Python: deleting a class attribute in a subclass

Question

I have a subclass and I want it to not include a class attribute that\'s present on the base class.

I tried this, but it doesn\'t work:

>         


        

Answer 1

Think carefully about why you want to do this; you probably don't. Consider not making B inherit from A.

The idea of subclassing is to specialise an object. In particular, children of a class should be valid instances of the parent class:

>>> class foo(dict): pass
>>> isinstance(foo(), dict)
... True

If you implement this behaviour (with e.g. x = property(lambda: AttributeError)), you are breaking the subclassing concept, and this is Bad.