Work through pylint issues

[eljonny]

Before I started on the journey to add flawfinder and infer, the GH StaticAnalysis linter Action passed/ran clean.
The code I have changed and added has added a number of issues, and they should be fixed before it is merged to get back to the state of running clean.

I also reset .pylintrc locally to see what all it would output, which is what is in the sub-issues.
I made the max-line-length align with PEP-8 too.
I kept ignore=__init__.py as that seems reasonable for this project.

I will do one of these things for each issue:

• Fix the issue
• Set a meaningful threshold
• Suppress the issue

[eljonny]

Only fix errors in the previously-linked PR, work other issues in other PRs.