Say I have a python class from odoo that inherits 'res.partner' to add a number of fields to the model.
To improve overall code clearness I want to separate that file into two pieces. So in my module I will have two python files that both inherit res.partner. However, when I inherit res.partner again I get an error saying that there is a column missing (the first field in the second python file).
How can I inherit from the same model twice within the same custom module?