Add basic static analysis for python files.

[jurgenwigg]

⚠️ Add basic static analysis for python files.

📝 Description

Basic static analysis for python files could be added as a part of the code review. It would help to introduce some coding standards, i.e. PEP8. There are a lot of tools dedicated to that.

📝 Describe the solution you'd like

I would use pylint for checking if the file is properly formatted for the start. Because at this moment there are a lot of files that don't comply with any python coding guideline mechanism for checking only the newest changes could be also implemented.

Pylint also helps to improve the code itself by proposing changing some expressions to the generator, for example, it detects some unreachable code or variables that are named in not the pythonic way.