I have had less time to contribute to pypy lately, so here is where the things I took responsibility for stand: numpy - there are many failing tests due to the way numpy random.seed works. Upstream uses a mtrand module, and I simply wrapped the existing python random module. There are subtle differences between the seed in the different modules, we get a different series when setting the seed in our mtrand module. - numpy.linalg.inv does not work (see below) matplotlib - linlag support in numpy is not really working. This means any kind of point transform does not work, which precludes use of legends and maybe subplots, I did not check. - backend support for a gui framework is also missing. so what works (I last checked 4 months ago) is basic plotting and saving to a file. The repo, for lack of a better place, lives here, I would be happy to put it somewhere more public. https://github.com/mattip/matplotlib master branch Matti
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matti picus