Overview Pyrefly, the Python type checker and linter from Meta, has just dropped its first full 1.0 release. It's intended to be a solid alternative to existing type checking/linting tools like Mypy ...

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The performance of mypy is important, and we appreciate contributions that improve the performance of mypy, either overall, or in specific use cases. Contributions that regress performance ...

What is most striking about Python’s latest wave of third-party tooling is that they aren’t written in Python. Instead, many of the newer tools for project management, code formatting, and now type ...

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Still using Python 3.7? Even Microsoft thinks it is time to move on after the Windows behemoth finally deprecated support for the language in the October 2023 release of its extension for Visual ...

If you run mypy using the mypy tool, it performs incremental checking by default. This tries to reuse type checking results from the previous run via files in the .mypy_cache directory. This ...