中文文档
https://docs.python.org/zh-cn/3.8/tutorial/venv.html
https://blog.csdn.net/qq_22022063/article/details/78979367
python3 -m venv acheryvenv
cd ~/dba/acheryvenv/bin/
激活
source ~/dba/acheryvenv/bin/activate
sudo pip3 install virtualenv
查看版本
virtualenv --versio
