code: def step(self, action):
      ob, r, done, info = self.env.step(action)
      self.cnt += 1
      if self.cnt == self.k:
          done = True
      return ob, r, done, info
  
imports: import gym
  import numpy
  from collections import deque
  from gym import spaces
label_desc: Use image node_id 3 for calling the LimitLength obj's underlying member method code with example usage: obj.step(action) and returns: ob,  r,  done,  info