I forgot you are using C++.


Yes, all my code is in C++, and in fact the code I use in Python should be object-oriented as well, that's why it is not that easy to define how I'm going to do this...
 

Using C++ with ctypes makes the wrapping
more difficult, I think, specially since you are using templates: you
would have to write a C wrapper around your classes, and then using
ctypes on the wrapper (there may be better ways, but I don't see an
obvious one). Basically, using ctypes is like using code from a
dynamically loaded library (ala VST :) ).


That works great for C then, not that well for C++...
 

But writing some C code kills
one of the strong point of ctypes (doing all the wrapping in python).


Yes, but even with SWIG, I think I'll have to write wrapper in C or in SWIG to transform one array in my matrix and vice versa. Well, that should be a great example for my book ;)
 

I have attached a simplistic example which show how to wrap some functions.

Many thanks, it is simple, I only have to provide the wrappers :| and I have to do something with the class instance :| I'll think a little bit about how to do this properly and efficiently


Matthieu