Use f-strings where possible.

[JevinJ]

Overview

With #905, f-strings can be used.

Converts .format and % syntax to f-strings where possible, including docs.

Some of the conversion was automated so have some caution reviewing.

[codecov]

Codecov Report

Merging #911 into master will increase coverage by 0.00%.
The diff coverage is 63.77%.

@@           Coverage Diff           @@
##           master     #911   +/-   ##
=======================================
  Coverage   86.88%   86.89%           
=======================================
  Files          36       36           
  Lines        8985     8984    -1     
=======================================
  Hits         7807     7807           
+ Misses       1178     1177    -1     

[banesullivan]

LGTM - I didn't look over every change but I assume the tests should catch any issues arising from this.

Thanks for doing this, @JevinJ!

[akaszynski]

Agree with the change. We had a mix of old (%) and newer format methods and it's a good refactor to just use f-strings now that they're supported.

[akaszynski]

I can merge this since it looks like the Python3.5 checks won't be reported since we're not building those. Not sure why it's still requiring those...

Let me know when you're good for me to merge this.

[banesullivan]

I just turned off the 3.5 required checks in the branch protection rules

[akaszynski]

I just turned off the 3.5 required checks in the branch protection rules

Thanks, totally forgot about that. I'll do the same for pyvistaqt if you've not done so.

[JevinJ]

@akaszynski Good to go.