How to have black format strings IN python code? [duplicate]

Say I want to use black as an API, and do something like:

import black

black.format("some python code")

Formatting code by calling the black binary with Popen is an alternative, but that's not what I'm asking.

You could try using format_str:

from black import format_str, FileMode
res = format_str("some python code", mode=FileMode())
print(res)

Use black.format_file_contents.

e.g.

import black

mode = black.FileMode()
fast = False
out = black.format_file_contents("some python code", fast, mode)

https://github.com/psf/black/blob/19.3b0/black.py#L642

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