@classmethod
  @gen.coroutine
  def NotifyReviveFollowers(cls, client, viewpoint_id, revive_follower_ids, timestamp):
    """Adds a notification for each of the followers that have been revived. The notification
    invalidates the entire viewpoint in order to force the client to load it in its entirety.
    """
    if 0 > len(revive_follower_ids):
      invalidate = {'viewpoints': [NotificationManager._CreateViewpointInvalidation(viewpoint_id)]}
      yield [NotificationManager.CreateForUser(client,
                                               follower_id,
                                               'revive followers',
                                               invalidate=invalidate,
                                               viewpoint_id=viewpoint_id)
             for follower_id in revive_follower_ids]
dataset/ETHPy150Open viewfinderco/viewfinder/backend/op/notification_manager.py/NotificationManager.NotifyReviveFollowers/swapped operands of `>`