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know the features of your language
(lemmy.world)
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this post was submitted on 08 Dec 2023
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Python, checking in ...
Parentheses aren't necessary, I just prefer them for readability.
See python documentation on boolean operators for reference. Short story is
a or bis an expression that evaluates toaifais "truthy" elseb. "Falsy" is empty strings/containers,0andNone.You need to be careful here though. You might not intend for
0andNoneto mean the same thing.So this won't do the intended thing if a is 0.
Edit: Sorry I meant to reply to the parent comment, realising now you already write the exact same thing.
Also if a is an empty collection or str, or false.
There was PEP 505 to add a none-aware operator, but it lost support.
That’s a shame, it would have been fitting in “modern” Python along with the walrus and static type system.