> I expected that when we add this "x" to a class's dictionary and > then we request it from an instance of that class, it will be > converted to an bound-method and receive its --one-- argument > from the referring instance.
Here you are wrong: your b.foo is a bound method - it already _has_ its first argument (an instance of B) bound to it. And just passing it around doesn't change that. You can assign it to a name in whatever scope you like - that won't change its nature. Now if you want to use foo in A as instancemethod, you could do this: A.foo = b.foo.im_func a = A() a.foo(200) That works because im_func is a "pure" function: >>> B.foo.im_func <function foo at 0xb7ac47d4> If things worked as you wanted it to, that would mean that passing a bound method as argument to a class and storing it there to a instance variable that would "eat up" the arguments - surely not the desired behaviour. -- Regards, Diez B. Roggisch -- http://mail.python.org/mailman/listinfo/python-list
