class_docstr: This replay buffer implements a FIFO queue.
  
  Sometimes, e.g. for offline use cases, it may be desirable to use
  off-policy algorithms without a Replay Buffer.
  This FifoReplayBuffer can be used in-place to achieve the same effect
  without having to introduce separate algorithm execution branches.
  
  For simplicity and efficiency reasons, this replay buffer stores incoming
  sample batches as-is, and returns them one at time.
  This is to avoid any additional load when this replay buffer is used.
class_docstr_tok: ["This","replay","buffer","implements","a","FIFO","queue",".","Sometimes",",","e.g",".","for","offline","use","cases",",","it","may","be","desirable","to","use","off-policy","algorithms","without","a","Replay","Buffer",".","This","FifoReplayBuffer","can","be","used","in-place","to","achieve","the","same","effect","without","having","to","introduce","separate","algorithm","execution","branches",".","For","simplicity","and","efficiency","reasons",",","this","replay","buffer","stores","incoming","sample","batches","as-is",",","and","returns","them","one","at","time",".","This","is","to","avoid","any","additional","load","when","this","replay","buffer","is","used","."]
docstr: Update priorities of items at given indices.
  
  No-op for this replay buffer.
  
  Args:
      ``*args``   : Forward compatibility args.
      ``**kwargs``: Forward compatibility kwargs.
docstr_tok: ["Update","priorities","of","items","at","given","indices",".","No-op","for","this","replay","buffer",".","Args",":","``","*","args","``",":","Forward","compatibility","args",".","``","*","*","kwargs","``",":","Forward","compatibility","kwargs","."]
code: def update_priorities(self, *args, **kwargs) -> None:
      """Update priorities of items at given indices.
  
      No-op for this replay buffer.
  
      Args:
          ``*args``   : Forward compatibility args.
          ``**kwargs``: Forward compatibility kwargs.
      """
      pass
  
file_path: ray/python/ray/rllib/utils/replay_buffers/fifo_replay_buffer.py
imports: import numpy
  from typing import Any, Dict, Optional
  from ray.rllib.policy.sample_batch import MultiAgentBatch
  from ray.rllib.utils.annotations import override
  from ray.rllib.utils.replay_buffers.replay_buffer import ReplayBuffer, StorageUnit
  from ray.rllib.utils.typing import SampleBatchType
  from ray.util.annotations import DeveloperAPI
label_desc: Use image node_id 4 for calling the FifoReplayBuffer obj's underlying member method code with example usage: obj.update_priorities() without return types