"neoedmund" <[EMAIL PROTECTED]> writes: > There's a program, it's result is "unexpected aaa", i want it to be > "expected aaa". how to make it work? > > [code] > > class C1(object): > def v(self, o): > return "expected "+o > > class C2(object): > def v(self, o): > return "unexpected "+o > def m(self): > print self.v("aaa") > > class C3(object): > def nothing(self): > pass > > def test1(): > o = C3() > setattr(o,"m",C2().m) > setattr(o,"v",C1().v) > o.m()
Setting attributes on an object externally isn't the same thing as making bound methods of that object. In this case, 'o.m' is a bound method of a C2 instance, and has no knowledge of C1. 'o.v' is a bound method of a C1 instance, and has no knowledge of C2. Neither of them has any knowledge of C3. What is it you're trying to achieve? -- \ "Unix is an operating system, OS/2 is half an operating system, | `\ Windows is a shell, and DOS is a boot partition virus." -- | _o__) Peter H. Coffin | Ben Finney -- http://mail.python.org/mailman/listinfo/python-list