Dear Søren, * Søren <s...@syntonetic.com> [2013-03-21]: > Your article fell in dry spot when a newbie in C/Python interfacing. > Python-C-API fits perfectly with my current use-case. > > I got currious about the Ctypes approach as well as "Gaël Varoquaux’s > blog post about avoiding data copies", but the link in the article > didn't seem to work. (Under "Further Reading and References")
There seems to be something wrong with Gaël's website. I have CC him, maybe he can fix it. best V- > > cheers > Søren > > On 21/03/2013 09:41, Valentin Haenel wrote: > > Dear Søren, > > > > if you are new to interfacing python/numpy with C/C++, you may want to > > check out: > > > > http://scipy-lectures.github.com/advanced/interfacing_with_c/interfacing_with_c.html > > > > Disclaimer: I am the author of this chapter, so this response is a bit > > of a shameless plug :D > > > > Hope it helps. > > > > V- > > > > * Søren <s...@syntonetic.com> [2013-03-21]: > >> Thanks Robert, for making that clear. > >> > >> I got a deprecated warning the second I added > >> #include <numpy/arrayobject.h> > >> and I got scared off too fast in my exploring phase. > >> > >> Cheers > >> Søren > >> > >> On 20/03/2013 17:03, Robert Kern wrote: > >>> On Wed, Mar 20, 2013 at 1:59 PM, Søren <s...@syntonetic.com> wrote: > >>>> Greetings > >>>> > >>>> I'm extending our existing C/C++ software with Python/Numpy in order to > >>>> do extra number crunching. > >>>> It already works like a charm calling python with the C API <Python.h>. > >>>> > >>>> But what is the proper way of passing double arrays returned from > >>>> Python/Numpy routines back to C? > >>>> > >>>> I came across PyArray but I can see in the compiler warnings, it is > >>>> deprecated and I don't wanna start from scratch on legacy facilities. > >>> What is this `PyArray` that you are referring to? There is nothing > >>> named just `PyArray` to my knowledge. Do you mean direct access to the > >>> `data` member of the PyArrayObject struct? Yes, that is deprecated. > >>> Use the PyArray_DATA() macro to get a `void*` pointer to the start of > >>> the data. > >>> > >>> http://docs.scipy.org/doc/numpy/reference/c-api.array.html#PyArray_DATA > >>> > >>> -- > >>> Robert Kern > >>> _______________________________________________ > >>> NumPy-Discussion mailing list > >>> NumPy-Discussion@scipy.org > >>> http://mail.scipy.org/mailman/listinfo/numpy-discussion > >> _______________________________________________ > >> NumPy-Discussion mailing list > >> NumPy-Discussion@scipy.org > >> http://mail.scipy.org/mailman/listinfo/numpy-discussion > > _______________________________________________ > NumPy-Discussion mailing list > NumPy-Discussion@scipy.org > http://mail.scipy.org/mailman/listinfo/numpy-discussion _______________________________________________ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion
