feat: python虚拟环境补充

python相关/py环境处理.md

@@ -110,3 +110,7 @@ sudo apt install python3.7-venv
 python3.7 -m venv ./.env
 source ./.env/bin/activate
 ```
+#e 退出虚拟环境
+```shell
+deactivate
+```