https://github.com/python/cpython/commit/14b8655cc37684261a774e4fed5a24d80d3f7dd4 commit: 14b8655cc37684261a774e4fed5a24d80d3f7dd4 branch: 3.13 author: Łukasz Langa <[email protected]> committer: ambv <[email protected]> date: 2026-03-24T02:49:45+01:00 summary:
[3.13] gh-140196: Add constructor behavior changes in ast.rst for python 3.13 (GH-140243) (GH-146354) (cherry picked from commit fae5761a762a587b48430cbcd6e1886034ae8130) Co-authored-by: Parman Mohammadalizadeh <[email protected]> files: M Doc/library/ast.rst diff --git a/Doc/library/ast.rst b/Doc/library/ast.rst index ec6a4a82d6fd7f..42728b1394a372 100644 --- a/Doc/library/ast.rst +++ b/Doc/library/ast.rst @@ -134,6 +134,14 @@ Node classes Simple indices are represented by their value, extended slices are represented as tuples. +.. versionchanged:: 3.13 + + AST node constructors were changed to provide sensible defaults for omitted + fields: optional fields now default to ``None``, list fields default to an + empty list, and fields of type :class:`!ast.expr_context` default to + :class:`Load() <ast.Load>`. Previously, omitted attributes would not exist on constructed + nodes (accessing them raised :exc:`AttributeError`). + .. deprecated:: 3.8 Old classes :class:`!ast.Num`, :class:`!ast.Str`, :class:`!ast.Bytes`, _______________________________________________ Python-checkins mailing list -- [email protected] To unsubscribe send an email to [email protected] https://mail.python.org/mailman3//lists/python-checkins.python.org Member address: [email protected]
