Re: About python while statement and pop()

Newsgroups	comp.lang.python
Date	2014-06-12 11:37 -0700
References	<8d6207ab-b883-4940-8e53-75546a91d4dd@googlegroups.com> <lnclm5$oe4$1@speranza.aioe.org> <mailman.11035.1402592234.18130.python-list@python.org> <lncn90$t1m$1@speranza.aioe.org>
Message-ID	<721c8c8e-3512-42cc-be19-ede489cef7d4@googlegroups.com> (permalink)
Subject	Re: About python while statement and pop()
From	wxjmfauth@gmail.com

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Le jeudi 12 juin 2014 19:16:19 UTC+2, Mark H. Harris a écrit :
> On 6/12/14 11:57 AM, Chris Angelico wrote:
> 
> >>>>> def poplist(L):
> 
> >>          done = False
> 
> >>          while done==False:
> 
> >>
> 
> >>                  yield L[::-1][:1:]
> 
> >>                  L = L[::-1][1::][::-1]
> 
> >>                  if len(L)==0: done=True
> 
> >
> 
> > Why not just "while L"?
> 
> 
> 
> OK,  here it is with Chris' excellent advice:
> 
> 
> 
>  >>> def poplist(L):
> 
> 	while L:
> 
> 		yield L[::-1][:1:]
> 
> 		L = L[::-1][1::][::-1]
> 
> 
> 
> 		
> 
>  >>> L=[1, 2, 3, 4, 5, 6, 7]
> 
>  >>> m=[]
> 
>  >>> pop = poplist(L)
> 
>  >>> for n in poplist(L):
> 
> 	m.append(n[0])
> 
> 
> 
> 	
> 
>  >>> m
> 
> [7, 6, 5, 4, 3, 2, 1]
> 
>  >>>
> 
> 
> 
> 
> 
> ==========  aaaaah  ===================

>>> a = [1, 2, 3, 4, 5, 6, 7]
>>> b = a[:]  # si nécessaire, wenn nötig
>>> b.reverse()
>>> 
>>> a
[1, 2, 3, 4, 5, 6, 7]
>>> b
[7, 6, 5, 4, 3, 2, 1]

jmf

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About python while statement and pop() hito koto <hitokoto2014@gmail.com> - 2014-06-11 20:12 -0700
  Re:About python while statement and pop() Dave Angel <davea@davea.name> - 2014-06-11 22:34 -0500
  Re: About python while statement and pop() Vincent Vande Vyvre <vincent.vandevyvre@swing.be> - 2014-06-12 05:40 +0200
  Re: About python while statement and pop() Chris Angelico <rosuav@gmail.com> - 2014-06-12 13:58 +1000
    Re: About python while statement and pop() hito koto <hitokoto2014@gmail.com> - 2014-06-11 21:56 -0700
      Re: About python while statement and pop() Chris Angelico <rosuav@gmail.com> - 2014-06-12 15:08 +1000
      Re: About python while statement and pop() Steven D'Aprano <steve@pearwood.info> - 2014-06-12 05:43 +0000
        Re: About python while statement and pop() hito koto <hitokoto2014@gmail.com> - 2014-06-11 23:06 -0700
        Re: About python while statement and pop() hito koto <hitokoto2014@gmail.com> - 2014-06-12 00:13 -0700
        Re: About python while statement and pop() hito koto <hitokoto2014@gmail.com> - 2014-06-12 02:51 -0700
  Re: About python while statement and pop() Mark H Harris <harrismh777@gmail.com> - 2014-06-12 11:41 -0500
  Re: About python while statement and pop() Mark H Harris <harrismh777@gmail.com> - 2014-06-12 11:49 -0500
    Re: About python while statement and pop() Marko Rauhamaa <marko@pacujo.net> - 2014-06-12 19:55 +0300
      Re: About python while statement and pop() Mark H Harris <harrismh777@gmail.com> - 2014-06-12 12:07 -0500
    Re: About python while statement and pop() Chris Angelico <rosuav@gmail.com> - 2014-06-13 02:57 +1000
      Re: About python while statement and pop() Mark H Harris <harrismh777@gmail.com> - 2014-06-12 12:10 -0500
      Re: About python while statement and pop() Mark H Harris <harrismh777@gmail.com> - 2014-06-12 12:16 -0500
        Re: About python while statement and pop() wxjmfauth@gmail.com - 2014-06-12 11:37 -0700

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