Path: csiph.com!x330-a1.tempe.blueboxinc.net!usenet.pasdenom.info!gegeweb.org!de-l.enfer-du-nord.net!feeder2.enfer-du-nord.net!tudelft.nl!txtfeed1.tudelft.nl!multikabel.net!newsfeed20.multikabel.net!news2.euro.net!newsgate.cistron.nl!newsgate.news.xs4all.nl!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 0.012 X-Spam-Evidence: '*H*': 0.98; '*S*': 0.00; 'subject:Python': 0.05; 'python': 0.08; 'fred': 0.09; 'question?': 0.09; 'code?': 0.16; 'iterates': 0.16; 'received:10.2': 0.16; 'subject: \n ': 0.16; 'subject:engine': 0.16; 'subject:find': 0.16; "aren't": 0.21; 'header:In-Reply-To:1': 0.22; "shouldn't": 0.23; 'skip:[ 10': 0.27; 'lines': 0.30; 'subject:?': 0.30; '---': 0.31; 'correct': 0.31; 'does': 0.32; 'changes': 0.32; 'header:User-Agent:1': 0.33; 'to:addr:python-list': 0.33; 'it?': 0.33; 'file': 0.35; 'passed': 0.37; 'received:org': 0.37; 'subject:: ': 0.39; 'to:addr:python.org': 0.40; 'your': 0.61; 'presented': 0.62; 'choice.': 0.64; 'so:': 0.84 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=modelnine.org; s=modelnine1012; t=1327254740; bh=cFu9TWDyPNMvpGBSBMMI9XIakFLNPQMNSI63khlf2PM=; h=Message-ID:Date:From:MIME-Version:To:Subject:References: In-Reply-To:Content-Type:Content-Transfer-Encoding; b=fP4kUuZUeOdUutTdd6N2Koh8T9u8kIrJAZu/707KGg1rEdWNR2i7L88JB6g+iQJrv e8jU0PjroBmVZtmhmdq/J6S4O0LoX9NDi/ZS9aoZeDCYTJglhoQJcbxMCINsPXQVoT 82/souCTSwvevrXbym6HGd3oH4Yg0c+kc1HTDDOg= Date: Sun, 22 Jan 2012 18:52:21 +0100 From: Heiko Wundram User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:10.0) Gecko/20120118 Thunderbird/10.0 MIME-Version: 1.0 To: python-list@python.org Subject: Re: Looking under Python's hood: Will we find a high performance or clunky engine? References: <3c0bb3d0-6b80-44ec-848a-7296d526c047@t8g2000yqg.googlegroups.com> In-Reply-To: <3c0bb3d0-6b80-44ec-848a-7296d526c047@t8g2000yqg.googlegroups.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.12 Precedence: list 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: 19 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1327254749 news.xs4all.nl 6895 [2001:888:2000:d::a6]:44040 X-Complaints-To: abuse@xs4all.nl Xref: x330-a1.tempe.blueboxinc.net comp.lang.python:19226 Am 22.01.2012 16:50, schrieb Rick Johnson: > What does Python do when presented with this code? > > py> [line.strip('\n') for line in f.readlines()] > > If Python reads all the file lines first and THEN iterates AGAIN to do > the strip; we are driving a Fred flintstone mobile. If however Python > strips each line of the lines passed into readlines in one fell swoop, > we made the correct choice. > > Which is it Pythonistas? Which is it? You aren't one (considering how vocal you are in arguing for changes to the language)? So: shouldn't you be able to answer your own question? -- --- Heiko.