def render(self, request):
        """
        I produce a stream of bytes for the request, by calling request.write()
        and request.finish().
        """
        raise NotImplementedError(reflect.qual(self.__class__) % "%s.render")
dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/python/roots.py/Entity.render/swapped operands of `%`