def model_with_inf():
m = Model()
lower = pd.Series(0, range(10))
x = m.add_variables(coords=[lower.index], name="x", binary=True)
y = m.add_variables(lower, name="y")
m.add_constraints(x + y, ">=", 10)
m.add_constraints(1 * x, "<=", np.inf)
m.objective = 2 * x + y
return m
def modified_model():
m = Model()
lower = pd.Series(0, range(10))
x = m.add_variables(coords=[lower.index], name="x", binary=True)
y = m.add_variables(lower, name="y")
c = m.add_constraints(x + y, ">=", 10)
y.lower = 9
c.lhs = 2 * x + y
m.objective = 2 * x + y
return m
