Release v4.3.3 · pylint-dev/astroid

What's new in astroid 4.3.3?

Release date: 2026-09-30

Preserve the length of inferred list and tuple concatenations when an element
has multiple possible values. An ambiguous or uninferable element is now
represented as unknown instead of being expanded into multiple sequence items.

Refs #3221
Closes pylint-dev/pylint#2621
Fix TypeError in ClassDef.getitem when __class_getitem__ is uninferable.

Closes #3312
Fix AssertionError in NodeNG.root() when inferring Class.__bases__, which previously returned a parentless Tuple.

Closes pylint-dev/pylint#11491