def execute(self):

        x = self.x
        y = self.y

        self.f_xy = (x-3.0)**2 + x*y + (y+4.0)**2 - 3.0
Asserts that val is an existing path to a file and that file is a child of parent.
dataset/ETHPy150Open OpenMDAO/OpenMDAO-Framework/openmdao.main/src/openmdao/main/test/test_system.py/Paraboloid.execute--crossover with--dataset/ETHPy150Open ActivisionGameScience/assertpy/assertpy/assertpy.py/AssertionBuilder.is_child_of