pypy is an alternate implementation of Python [1], implemented in Python itself, together with a set of tools for compiling that implementation down to C code. The resulting implementation can, in theory, be faster than the regular "CPython" implementation we know as /usr/bin/python

I've managed to package up pypy for Fedora; I've opened up a review request for it here: https://bugzilla.redhat.com/show_bug.cgi?id=588941

Anyone feel like reviewing it?

You can download F-13 packages from the scratch build here: http://koji.fedoraproject.org/koji/taskinfo?taskID=2147291

Upstream pypy is working on implementing the C extension module API, so in theory we could try recompiling our python extension modules against pypy at some future point. I don't yet know if that's going to be feasible in the F14 timescale, or if we're looking at further in the future.

Hope this is useful Dave

[1] http://pypy.org/