code: def __init__(self, env):
      gym.Wrapper.__init__(self, env)
      self.max_y = env.desc.shape[0]
      self.max_x = env.desc.shape[1]
      self.t = None
      self.unit = 50
  
file_path: PARL/examples/tutorials/homework/lesson2/q_learning_frozenlake/gridworld.py
imports: import gym
  import turtle
  import numpy
label_desc: Use image node_id 1 to create a new FrozenLakeWapper object from inherited base classes: gym with example: obj = FrozenLakeWapper(env)