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Groups > comp.lang.python > #73199
| References | <8d6207ab-b883-4940-8e53-75546a91d4dd@googlegroups.com> <53992114.3040006@swing.be> |
|---|---|
| Date | 2014-06-12 13:58 +1000 |
| Subject | Re: About python while statement and pop() |
| From | Chris Angelico <rosuav@gmail.com> |
| Newsgroups | comp.lang.python |
| Message-ID | <mailman.11026.1402545515.18130.python-list@python.org> (permalink) |
On Thu, Jun 12, 2014 at 1:40 PM, Vincent Vande Vyvre
<vincent.vandevyvre@swing.be> wrote:
> Le 12/06/2014 05:12, hito koto a écrit :
>
>> Hello,all
>> I'm first time,
>>
>> I want to make a while statement which can function the same x.pop () and
>> without the use of pop、how can i to do?
>>
>> i want to change this is code:
>>
>> def foo(x):
>> y = []
>> while x !=[]:
>> y.append(x.pop())
>> return y
>
> Something like that :
>
> def foo(x):
> return reversed(x)
That doesn't do the same thing, though. Given a list x, the original
function will empty that list and return a new list in reverse order,
but yours will return a reversed iterator over the original list
without changing it. This is more accurate, but still not identical,
and probably not what the OP's teacher is looking for:
def foo(x):
y = x[::-1]
x[:] = []
return y
If the mutation of x is unimportant, it can simply be:
def foo(x):
return x[::-1]
ChrisA
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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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