Dynamically attaching a method to an existing Python object generated with swig?

Question

I am working with a Python class, and I don\'t have write access to its declaration. How can I attach a custom method (such as __str__) to the

Answer 1

>>> class C(object):
...     pass
... 
>>> def spam(self):
...     return 'spam'
... 
>>> C.__str__ = spam
>>> print C()
spam

It won't work on classes which use __slots__.