> 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" Daniel -- http://mail.python.org/mailman/listinfo/python-list