Python is its own language, but it allows you to import C and C++ code, thus creating an interface to these languages. Just as with SWIG, you would import a module written in Cython that gives you access to underlying C/C++ code.
Cython is very nice for a lot of applications, but it is not the best tool for every job of designing an interface. SWIG is still preferable if you have a large existing code base to wrap or if you want to support more target languages than just Python. I have a specific need for cross-language polymorphism, and SWIG is much better at that than Cython is. It all depends. Looks like somebody needs to update the c-info.python-as-glue.html page. -Bill On Oct 27, 2014, at 10:04 AM, Glen Mabey <gma...@swri.org> wrote: > On Oct 27, 2014, at 10:45 AM, Sturla Molden <sturla.mol...@gmail.com> > wrote: > >> Glen Mabey <gma...@swri.org> wrote: >> >>> I'd really like for this to be included alongside numpy.i -- but maybe I >>> overestimate the number of numpy users who use complex data (let your >>> voice be heard!) and who also end up using std::complex in C++ land. >> >> I don't think you do. But perhaps you overestimate the number of NumPy >> users who use Swig? > > Likely so. > >> Cython seems to be the preferred wrapping tool today, and it understands >> complex numbers: >> >> cdef double complex J = 0.0 + 1j >> >> If you tell Cython to emit C++, this will result in code that uses >> std::complex<double>. > > I chose swig after reviewing the options listed here, and I didn't see cython > on the list: > > http://docs.scipy.org/doc/numpy/user/c-info.python-as-glue.html > > I guess that's because cython is different language, right? So, if I want to > interactively call C++ functions from say ipython, then is cython really an > option? > > Thanks for the feedback -- > Glen > _______________________________________________ > NumPy-Discussion mailing list > NumPy-Discussion@scipy.org > http://mail.scipy.org/mailman/listinfo/numpy-discussion ** Bill Spotz ** ** Sandia National Laboratories Voice: (505)845-0170 ** ** P.O. Box 5800 Fax: (505)284-0154 ** ** Albuquerque, NM 87185-0370 Email: wfsp...@sandia.gov ** _______________________________________________ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion
