code: def __init__(self, env):
      gym.Wrapper.__init__(self, env)
      self.t = None
      self.unit = 50
      self.max_x = 12
      self.max_y = 4
  
file_path: PARL/examples/tutorials/lesson1/gridworld.py
imports: import gym
  import turtle
  import numpy
label_desc: Use image node_id 1 to create a new CliffWalkingWapper object from inherited base classes: gym with example: obj = CliffWalkingWapper(env)