Watchfiles: Simple, modern and fast file watching for Python, written in Rust

Summary

watchfiles Simple, modern and high performance file watching and code reload in python. Documentation: watchfiles.helpmanual.io Source Code: github.com/samuelcolvin/watchfiles Underlying file system notifications are handled by the Notify rust library. This package was previously named "watchgod", see the migration guide for more information. Installation watchfiles requires Python 3.9 - 3.14. pip install watchfiles Binaries are available for most architectures on Linux, MacOS and Windows (learn more). Otherwise, you can install from source which requires Rust stable to be installed. Usage Here are some examples of what watchfiles can do: watch Usage from watchfiles import watch for changes in watch ( './path/to/dir' ): print ( changes ) See watch docs for more details. awatch Usage import asyncio from watchfiles import awatch async def main (): async for changes in awatch ( '/path/to/dir' ): print ( changes ) asyncio . run ( main ()) See awatch docs for more details. run_process Usage from watchfiles import run_process def foobar ( a , b , c ): ... if __name__ == '__main__' : run_process ( './path/to/dir' , target = foobar , args = ( 1 , 2 , 3 )) See run_process docs for more details. arun_process Usage import asyncio from watchfiles import arun_process def foobar ( a , b , c ): ... async def main (): await arun_process ( './path/to/dir' , target = foobar , args = ( 1 , 2 , 3 )) if __name__ == '__main__' : asyncio . run ( main ()) See arun_process docs for more details. CLI watchfiles also comes with a CLI for running and reloading code. To run some command when files in src change: watchfiles "some command" src For more information, see the CLI docs. Or run