Expose special method lookup at Python level

Feature or enhancement

Proposal:

As noted in the review of #144420, the Python level implementation of special method lookup has heavy dependency, and we need to expose the C level function.

Has this already been discussed elsewhere?

This is a minor feature, which does not need previous discussion elsewhere

Links to previous discussion of this feature:

No response

Linked PRs

• gh-144990

Objects/typeobject.c の 2922-2983 行にある C レベルの特殊メソッド検索の実装から始め、次に PR #144420 とリンクされている PR #144990 の議論を読んでください。提案で説明されている重い依存関係なしに、既存の検索が Python レベルで公開されれば完了です。