Use optional parentheses for tuples in return statements #6875
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Summary
This PR aligns our tuple formatting in return statements with black.
Black avoids parenthesizing tuples in return statements if breaking by any other parentheses
can make it fit.
The same behavior applies to
yield
, but implementing it is more involved because yield is an expression (and can be nested). I quickly checked, and implementing it didn't increase similarity for any project. I guess, yielding a tuple isn't as common, so I removed the implementation again.Test Plan
Added tests