On Tue, Nov 3, 2009 at 8:40 PM, Antoine Pitrou <solip...@pitrou.net> wrote: > Sturla Molden <sturla <at> molden.no> writes: >> >> Porting NumPy is not a trivial issue. It might take >> a complete rewrite of the whole C base using Cython. > > I don't see why they would need a rewrite.
(let me know if those numpy-specific discussions are considered OT0 There is certainly no need for a full rewrite, no. I am still unclear on the range of things to change for 3.x, but the C changes are not small, especially since numpy uses "dark" areas of python C extension. The long vs int, strings vs bytes will take some time. AFAIK, the only thing which has been attempted so far is porting our own distutils extension to python 3.x, but I have not integrated those changes yet. > between 2.x and 3.x. Cython itself is supposed to support both 2.x and 3.x, > isn't it? Yes - but no numpy code use cython ATM, except for the random generators, which would almost certainly be trivial to convert. The idea which has been discussed so far is that for *some* code which need significant changes or rewrite, using cython instead of C may be beneficial, as it would give the 3.x code "for free". Having more cython and less C could also bring more contributors - that would actually be the biggest incentive, as the number of people who know the core C code of numpy is too small. > That's interesting, because PEP 3118 was pushed mainly by a prominent member > of > the NumPy community and some of its features are almost dedicated to NumPy. I have not been involved with PEP 3118 discussion, so cannot comment on the reason why it is not fully supported yet by numpy. But I think that's a different issue altogether - PEP 3118 goal is for interoperation with other packages. We can port to PEP 3118 without porting to 3.x, and we can port to 3.x without taking care of PEP 3118. David _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
