Path: csiph.com!fu-berlin.de!uni-berlin.de!not-for-mail From: Tim Chase Newsgroups: comp.lang.python Subject: Re: new to python, help please !! Date: Thu, 12 Nov 2015 09:00:58 -0600 Lines: 21 Message-ID: References: <93aef8e5-3d6f-41f4-a625-cd3c2007686e@googlegroups.com> <20151111110655.7293d3b7@bigbox.christie.dr> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Trace: news.uni-berlin.de lty7uMwuuoeyYPV/MId5tARI16D1vx7WpBJ6SydbSecA== Return-Path: X-Original-To: python-list@python.org Delivered-To: python-list@mail.python.org X-Spam-Status: OK 0.001 X-Spam-Evidence: '*H*': 1.00; '*S*': 0.00; 'prefix': 0.07; 'subject:help': 0.07; 'cc:addr:python-list': 0.09; 'chunks': 0.09; 'yeah,': 0.09; 'python': 0.10; 'files.': 0.13; 'subject:python': 0.14; '-tkc': 0.16; 'b):': 0.16; 'from:addr:python.list': 0.16; 'from:addr:tim.thechases.com': 0.16; 'from:name:tim chase': 0.16; 'received:io': 0.16; 'received:psf.io': 0.16; 'to:addr:web.de': 0.16; 'wrote:': 0.16; 'later': 0.16; 'detect': 0.18; 'cc:2**0': 0.20; 'cc:addr:python.org': 0.20; 'posted': 0.21; 'cc:no real name:2**0': 0.22; 'tim': 0.24; 'header:In-Reply-To:1': 0.24; 'compare': 0.27; 'chase': 0.29; 'noticed': 0.32; 'open': 0.33; 'file': 0.34; 'subject:please': 0.35; 'but': 0.36; 'skip:i 20': 0.36; 'should': 0.36; 'instead': 0.36; 'lines': 0.36; 'subject:: ': 0.37; 'received:10': 0.37; 'charset:us-ascii': 0.37; 'version': 0.38; 'files': 0.38; 'or,': 0.38; 'received:50': 0.66; 'difference.': 0.84; 'otten': 0.84 X-Sender-Id: wwwh|x-authuser|tim@thechases.com X-Sender-Id: wwwh|x-authuser|tim@thechases.com X-MC-Relay: Neutral X-MailChannels-SenderId: wwwh|x-authuser|tim@thechases.com X-MailChannels-Auth-Id: wwwh X-MC-Loop-Signature: 1447340545664:2000846442 X-MC-Ingress-Time: 1447340545664 In-Reply-To: X-Mailer: Claws Mail 3.11.1 (GTK+ 2.24.25; x86_64-pc-linux-gnu) X-AuthUser: tim@thechases.com X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.20+ Precedence: list List-Id: General discussion list for the Python programming language List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Xref: csiph.com comp.lang.python:98699 On 2015-11-12 15:56, Peter Otten wrote: > Tim Chase wrote: > > > with open("file1.md5") as a, open("file2.md5") as b: > > for s1, s2 in zip(a, b): > > if s1 != s2: > > print("Files differ") > > Note that this will not detect extra lines in one of the files. > I recommend that you use itertools.zip_longest (izip_longest in > Python 2) instead of the built-in zip(). Yeah, I noticed that after pushing but then posted a later version that just read chunks of the file which should catch that file-size difference. Or, as in that other message, prefix it with an fstat() check to compare file-sizes so that you don't even have to open the files if the sizes differ. -tkc