[Python-ideas] kwargs for return
Michael Selik
mike at selik.org
Sat Jan 26 10:14:06 EST 2019
On Sat, Jan 26, 2019, 6:30 AM Anders Hovmöller <boxed at killingar.net wrote:
>
> > I don't see anything here that can't be done by returning a dict, a
> > namedtuple (possibly with optional fields), or some other object with
> > named fields. They can be optional, they can have defaults, and you can
> > extend the object by adding new fields without breaking backwards
> > compatibility.
>
> That assumes you knew before hand to do that. The question is about the
> normal situation when you didn't.
>
> Also you totally disregarded the call site where there is no way to do a
> nice dict unpacking in python. The tuple case is super special and
> convenient but strictly worse than having properly named fields.
>
> To me this question sounds like it's about dict unpacking with one special
> case to keep backwards compatibility.
>
My "destructure" module might help. I was playing around with the idea of
dict unpacking and extended it to a kind of case matching.
https://github.com/selik/destructure
Grant Jenks independently came to almost the same idea and implementation.
>
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