参考：
https://blog.csdn.net/weixin_49373427/article/details/131981583
https://blog.csdn.net/CCCDeric/article/details/131788795
======================
安装mujoco报错：
环境：
python3.10
修复方法：
pip install cython==3.0.0a10
[1/1] Cythonizing /home/devil/anaconda3/envs/backup_maml/lib/python3.10/site-packages/mujoco_py/cymj.pyx
performance hint: /home/devil/anaconda3/envs/backup_maml/lib/python3.10/site-packages/mujoco_py/cymj.pyx:67:5: Exception check on 'c_warning_callback' will always require the GIL to be acquired.
Possible solutions:
1. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
2. Use an 'int' return type on the function to allow an error code to be returned.
performance hint: /home/devil/anaconda3/envs/backup_maml/lib/python3.10/site-packages/mujoco_py/cymj.pyx:104:5: Exception check on 'c_error_callback' will always require the GIL to be acquired.
Possible solutions:
1. Declare the function as 'noexcept' if you control the definition and you're sure you don't want the function to raise exceptions.
2. Use an 'int' return type on the function to allow an error code to be returned.
Error compiling Cython file:
------------------------------------------------------------
...
See c_warning_callback, which is the C wrapper to the user defined function
'''
global py_warning_callback
global mju_user_warning
py_warning_callback = warn
mju_user_warning = c_warning_callback
^
------------------------------------------------------------
/home/devil/anaconda3/envs/backup_maml/lib/python3.10/site-packages/mujoco_py/cymj.pyx:92:23: Cannot assign type 'void (const char *) except * nogil' to 'void (*)(const char *) noexcept nogil'. Exception values are incompatible. Suggest adding 'noexcept' to type 'void (const char *) except * nogil'.
Error compiling Cython file:
------------------------------------------------------------
...
See c_warning_callback, which is the C wrapper to the user defined function
'''
global py_error_callback
global mju_user_error
py_error_callback = err_callback
mju_user_error = c_error_callback
^
------------------------------------------------------------