使用gym-super-mario-bros 7.4.0官方例程运行报错

[Mosazh]

使用gym-super-mario-bros 7.4.0官方例程运行报错

环境：

1. python 3.8.18
2. nes-py 8.2.1
3. gym-super-mario-bros 7.4.0
4. 使用vs code Jupyter插件运行

from nes_py.wrappers import JoypadSpace
import gym_super_mario_bros
from gym_super_mario_bros.actions import SIMPLE_MOVEMENT
env = gym_super_mario_bros.make('SuperMarioBros-v0')
env = JoypadSpace(env, SIMPLE_MOVEMENT)

done = True
for step in range(5000):
    if done:
        state = env.reset()
    state, reward, done, info = env.step(env.action_space.sample())
    env.render()

env.close()

报错提示：

---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
Cell In[10], line 11
      9     if done:
     10         state = env.reset()
---> 11     state, reward, done, info = env.step(env.action_space.sample())
     12     env.render()
     14 env.close()

File d:\software\anaconda3\envs\RLE2\lib\site-packages\nes_py\wrappers\joypad_space.py:74, in JoypadSpace.step(self, action)
     59 """
     60 Take a step using the given action.
     61 
   (...)
     71 
     72 """
     73 # take the step and record the output
---> 74 return self.env.step(self._action_map[action])

File d:\software\anaconda3\envs\RLE2\lib\site-packages\gym\wrappers\time_limit.py:50, in TimeLimit.step(self, action)
     39 def step(self, action):
     40     """Steps through the environment and if the number of steps elapsed exceeds ``max_episode_steps`` then truncate.
     41 
     42     Args:
   (...)
     48 
     49     """
---> 50     observation, reward, terminated, truncated, info = self.env.step(action)
     51     self._elapsed_steps += 1
     53     if self._elapsed_steps >= self._max_episode_steps:

ValueError: not enough values to unpack (expected 5, got 4)

请问是哪里出现问题呢？

[scottHGITUHB]

pip install gym==0.24.0
就可以了，会自动把高版本的gym给卸载掉