code: def append(self, obs, action, logprob, reward, done, value):
      self.obs[self.cur_step] = obs
      self.actions[self.cur_step] = action
      self.logprobs[self.cur_step] = logprob
      self.rewards[self.cur_step] = reward
      self.dones[self.cur_step] = done
      self.values[self.cur_step] = value
  
      self.cur_step = (self.cur_step + 1) % self.step_nums
  
imports: import numpy
label_desc: Use image node_id 2 for calling the RolloutStorage obj's underlying member method code with example usage: obj.append(obs, action, logprob, reward, done, value) without return types