Python Tooling Blog

Astral releases ty, a Rust-based Python type checker that's 20x faster than mypy with advanced type narrowing and incremental checking.

December 16, 2025

LLMs default to outdated Python patterns. The handbook provides llms.txt and structured context to teach AI assistants modern tooling.

November 21, 2025

Configure Claude Code hooks to prevent pip and python commands and enforce uv usage in your Python projects.

November 11, 2025

sync-with-uv automatically synchronizes tool versions between uv.lock and .pre-commit-config.yaml to prevent version drift.

September 26, 2025

Rob Hand compares three Rust-based Python type checkers: ty (Astral), pyrefly (Meta), and zuban, covering performance and tradeoffs.

September 17, 2025

prek is a Rust-based drop-in replacement for pre-commit that runs 10x faster while using half the disk space.

September 16, 2025

uv 0.8.13 adds experimental uv format command that runs Ruff's formatter, similar to how cargo fmt wraps rustfmt.

August 21, 2025

Google ends Pytype support after Python 3.12. The bytecode-based type checker couldn't keep up with modern typing and IDE requirements.

August 21, 2025

Charlie Marsh explains ty's incremental analysis system that recomputes only affected code when files change, from file-level to function-level.

August 11, 2025

How PEP standards enabled Astral to build ruff, uv, and ty that work seamlessly within the Python ecosystem without being part of core.

August 1, 2025