Reformat Python code with Ruff

[mariobehling]

Ruff seems like a good option to make things future proof. Please do not include any other changes in this PR.

[r3yc0n1c]

good idea! I can get started on this.

[alikhere]

@mariobehling I have made the appropriate changes. Please let me know if any further changes are required.

[hongquan]

@alikhere
When using Ruff, it means that we drop Black, isort, Flake. It is meaningless to use both Ruff and Black.

[alikhere]

@hongquan Thanks for the feedback! I’ll remove Black and reformat the code using just Ruff to avoid redundancy and keep things consistent. I’ll update the PR accordingly

[hongquan]

Update requirement:

• Prefer single quote (') over double quote (") to make code less busy to eyes (and requires less key when typing).