Bruno Desthuilliers wrote: > Frank Millman wrote: > > [EMAIL PROTECTED] wrote: > >> There aren't abstract classes in Python. They are all > >> concrete. > (snip) > > I use the term 'abstract class' in the abstract sense :-) > > > > Say I have three classes where 90% of the attributes and methods are > > common. It makes sense to create a base class with these attributes and > > methods, and turn each of the three classes into a subclass which > > inherits from the base class and overrides the bits that are unique to > > each one. > > > > This is what I call an abstract class. Maybe there is a more correct > > term. > > Depends if instanciating this base class would make any sense. >
It would not make sense, no. I have not gone to the trouble of raising NotImplementedError - the methods that the subclasses *must* override just have a 'pass' statement. I guess it would be more correct to raise the error, as it would give me a quicker indication of an error if I happened to omit one, but in practice I would find out pretty quickly anyway. Frank -- http://mail.python.org/mailman/listinfo/python-list
