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Re: Complexity question on Python 3 lists

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Date Wed, 15 Feb 2012 11:11:27 -0800
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Subject Re: Complexity question on Python 3 lists
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On Wed, Feb 15, 2012 at 10:43 AM, Ian Kelly <ian.g.kelly@gmail.com> wrote:
> On Wed, Feb 15, 2012 at 11:20 AM, Franck Ditter <franck@ditter.org> wrote:
<snip>
>> Do lists in Python 3 behave like ArrayList in Java (if the capacity
>> is full, then the array grows by more than 1 element) ?
>
> I believe the behavior in CPython is that if the array is full, the
> capacity is doubled, but I'm not certain, and that would be an
> implementation detail in any case.

It's slightly more complex:
http://hg.python.org/cpython/file/096b31e0f8ea/Objects/listobject.c
"The growth pattern is: 0, 4, 8, 16, 25, 35, 46, 58, 72, 88, …"
    -- list_resize()

Cheers,
Chris

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Thread

Complexity question on Python 3 lists Franck Ditter <franck@ditter.org> - 2012-02-15 19:20 +0100
  Re: Complexity question on Python 3 lists Chris Rebert <clp2@rebertia.com> - 2012-02-15 10:35 -0800
  Re: Complexity question on Python 3 lists Ian Kelly <ian.g.kelly@gmail.com> - 2012-02-15 11:43 -0700
  Re: Complexity question on Python 3 lists Dave Angel <d@davea.name> - 2012-02-15 13:45 -0500
  Re: Complexity question on Python 3 lists Stefan Behnel <stefan_ml@behnel.de> - 2012-02-15 20:01 +0100
  Re: Complexity question on Python 3 lists Chris Rebert <clp2@rebertia.com> - 2012-02-15 11:11 -0800
  Re: Complexity question on Python 3 lists Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2012-02-15 15:28 -0500
  Re: Complexity question on Python 3 lists Terry Reedy <tjreedy@udel.edu> - 2012-02-15 16:41 -0500
  Re: Complexity question on Python 3 lists Ian Kelly <ian.g.kelly@gmail.com> - 2012-02-15 15:54 -0700
  Re: Complexity question on Python 3 lists Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-02-16 00:41 +0000

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