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Slicing with negative strides

Mark Lawrence breamoreboy at yahoo.co.uk
Tue Oct 29 05:34:56 EDT 2013 
On 29/10/2013 08:53, 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.
>
>>
>>
>> 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?
>

Umpteen options have been put forward.  IMHO the bookies favourite is 
currently being endorsed by Tim Peters and Terry Reedy, yours odds may 
vary :)

-- 
Python is the second best programming language in the world.
But the best has yet to be invented.  Christian Tismer

Mark Lawrence
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