Hello,
I am using Ubuntu 18.04 to evaluate this simple block of code on python.
############################
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()
##############################
I am getting this error
Traceback (most recent call last):
File
"/home/grads/a/Desktop/python/codes/mujoco_experiments/4mujoco/lib/python3.8/site-packages/gym/envs/classic_control/rendering.py",
line 27, in <module>
from pyglet.gl import *
File
"/home/grads/a/Desktop/python/codes/mujoco_experiments/4mujoco/lib/python3.8/site-packages/pyglet/gl/__init__.py",
line 95, in <module>
from pyglet.gl.lib import GLException
File
"/home/grads/a/Desktop/python/codes/mujoco_experiments/4mujoco/lib/python3.8/site-packages/pyglet/gl/lib.py",
line 149, in <module>
from pyglet.gl.lib_glx import link_GL, link_GLU, link_GLX
File
"/home/grads/a/Desktop/python/codes/mujoco_experiments/4mujoco/lib/python3.8/site-packages/pyglet/gl/lib_glx.py",
line 46, in <module>
glu_lib = pyglet.lib.load_library('GLU')
File
"/home/grads/a/Desktop/python/codes/mujoco_experiments/4mujoco/lib/python3.8/site-packages/pyglet/lib.py",
line 164, in load_library
raise ImportError('Library "%s" not found.' % names[0])
*ImportError: Library "GLU" not found.*
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File
"/home/grads/a/Desktop/python/codes/mujoco_experiments/mujoco_expts/main.py",
line 30, in <module>
env.render()
File
"/home/grads/a/Desktop/python/codes/mujoco_experiments/4mujoco/lib/python3.8/site-packages/gym/core.py",
line 254, in render
return self.env.render(mode, **kwargs)
File
"/home/grads/a/Desktop/python/codes/mujoco_experiments/4mujoco/lib/python3.8/site-packages/gym/envs/classic_control/cartpole.py",
line 179, in render
from gym.envs.classic_control import rendering
File
"/home/grads/a/Desktop/python/codes/mujoco_experiments/4mujoco/lib/python3.8/site-packages/gym/envs/classic_control/rendering.py",
line 29, in <module>
raise ImportError(
ImportError:
* Error occurred while running `from pyglet.gl import *`*
HINT: make sure you have OpenGL installed. 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>'
I tried installing "freeglut3-dev" ( as advised by
https://stackoverflow.com/questions/50446867/importerror-library-glu-not-found/52886029
<https://stackoverflow.com/questions/50446867/importerror-library-glu-not-found/52886029>)
and python-opengl, but the the error still persists.
Can anybody help me out??
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