该解答借鉴Error: command 'pyright.createtypestub' already exists · Issue #2765 · microsoft/pylance-release (github.com)
问题描述：在visual studio code 中使用python环境出现下面问题：
[Error - 3:47:25 PM] Pylance client: couldn't create connection to server. Error: command 'pyright.createtypestub' already exists
问题解决方法：把python扩展安装成22.4.1版本即可
Reverting to Python extension version 2022.4.1 from 2022.6.0 resolved this issue for me, though your mileage may vary. I did not touch the Pylance extension version.
With version 2022.6.0, the issue wouldn't appear as long as I had a project folder open and contained my work in that regard.
With version 2022.4.1, the issue was gone, regardless of my current working status.
