code: def __init__(self, observation_space, render_mode=None):
      self.observation_space = observation_space
      self.obs_keys = self.observation_space.spaces.keys()
      self.action_space = Box(
          shape=(1,), low=-1, high=1, dtype=np.float32
      )
      self.render_mode = render_mode
  
file_path: gym/tests/wrappers/test_nested_dict.py
imports: from typing import Optional
  import numpy
  import pytest
  import gym
  from gym.spaces import Box, Dict, Tuple
  from gym.wrappers import FilterObservation, FlattenObservation
label_desc: Use image node_id 1 to create a new FakeEnvironment object from inherited base classes: gym with example: obj = FakeEnvironment(observation_space, render_mode)