ImportError:找不到框架/系统/库/框架/System框架

Question

我试着在新的macOs大苏尔上运行这个简单的健身房例子。

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>'

我跟踪了这和这的讨论，但没有找到一个可行的解决方案。有人能帮忙吗？

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之后，它显示了Requirement already satisfied: pyglet==1.5.11 in /Library/Frameworks/...，但是，在我的脚本中运行print(pyglet.version)时，我得到了1.5.0)。即使1.5.11已经安装，我如何才能将它更改为它呢？

Answer 1

试试pip安装pyglet==1.5.11

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

Answer 2

我有macOS大Sur 11.1和Pychram CE 2020.3

1. Python 3.7
2. Tensorflow 1.14.0 (用于A2C)
3. PyOpenGL 3.1.5
4. 健身房0.17.3
5. Pyglet 1.5.14

然后，我从Python解释器中安装了pyglet1.5.14。值得一提的是

pip安装pyglet==1.5.14

没有解决错误，但是Python解释器的pyglet 1.5.14工作了。