Comment on Python Performance: Why 'if not list' is 2x Faster Than Using len()

• iAvicenna@lemmy.world ⁨1⁩ ⁨month⁩ ago

  I feel like that only serves the purpose up to the point that methods are not over reaching otherwise then it turns into remembering what a method does for a bunch of unrelated objects.

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• sugar_in_your_tea@sh.itjust.works ⁨1⁩ ⁨month⁩ ago

  dict

  len also works on a dict.

  The point stands. If you want to check if a value is “empty,” use the check for whether it’s “empty.” In Python, that’s not. If you care about different types of empty (e.g. None vs [] vs {}), then make those checks explicit. That reads a lot better than doing an explicit check where the more common “empty” check would be correct, and it also make it a lot more obvious when you’re doing something special.

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