I should also state, that its a helluva lot easier to get something up and running using cython vs ctypes. So if your not doing application programming intented for distribution, my vote goes to Cython.
I can write my whole script and have it execute to completion using Cython, before i'm even done compiling a C dll. Chris On Wed, May 13, 2009 at 12:31 AM, Chris Colbert <sccolb...@gmail.com> wrote: > What follows is my 0.02, and i'm really new at these two libs so keep in > mind I could be completely off base. I'm sure someone will jump in and > correct my errors. > > I think the speed is really going to depend on the nature of your calls > into the c library. From the code i've examined, there will probably be more > overhead for the function call when using ctypes vs cython, but cython > generated source code is somewhat less than maintainable and I would wager > also less optimized than something you would write yourself. > > If your making lots of rapid calls to short running functions in the > C-library, then you may start to feel the ctypes overhead. > > Chris > On Tue, May 12, 2009 at 11:48 PM, Mohamed Lrhazi <lrh...@gmail.com>wrote: > >> Hello, >> >> How fast/slow is using ctypes to talk to a C lib, compared to doing it >> directly form Cython? >> >> While debugging an issue using ctypes, I found myself writing code >> that was mixing the two methods... the Cython module was passing a >> pointer to my Python code, which then uses ctypes functions to talk >> the C lib, passing the pointer along the way, and it seems to work >> fine... So, my question is, when I have the option to do some >> interaction with the C lib in Cython or in ctypes, which should I go >> with? >> >> ctypes is more pythonic with its Structures concepts.. but is it >> really slow? would I gain from doing it the harder way, in Cython? >> >> Thanks a lot, >> Mohamed. >> _______________________________________________ >> Cython-dev mailing list >> Cython-dev@codespeak.net >> http://codespeak.net/mailman/listinfo/cython-dev >> > >
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