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Fast Python type checker in TypeScript
MIT
ABOUT
Developers working on large Python codebases need fast, scalable type checking that integrates with their editor and CI pipeline, but existing type checkers can be slow on multi-million-line projects and lack first-class language server protocol (LSP) support. Pyright is written in TypeScript with a high-performance incremental analysis engine that provides sub-second type checking and auto-completion in VS Code via the Pylance extension, while also offering a CLI for CI integration — giving teams both IDE-speed type feedback and pre-commit type safety without switching tools.
INSTALL
pip install pyrightINTEGRATION GUIDE
1. Run pyright in CI pipelines to enforce type correctness across large Python monorepos, leveraging its incremental analysis for fast diff-level type validation on each commit
2. Provide real-time type checking, auto-completion, and inline error reporting in VS Code via the Pylance extension, giving developers immediate type feedback while editing
3. Configure pyright with strict mode, per-directory severity overrides, and type stub paths to enforce graduated typing policies across microservices and library packages
TAGS
pythontype-checkingstatic-analysismicrosoftlsp