tf_agents 下 mujoco_py 报错 CompileError 解决记录

摘要：

最近强化学习需要用到 tf-agents ，记录一下使用过程遇到的问题。

版本说明：

tensorflow                    2.14.0
gym                           0.23.0
tf-agents                     0.17.0
numpy                         1.24.0
ale-py                        0.8.1

 报错1:

  File "/home/ys/.conda/envs/gaoshd_tf/lib/python3.9/site-packages/mujoco_py/builder.py", line 149, in build_extensions
    build_ext.build_extensions(self)
  File "/home/ys/.conda/envs/gaoshd_tf/lib/python3.9/site-packages/Cython/Distutils/old_build_ext.py", line 195, in build_extensions
    _build_ext.build_ext.build_extensions(self)
  File "/home/ys/.conda/envs/gaoshd_tf/lib/python3.9/site-packages/setuptools/_distutils/command/build_ext.py", line 467, in build_extensions
    self._build_extensions_serial()
  File "/home/ys/.conda/envs/gaoshd_tf/lib/python3.9/site-packages/setuptools/_distutils/command/build_ext.py", line 493, in _build_extensions_serial
    self.build_extension(ext)
  File "/home/ys/.conda/envs/gaoshd_tf/lib/python3.9/site-packages/setuptools/_distutils/command/build_ext.py", line 548, in build_extension
    objects = self.compiler.compile(
  File "/home/ys/.conda/envs/gaoshd_tf/lib/python3.9/site-packages/setuptools/_distutils/ccompiler.py", line 600, in compile
    self._compile(obj, src, ext, cc_args, extra_postargs, pp_opts)
  File "/home/ys/.conda/envs/gaoshd_tf/lib/python3.9/site-packages/setuptools/_distutils/unixccompiler.py", line 187, in _compile
    raise CompileError(msg)
distutils.errors.CompileError: command '/usr/bin/gcc' failed with exit code 1

 解决方案：

该原因是因为使用 pip 安装了 mujoco 和 mujoco_py , 应该从 github 上手动下载并创建目录，这里参考 https://blog.csdn.net/qq_47997583/article/details/125400418 即可。注意要先 pip 卸载掉 mujoco 和 mujoco_py  否则会冲突

报错2:

  File "/home/ys/.conda/envs/gaoshd_tf/lib/python3.9/site-packages/ale_py/env/gym.py", line 155, in __init__
    self.seed()
  File "/home/ys/.conda/envs/gaoshd_tf/lib/python3.9/site-packages/ale_py/env/gym.py", line 206, in seed
    raise error.Error(
gym.error.Error: We're Unable to find the game "Breakout". Note: Gym no longer distributes ROMs. 
If you own a license to use the necessary ROMs for research purposes you can download them via `pip install gym[accept-rom-license]`.
 Otherwise, you should try importing "Breakout" via the command `ale-import-roms`. If you believe this is a mistake perhaps your copy of 
"Breakout" is unsupported. To check if this is the case try providing the environment variable `PYTHONWARNINGS=default::ImportWarning:ale_py.roms`.
 For more information see: https://github.com/mgbellemare/Arcade-Learning-Environment#rom-management

 解决方案：

按照报错提示 

`pip install gym[accept-rom-license]` 即可，安装后执别忘了执行 AutoROM