[OJFord]

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]

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]

Ahh of course, thanks!

[jazzyjackson]

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