def test_type_mismatch_value(self):
    with self.assertRaises(TypeConstraintError):
        self.Varz({'meaning of life': 42, 'fine structure constant': False})
def test_type_mismatch_value(self):
    with self.assertRaises(TypeConstraintError):
        self.Varz({'meaning of life': 42, 'fine structure constant': False})