1202 - mysterious vscode error, formatter black

#2.1 mystery

- 'pythonpath' still does not generate itself automatically on .vscode folder. Might be this is just the initial setting of an older version. [Potential error spot]

-flake 8 finally installed successfully. Formatter black STILL DOES NOT WORK, nor reflects to settings.json on .vscode folder.

- Leave this step. I spent too much time here. I may find this solution someday.