gistfile1.txt

import numpy as np

import openmdao.api as om


class Burn1(om.Group):
    def setup(self):
        self.add_subsystem('comp1', om.ExecComp(['y1=x*2'], y1=np.ones(4), x=np.ones(4)),
                           promotes_outputs=['*'])

        self.add_subsystem('comp2', om.ExecComp(['y2=x*2'], y2=np.ones(4), x=np.ones(4)),
                           promotes_outputs=['*'])

    def configure(self):
        self.promotes('comp1', inputs=[('x', 'design:x')],
                      src_indices=[0, 0, 0, 0], flat_src_indices=True)

        self.set_input_defaults('design:x', 75.3)


class Traj(om.Group):
    def setup(self):
        self.add_subsystem('burn1', Burn1(),
                           promotes_outputs=['*'])

    def configure(self):
        self.promotes('burn1', inputs=['design:x'],
                      src_indices=[0, 0, 0, 0], flat_src_indices=True)



prob = om.Problem(model=Traj())

prob.setup()

prob.run_model()

# builtins.ValueError: The truth value of an array with more than one element is ambiguous. Use a.any() or a.all()

print('done')