Welcome to PyPy’s documentation!

Welcome to the documentation for PyPy, a fast, compliant alternative implementation of the Python language.

All of the documentation and source code is available under the MIT license, unless otherwise specified. Consult LICENSE.


#pypy on irc.libera.chat
Many of the core developers are hanging out here. You are welcome to join and ask questions (if they are not already answered in the FAQ). You can find logs of the channel here.
Development mailing list
Development and conceptual discussions
Commit mailing list
Updates to code and documentation
Development bug/feature tracker
Filing bugs and feature requests
Meeting PyPy developers
The PyPy developers are organizing sprints and presenting results at conferences all year round. They will be happy to meet in person with anyone interested in the project. Watch out for sprint announcements on the development mailing list.

Twitter handle #pypyproject

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Indices and tables