Andrew Koenig wrote: [snip] > Of course, there are reasons to have a base class anyway. For example, I > might want it so that type queries such as isinstance(foo, Expr) work. My > question is: Are there other reasons to create a base class when I don't > really need it right now?
Well, Python seems to get along fine without the ability to do isinstance(foo,file_like_object); probably better off in the end for it. So I'd say you should generally not do it. Inheritence is for when different classes need to share functionality. -- CARL BANKS -- http://mail.python.org/mailman/listinfo/python-list
