know the features of your language
know the features of your language
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145 comments
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Python, checking in ...
python
return (a or b)
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.
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Also if a is an empty collection or str, or false.
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There was PEP 505 to add a none-aware operator, but it lost support.
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That’s a shame, it would have been fitting in “modern” Python along with the walrus and static type system.
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145 comments