Here's how I do a nuclear reinstall of VSCode (ie uninstall, reset caches, remove all exteions, etc). It is useful when I am completely at my wit's end. I've only had to do it twice, but wanted to capture it for next time. It is based on microsoft/vscode-python#24839 (comment). It might change in a future version of VSCode; worked for me as of VSCode 1.104.1 to solve microsoft/vscode-python#24839

1. Backup extensions list and config files I care about

   mkdir ~/vscode-backup
   code --list-extensions > ~/vscode-backup/installed-extensions.txt
   cp "$HOME/Library/Application Support/Code/User/settings.json" ~/vscode-backup
   cp "$HOME/Library/Application Support/Code/User/tasks.json" ~/vscode-backup
   cp "$HOME/Library/Application Support/Code/User/keybindings.json" ~/vscode-backup

2. Move VSCode to bin
3. Empty trash
4. 🧨

   rm -rf ~/.vscode
   rm -rf ~/Library/Saved\ Application\ State/com.microsoft.VSCode.savedState
   sudo rm /usr/local/bin/code
   rm ~/Library/Preferences/com.microsoft.VSCode.plist
   rm -rf ~/Library/Caches/com.microsoft.VSCode.ShipIt
   rm -rf ~/Library/Logs/Code
   rm -rf ~/Library/Caches/com.microsoft.VSCode
   rm -rf ~/Library/Application\ Support/Code

5. Restart computer for good measure
6. Reinstall VSCode
7. Open VSCode
8. Open your python project
9. Install python extension
10. Confirm things are now working
11. Reinstall code CLI
12. Move those config backups back

    cp ~/vscode-backup/settings.json "$HOME/Library/Application Support/Code/User" 
    cp ~/vscode-backup/tasks.json "$HOME/Library/Application Support/Code/User" 
    cp ~/vscode-backup/keybindings.json "$HOME/Library/Application Support/Code/User" 

13. Check that things are still working
14. Reinstall extensions manually as you notice they're missing, doing a window reload after each one to confirm things haven't broken again. You could look in ~/vscode-backup/installed-extensions.txt to see what you had before or even use a script like in microsoft/vscode-python#24839 (comment) to automatically reinstall all of them, but it felt good to have a clean slate and only install the stuff I notice is missing 😄