Supported base classes

[szoshi]

Hi, I have read the docs a couple of times and seem to understand that only certain builtin base classes like int, list etc can be extended. Is that correct? If yes, how difficult would it be to add support for some other classes? I am interested in the 'range' and 'set' built in classes.

[szoshi]

I have read a bit more and learnt that 'range' is a final class and hence cannot be subclassed. It works with set like with the other classes. Can 'range' be extended at the CPython level?

[binyamin555]

@szoshi Have you tried using the @extension decorator and extend_type_with on these classes? It should be possible to do so.