運行openai的gym代碼報錯提示import pyglet，安裝后依然報錯：ImportError: sys.meta_path is None, Python is likely shutting down

運行代碼：

import gym

def cartpole():
    environment = gym.make('CartPole-v1')
    environment.reset()
    for _ in range(1000):
        environment.render()
        action = environment.action_space.sample()
        observation, reward, done, info = environment.step(action)
        print("Step {}:".format(_))
        print("action: {}".format(action))
        print("observation: {}".format(observation))
        print("reward: {}".format(reward))
        print("done: {}".format(done))
        print("info: {}".format(info))
    
if __name__ == '__main__':
    
    cartpole()

 

報錯，提示需要安裝pyglet:

 

 

 

 

安裝pyglet：

pip install pyglet

 

 

 

再次運行依然報錯：

 

 

 

 

 

最后發現其原因在pyglet的版本問題：

卸載pyglet並重新安裝即可解決：

pip uninstall pyglet

pip install pyglet==1.2.4  

 

 

成功解決錯誤。