code: def __init__(self) -> None:
      self.max_steps = 20
      self.action_num = 4
      self.cur_step = -1
      self.observation_space = Box(0.0, 1.0, shape=(self.max_steps,))
      self.action_space = Discrete(n=self.action_num)
  
file_path: ReAgent/reagent/gym/envs/functionality/possible_actions_mask_tester.py
imports: import gym
  import numpy
  from gym.spaces import Box, Discrete
label_desc: Use image node_id 1 to create a new PossibleActionsMaskTester object from inherited base classes: gym with example: obj = PossibleActionsMaskTester()