GH-101588: Deprecate pickle/copy/deepcopy support in itertools by rhettinger · Pull Request #104965 · python/cpython · GitHub

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Deprecate pickle support for itertools #101588

Add deprecations for itertool pickle support.

Limit category to a DeprecationWarnings

Expand warning message to cover copy and deepcopy as well

Add whatsnew entry

needs backport to 3.12

awaiting core review

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Return NULL instead of None. Add third pass to check warning-to-error…

Minor wording tweak

Merge branch 'main' into itertool_pickle_deprecation

: Deprecate pickle/copy/deepcopy support in itertools (

[3.12] GH-101588: Deprecate pickle/copy/deepcopy support in itertools (GH-104965) (GH-104997)

3.12 backport gh 105236 #105358