code: def __init__(self, buffer_max_length, percentile):
      self.buffer_max_length = buffer_max_length
      self.percentile = percentile
      self.buffer = []
  
file_path: ray/rllib_contrib/alpha_zero/src/rllib_alpha_zero/alpha_zero/ranked_rewards.py
imports: from copy import deepcopy
  import numpy
label_desc: Use image node_id 1 to create a new RankedRewardsBuffer object  with example: obj = RankedRewardsBuffer(buffer_max_length, percentile)