsaninja Mar 13, 2022
4d913ad
oops, fix test
Mar 13, 2022
1c1ab38
cooperative inheritance
Mar 13, 2022
4927e78
fix tests
Mar 13, 2022
68ea3a8
okay, make instancecheck work with multiple inheritance
Mar 13, 2022
f94b7e0
mention in docs
Mar 30, 2022
05db029
Merge remote-tracking branch 'upstream/main' into subclass-any
Mar 30, 2022
e11f405
fix pydoc test
Mar 30, 2022
63b00e4
add a sentence on reasoning
Mar 30, 2022
ac7b4a8
preposition
Mar 31, 2022
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fix tests
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hauntsaninja
hauntsaninja committed Mar 13, 2022
commit 4927e78b9014637ab87f99842f3c3db1cbf458e6
7 changes: 5 additions & 2 deletions Lib/test/test_typing.py
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Original file line number Diff line number Diff line change
Expand Up @@ -106,11 +106,14 @@ class Mock(Any): pass
class Something: pass
self.assertFalse(issubclass(Something, Any))

class MockSomething(Something, Any): pass
class MockSomething(Something, Mock): pass
self.assertTrue(issubclass(MockSomething, Any))
ms = MockSomething()
self.assertIsInstance(ms, Mock)
self.assertIsInstance(ms, MockSomething)
self.assertIsInstance(ms, Something)
with self.assertRaises(TypeError):
# TODO(address in code review): this seems undesirable, should we abandon instancecheck?
self.assertIsInstance(ms, Mock)

def test_cannot_instantiate(self):
with self.assertRaises(TypeError):
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