openerp - How do I make a class (that already exist) inherit another class? -

for example class res.partner. want res.partner inherit class a. how do that?

i don't think work:

class custom_res_partner(osv.osv):      _name           = "res.partner"     _inherit        = "a"  custom_res_partner()

if model present , want inherit model, should done this:

class custom_res_partner(osv.osv):     _name = "res.partner"     _inherit = ['res.partner', 'a']

_name part important here, odoo knows model inherits which. in _inherit need specify res.partner, because extending model.

Macro