Improving editor.py file

[TheAhumMaitra]

I improved the editor.py, which is now more readable and attractive.

[bedevere-app]

Most changes to Python require a NEWS entry. Add one using the blurb_it web app or the blurb command-line tool.

If this change has little impact on Python users, wait for a maintainer to apply the skip news label instead.

[picnixz]

Please stop creating PRs that are purely cosmetics as we don't accept them.

[terryjreedy]

Ahum, each PR must be created as a separate branch from main so you do not get commits from other changes mixed in.

This looks like you ran editor.py through black.py, an independent 3rd party python code formatter that in some respects violates the spirit and letter of PEP 8. A few of the changes I would make if editing a function, but perhaps 95% of the changes, in particular ' to " and reformats of calls, are to PEP 8 compliant code that is intentionally the way it is. So I would reject them.