Python formatting and fix typos

[giorgiop]

[davidbyttow]

What did you use as a formatter? Was thinking of adding black or something similar

[francip]

Good cleanup, unfortunately too many other things got merged. Can you rebase and resolve conflicts and I'll merge?

[giorgiop]

What did you use as a formatter? Was thinking of adding black or something similar

yes that was black

[Podidiving]

Great idea to clean up code! I have a couple of suggestions:

• add isort checking
• add linting tool (e.g. flake8)
• create Makefile with targets to automatically reformat/lint all the code before contributing
• update Readme (contributing section), something like "format your code before you commit it"
• (Optionally) make setup.cfg file to introduce custom code style. E.g. I think that default line lengths can be extended a little bit (let's say max-line-length=100 or something like that)