test_operator.py 文件源码

def test_lshift(self):
        self.assertRaises(TypeError, operator.lshift)
        self.assertRaises(TypeError, operator.lshift, None, 42)
        self.assertTrue(operator.lshift(5, 1) == 10)
        self.assertTrue(operator.lshift(5, 0) == 5)
        self.assertRaises(ValueError, operator.lshift, 2, -1)