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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_attribute_data(attr_ids, node_ids, **kwargs):
 """ For a given attribute or set of attributes, return all the resources and resource scenarios in the network """

    node_attrs = db.DBSession.query(ResourceAttr).\
                                            options(joinedload_all('attr')).\
                                            filter(ResourceAttr.node_id.in_(node_ids),
                                            ResourceAttr.attr_id.in_(attr_ids)).all()

    ra_ids = []
    for ra in node_attrs:
        ra_ids.append(ra.id)


    resource_scenarios = db.DBSession.query(ResourceScenario).filter(ResourceScenario.resource_attr_id.in_(ra_ids)).options(joinedload('resourceattr')).options(joinedload_all('dataset.metadata')).order_by(ResourceScenario.scenario_id).all()


    for rs in resource_scenarios:
       if rs.dataset.hidden == 'Y':
           try:
                rs.dataset.check_read_permission(kwargs.get('user_id'))
           except:
               rs.dataset.value      = None
       db.DBSession.expunge(rs)

    return node_attrs, resource_scenarios