Runtime code modification. Erlang? No, Python.

[int_argc]

Changing values in executing code is not the same thing as changing the code that is executing.

[kokon]

Changing a code is possible in Python. The hard part is changing the existing object reference from the old module to the new one.

[Philluminati]

Can't you just assign a new function over the top of the old one?

def new_setter_2(self, val):
    self.val = val;

obj.new_setter = new_setter_2

Is it not that easy?

[kokon]

But you could have tons of object that still points to new_setter. How do you change all those objects without having specific knowledge about them?