Can I extend a third-party library?

[francisr]

In my project I'm using a third-party C++ library that exposes some functionality through pybind.
I'd like to create a pybind interface to my C++ project, but I need it to be compatible with the objects exposed by the third-party library.

If I link to the library my code compiles, but when trying to use the Python bindings, I get errors because it doesn't realise that the python object it's trying to use is wrapping the same C++ object.

How do I solve this problem?