Python expression_to_string Examples

Example #1

File: test_visitor.py Project: rayphaistos1/rayNetwork

    def test_expression_to_string(self):
        M = ConcreteModel()
        M.x = Var()
        M.w = Var()

        e = sin(M.x) + M.x*M.w + 3
        self.assertEqual("sin(x) + x*w + 3", expression_to_string(e))
        M.w = 2
        M.w.fixed = True
        self.assertEqual("sin(x) + x*2 + 3", expression_to_string(e, compute_values=True))

Example #2

File: test_visitor.py Project: Pyomo/pyomo

    def test_expression_to_string(self):
        M = ConcreteModel()
        M.x = Var()
        M.w = Var()

        e = sin(M.x) + M.x*M.w + 3
        self.assertEqual("sin(x) + x*w + 3", expression_to_string(e))
        M.w = 2
        M.w.fixed = True
        self.assertEqual("sin(x) + x*2 + 3", expression_to_string(e, compute_values=True))

Example #3

    def test_expression_component_to_string(self):
        m = ConcreteModel()
        m.x = Var()
        m.y = Var()
        m.e = Expression(expr=m.x * m.y)
        m.f = Expression(expr=m.e)

        e = m.x + m.f * m.y
        self.assertEqual("x + ((x*y))*y", str(e))
        self.assertEqual("x + ((x*y))*y", expression_to_string(e))