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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def node_created_handler(sender, **kwargs):
 """ send notification when a new node is created according to users's settings """

    if kwargs['created']:
        obj = kwargs['instance']
        queryset = exclude_owner_of_node(obj)
        create_notifications.delay(**{
            "users": queryset,
            "notification_model": Notification,
            "notification_type": "node_created",
            "related_object": obj
        })