def test_symbols(self):
self.assertListEqual(list(symbols('x y')), [self.x, self.y])
self.assertListEqual(list(symbols('x,y')), [self.x, self.y])
def test_symbols(self):
self.assertListEqual(list(symbols('x y')), [self.x, self.y])
self.assertListEqual(list(symbols('x,y')), [self.x, self.y])