Path: csiph.com!x330-a1.tempe.blueboxinc.net!usenet.pasdenom.info!gegeweb.42!gegeweb.eu!nntpfeed.proxad.net!proxad.net!feeder1-2.proxad.net!news.wiretrip.org!newsfeed.xs4all.nl!newsfeed5.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 0.000 X-Spam-Evidence: '*H*': 1.00; '*S*': 0.00; 'received:verizon.net': 0.07; 'subject:when': 0.07; 'terry': 0.07; 'messing': 0.09; 'omit': 0.09; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:80.91.229.12': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'received:lo.gmane.org': 0.09; 'runtime': 0.09; 'settings,': 0.09; 'reedy': 0.16; 'subject:builtin': 0.16; 'suppressed.': 0.16; 'wrote:': 0.16; 'jan': 0.19; 'header:In- Reply-To:1': 0.22; 'wonder': 0.23; 'checks,': 0.23; 'pm,': 0.24; 'subject:?': 0.31; 'to:addr:python-list': 0.33; 'header:User- Agent:1': 0.34; 'things': 0.34; 'header:X-Complaints-To:1': 0.35; 'but': 0.37; 'could': 0.38; 'received:org': 0.38; 'subject:: ': 0.39; 'header:Mime-Version:1': 0.39; "there's": 0.39; 'to:addr:python.org': 0.39; 'cost': 0.65 X-Injected-Via-Gmane: http://gmane.org/ To: python-list@python.org From: Terry Reedy Subject: Re: Why no warnings when re-assigning builtin names? Date: Tue, 16 Aug 2011 19:32:36 -0400 References: <4e49c89a$0$30001$c3e8da3$5496439d@news.astraweb.com> <4e49fcd7$0$29974$c3e8da3$5496439d@news.astraweb.com> <2A3EB048-1F10-46E8-973F-9BBD303E7B9F@semanchuk.com> <4E4A8F94.50706@stoneleaf.us> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Gmane-NNTP-Posting-Host: pool-74-109-121-73.phlapa.fios.verizon.net User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:6.0) Gecko/20110812 Thunderbird/6.0 In-Reply-To: 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: 13 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1313537709 news.xs4all.nl 23893 [2001:888:2000:d::a6]:52019 X-Complaints-To: abuse@xs4all.nl Xref: x330-a1.tempe.blueboxinc.net comp.lang.python:11622 On 8/16/2011 2:56 PM, Seebs wrote: > I wonder whether there's a way to mitigate the cost of these things by > messing with -W settings, such that runtime that wants to be fast can > omit the checks, but the default could still be to, well, prevent likely > errors. Warning messages have a cost even if suppressed. -- Terry Jan Reedy