Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!us.feeder.erje.net!news2.arglkargh.de!diablo1.news.osn.de!news.osn.de!diablo2.news.osn.de!news.tele.dk!news.tele.dk!small.news.tele.dk!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 0.020 X-Spam-Evidence: '*H*': 0.96; '*S*': 0.00; 'skip:[ 20': 0.04; 'subject:bug': 0.07; 'cc:addr:python-list': 0.11; '3],': 0.16; 'from:addr:rosuav': 0.16; 'from:name:chris angelico': 0.16; 'wrote:': 0.18; '>>>': 0.22; 'cc:addr:python.org': 0.22; 'cc:2**0': 0.24; 'header:In-Reply-To:1': 0.27; 'generally': 0.29; 'message-id:@mail.gmail.com': 0.30; '(which': 0.31; '>>>>': 0.31; 'received:google.com': 0.35; 'surely': 0.36; 'subject:?': 0.36; 'should': 0.36; 'being': 0.38; 'skip:[ 10': 0.38; 'pm,': 0.38; 'anything': 0.39; 'more': 0.64; 'to:none': 0.92 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:cc :content-type; bh=56Z6u/gJuGUT1VR/LDHGAX39D0UrcWe5x8wnmDxuRzo=; b=Ukt8kPb3WL84WcE/0L1dT7NZxaHX4+wq5a0NO3GyhpHE3qxImWqZ76OW3tgIrMb+Hh thfy5FRVsw9F7Cx1CqjP7rtUdXgA1HCZZH0pdaukiQQVLtqywBncAbmxm97d6N3SM9V+ JgfYaA21b5gGZcdhCqoeo8YvqUGONpGlpciWE6oe4TpCe7YYYpDUvDIm0LF4hbr6Fwju 7bZZDKJWatip9nRfL7Ue9jBvyGN1j+NPfrJ7CvQU8hp13gWxvEX5NvzSBpxO7KcB9qxs DV7qDACHr1p0DeM/f9Ry3S5YpexTYOYj8PiOSx03o5aBZNaV4StaSLhU7O73XcKbSk2q zIww== MIME-Version: 1.0 X-Received: by 10.42.188.77 with SMTP id cz13mr781965icb.19.1414459547196; Mon, 27 Oct 2014 18:25:47 -0700 (PDT) In-Reply-To: References: Date: Tue, 28 Oct 2014 12:25:47 +1100 Subject: Re: A bug? From: Chris Angelico Cc: "python-list@python.org" Content-Type: text/plain; charset=UTF-8 X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.15 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: 15 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1414459556 news.xs4all.nl 2839 [2001:888:2000:d::a6]:53609 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:79815 On Tue, Oct 28, 2014 at 12:12 PM, Rustom Mody wrote: > More generally for d being a 2-D reshape of dd (which may be anything > as long as the size matches) > >>>> dd = [1,2,3,4,5,6,7,8,9,10,11,12] >>>> d=[[dd[i*3+j] for j in range(3)] for i in range(4)] >>>> d > [[1, 2, 3], [4, 5, 6], [7, 8, 9], [10, 11, 12]] The inner comprehension should surely be a slice: >>> [dd[i*3:i*3+3] for i in range(4)] [[1, 2, 3], [4, 5, 6], [7, 8, 9], [10, 11, 12]] ChrisA