Suggestion: PEP for popping slices from lists

[Nicholas Cole]

On Thu, Aug 8, 2013 at 12:50 PM, Neatu Ovidiu <neatuovi at gmail.com> wrote:

> On Thursday, August 8, 2013 2:44:05 PM UTC+3, Neatu Ovidiu wrote:
> > On Thursday, August 8, 2013 2:12:53 PM UTC+3, Nicholas wrote:
> >
> > > On Thu, Aug 8, 2013 at 11:38 AM, Neatu Ovidiu <neat... at gmail.com>
> wrote:
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> > > > But what's your use case?
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> > > > Does it occur often enough that you cannot afford a two-liner like
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> > > I think uses cases are plenty.
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> > > The possible cases I can think of would be better served with list
> comprehensions (what you seem to want is to create lists based on other
> lists) - but maybe I'm missing something.  Could we have one example?
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> > > N.
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> > This can be useful for doing all kinds of basic stuff. For example if
> you wanted to take 4 items of a list at at a time, do something with them
> and then update the list.
> >
> >
> >
> > jobs = ['job1', 'job2', 'job3', 'job4', 'job5', 'job6', 'job7', 'job8',
> 'job9', 'job10']
> >
> > while jobs:
> >
> >     print(jobs.pop_slice(0,4))
> >
> >
> >
> > should output
> >
> >
> >
> > 'job1', 'job2', 'job3', 'job4'
> >
> > 'job5', 'job6', 'job7', 'job8'
> >
> > 'job9', 'job10'
>
> The idea "popped" in my mind while thinking about this question.
>
> http://stackoverflow.com/questions/18121416/right-split-a-string-into-groups-of-3/18122084
> I founded the list comprehensions solutions kind of cumbersome and thought
> that there should be a simple way to do this kind of stuff.
> --
> http://mail.python.org/mailman/listinfo/python-list
>


Still seems a bit like a solution looking for a problem to me.

Why would you want to take four items at a time for a job from an arbitrary
part of a list?  I agree splitting a string into groups of three looks a
bit cumbersome in the example you've given, but a generator could be
written quite easily, and would almost certainly be quicker than trying to
alter the list in place.

Best wishes,

N.
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