Woah! I was all ready to disagree with you, saying 'only for Boolean arguments'.... | Hacker News

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		OJFord on July 23, 2021 \| parent \| context \| favorite \| on: Most URLs are syntactically valid JavaScript code Woah! I was all ready to disagree with you, saying 'only for Boolean arguments'. In years of writing python I really thought `__and__`/`__or__` returned Boolean. (Of course they can, but for builtins I mean.) https://docs.python.org/3/reference/datamodel.html#emulating... It's not made clear here that I can see. Grr, needs type annotations!

maweki on July 23, 2021 | [–]

That's the wrong part of the doc. You refer to the binary operators || and &&, etc.

This is the correct part: https://docs.python.org/3/reference/expressions.html?highlig...

Edit: you can't override "and" and "or" with dunder methods.

OJFord on July 23, 2021 | | [–]

Ahh of course, thanks!

jazzyjackson on July 23, 2021 | [–]

See the language around short-circuiting here

https://docs.python.org/3/library/stdtypes.html#boolean-oper...

The expression is returned based on its truthiness

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