code: def __init__(self, max_size):
      self.buffer = collections.deque(maxlen=max_size)
  
file_path: PARL/examples/tutorials/lesson5/ddpg/replay_memory.py
imports: import random
  import collections
  import numpy
label_desc: Use image node_id 1 to create a new ReplayMemory object from inherited base classes: object with example: obj = ReplayMemory(max_size)