[Python-ideas] method decorators @final and @override in Python 2.4

Hi, If Python had method decorators @final (meaning: it is an error to override this method in any subclass) and @override (meaning: it is an error not having this method in a superclass), I would use them in my projects (some of them approaching 20 000 lines of Python code) and I'll feel more confident writing object-oriented Python code. Java already has similar decorators or specifiers. Do you think it is a good idea to have these in Python? I've created a proof-of-concept implementation, which uses metaclasses, and it works in Python 2.4 an Python 2.5. See http://www.math.bme.hu/~pts/pobjects.py and http://www.math.bme.hu/~pts/pobjects_example.py Best regards, Péter