text: from gym.envs.registration import register
  
  register(
      id='interplanetary-v0',
      entry_point='gym_interplanetary.envs:InterplanetaryEnv',
  )
  register(
      id='interplanetary-extrahard-v0',
      entry_point='gym_interplanetary.envs:InterplanetaryExtraHardEnv',
  )
  