attribute 'timedelta' Datetime property when performance a Query

[albertog]

File "/home/albertog/Documents/spyder-2.3.0beta1/scripts/semtable/test/test.py", line 43, in main
q.fetch(1)

File "gcloud/datastore/query.py", line 247, in fetch
return [Entity.from_protobuf(entity) for entity in entity_pbs]

File "gcloud/datastore/entity.py", line 148, in from_protobuf
value = helpers.get_value_from_protobuf(property_pb)

File "gcloud/datastore/helpers.py", line 82, in get_value_from_protobuf
datetime.timedelta(microseconds=microseconds))

AttributeError: type object 'datetime.datetime' has no attribute 'timedelta'