INTERNAL ERROR: Black produced code that is not equivalent to the source.

[adamhammes]

Describe the bug A clear and concise description of what the bug is.

Black won't format my file, and the error message said to report it.

To Reproduce Steps to reproduce the behavior:

1. Take this file: Black playground link

class Orientation(enum.IntEnum):
    North = 0
    East = 1
    South = 2
    West = 3

    def as_coords(self) -> Point:
        # fmt: off
        return Point(*{
            Orientation.North: ( 0,  1),
            Orientation.East:  ( 1,  0),
            Orientation.South: ( 0, -1),
            Orientation.West:  (-1,  0),
        }[self])

    @staticmethod
    def from_char(c: str) -> 'Orientation':
        pass

2. See error: INTERNAL ERROR: Black produced code that is not equivalent to the source.

• Version: [e.g. master]: v20.8b1
• Black Playground, as well as macOS Mojave w/ Python 3.8

Does this bug also happen on master? To answer this, you have two options:

Yes, playground link

Additional context Add any other context about the problem here.

Nothing to add, just wanted to say that I love this tool!

[ichard26]

Another case of #569.

I recommend you add fmt: on after the }[self]) line so you don't get bit by a pretty bad indentation bug when fmt: off applies after the end of scope.

Nothing to add, just wanted to say that I love this tool!

Thank you! Also thanks for submitting this bug report!