def test_abc(self):
        def build_abc():
            class NoAbstract(Abstract):
                class Meta:
                    proxy = True
        self.assertRaises(TypeError, build_abc)
Looks up a variable like `__getitem__` or `get` but returns an
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.5/tests/modeltests/proxy_models/tests.py/ProxyModelTests.test_abc--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/jinja2-2.6/jinja2/runtime.py/Context.resolve