Thanks. So, following an example I found, what I did was: class Report(): def __init__(self, name, cr, uid, ids, data, context): Report.__init__(self) It didn't work. Not even the init was being executed.

I can point out that your code did not perform any inheritance at all. If you inherit a class in Python, you need to include it in the class definition, e.g. class My_Report(Report): ..... Do familiarize yourself with python language and inheritance or get help from someone who does. I can't say that I'm an expert.