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Pyrefly: A new type checker and IDE experience for Python
Today we are announcing an alpha version of Pyrefly, an open source Python type checker and IDE extension crafted in Rust. Pyrefly is a static type checker that analyzes Python code to ensure type …
This mission led to the birth of the Pyre type checker, inspired by the robust designs of Hack and Flow, and written in OCaml to deliver scalable performance. We want the IDE and command line to share a consistent view of the world, which means crafting abstractions that capture the differences without incurring unnecessary costs. Pyrefly was created By Meta’s Python Language Tooling Team: Jia Chen, Rebecca Chen, Sam Goldman, David Luo, Kyle Into, Zeina Migeed, Neil Mitchell, Maggie Moss, Conner Nilsen, Aaron Pollack, Teddy Sudol, Steven Troxler, Lucian Wischik, Danny Yang, and Sam Zhou.
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