pyrefly
A fast type checker and IDE for Python
Installation
To install this package, run one of the following:
Usage Tracking
0.54.0
0.53.0
0.52.0
0.51.1
0.51.0
5 / 8 versions selected
Downloads (Last 6 months): 0
Description
Pyrefly is a fast type checker for Python. It's designed to replace the existing Pyre type checker at Meta by the end of 2025. This README describes basic usage. See the Pyrefly website for full documentation and a tool for checking code.
About
Summary
A fast type checker and IDE for Python
Last Updated
Feb 24, 2026 at 23:10
License
MIT
Total Downloads
51.7K
Version Downloads
424
Supported Platforms
macOS-arm64
macOS-64
win-64
linux-64
linux-aarch64
Home
http://pyrefly.org/GitHub Repository
https://github.com/facebook/pyreflyDocumentation
https://pyrefly.org/en/docs/