list.sort, was Re: [Python-Dev] decorate-sort-undecorate
Gustavo Niemeyer
niemeyer at conectiva.com
Fri Oct 17 14:39:16 EDT 2003
> >> If anything at all, i'd suggest a std-module which contains e.g.
> >> 'sort', 'reverse' and 'extend' functions which always return
> >> a new list, so that you could write:
> >>
> >> for i in reverse(somelist):
> >> ...
>
> Gustavo> You can do reverse with [::-1] now.
>
> I don't think that is considered "stable" in the sorting sense. If I
> sort in descending order vs ascending order, they are not mere
> reversals of each other. I may well still want adjacent records whose
> sort keys are identical to remain in the same order.
>
> What will the new reverse=True keyword arg do?
Erm.. what are you talking about!? :-)
I was just saying that his reverse(...) method is completely equivalent
to [::-1] now, so it could safely be implemented as:
reverse = lambda x: x[::-1]
I wasn't trying to mention anything about sort nor keyword arguments
(perhaps I just wasn't the real target of the message!?).
--
Gustavo Niemeyer
http://niemeyer.net
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