swh_storage = <swh.storage.validate.ValidatingProxyStorage object at 0x7f010804f160> @pytest.fixture def swh_origins(swh_storage): origins = gen_origins(n=100) > swh_storage.origin_add(origins) .tox/py3/lib/python3.7/site-packages/swh/storage/tests/conftest.py:88: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ .tox/py3/lib/python3.7/site-packages/swh/storage/validate.py:142: in origin_add return self.storage.origin_add([dict_converter(Origin, o) for o in origins]) .tox/py3/lib/python3.7/site-packages/swh/storage/cassandra/storage.py:770: in origin_add for d in [self.origin_get([origin.to_dict() for origin in origins])] .tox/py3/lib/python3.7/site-packages/swh/storage/cassandra/storage.py:771: in <listcomp> if d is not None _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ cls = <class 'swh.model.model.Origin'> d = [None, None, None, None, None, None, ...] @classmethod def from_dict(cls, d): """Takes a dictionary representing a tree of SWH objects, and recursively builds the corresponding objects.""" > return cls(**d) E TypeError: type object argument after ** must be a mapping, not list .tox/py3/lib/python3.7/site-packages/swh/model/model.py:73: TypeError