MAINT: Do not forward __(deep)copy__
calls of _GenericAlias
to the wrapped type
#20357
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Backport of #20347
In principle we could forgo the backport, but that would mean test failures for Python >= 3.9.8 and >= 3.10.1.
Adapt to the Python 3.9.8 changes made in bpo-45167; this should fix the recent python 3.9 CI failure.