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bpo-45664: Fix resolve_bases() and new_class() for GenericAlias instance as a base (GH-29298) (GH-29928)

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(cherry picked from commit 2b318ce1c9)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
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Miss Islington (bot) 2021-12-07 04:00:06 -08:00 • committed by GitHub
parent e688568cdf
commit bffce2cbb5
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3 changed files with 20 additions and 1 deletions
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2
Lib/types.py
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@ -82,7 +82,7 @@ def resolve_bases(bases):
updated = False
shift = 0
for i, base in enumerate(bases):
if isinstance(base, type):
if isinstance(base, type) and not isinstance(base, GenericAlias):
continue
if not hasattr(base, "__mro_entries__"):
continue