Gon=E7alo Rodrigues wrote: > My problem has to do with super that does not seem to work well with > properties. I encountered simmilar problems, and wrote a class, 'duper', which=20 behaves like 'super', but handles attributes deffined by arbitrary=20 descriptors cooperatively. It is available from=20 http://www.ai.mit.edu/~nati/Python/ Nati