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Groups > comp.lang.python > #15728

Re: Extracting elements over multiple lists?

Date 2011-11-15 13:17 -0500
From Dave Angel <d@davea.name>
Subject Re: Extracting elements over multiple lists?
References <b9e53a75-7490-4b6a-844a-20cfce263939@a12g2000vbz.googlegroups.com> <j995eq$vr9$1@news.univ-fcomte.fr> <cf007146-3a08-44c4-bf01-d1a9253c83e3@o19g2000vbk.googlegroups.com> <4EB828B3.1020509@sequans.com> <5B80DD153D7D744689F57F4FB69AF4740182FE@SCACMX008.exchad.jpmchase.net>
Newsgroups comp.lang.python
Message-ID <mailman.2739.1321381106.27778.python-list@python.org> (permalink)

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On 11/15/2011 12:01 PM, Prasad, Ramit wrote:
> <SNIP>
>> (Peter's "del" solution is quite close, but I find the 'del' statement
>> tricky in python and will mislead many python newcomers)
> Can you expand on why 'del' is "tricky"/misleading?
>
> Ramit
>
a = someexpression...
b = a
....
del a

Does not (necessarily) delete the object that a refers to.  It merely 
deletes the symbol a.



-- 

DaveA

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Thread

Extracting elements over multiple lists? JoeM <josephmeiring@gmail.com> - 2011-11-07 09:12 -0800
  Re: Extracting elements over multiple lists? John Gordon <gordon@panix.com> - 2011-11-07 17:37 +0000
  Re: Extracting elements over multiple lists? Laurent Claessens <moky.math@gmail.com> - 2011-11-07 18:44 +0100
    Re: Extracting elements over multiple lists? JoeM <josephmeiring@gmail.com> - 2011-11-07 10:01 -0800
      Re: Extracting elements over multiple lists? John Gordon <gordon@panix.com> - 2011-11-07 18:22 +0000
        Re: Extracting elements over multiple lists? Terry Reedy <tjreedy@udel.edu> - 2011-11-07 19:06 -0500
      Re: Extracting elements over multiple lists? Peter Otten <__peter__@web.de> - 2011-11-07 19:33 +0100
      Re: Extracting elements over multiple lists? Jean-Michel Pichavant <jeanmichel@sequans.com> - 2011-11-07 19:51 +0100
      Re: Extracting elements over multiple lists? Dave Angel <d@davea.name> - 2011-11-07 15:06 -0500
      Re: Extracting elements over multiple lists? Laurent Claessens <moky.math@gmail.com> - 2011-11-08 08:07 +0100
      RE: Extracting elements over multiple lists? "Prasad, Ramit" <ramit.prasad@jpmorgan.com> - 2011-11-15 17:01 +0000
        Re: Extracting elements over multiple lists? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-11-15 22:21 +0000
      Re: Extracting elements over multiple lists? Dave Angel <d@davea.name> - 2011-11-15 13:17 -0500
      Re: Extracting elements over multiple lists? Chris Angelico <rosuav@gmail.com> - 2011-11-16 06:53 +1100
        Re: Extracting elements over multiple lists? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-11-15 22:25 +0000
          Re: Extracting elements over multiple lists? Chris Angelico <rosuav@gmail.com> - 2011-11-16 09:54 +1100
    Re: Extracting elements over multiple lists? Thomas Rachel <nutznetz-0c1b6768-bfa9-48d5-a470-7603bd3aa915@spamschutz.glglgl.de> - 2011-11-07 19:06 +0100

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