Feature request: check code snippets

[cgthayer]

Feature request: I'd like to be able to run black on a few lines or a function/method within a larger file. I currently use emacs and elpy, which let's me highlight a region and attempt to format it with black, but unless it's at the top-level it doesn't work. Black would need to understand that a section of code may be an indented block.

[JelleZijlstra]

An integration could do this by de-indenting the code, formatting it with Black, then re-indenting it by the amount it originally de-indented it.

[jrosdahl]

See https://github.com/wbolster/emacs-python-black which does this via https://github.com/wbolster/black-macchiato.

[ichard26]

While #1352 is a duplicate of this issue (which itself is a duplicate of #987), that issue has more context, information, and a solution suggestion(!), so closing this in favour of that one.