[xaa]

Sure. I use it for some things and straight C++ for others. Cython is good for simple things, like small tight loops.

One thing that is much more reliable in pure C++ is any kind of threading or OpenMP etc. Theoretically Cython has it, in practice it can cause very weird problems. Also if you want to use C (or C++) libs in Cython, you have to manually declare all the function prototypes before using them.

Also Cython has a tendency to make minor breaking changes to syntax every version, breaking my code and/or making it version-dependent. Since I distribute to others, the best method for linking performance intensive-code to Python I have found is:

1. Write the core in C++

2. extern "C" a simple C API for it

3. Compile both to a SO

4. Access the SO from ctypes

It is more robust than Cython IME. Another advantage of this approach is that you have now have a generic C library you can use anywhere else if you want, not just Python. And you don't have to link -lpython so the C lib can be used in places where Python isn't installed. Finally, it can be nice to have some C++ binaries for startup time, and AFAIK you can't compile binaries with setuptools.

[actuallyalys]

Thank you for your very informative answer!