Minor Python cleanup

[Erotemic]

This contains a minor cleanup for the Python code.

I removed unused imports (Added # NOQA to make linters happy about unused colorama imports, although maybe they can be removed? In any case I do recommend using the more modern rich library if you want pretty colors).

There were f-strings that didn't have any placeholders, so I removed the "f".

There were a few lines that ended with a semicolon, and those are removed.

There were a few inconsistencies in keyword argument assignments. I removed the spaces around the = in those cases to make them consistent.

I also have a question: Is Python 2.7 or Python 3.5- support necessary? The asyncio.coroutine stuff is deprecated, and that should be changed to async def instead. But if older Python support is required, then that stuff shouldn't change.