[Python-3000] Making more effective use of slice objects in Py3k

Delaney, Timothy (Tim) tdelaney at avaya.com
Mon Aug 28 02:24:41 CEST 2006

Jim Jewett wrote:

> On 8/27/06, Delaney, Timothy (Tim) <tdelaney at avaya.com> wrote:
>> Jim Jewett wrote:
>>>     s[start:stop].find(prefix)
>> No matter what, I really think the obj[start:stop:step]
>> syntax needs to be consistent in its behaviour - either
>> returning a copy or a view -
> Does it still matter if we're looking only at immutable sequences,
> such as text? 

Actually, yes. I think it should be an explicit operation to say "I'm
taking a small view of this large string, which will result in the large
string existing until the view goes away".

Currently the way to do that is to have a method. I'm simply proposing
that we reserve syntax that is currently not used to prevent it from
being used for another, less appropriate usage. It may never be used at

Tim Delaney

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