Path: csiph.com!usenet.pasdenom.info!aioe.org!news.stack.nl!newsfeed.xs4all.nl!newsfeed4.news.xs4all.nl!xs4all!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 0.005 X-Spam-Evidence: '*H*': 0.99; '*S*': 0.00; 'python,': 0.02; 'incompatible': 0.07; 'consistency': 0.09; 'expected.': 0.09; 'undefined': 0.09; 'cc:addr:python-list': 0.11; 'bug': 0.12; 'jan': 0.12; 'ben,': 0.16; 'buggy': 0.16; 'finney': 0.16; 'imo.': 0.16; 'nan': 0.16; 'rationale': 0.16; 'types,': 0.16; 'exception': 0.16; 'wrote:': 0.18; 'result.': 0.19; 'thu,': 0.19; 'cc:addr:python.org': 0.22; 'question': 0.24; 'cc:2**0': 0.24; 'header:In-Reply-To:1': 0.27; 'url:bugs': 0.29; 'message- id:@mail.gmail.com': 0.30; 'url:mailman': 0.30; 'filed': 0.31; 'subject:numbers': 0.31; 'subject:other': 0.31; 'writes:': 0.31; 'agreed': 0.32; 'url:python': 0.33; 'standards': 0.33; "i'd": 0.34; 'case,': 0.35; 'but': 0.35; 'received:google.com': 0.35; 'there': 0.35; 'crazy': 0.36; 'url:listinfo': 0.36; 'thanks': 0.36; 'url:org': 0.36; 'should': 0.36; 'being': 0.38; 'ben': 0.38; 'pm,': 0.38; 'expect': 0.39; 'enough': 0.39; 'either': 0.39; 'url:mail': 0.40; 'skip:u 10': 0.60; 'dave': 0.60; 'chance': 0.65; 'here': 0.66; 'behavior': 0.77; '2015': 0.84; '\xe2\x80\x9cwe': 0.84; 'angel': 0.91 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc:content-type:content-transfer-encoding; bh=7lieQLH01ia8lZ1WUI38OCiiNt/WmEKvVVbcJIWQw/M=; b=aCShEcpXnOXMovDGlqBi8Iw5PQZBnr9kKPC+jTAxwB5DWxp88gcSkX9ZjlOHjhMFe8 u57wzS0aItx1ga6desnjediFDskCTDWLRJT2Jf+KtX62GmHO4nkFQpF8d2ghiJyoLGxX SBXgPR7hcyizgG/vXZjbIGe4/D5dKEUd+gEZILg9XvTjVL0I4rimFewJoIYVS9HFZNDi NJnbr7tvCucLXOEVFYJmt1gFt96PM5RoYN26GBonidz4B2EV1QmPAOOZaK2Ocfl21y61 4o8JZtynf4DiOo8kbmYVpx4ZDAVMxwg7qWjeqy9/soHEMczO/+JMORM0WZHsn8JwCkIr ZnrA== X-Received: by 10.140.32.166 with SMTP id h35mr21091597qgh.22.1420773252386; Thu, 08 Jan 2015 19:14:12 -0800 (PST) MIME-Version: 1.0 In-Reply-To: <85tx00vend.fsf@benfinney.id.au> References: <54AF405C.6020609@davea.name> <85tx00vend.fsf@benfinney.id.au> From: Devin Jeanpierre Date: Thu, 8 Jan 2015 19:13:32 -0800 Subject: Re: Decimals and other numbers To: Ben Finney Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Cc: "comp.lang.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: 33 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1420773255 news.xs4all.nl 2898 [2001:888:2000:d::a6]:33954 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:83400 Thanks Ben, with your encouragement I have filed http://bugs.python.org/issue23201 -- Devin On Thu, Jan 8, 2015 at 7:03 PM, Ben Finney wro= te: > Dave Angel writes: > >> What you don't say is which behavior you actually expected. Since >> 0**0 is undefined mathematically, I'd expect either an exception or a >> NAN result. > > Do you think that the =E2=80=98int=E2=80=99 and =E2=80=98float=E2=80=99 t= ypes, which do produce a number > result for =E2=80=980 ** 0=E2=80=99, are buggy and should be fixed? > > I think the inconsistency is unnecessarily confusing. Perhaps the > consistency is in standards outside Python, but I think there is cause > here either for a change of behaviour or, if ther eis a good rationale > for the incompatible behaviours, to document the rationale. In either > case, a bug report is warranted IMO. > > -- > \ =E2=80=9CWe are all agreed that your theory is crazy. The question= that | > `\ divides us is whether it is crazy enough to have a chance of | > _o__) being correct.=E2=80=9D =E2=80=94Niels Bohr (to Wolfgang= Pauli), 1958 | > Ben Finney > > -- > https://mail.python.org/mailman/listinfo/python-list