24.10.0

Highlights

• Black is now officially tested with Python 3.13 and provides Python 3.13 mypyc-compiled wheels. (#4436) (#4449)
• Black will issue an error when used with Python 3.12.5, due to an upstream memory safety issue in Python 3.12.5 that can cause Black's AST safety checks to fail. Please use Python 3.12.6 or Python 3.12.4 instead. (#4447)
• Black no longer supports running with Python 3.8 (#4452)

Stable style

• Fix crashes involving comments in parenthesised return types or X | Y style unions. (#4453)
• Fix skipping Jupyter cells with unknown %% magic (#4462)

Preview style

• Fix type annotation spacing between * and more complex type variable tuple (i.e. def fn(*args: *tuple[*Ts, T]) -> None: pass) (#4440)

Caching

• Fix bug where the cache was shared between runs with and without --unstable (#4466)

Packaging

• Upgrade version of mypyc used to 1.12 beta (#4450) (#4449)
• blackd now requires a newer version of aiohttp. (#4451)

Output

• Added Python target version information on parse error (#4378)
• Add information about Black version to internal error messages (#4457)