On Mar 26, 6:49 pm, Bruno Desthuilliers <[EMAIL PROTECTED]> wrote: > ------------ > class Test(object): > pass
> def greet(x): > print "hello" > Test.func = greet > print Test.func > t = Test() > print t.func > def sayBye(x): > print "bye" > t.bye = sayBye > print t.bye > ------------output: > <unbound method Test.greet> > <bound method Test.greet of <__main__.Test object at 0x6dc50>> > <function sayBye at 0x624b0> > > > Because t.bye is an attribute of instance t, not of class Test. A > descriptor object has to be a class attribute for the descriptor > protocol to be invoked. Hurray! Like this: t.func -> __getattribute__() -> __get__() -> create method object and return it t.bye -> __getattribute__() -> return sayBye > FWIW, if you want to dynamically add a method to an instance: > inst.method = func.__get__(inst, inst.__class__) Nice. -- http://mail.python.org/mailman/listinfo/python-list
