[3.13] gh-88834: Unify the instance check for typing.Union and types.UnionType (GH-128363) #128370
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…nionType (pythonGH-128363) Union now uses the instance checks against its parameters instead of the subclass checks. (cherry picked from commit b2ac70a) Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
miss-islington
requested review from
AlexWaygood and
JelleZijlstra
as code owners
This was referenced Dec 31, 2024
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Union now uses the instance checks against its parameters instead of
the subclass checks.
(cherry picked from commit b2ac70a)
Co-authored-by: Serhiy Storchaka storchaka@gmail.com