Suggest flattening nested idempotent function applications about pylint HOT 3 OPEN

Hi, thanks for the idea 👋

We already have nested-min-max for min() and max() -- was your proposal that we identify other standard library functions to extend this to?

from pylint.

I also like this proposal a lot. I wonder if we should merge/rename nested-min-max in a 'chained-idempotent' (?) check or create something new entirely. We can also check that __add__ is not overidden using inference : that's the differentiating factor of pylint and why it's slow. (The same way we do it for implicit-booleaness / __bool__ without false positives for pandas/numpy objects)

from pylint.

We already have nested-min-max for min() and max() -- was your proposal that we identify other standard library functions to extend this to?

(I wasn't aware of this checker, but) yes, things like sum, math.prod, etc. Basically anything that's idempotent and free of side effects. Of course, Python being so dynamic you can't ever be sure that nobody's overridden __add__ to do something crazy, but that's the beauty of lints being optional.

from pylint.