On Tue, Jun 1, 2021 at 6:22 AM Serhiy Storchaka <storch...@gmail.com> wrote:
>
> 31.05.21 22:46, Chris Angelico пише:
> > Originally, the notation "..." could only be used inside a subscript,
> > and anywhere else, you'd have to spell it "Ellipsis". Now that you can
> > use "..." anywhere, would it be worth switching the repr to just be
> > that?
>
> How would you then distinguish a recursive list from a list containing
> Ellipsis?
>
>    >>> a = []; a.append(a); a
>    [[...]]
>    >>> [[...]]
>    [[Ellipsis]]

Good point, didn't think of that.

Although... since that's an arbitrary placeholder, it could be changed
to pretty much anything. Maybe <...> or something? The current repr
may not technically be ambiguous, but it will silently do the wrong
thing if you try to eval it. You can even ast.literal_eval(repr(a))
and it'll appear to work.

Not a huge deal whichever way, though. The token "..." is used in a
variety of non-ellipsis ways, such as doctest, and that isn't
inherently a problem.

ChrisA
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