Le mardi 27 juin 2006 01:14, Brian Blais a écrit : > t=This() > t.update(5) > t.update=another_update > t.update(5) # this one doesn't work, gives > # TypeError: another_update() takes exactly 2 arguments (1 given) > > > clearly it isn't seeing it as a method, just an attribute which happens to > be a function. Is there a preferred way to do this?
Yes, this is because you assigned it to the instance, not the class, it should be : t=This() t.update(5) This.update=another_update t.update(5) In OOP Methods are defined in *classes* not in any arbitrary object (ie. instances). You can learn more on how it works in python reading about the descriptor protocol of new style class (__getattribute__ special method). To clearly understand what belongs to class and what belongs to instances, try : u=This() t.prop = None t.prop u.prop This.other_prop = None t.other_prop, u.other_prop This.__dict__.items() t.__dict__, u.__dict__ -- _____________ Maric Michaud _____________ Aristote - www.aristote.info 3 place des tapis 69004 Lyon Tel: +33 426 880 097 -- http://mail.python.org/mailman/listinfo/python-list
