test_operator.py 文件源码

def test_delitem(self):
        a = [4, 3, 2, 1]
        self.assertRaises(TypeError, operator.delitem, a)
        self.assertRaises(TypeError, operator.delitem, a, None)
        self.assertTrue(operator.delitem(a, 1) is None)
        self.assertTrue(a == [4, 2, 1])