@property
    def box(self):
        x, y, width, height = self
        return Box(y, x + width, y + height, x)
Eager loading works with subqueries with labels,
dataset/ETHPy150Open ContinuumIO/ashiba/enaml/enaml/layout/geometry.py/Rect.box--crossover with--dataset/ETHPy150Open zzzeek/sqlalchemy/test/orm/test_eager_relations.py/SubqueryTest.test_label_anonymizing