def test_404_error_handler(self):
        r = self.client.get('/abcd/abcd')
        self.assertEqual(r.status_code, 404)
        assert r.data in "404: Not Found"
dataset/ETHPy150Open itsnauman/shrt/test_shrt.py/TestShrt.test_404_error_handler/swapped operands of `in`