Extremely hacky, just about seems to work for logging changes ... can't figure out the way to go with accesses though

watch_obj_for_attr_changes.py

class MutationObserver(wrapt.ObjectProxy):

    def __init__(self, *args, **kwargs):
        super(MutationObserver, self).__init__(*args, **kwargs)
        self.__dict__['_self_changed'] = []
        self.__dict__['_self_used'] = []

    def __setattr__(self, key, value):
        if key.startswith('_self_'):
            self.__dict__[key] = value
        else:
            self.__dict__['_self_changed'].append((key, value))
            super(MutationObserver, self).__setattr__(key, value)

    def __repr__(self):
        return '<MutationObserver wrapping {0!r}; seen mutations are: {1!r}>'.format(
            self.__wrapped__,
            self._self_changed,
        )

    def changed_keys(self):
        return sorted({x[0] for x in self._self_changed})
    #
    # def used_keys(self):
    #     return sorted({x[0] for x in self._self_used})
    #
    # def __getattribute__(self, item):
    #     if item.startswith('_self_'):
    #         return super(MutationObserver, self).__getattribute__(item)
    #     elif item == "__dict__":
    #         return super(MutationObserver, self).__getattribute__(item)
    #     elif item == "__wrapped__":
    #         return super(MutationObserver, self).__getattribute__(item)
    #     else:
    #         self.__dict__['_self_used'].append(item)
    #         return super(MutationObserver, self).__getattribute__(item)