如何修改python版本？linux安装python3和pip3方法？python后台运行？

https://jingyan.baidu.com/album/59703552a566ba8fc00740df.html?picindex=2

https://www.cnblogs.com/jadexia/p/7797791.html

https://www.cnblogs.com/rkfeng/p/6338107.html