On Fri, Aug 15, 2014 at 08:29:09PM -0700, Ethan Furman wrote:
> On 08/15/2014 08:08 PM, Steven D'Aprano wrote:
[...]
> >is a poor argument (that is, I'm disagreeing with it), since *single*
> >line parens-free with statements are already syntactically a tuple:
> >
> > with spam, eggs, cheese: # Commas make a tuple, not parens.
>
> This point I do not understand -- commas /can/ create a tuple, but don't
> /necessarily/ create a tuple. So, semantically: no tuple.
Right! I think we are in agreement. It's not that with statements
actually generate a tuple, but that they *look* like they include a
tuple. That's what I meant by "syntactically a tuple", sorry if that was
confusing. I didn't mean to suggest that Python necessarily builds a
tuple of context managers.
If people were going to be prone to mistake
with (a, b, c): ...
as including a tuple, they would have already mistaken:
with a, b, c: ...
the same way. But they haven't.
--
Steven
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