Difference between __getattr__ vs __getattribute__

Question

I am trying to understand when to use __getattr__ or __getattribute__. The documentation mentions __getattribute__ applies to new-style classes. What are new-style classes?

Answer 1

The main difference between __getattr__ and __getattribute__ is that if the attribute was not found by the usual way then __getattr__ is used.

Whereas the __getattribute__ is used before looking at the actual attributes on the object. You will have to use it more consciously otherwise very easily you can end up in infinite recursions.