https://docs.conda.io/projects/conda/en/latest/user-guide/tasks/manage-environments.html
~/anaconda3/envs/
conda env list
conda create --name myenv --clone base
cd working/dir
conda activate myenv
conda deactivate
python --version
Python 3.7.4
conda create -n myenv python=3.7
cd working/dir
conda activate myenv
conda deactivate