Path: csiph.com!usenet.pasdenom.info!weretis.net!feeder4.news.weretis.net!ecngs!feeder2.ecngs.de!newsfeed.freenet.ag!news2.euro.net!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 0.001 X-Spam-Evidence: '*H*': 1.00; '*S*': 0.00; 'true,': 0.04; 'false,': 0.07; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'bug': 0.10; 'def': 0.10; '2.7': 0.13; 'message-id:@dough.gmane.org': 0.16; 'received:80.91.229.3': 0.16; 'received:plane.gmane.org': 0.16; 'utc': 0.16; 'module': 0.19; 'all,': 0.21; 'import': 0.21; '3.2': 0.22; "python's": 0.23; 'seems': 0.23; 'tried': 0.25; 'header:In- Reply-To:1': 0.25; 'header:User-Agent:1': 0.26; 'module.': 0.27; 'subject:skip:d 10': 0.27; 'header:X-Complaints-To:1': 0.28; 'all.': 0.28; 'assert': 0.29; 'class': 0.29; 'error': 0.30; 'zero': 0.33; 'to:addr:python-list': 0.33; 'skip:d 20': 0.34; 'changed': 0.34; 'received:org': 0.36; 'but': 0.36; 'does': 0.37; 'subject:: ': 0.38; 'to:addr:python.org': 0.39; 'skip:" 10': 0.40; 'header:Received:5': 0.40; 'think': 0.40; 'skip:u 10': 0.60; 'hour': 0.69; 'received:89': 0.86 X-Injected-Via-Gmane: http://gmane.org/ To: python-list@python.org From: Damjan Subject: Re: Confusing datetime.datetime Date: Fri, 06 Jul 2012 04:05:38 +0200 References: <4ff63f58$0$29988$c3e8da3$5496439d@news.astraweb.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Gmane-NNTP-Posting-Host: 89.205.110.217 User-Agent: Mozilla/5.0 (X11; Linux i686; rv:13.0) Gecko/20120616 Thunderbird/13.0.1 In-Reply-To: <4ff63f58$0$29988$c3e8da3$5496439d@news.astraweb.com> 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: 33 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1341540292 news.xs4all.nl 6910 [2001:888:2000:d::a6]:44461 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:24951 > from datetime import datetime, timedelta, tzinfo > ZERO = timedelta(0) > HOUR = timedelta(hours=1) > > class UTC(tzinfo): > def utcoffset(self, dt): > return ZERO > def tzname(self, dt): > return "UTC" > def dst(self, dt): > return ZERO > > utc = UTC() > t1 = datetime.now(tz=utc) > t2 = datetime(t1.year, t1.month, t1.day, tzinfo=utc) > assert t1.tzinfo == t2.tzinfo > > > No assertion error at all. > > This makes me think that the "retardation" as you put it is not in > Python's datetime module at all, but in pytz. > > What does TZ == TZ give? If it returns False, I recommend you report it > as a bug against the pytz module. It returns True, so it seems to be changed in the datetime object?? I tried both 2.7 and 3.2 -- damjan