@vbelus do you think it is possible to / could you also develop an example with some classes? For example a class that from the C++ part:

• gets initialized with an exponent (init method)
• has a set_array method that takes an array, computes array**exponent and stores it in the class (set_array method)
• has a get_array method that returns the stored array (get_array method).

This is to check that we manage to have some form of persistence from the C++ side while calling from the Python (may be very useful in the case when we want some stuff to survive on the C++ class independently of the python).