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author	Serhiy Storchaka <storchaka@gmail.com>
	Wed, 14 Jul 2021 04:35:39 +0000 (07:35 +0300)
committer	GitHub <noreply@github.com>
	Wed, 14 Jul 2021 04:35:39 +0000 (07:35 +0300)
commit	81989058de381108dfd0a4255b93d4fb34417002
tree	ed13e2a5964c4efb0fe450b6af8db5ad2e2233ff	tree \| snapshot
parent	0093876328afa330224c9d887c18dee0b3117852	commit \| diff

bpo-44606: Fix __instancecheck__ and __subclasscheck__ for the union type. (GH-27120)

* Fix issubclass() for None.
E.g. issubclass(type(None), int | None) returns now True.
* Fix issubclass() for virtual subclasses.
E.g. issubclass(dict, int | collections.abc.Mapping) returns now True.
* Fix crash in isinstance() if the check for one of items raises exception.

Lib/test/test_types.py		diff \| blob \| blame \| history
Misc/NEWS.d/next/Core and Builtins/2021-07-13-20-22-12.bpo-44606.S3Bv2w.rst	[new file with mode: 0644]	blob
Objects/unionobject.c		diff \| blob \| blame \| history

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