bug#62696: python.el: Extra indentation for conditionals

[kobarity]

Gustaf Waldemarson wrote:
> Thanks a lot for this! I had no idea that they had changed the relevant PEPs 
> to account
> for this, but as mentioned it is still a good idea to have the option to 
> change this depending
> on your preference. And as far as I have been able to tell from coding with 
> this patch for a
> few hours, it seems to work beautifully and I would love to see this as an 
> official feature!

Hi Gustaf,

Thank you for testing my patch.  I am relieved that it seems to have
fulfilled your request.

As I am not a native English speaker, I welcome any feedback from
anyone on the name and/or docstrings of the new user option as well as
on the behavior and coding.