It's likely to take a while. See Travis's post: http://technicaldiscovery.blogspot.com/2011/10/thoughts-on-porting-numpy-to-pypy.html http://technicaldiscovery.

It's likely to take a while. See Travis's post: http://technicaldiscovery.blogspot.com/2011/10/thoughts-on-porting-numpy-to-pypy.html http://technicaldiscovery.blogspot.com/2011/10/thoughts-on-p... There are two main problems he sees - numpy is a moving target (as it continues to evolve), and the C-API of numpy is one of its most useful features (as lots of numpy extensions like Scipy and matplotlib may require it).