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pypi / libcst

libcst

What changed in libcst 1, from its official release notes, upgrade guides and advisories. Sources checked 2026-10-21.

1 new APIs and options4 fixes and other

See which of these apply to your code, ranked, in your agent:

npx @unstale/cli init

@unstale/cli 0.2.8 on npm

libcst 15 changes

New APIs and options 1

  • Adds helpers for adding and removing imports in codemods.

    1.9.0release notes

Fixes and other changes 4

  • LibCST recognizes Python 3.14 parser configurations.

    1.9.0release notes

  • LibCST adds support for Python 3.15.

    1.9.0release notes

  • LibCST allows a trailing comma after **rest in class patterns.

    1.9.0release notes

  • CodemodCommand's supported_transforms order is now deterministic.

    1.8.6release notes