Path: csiph.com!x330-a1.tempe.blueboxinc.net!usenet.pasdenom.info!gegeweb.org!de-l.enfer-du-nord.net!feeder1.enfer-du-nord.net!newsfeed.eweka.nl!eweka.nl!feeder3.eweka.nl!newsfeed.xs4all.nl!newsfeed6.news.xs4all.nl!xs4all!post.news.xs4all.nl!not-for-mail Return-Path: X-Original-To: python-list@python.org Delivered-To: python-list@mail.python.org X-Spam-Status: OK 0.060 X-Spam-Evidence: '*H*': 0.88; '*S*': 0.00; 'python': 0.08; 'deletes': 0.09; 'subject:Extracting': 0.09; 'cc:addr:python-list': 0.15; '"del"': 0.16; 'received:192.168.1.104': 0.16; 'wrote:': 0.18; 'to:2**1': 0.19; 'refers': 0.23; 'header:In-Reply-To:1': 0.23; 'statement': 0.25; 'cc:addr:python.org': 0.29; 'subject:?': 0.31; 'pm,': 0.31; 'does': 0.32; 'quite': 0.32; 'header:User-Agent:1': 0.33; 'symbol': 0.34; 'object': 0.35; 'skip:" 20': 0.35; 'subject:lists': 0.36; 'cc:2**1': 0.36; 'but': 0.37; 'received:192': 0.38; 'why': 0.39; 'subject:: ': 0.39; 'delete': 0.40; 'header:Reply-To:1': 0.70; 'reply-to:no real name:2**0': 0.71; '12:01': 0.84; 'subject:over': 0.84; 'tricky': 0.84 Date: Tue, 15 Nov 2011 13:17:48 -0500 From: Dave Angel User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.23) Gecko/20110922 Thunderbird/3.1.15 MIME-Version: 1.0 To: "Prasad, Ramit" Subject: Re: Extracting elements over multiple lists? References: <4EB828B3.1020509@sequans.com> <5B80DD153D7D744689F57F4FB69AF4740182FE@SCACMX008.exchad.jpmchase.net> In-Reply-To: <5B80DD153D7D744689F57F4FB69AF4740182FE@SCACMX008.exchad.jpmchase.net> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Provags-ID: V02:K0:4jKC34VhAHjCjlYiANx6dMkzXKiKPQrSVYuloCwKGED SJnZ7Uc/m7qmeaqT+d9nIphISIhr8q/d10Wt7apHo9TjuQsCCT WUOZ7UGXS9ZygPD7BYTu1EUG3ja/dZGsxW3M4EyTPlr6xLtD/K Li9iplUBHmTKp4KajyKhxnGHs+wLYwCeN85plH/dD4NXQKP0zE Y53OpO4mFn2og4EEbxigx0JbJw+a54Z2P9l8hch6lC34kI/70l PRsFF6siua1fR/BiZSR9TOZIXCMeIC4+QwgDnUAosxFSx/ShoU TZREjbJUtcTO4fD9tC2l5vzLEdRXDOlJ6EaKe93AvDigDWr0A= = Cc: "python-list@python.org" X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.12 Precedence: list Reply-To: d@davea.name List-Id: General discussion list for the Python programming language List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Newsgroups: comp.lang.python Message-ID: Lines: 22 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1321381106 news.xs4all.nl 6882 [2001:888:2000:d::a6]:42707 X-Complaints-To: abuse@xs4all.nl Xref: x330-a1.tempe.blueboxinc.net comp.lang.python:15728 On 11/15/2011 12:01 PM, Prasad, Ramit wrote: > >> (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