Tidy up I24 serial code

.vscode/settings.json

@@ -6,10 +6,13 @@
  "python.testing.pytestArgs": [],
  "python.testing.unittestEnabled": false,
  "python.testing.pytestEnabled": true,
- "python.formatting.provider": "black",
+ "python.formatting.provider": "none",
  "python.languageServer": "Pylance",
  "editor.formatOnSave": true,
  "editor.codeActionsOnSave": {
  "source.organizeImports": true
+ },
+ "[python]": {
+ "editor.defaultFormatter": "ms-python.black-formatter"
  }
 }