conda info --envs
conda create --name DS_ML python =3.7
python -m ipykernel install --user --name DS_ML --display-name "Python (DSML)"
conda install ipykernel
cd /
sudo rm -rf anaconda
python -m ipykernel install --user
ipython kernel install --user --name 가상환경 --display-name "Python(가상환경)"