自2020年11月起，Jupyter扩展与VS Code的Python扩展分开了.设置键已从python.dataScience重命名为jupyter

Since Nov 2020 the Jupyter extension is seperated from Python extension for VS Code. The setting key has been renamed from python.dataScience to jupyter^update

因此，根据您的情况，请将python.dataScience.runStartupCommands重命名为jupyter.runStartupCommands

So in your case please rename python.dataScience.runStartupCommands to jupyter.runStartupCommands