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I'm not sure if other languages have it, but I have to say that pycharm is excellent at suggesting chained comparisons to you. I didn't know this existed before I switched IDEs.

if 2 > 3 and 2 < 7

becomes

if 3 < 2 < 7

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If this Pycharm really had brains it would tell you that (2>3 and 2<7) reduces to (false and true), to false, at compile time, so the code wrapped in the if is unreachable.

I'm not sure about pycharm, but i know for certain IntelliJ warns you about constant conditions like that. That said, he could have picked that example just to illustrate a point, rather than something it literally suggests.

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