@property
    def is_already_running(self):
        redis_key = self.CELERY_LOCK.format(task_id=self.task_identifier)
        return self.celery_self.backend.client.exists(redis_key)
Returns True if lock exists and has not timed out.
dataset/ETHPy150Open Robpol86/Flask-Celery-Helper/flask_celery.py/_LockManagerRedis.is_already_running