Às 05:20 de 09-05-2016, Paulo da Silva escreveu: Thank you Yann and Peter.
I really didn't know anything about those "things". So far I have worked a lot with classes but they are written by me. Now I needed to derive pandas.Series (for example) and it has some methods that return pandas.Series objects. And I needed to return the derived object, not the pandas.Series one. The problem is now fixed. I'll find some time to read a little more about this to improve my pyhon knowledge. Thank you very much. -- https://mail.python.org/mailman/listinfo/python-list