[Python-ideas] Python 3000 TIOBE -3%

Guido van Rossum guido at python.org
Thu Feb 9 23:56:37 CET 2012

On Thu, Feb 9, 2012 at 2:25 PM, Andrew McNabb <amcnabb at mcnabbs.org> wrote:

> On Thu, Feb 09, 2012 at 08:53:55PM +0100, Stefan Behnel wrote:
> >
> > AFAIK, there is no concrete roadmap towards supporting SciPy on top of
> > PyPy. Currently, PyPy is getting its own implementation of NumPy-like
> > arrays, but there is currently no interaction with anything in the SciPy
> > world outside of those. Given the shear size of SciPy, reimplementing it
> on
> > top of numpypy is unrealistic.
> I understand that there is some hope in getting cython to support pure
> python and ctypes as a backend, and then to migrate scipy to use cython.
> This is definitely a long-term solution.
> Most people don't depend on all of scipy, and for some use cases, it's
> not too hard to find alternatives.  Today I migrated a project from
> scipy to the GNU Scientific Library (with ctypes).  It now works great
> with PyPy, and I saw a total speedup of 10.6.  Dropping from 27 seconds
> to 2.55 seconds is huge.  It's funny, but for a new project I would go
> to great lengths to try to use the GSL instead of scipy (though I'm sure
> for some use cases it wouldn't be possible).

Hm... is there a reason GSL and SciPy need to compete? Can't SciPy
incorporate GSL?

--Guido van Rossum (python.org/~guido)
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