Slicing with negative strides

Terry Reedy tjreedy at udel.edu
Tue Oct 29 06:21:15 EDT 2013


On 10/29/2013 4:53 AM, Duncan Booth wrote:
> 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.

The idea is that one would not have to reverse 2 and 15 to get a 
non-empty sequence.

-- 
Terry Jan Reedy




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