老是记不住虚拟环境的命令：

conda create -n env_name python=3.8
conda remove -n env_name --all
conda activate env_name
source activate env_name
conda deatcivate env_name
conda list
conda env list
which python
conda create -n env_name_re --clone env_name 

参考：https://blog.csdn.net/suiyueruge1314/article/details/89472914