, 'PercentageSaved') \ and hasattr(product.LargeImage, 'URL'):
但在我的例子中,它抛出了一个属性错误:AttributeError at /update_products/ no such child: {http://webservices.amazon.com/AWSECommerceService/2011-08-01}LargeImag
我正在尝试运行这个测试:self.assertRaises(AttributeError, branch[0].childrennodes),而branch[0]没有childrennodes属性,所以它应该抛出一个AttributeError,assertRaises应该捕获它,但是当我运行测试时,测试失败了,因为它抛出了一个AttributeError。/tttt/tests.py", line 504, in test_get_categories_branch