[3.13] gh-58211: Add tests for the `__self__` attribute of builtins functions (GH-113575) by miss-islington · Pull Request #132437 · python/cpython

…nctions (pythonGH-113575)

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(cherry picked from commit 891465f)

Co-authored-by: Adorilson Bezerra <adorilson@gmail.com>
Co-authored-by: Victor Stinner <vstinner@python.org>
Co-authored-by: Alex Waygood <Alex.Waygood@Gmail.com>
Co-authored-by: Bénédikt Tran <10796600+picnixz@users.noreply.github.com>
Co-authored-by: Sergey B Kirpichev <skirpichev@gmail.com>
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

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