"The newest type checker on the block is Astral's ty, the maker of Ruff. Ty is another super-fast Python utility written in Rust. To install ty with uv, run the following: uv tool install ty@latest If you do not want to use uv, you can use the standalone installer. Instructions vary depending on your platform, so it is best to refer to the documentation for the latest information. Note: Technically, you can use pip or pipx to install ty as well."
"In general, if you run mypy in strict mode, then running ty without changing any of its settings is very similar. However, ty currently does not highlight missing type hints. If you need to enforce adding type hints, you can use Ruff's flake8-annotations. Here is how to enable the flak8-annotations in your pyproject.toml file: If you have other rules already selected, you can add "ANN" to the end of the list to enable it. .github/workflows/ty.yml Make sure you include the leading period!"
Python supports type hinting since 3.5 but the interpreter does not enforce types. External type checkers such as mypy, Pyright, and Pyrefly perform static checking. Astral's ty is a new Rust-based, high-performance Python type checker that can be installed via uv (uv tool install ty@latest), a standalone installer, or pip/pipx. Ty behaves similarly to mypy in strict mode but does not flag missing annotations. Ruff's flake8-annotations can enforce annotation presence by enabling the ANN rule in pyproject.toml. A sample GitHub Actions workflow can run ty on pull requests using setup-python 3.12.
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