def assertTrue(self, value, err_msg=None):
        if not value:
            msg = repr(value) % "%s is not True"
            raise exceptions.RallyAssertionError(
                self._concatenate_message(msg, err_msg))
dataset/ETHPy150Open openstack/rally/rally/task/functional.py/FunctionalMixin.assertTrue/swapped operands of `%`