On 12 mai, 18:38, "Daniel Nogradi" <[EMAIL PROTECTED]> wrote: > > I've got an instance of a class, ex : > > > b=gtk.Button() > > > I'd like to add methods and attributes to my instance "b". > > I know it's possible by hacking "b" with setattr() methods. But i'd > > like to do it with inheritance, a kind of "dynamic subclassing", > > without subclassing the class, only this instance "b" ! > > > In fact, i've got my instance "b", and another class "MoreMethods" > > > class MoreMethods: > > def sayHello(self): > > print "hello" > > > How could i write ... > > > "b = b + MoreMethods" > > > so "b" will continue to be a gtk.Button, + methods/attributs of > > MoreMethods (it's what i call "dynamic inheritance") ...so, things > > like this should work : > > > - b.set_label("k") > > - b.sayHello() > > > I can't find the trick, but i'm pretty sure it's possible in an easy > > way. > > How about: > > class MoreMethods: > def sayHello(self): > print "hello" > > class myButton( gtk.Button, MoreMethods ): > pass > > b = myButton( ) > > isinstance( b, gtk.Button ) # True > b.sayHello( ) # "hello"
yes, but it needs to recreate an instance (of mybutton) ... i can't do that, in my context. The only things i've got is my instance "b" (which can be whatever object). i'd like to add methods/attributes to this instance, by adding a heritage of another class. > Daniel thanks -- http://mail.python.org/mailman/listinfo/python-list