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## Summary Adds a simple progress bar for the `ty check` CLI command. The style is taken from uv, and like uv the bar is always shown - for smaller projects it is fast enough that it isn't noticeable. We could alternatively hide it completely based on some heuristic for the number of files, or only show it after some amount of time. I also disabled it when `--watch` is passed, cancelling inflight checks was leading to zombie progress bars. I think we can fix this by using [`MultiProgress`](https://docs.rs/indicatif/latest/indicatif/struct.MultiProgress.html) and managing all the bars globally, but I left that out for now. Resolves https://github.com/astral-sh/ty/issues/98. |
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ty
ty is an extremely fast type checker. Currently, it is a work-in-progress and not ready for user testing.
ty is designed to prioritize good type inference, even in unannotated code, and aims to avoid false positives.
While ty will produce similar results to mypy and pyright on many codebases, 100% compatibility with these tools is a non-goal. On some codebases, ty's design decisions lead to different outcomes than you would get from running one of these more established tools.
Contributing
Core type checking tests are written as Markdown code blocks.
They can be found in ty_python_semantic/resources/mdtest.
See ty_test/README.md for more information
on the test framework itself.
The list of open issues can be found here.