I understand that. And this is what I like in Black. But the single quotes thing is really up to debate. When you use it with other tools such as flake8 or pylint, you have to disable a bunch of things to make them work together because no one agrees on this point.
Seen from outside, I think the double quotes are just the natural form of strings in lots of other places, at least in those that come from the same family than C (C++, Java, C#, Rust, just to name a few)
Also Prettier.js (which I'd call the "Black of JavaScript") also settled on double quotes. So we're left with a de facto consensus across programming languages as a whole, which kind of feels nice.
> When you use it with other tools such as flake8 or pylint, you have to disable a bunch of things to make them work together
Using Flake8 with Black requires only two configuration options [1], while Pylint requires three [2]. If you prefer to use Black with --line-length 79, then it's down to a single configuration option for Flake8 or two for Pylint.
