Path: csiph.com!x330-a1.tempe.blueboxinc.net!usenet.pasdenom.info!goblin2!goblin.stu.neva.ru!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 0.006 X-Spam-Evidence: '*H*': 0.99; '*S*': 0.00; 'python?': 0.05; 'from:addr:ethan': 0.09; 'from:addr:stoneleaf.us': 0.09; 'from:name:ethan furman': 0.09; 'message-id:@stoneleaf.us': 0.09; 'received:gator410.hostgator.com': 0.09; '~ethan~': 0.09; 'wrote:': 0.14; 'nans,': 0.16; 'subject:key': 0.16; 'subject:set': 0.16; 'errors,': 0.19; 'header:In-Reply-To:1': 0.21; 'steven': 0.32; 'does': 0.33; 'to:addr:python-list': 0.33; 'there': 0.35; 'header:User-Agent:1': 0.35; "d'aprano": 0.35; 'subject:: ': 0.38; 'to:addr:python.org': 0.39; 'received:websitewelcome.com': 0.67; 'received:69.93': 0.67; 'mandates': 0.84; 'received:gateway14.websitewelcome.com': 0.84 Date: Fri, 03 Jun 2011 23:04:38 -0700 From: Ethan Furman User-Agent: Thunderbird 2.0.0.24 (Windows/20100228) MIME-Version: 1.0 To: python-list@python.org Subject: Re: float("nan") in set or as key References: <7d1ad033-b412-4ccb-8e7f-d5ef151e6804@glegroupsg2000goo.googlegroups.com> <4de9ba8b$0$29996$c3e8da3$5496439d@news.astraweb.com> In-Reply-To: <4de9ba8b$0$29996$c3e8da3$5496439d@news.astraweb.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - gator410.hostgator.com X-AntiAbuse: Original Domain - python.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - stoneleaf.us X-BWhitelist: no X-Source: X-Source-Args: X-Source-Dir: X-Source-Sender: c-67-170-168-84.hsd1.or.comcast.net ([192.168.74.5]) [67.170.168.84]:2434 X-Source-Auth: ethan+stoneleaf.us X-Email-Count: 1 X-Source-Cap: dG9idWs7dG9idWs7Z2F0b3I0MTAuaG9zdGdhdG9yLmNvbQ== 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: 7 NNTP-Posting-Host: 82.94.164.166 X-Trace: 1307167546 news.xs4all.nl 49046 [::ffff:82.94.164.166]:48118 X-Complaints-To: abuse@xs4all.nl Xref: x330-a1.tempe.blueboxinc.net comp.lang.python:6999 Steven D'Aprano wrote: > NANs are not necessarily errors, they're hardly silent, and if you don't > want NANs, the standard mandates that there be a way to turn them off. So how does one turn them off in standard Python? ~Ethan~