(cls, actor_class_name)
Get :class:`ActorRef` for all running actors of the given class
        name.

        :param actor_class_name: actor class name
        :type actor_class_name: string

        :returns: list of :class:`pykka.ActorRef`
Get :class:`ActorRef` for all running actors of the given class
        name.
Get : class : ActorRef for all running actors of the given class name .
def get_by_class_name(cls, actor_class_name):
        """
        Get :class:`ActorRef` for all running actors of the given class
        name.

        :param actor_class_name: actor class name
        :type actor_class_name: string

        :returns: list of :class:`pykka.ActorRef`
        """
        with cls._actor_refs_lock:
            return [
                ref
                for ref in cls._actor_refs
                if ref.actor_class.__name__ == actor_class_name
            ]
def get_by_class_name ( cls , actor_class_name ) : with cls . _actor_refs_lock : return [ ref for ref in cls . _actor_refs if ref . actor_class . __name__ == actor_class_name ]