[C++-sig] Dynamic resolution of members and methods

[Jérémie Delaitre]

Hello,

I have a C++ class that use a custom property system.
This property system allows me to add and remove properties at runtime.

I want to expose this class into Python.

The problem is: I want "a dynamic resolution" of the properties in Python.

For example:

# import my python extension
import myModule

# get an instance of my C++ class
t = myModule.newInstance()

# access the property 'myProperty'
print(t.myProperty)

When I access the property, I want python to call a "callback" of mine 
(written
in the C++ extension) which will check if the requested property exists, and
if it does, return the corresponding value, otherwise generate an exception.

By looking at the python C API, I did not find a way to achieve this. It 
seems
that declaring a new type requires to have static arrays for members and 
methods
(yes, my property system allows me to declare new methods too, so I want 
to expose
them with a similar system).

Any idea how I could resolve this (with Python3.0) ?

Regards,

Jérémie Delaitre