def requirements_get(self):
        # If missing signature we can't add requirement for finding actor's requires.
        if self._signature:
            return self._deployment_requirements + [{'op': 'shadow_actor_reqs_match',
                                                 'kwargs': {'signature': self._signature,
                                                            'shadow_params': self._shadow_args.keys()},
                                                 'type': '+'}]
        else:
            _log.error((self.name, self.id) % "Shadow actor %s - %s miss signature")
            return self._deployment_requirements
dataset/ETHPy150Open EricssonResearch/calvin-base/calvin/actor/actor.py/ShadowActor.requirements_get/swapped operands of `%`