Guillotina Objects Slots

object.py

import pickle


class A(object):
    __slots__ = ('__foo', '__bar')

    @property
    def _p_bar(self):
        return object.__getattribute__(self, '_A__bar')

    def __getstate__(self):
        return self.__dict__


class EE(A):

    def __init__(self):
        self.hola = 'hola'

# What is on the object
ee = EE()
ee._A__bar = 3
assert '__bar' not in ee.__dict__
assert ee._A__bar == 3
try:
    assert ee._A__car == 3
    raise Exception()
except AttributeError:
    pass
assert ee._p_bar == 3
ppp = pickle.dumps(ee)
eee = pickle.loads(ppp)
try:
    assert eee._A__bar == 1
    raise Exception()
except AttributeError:
    pass