python - ImportError : Can't find framework/System/Library/Frameworks/OpenGL. 框架

Question

我正在尝试在新的 macOs Big Sur 上运行这个简单的健身房示例。

import gym
env = gym.make('CartPole-v0')
env.reset()
for _ in range(1000):
    env.render()
    env.step(env.action_space.sample()) # take a random action
env.close()

但是，我遇到了这个

Traceback (most recent call last):
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/gym/envs/classic_control/rendering.py", line 25, in <module>
    from pyglet.gl import *
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pyglet/gl/__init__.py", line 95, in <module>
    from pyglet.gl.lib import GLException
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pyglet/gl/lib.py", line 147, in <module>
    from pyglet.gl.lib_agl import link_GL, link_GLU, link_AGL
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pyglet/gl/lib_agl.py", line 43, in <module>
    gl_lib = pyglet.lib.load_library(framework='/System/Library/Frameworks/OpenGL.framework')
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pyglet/lib.py", line 124, in load_library
    return self.load_framework(kwargs['framework'])
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/pyglet/lib.py", line 279, in load_framework
    raise ImportError("Can't find framework %s." % path)
ImportError: Can't find framework /System/Library/Frameworks/OpenGL.framework.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/Users/.../myFileName.py", line 19, in <module>
    env.render()
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/gym/core.py", line 240, in render
    return self.env.render(mode, **kwargs)
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/gym/envs/classic_control/cartpole.py", line 174, in render
    from gym.envs.classic_control import rendering
  File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/gym/envs/classic_control/rendering.py", line 32, in <module>
    ''')
ImportError: 
    Error occurred while running `from pyglet.gl import *`
    HINT: make sure you have OpenGL install. On Ubuntu, you can run 'apt-get install python-opengl'.
    If you're running on a server, you may need a virtual frame buffer; something like this should work:
    'xvfb-run -s "-screen 0 1400x900x24" python <your_script.py>'

我关注了this和 this讨论但找不到可行的解决方案。有人可以帮忙吗？

---

附加信息

• macOs Big Sur 11.0.1
• python 3.9.0
• PyOpenGL==3.1.5
• pyglet==1.5.11(在运行 pip install pyglet==1.5.11 后显示 Requirement already satisfied: pyglet==1.5.11 in/Library/Frameworks/.. .，但是，在我的脚本中运行 print(pyglet.version) 时，我得到的是 1.5.0)。如何将其更改为 1.5.11，即使它已经安装？

Answer 1

尝试pip install pyglet==1.5.11

来源 - https://github.com/openai/gym/issues/2101