Question

Some classes in our code base inherited from UserDict to act like a dict object.

I was trying to apply a metaclass for them but I couldn’t because they are old-style classes.

So, is there a new-style version of UserDict I can use?

Answer 1

You can inherit from dict in current versions of Python.

From the documentation:

The need for this class has been largely supplanted by the ability to
subclass directly from dict (a feature that became available starting
with Python version 2.2).