A veritable garden of linters and type checkers has blossomed in the Python ecosystem. . One year later, Meta has released . Pyrefly is intended to stand out from the pack by way of a few key features. It’s written in Rust for performance and memory efficiency, and it has a number of intriguing forward-looking features, some still experimental. Setting up Pyrefly Pyrefly installs into a Python environment like any other Python type checker (pip install pyrefly) and brings with it no additiona...

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