# rpytest

> rpytest is a Rust-powered, drop-in replacement for pytest that eliminates startup and collection overhead while keeping your existing tests, fixtures, and plugins completely untouched. Same CLI, same flags, same conftest.py, same exit codes — just a persistent Python daemon keeping the interpreter warm.

rpytest is built and maintained by Neul Labs. It is MIT-licensed and the source lives at https://github.com/neul-labs/rpytest. The codebase is a Rust workspace (`rpytest`, `rpytest-core`, `rpytest-ipc`, `rpytest-daemon`) plus a Python daemon that hosts real pytest.

## Docs

- [Home](https://rpytest.neullabs.com/): Overview, benchmark, features, FAQ
- [About](https://rpytest.neullabs.com/about/): The drop-in thesis and the daemon architecture
- [Blog](https://rpytest.neullabs.com/blog/): Collection cost, plugin compatibility, CI measurement methodology
- [Full docs](https://docs.neullabs.com/rpytest/): API reference, configuration, daemon management

## Compare

- [vs pytest](https://rpytest.neullabs.com/compare/pytest/)
- [vs pytest-xdist](https://rpytest.neullabs.com/compare/pytest-xdist/)

## Optional

- [RSS](https://rpytest.neullabs.com/rss.xml): Blog feed
- [Source on GitHub](https://github.com/neul-labs/rpytest)