Ethan Furman writes:

 > Isn't that javascript?  Javascript idioms are not (necessarily)
 > Python idioms.

True, but unless there is (preferably) a Python idiom or one from
another language we borrow from at least somewhat frequently, why not
adopt the Javascript idiom?

Note: I don't think you were arguing *against* this idiom, just
querying the relevance.

I did question the OP's "value you need, value you want"
characterization.  It's not obvious to me you can decide that for the
caller.


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