Slicing with negative strides
Duncan Booth
duncan.booth at invalid.invalid
Tue Oct 29 04:53:08 EDT 2013
Steven D'Aprano <steve at pearwood.info> wrote:
> Does anyone here use slices (or range/xrange) with negative strides
> other than -1?
>
> E.g. sequence[2:15:-3]
With any negative stride your example is just the empty sequence.
>
>
> If so, there is a discussion (long, long, looooooong discussion) on
> the python-ideas mailing list, debating whether or not to deprecate or
> change the behaviour of slicing with negative strides. So if you care
> about the current behaviour, now is the time to stand up and be
> counted.
>
> (Standing up *here* is fine, don't feel that you have to join yet
> another list.)
>
For those of us that don't really want to join another mailing list, could
you summarise what change is being proposed?
--
Duncan Booth http://kupuguy.blogspot.com
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