code: def __init__(self, maxlen):
      self.maxlen = maxlen
      self.data = deque(maxlen=maxlen)
  
imports: from __future__ import absolute_import
  from collections import deque, namedtuple
  import warnings
  import random
  import numpy
label_desc: Use image node_id 1 to create a new RingBuffer object from inherited base classes: object with example: obj = RingBuffer(maxlen)