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PyPy: Python in Python Implementation

Welcome to PyPy!

PyPy is both an implementation of the Python programming language, and an extensive compiler framework for dynamic language implementations. You can build self-contained Python implementations which execute independently from CPython.

The home page is:

If you want to help developing PyPy, this document might help you:

It will also point you to the rest of the documentation which is generated from files in the pypy/doc directory within the source repositories. Enjoy and send us feedback!

the pypy-dev team <>


build with:

$ rpython/bin/rpython -Ojit pypy/goal/

This ends up with pypy-c binary in the main pypy directory. We suggest to use virtualenv with the resulting pypy-c as the interpreter; you can find more details about various installation schemes here:

Recent activity

Armin Rigo

Armin Rigo pushed 2 commits to pypy/pypy

eb2840c - First step: reporting in the logs (PYPYLOG=stm-report:-)
d8ac085 - import stmgc/7660960de054 (branch "marker")
Armin Rigo

Armin Rigo pushed 4 commits to pypy/pypy

75b8ab0 - merge heads
2305dd9 - Bah? term.h contains "#define tab ..."
766be3e - Use the passed-in segment_base, instead of relying on STM_SEGMENT.
db460ef - import stmgc/8bd21f95eb8a (branch "marker")
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