class_docstr: Env wrapper that keeps tracks of total raw episode rewards, length of raw episode rewards for evaluation.
      
class_docstr_tok: ["Env","wrapper","that","keeps","tracks","of","total","raw","episode","rewards",",","length","of","raw","episode","rewards","for","evaluation","."]
code: def reset(self, **kwargs):
      self.rewards = []
      return self.env.reset(**kwargs)
  
imports: import numpy
  import gym
  import time
  from parl.env.compat_wrappers import CompatWrapper
label_desc: Use image node_id 4 for calling the MonitorEnv obj's underlying member method code with example usage: obj.reset() and returns: self