Formatter?

[eggplants]

I suggest to introduce black like libcst and isort.

[carljm]

Introducing black and isort sounds good to me!

Not sure how libcst is relevant here; MonkeyType does already depend on libcst for monkeytype apply, but that's not related to formatting MonkeyType's own code.

[eggplants]

Not sure how libcst is relevant here

When I thought about what formatter to adopt, I found that libcst uses black and suggested it.

MonkeyType/demo/requirements.txt

Line 2 in cef09c6

black==18.4a2

[carljm]

Sorry, my reading comprehension fail -- you said "black like libcst", I read it as a "black and libcst and isort" :)