Cython is nearly always the answer to scientific computing in Python, including wrapping C++.
Sturla Michael Kreim <mich...@perfect-kreim.de> wrote: > Hi, > > we are working on a small scientific program that helps us in developing > and testing of new numerical methods for a certain type of biochemical > problems. I spare you the math ;-) > > We code our new methods in Python and compare them with the existing > methods. Unfortunately, these existing methods are quite slow and need a > lot of runtime. Therefor we implemented them in C++. > > Now, we like to combine these two approaches. So we can develop a new > method in Python and compare it easily with the results from the C++ > functions. > > I did some googleing on extending Python by C++ code but I did not find > something that satisfies me. I gave SWIG a try, but several webpages > disadvised me of using it. Also my small experiments did not work. Now, > I read about ctypes. But as far as I understood it, I have to write a C > wrapper for my C++ code and then a Python wrapper for my C code. That > seems a little complicated. > > My C++ code is structured as a class that contains several variables and > functions. Then everything is compiled as a shared library. I can write > things like: > > MyClass.initialvalue = 5; > MyClass.timestep = 0.1; > ... > MyClass.solve(); > > I would like to keep this structure in python, but if I understand > ctypes correctly I would loose the class approach. > > So after the long writeup I come to my questions: > > What are you using to wrap C++ classes for Python? > Can you recommend swig? Should I give it another try? > Did I misunderstood ctypes? > > Also later on in our code development we would like to pass python > lambda functions to C++. So far I understood that this seems not to be > possible. Do you have any ideas or hints on this topics? > > Thank you very much. > > Cheers, > > Michael -- https://mail.python.org/mailman/listinfo/python-list
