Path: csiph.com!newsfeed.hal-mli.net!feeder3.hal-mli.net!newsfeed.hal-mli.net!feeder1.hal-mli.net!nntp-feed.chiark.greenend.org.uk!ewrotcd!news.nosignal.org!newsgate.cistron.nl!newsgate.news.xs4all.nl!194.109.133.84.MISMATCH!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 0.002 X-Spam-Evidence: '*H*': 1.00; '*S*': 0.00; 'python': 0.09; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'second.': 0.09; 'terry': 0.09; 'index': 0.13; '11:19': 0.16; 'clock.': 0.16; 'clocks': 0.16; 'privileges.': 0.16; 'received:80.91.229.3': 0.16; 'received:plane.gmane.org': 0.16; 'reedy': 0.16; 'set,': 0.16; 'system-wide': 0.16; 'utc': 0.16; 'wrote:': 0.17; 'specify': 0.17; 'jan': 0.18; 'systems.': 0.18; 'appropriate': 0.20; 'python?': 0.20; 'suggested': 0.20; 'clock': 0.22; 'closely': 0.22; 'specified': 0.23; 'seems': 0.23; 'idea': 0.24; 'second': 0.24; 'machine': 0.24; 'header:In-Reply-To:1': 0.25; 'header:User- Agent:1': 0.26; 'setting': 0.26; 'skip:" 20': 0.26; 'am,': 0.27; 'module.': 0.27; 'header:X-Complaints-To:1': 0.28; 'chris': 0.28; "i'm": 0.29; 'running': 0.32; 'real-time': 0.33; 'shift': 0.33; 'to:addr:python-list': 0.33; 'version': 0.34; 'needed': 0.35; 'there': 0.35; 'received:org': 0.36; 'but': 0.36; 'should': 0.36; 'virtual': 0.37; 'subject:: ': 0.38; 'mean': 0.38; 'some': 0.38; 'to:addr:python.org': 0.39; 'header:Received:5': 0.40; 'your': 0.60; 'lost': 0.60; 'receive': 0.71; 'hoping': 0.72; 'special': 0.73; 'manual,': 0.84; 'milliseconds': 0.84; 'received:fios.verizon.net': 0.84; 'time)': 0.91 X-Injected-Via-Gmane: http://gmane.org/ To: python-list@python.org From: Terry Reedy Subject: Re: datetime Date: Thu, 13 Sep 2012 14:07:34 -0400 References: Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Gmane-NNTP-Posting-Host: pool-173-75-251-66.phlapa.fios.verizon.net User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:15.0) Gecko/20120824 Thunderbird/15.0 In-Reply-To: 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: 44 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1347559693 news.xs4all.nl 6942 [2001:888:2000:d::a6]:40515 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:29061 On 9/13/2012 11:19 AM, Max wrote: > How do I set the time in Python? If you look up 'time' in the index of the current manual, it directs you to the time module. "time.clock_settime(clk_id, time) Set the time of the specified clock clk_id. Availability: Unix. New in version 3.3." You did not specify *which* time to set, but ... "time.CLOCK_REALTIME System-wide real-time clock. Setting this clock requires appropriate privileges. Availability: Unix. New in version 3.3." Chris already suggested an approach for changing your process's idea of time. However, setting time.timezone seems to have no effect > Also, is there any *direct* way to shift it? If you mean time.clock_shift(clk_id, shift_seconds), no. time.clock_settime(clk_id, time.clock_gettime(clk_id) + delta_seconds) > Note that any "indirect" methods may need complicated ways to keep > track of the milliseconds lost while running them. Whay would a millisecond matter? System clocks are never synchronized to official UTC time that closely without special hardware to receive time broadcasts. > It even took around one > second in some virtual machine guest systems. So I'm hoping Python happens to > have the magic needed to do the job for me. The above should be well under a second. -- Terry Jan Reedy