Writing a function from within Python

[Aaron Scott]

Is it possible to change the content of a function after the function
has been created? For instance, say I make a class:

	class MyClass:
		def ClassFunction(self):
			return 1

And I create an object:

	MyObject = MyClass()

Is there any way to change the content of the function, a la pseudo-
code:

	MyObject.ClassFunction = "return 2"

Thanks for any insight you might be able to offer.