class_docstr: Environment for RL
class_docstr_tok: ["Environment","for","RL"]
code: def observation_space(self):
      pass
  
file_path: ReAgent/reagent/ope/test/envs.py
imports: import random
  from abc import abstractmethod
  from typing import Optional
  from reagent.ope.estimators.sequential_estimators import Mdp, Model, RLPolicy, State, StateReward, Transition
label_desc: Use image node_id 5 for calling the Environment obj's underlying member method code with example usage: obj.observation_space() without return types