The following minimal test case:
diff --git a/tests/cloudpickle_test.py b/tests/cloudpickle_test.py
index d318da7..fec779c 100644
--- a/tests/cloudpickle_test.py+++ b/tests/cloudpickle_test.py@@ -1310,6 +1310,17 @@ class CloudPickleTest(unittest.TestCase):
self.assertEqual(f2.__annotations__, f.__annotations__)
+ def test_slots(self):+ class WithSlots(object):+ __slots__ = ["a"]++ def __init__(self):+ self.a = 42++ obj = WithSlots()+ obj2 = pickle_depickle(obj, protocol=self.protocol)+ self.assertEqual(obj2.a, 42)+
class Protocol2CloudPickleTest(CloudPickleTest):
Fails with this exception:
obj = <tests.cloudpickle_test.CloudPickleTest.test_slots.<locals>.WithSlots object at 0x7f5cdc8f94c8>, protocol = 4
def pickle_depickle(obj, protocol=cloudpickle.DEFAULT_PROTOCOL):
"""Helper function to test whether object pickled with cloudpickle can be
depickled with pickle
"""
> return pickle.loads(cloudpickle.dumps(obj, protocol=protocol))
E AttributeError: type object 'WithSlots' has no attribute 'a'
obj = <tests.cloudpickle_test.CloudPickleTest.test_slots.<locals>.WithSlots object at 0x7f5cdc8f94c8>
protocol = 4
Pickling with pickle from the standard library works.
The following minimal test case:
Fails with this exception:
Pickling with
picklefrom the standard library works.