"Carl Banks" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED]
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.
That's really the question: Is it for when they need to share functionality, or when they are conceptually related in ways that might lead to shared functionality later?
I've typically only done the former. But I've definitely extracted common ancestors later when I did find that two different classes should share functionality.
STeVe -- http://mail.python.org/mailman/listinfo/python-list
