def __getitem__(self, val):
        raise NotImplementedError
Return a request_scoped_session that has not been used for a flask app
dataset/ETHPy150Open zbyte64/django-dockit/dockit/backends/base.py/BaseDocumentQuerySet.__getitem__--crossover with--dataset/ETHPy150Open dtheodor/flask-sqlalchemy-session/tests/test_flask_sqlalchemy_session.py/unitialized_session