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submitted 6 months ago by abhi9u@lemmy.world to c/technology@lemmy.world

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[–] JustAnotherKay@lemmy.world 1 points 6 months ago (1 children)

Doesn't matter what it implies. The entire purpose of programming is to make it so a human doesn't have to go do something manually.

not x tells me I need to go manually check what type x is in Python.

len(x) == 0 tells me that it's being type-checked automatically

[–] sugar_in_your_tea@sh.itjust.works 1 points 6 months ago

That's just not true:

not x - has an empty value (None, False, [], {}, etc)
len(x) == 0 - has a length (list, dict, tuple, etc, or even a custom type implementing __len__)

You can probably assume it's iterable, but that's about it.

But why assume? You can easily just document the type with a type-hint:

def do_work(foo: list | None):
    if not foo:
        return
    ...