Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.python > #52197

Re: Suggestion: PEP for popping slices from lists

Show all headers | View raw

[Multipart message — attachments visible in raw view] - view raw

On Thu, Aug 8, 2013 at 2:32 PM, Neatu Ovidiu <neatuovi@gmail.com> wrote:

> On Thursday, August 8, 2013 4:08:13 PM UTC+3, Nicholas wrote:
> > On Thu, Aug 8, 2013 at 12:50 PM, Neatu Ovidiu <neat...@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...@gmail.com>
> wrote:
> >
> > >
> >
> > > >
> >
> > >
> >
> > > >
> >
> > >
> >
> > > >
> >
> > >
> >
> > > >
> >
> > >
> >
> > > >
> >
> > >
> >
> > > >
> >
> > >
> >
> > > >
> >
> > >
> >
> > > > > But what's your use case?
> >
> > >
> >
> > > >
> >
> > >
> >
> > > > >
> >
> > >
> >
> > > >
> >
> > >
> >
> > > > > Does it occur often enough that you cannot afford a two-liner like
> >
> > >
> >
> > > >
> >
> > >
> >
> > > > I think uses cases are plenty.
> >
> > >
> >
> > > >
> >
> > >
> >
> > > >
> >
> > >
> >
> > > >
> >
> > >
> >
> > > >
> >
> > >
> >
> > > > 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?
> >
> >
> > >
> >
> > > >
> >
> > >
> >
> > > >
> >
> > >
> >
> > > >
> >
> > >
> >
> > > > N.
> >
> > >
> >
> > >
> >
> > >
> >
> > > 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.
>
> You are perfectly right. But I looked at it more like an improvement in
> the style of writing solutions and also a natural option because slices are
> highly present all over in python.
>


I wasn't knocking it.  I was just trying to think it through.

Back to comp.lang.python | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Suggestion: PEP for popping slices from lists Neatu Ovidiu Gabriel <neatuovi@gmail.com> - 2013-08-08 02:45 -0700
  Re: Suggestion: PEP for popping slices from lists Peter Otten <__peter__@web.de> - 2013-08-08 12:07 +0200
    Re: Suggestion: PEP for popping slices from lists Neatu Ovidiu <neatuovi@gmail.com> - 2013-08-08 03:38 -0700
      Re: Suggestion: PEP for popping slices from lists Nicholas Cole <nicholas.cole@gmail.com> - 2013-08-08 12:12 +0100
        Re: Suggestion: PEP for popping slices from lists Neatu Ovidiu <neatuovi@gmail.com> - 2013-08-08 04:40 -0700
          Re: Suggestion: PEP for popping slices from lists Skip Montanaro <skip@pobox.com> - 2013-08-08 09:20 -0500
        Re: Suggestion: PEP for popping slices from lists Neatu Ovidiu <neatuovi@gmail.com> - 2013-08-08 04:44 -0700
          Re: Suggestion: PEP for popping slices from lists Neatu Ovidiu <neatuovi@gmail.com> - 2013-08-08 04:50 -0700
            Re: Suggestion: PEP for popping slices from lists Nicholas Cole <nicholas.cole@gmail.com> - 2013-08-08 14:08 +0100
              Re: Suggestion: PEP for popping slices from lists Neatu Ovidiu <neatuovi@gmail.com> - 2013-08-08 06:32 -0700
                Re: Suggestion: PEP for popping slices from lists Nicholas Cole <nicholas.cole@gmail.com> - 2013-08-08 15:03 +0100
          Re: Suggestion: PEP for popping slices from lists Terry Reedy <tjreedy@udel.edu> - 2013-08-08 16:03 -0400
          Re: Suggestion: PEP for popping slices from lists Joshua Landau <joshua@landau.ws> - 2013-08-08 22:32 +0100
          Re: Suggestion: PEP for popping slices from lists Tim Chase <python.list@tim.thechases.com> - 2013-08-08 16:50 -0500
          Re: Suggestion: PEP for popping slices from lists Terry Reedy <tjreedy@udel.edu> - 2013-08-08 18:10 -0400

csiph-web