Hi (replying please Cc to me) There is a module micronumpy that appeared at PyPy source tree: https://bitbucket.org/pypy/pypy/src/dfae5033127e/pypy/module/micronumpy/ The great contributions of Justin Peel and Ilya Osadchiy to micronumpy module revive step-by-step the functionality of numpy. It would be great if some of numpy-gurus could jump in to assist, contribute some code and also, perhaps, guide a bit where the things go deeply in numpy nature. For those who don't know yet much about PyPy: PyPy is a fast implementation of Python 2.7. As a rule of thumb, PyPy is currently about 4x times faster than CPython. Certain benchmarks taken from the real life show 20x speed-up and more. The successes of PyPy performance are very remarkable http://speed.pypy.org/ best regards -- Valery A.Khamenya