Pickle all attributes except one

Question

What is the best way to write a __getstate__ method that pickles almost all of an object\'s attributes, but excludes a few?

I have an object wi

Answer 1

Using is_instance_method from an earlier answer:

def __getstate__(self):
    return dict((k, v) for k, v in self.__dict__.iteritems()
                       if not is_instance_method(getattr(self, k)))

Although the is_instance_method operation can also be performed less "magically" by taking an known instance method, say my_func, and taking its type.

def __getstate__(self):
    instancemethod = type(self.my_func)
    return dict((k, v) for k, v in self.__dict__.iteritems()
                       if not isinstance(getattr(self, k), instancemethod))