Migrate to f-string

[Rotzbua]

Change

• Migrate to f-string
• Remove outdated format specifiers

[florianfesti]

Is there any reason to covert some things to f strings and others to .format() ?

[Rotzbua]

The first step of the conversion by pyupgrade is always percent to .fromat style.
From .format to f-string is not always done as the tool notes:

pyupgrade is intentionally timid and will not create an f-string if it would make the expression longer or if the substitution parameters are sufficiently complicated (as this can decrease readability).

Source: https://github.com/asottile/pyupgrade#f-strings

Also it does not convert multi-line .format and I personally try not to avoid f-string for complex function calls.

If you prefer some different style then just write it 👍

[florianfesti]

Nah, I was just wondering if there is a reason. Getting rid of the Python2 code is a good thing no matter what variant being used.