external_sp.py

"Can be found in gpkit/docs/source/examples/external_sp.py"
import numpy as np
from external_constraint import ExternalConstraint
from gpkit import Variable, Model

x = Variable("x")
y = Variable("y")

objective = y

constraints = [ExternalConstraint(x, y),
               x <= np.pi/2,
               x >= np.pi/4,
              ]

m = Model(objective, constraints)
print(m.localsolve(verbosity=0).summary())