def solve_nonlinear(self, params, unknowns, resids):

        x = hash(params['x'])
        y = params['y']

        unknowns['f_xy'] = (x-3.0)**2 + x*y + (y+4.0)**2 - 3.0
Returns the color attribute of the shape.
dataset/ETHPy150Open OpenMDAO/OpenMDAO/openmdao/core/test/test_pbo_desvar.py/PassByObjParaboloid.solve_nonlinear--crossover with--dataset/ETHPy150Open pydy/pydy/pydy/viz/shapes.py/Shape.color