pypy /

Filename Size Date modified Message
473 B
improve .gitignore (Vincent Legoll, PR #385)
2.6 KB
ignore cffi build artifacts on windows
0 B
hg merge default
3.2 KB
Added tag release-pypy3.5-v5.10.1 for changeset 3f6eaa010fce
11.4 KB
update year
1.6 KB
Fix the Makefile to produce the pypy-c inside pypy/goal/, like we
1.3 KB
mention pypy3-c in this README too
2.3 KB
typos, cleanup
41 B
move pytest.ini to the toplevel to ensure we always use the addopts
1.3 KB
Fix (probably a merge error?)
196 B
cannot pip install vmprof on arm, s390x

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 <>


First switch to or download the correct branch. The basic choices are default for Python 2.7 and, for Python 3.X, the corresponding py3.X branch (e.g. py3.5).

Build with:

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

This ends up with a pypy-c or pypy3-c binary in the main pypy directory. We suggest to use virtualenv with the resulting pypy-c/pypy3-c as the interpreter; you can find more details about various installation schemes here: