Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!us.feeder.erje.net!newsfeed.xs4all.nl!newsfeed4.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 0.008 X-Spam-Evidence: '*H*': 0.98; '*S*': 0.00; 'e.g.,': 0.09; 'fashion.': 0.09; 'parsing': 0.09; 'subject:number': 0.09; 'cc:addr:python- list': 0.11; 'recognised': 0.16; 'subject:CSV': 0.16; 'weird': 0.16; 'wrote:': 0.18; 'not,': 0.20; 'feb': 0.22; '>>>': 0.22; 'cc:addr:python.org': 0.22; 'either.': 0.24; 'format,': 0.24; "shouldn't": 0.24; 'skip': 0.24; 'cc:2**0': 0.24; 'header:In- Reply-To:1': 0.27; 'am,': 0.29; "doesn't": 0.30; 'message- id:@mail.gmail.com': 0.30; "skip:' 10": 0.31; '"",': 0.31; 'possible.': 0.35; 'but': 0.35; 'received:google.com': 0.35; 'there': 0.35; 'should': 0.36; 'performance': 0.37; 'though,': 0.39; 'frank': 0.68; 'special': 0.74; '2015': 0.84 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:to :cc:content-type; bh=x/VFVkYWaajXoAUzuoK4ajbK9F9JBS7+GBAbpW06Oj8=; b=iiRRI3KwX4Vt93zfKK8pLULeEdDHhwaoHUYch1pJMCmXTzJUxeo+HKPzKmJ3W7AdUB E2VbR0P5eN9UevAXOQOTFBvo5IBA7ixrfE/5MbDi6KElYcaZOcpydZn7/NB7rO+zLIMi r5mVvfR5hxtbCF+RPpDErXuAcgBEmJC3hirrA6/T2/ZpAs9iExpo324xmjdBQjWqYlpZ yx2751dytOqzbdtUrgZmzQvTBGLNYeZtkaO3Tegsv8kZEa5NO4L/2iNmodb3aYQd3Oyb YGTCWAAGk1RdlVgGcriya19Rn9BiGZLcB9/XY991O3N5/OGWIc1Jw1mUYM8OJVBO8uQl lXJQ== MIME-Version: 1.0 X-Received: by 10.182.251.138 with SMTP id zk10mr9391361obc.72.1422798622750; Sun, 01 Feb 2015 05:50:22 -0800 (PST) In-Reply-To: References: Date: Sun, 1 Feb 2015 07:50:22 -0600 Subject: Re: CSV and number formats From: Skip Montanaro To: Frank Millman Content-Type: text/plain; charset=UTF-8 Cc: Python 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: 23 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1422798626 news.xs4all.nl 2904 [2001:888:2000:d::a6]:39203 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:84994 On Sun, Feb 1, 2015 at 12:45 AM, Frank Millman wrote: > Is this a recognised format, and is there a standard way of parsing it? If > not, I will have to special-case it, but I would prefer to avoid that if > possible. Doesn't look "standard" to me in any fashion. You shouldn't need to special case it though, just s = re.sub("^[+]0*", "", s) e.g., >>> s = '+00000-21.45' >>> t = '+0000021.45' >>> re.sub("^[+]0*", "", s) '-21.45' >>> re.sub("^[+]0*", "", t) '21.45' That should work on all numbers, not just the weird one. Unless you have bazillions of numbers, it shouldn't be a performance hit either. Skip