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 0.001 X-Spam-Evidence: '*H*': 1.00; '*S*': 0.00; 'from:addr:yahoo.co.uk': 0.04; 'plenty': 0.07; 'test,': 0.07; 'think,': 0.07; '"if': 0.09; 'ascii': 0.09; 'counting': 0.09; 'lawrence': 0.09; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'subject:trying': 0.09; 'tismer': 0.09; '--------': 0.10; 'runs': 0.10; 'python': 0.11; 'bug': 0.12; '-tkc': 0.16; '127': 0.16; 'devs': 0.16; 'different,': 0.16; 'mardi': 0.16; 'only)': 0.16; 'received:80.91.229.3': 0.16; 'received:plane.gmane.org': 0.16; 'subject:non': 0.16; 'tasks,': 0.16; 'tracker,': 0.16; 'worst': 0.16; 'language': 0.16; 'wrote:': 0.18; 'normally': 0.19; '>>>': 0.22; 'programming': 0.22; 'import': 0.22; 'header:User-Agent:1': 0.23; 'example.': 0.24; 'text,': 0.24; 'unicode': 0.24; 'non': 0.24; 'second': 0.26; 'header:X-Complaints-To:1': 0.27; 'header :In-Reply-To:1': 0.27; '----': 0.29; 'tim': 0.29; 'characters': 0.30; 'posting': 0.31; 'chase': 0.31; 'purely': 0.31; 'supposed': 0.32; 'text': 0.33; 'core': 0.34; 'something': 0.35; 'but': 0.35; 'european': 0.36; 'half': 0.37; 'seconds': 0.37; 'two': 0.37; 'christian': 0.38; 'problems': 0.38; 'awesome': 0.38; 'to:addr :python-list': 0.38; 'fact': 0.38; 'previous': 0.38; 'reported': 0.39; 'to:addr:python.org': 0.39; 'received:org': 0.40; 'world.': 0.61; 'simply': 0.61; 'email addr:gmail.com': 0.63; 'real': 0.63; 'such': 0.63; 'skip:n 10': 0.64; 'provide': 0.64; 'more': 0.64; 'world': 0.66; 'reads': 0.68; 'fact,': 0.69; '"best': 0.84; 'demands.': 0.84; 'greek': 0.84; 'investigated': 0.84; 'mind:': 0.84; 'nonsense.': 0.84; 'sees,': 0.84; 'subject:.. ': 0.84; 'resolved.': 0.91; '2013': 0.98 X-Injected-Via-Gmane: http://gmane.org/ To: python-list@python.org From: Mark Lawrence Subject: Re: trying to strip out non ascii.. or rather convert non ascii Date: Tue, 29 Oct 2013 19:54:08 +0000 References: <526c412a$0$29972$c3e8da3$5496439d@news.astraweb.com> <526f4612$0$6512$c3e8da3$5496439d@news.astraweb.com> <63fa9fcd-6445-41ee-8873-e1ee046e2031@googlegroups.com> <9319e982-4628-4f32-b5cc-60eadca121fc@googlegroups.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Gmane-NNTP-Posting-Host: host-78-147-190-253.as13285.net User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:24.0) Gecko/20100101 Thunderbird/24.0.1 In-Reply-To: <9319e982-4628-4f32-b5cc-60eadca121fc@googlegroups.com> 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: 74 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1383076461 news.xs4all.nl 15999 [2001:888:2000:d::a6]:39321 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:57964 On 29/10/2013 19:16, wxjmfauth@gmail.com wrote: > Le mardi 29 octobre 2013 16:52:49 UTC+1, Tim Chase a écrit : >> On 2013-10-29 08:38, wxjmfauth@gmail.com wrote: >> >>>>>> import timeit >> >>>>>> timeit.timeit("a = 'hundred'; 'x' in a") >> >>> 0.12621293837694095 >> >>>>>> timeit.timeit("a = 'hundreij'; 'x' in a") >> >>> 0.26411553466961735 >> >> >> >> That reads to me as "If things were purely UCS4 internally, Python >> >> would normally take 0.264... seconds to execute this test, but core >> >> devs managed to optimize a particular (lower 127 ASCII characters >> >> only) case so that it runs in less than half the time." >> >> >> >> Is this not what you intended to demonstrate? 'cuz that sounds >> >> like a pretty awesome optimization to me. >> >> >> >> -tkc > > -------- > > That's very naive. In fact, what happens is just the opposite. > The "best case" with the FSR is worst than the "worst case" > without the FSR. > > And this is just without counting the effect that this poor > Python is spending its time in switching from one internal > representation to one another, without forgetting the fact > that this has to be tested every time. > The more unicode manipulations one applies, the more time > it demands. > > Two tasks, that come in my mind: re and normalization. > It's very interesting to observe what happens when one > normalizes latin text and polytonic Greek text, both with > plenty of diactrics. > > ---- > > Something different, based on my previous example. > > What a European user is supposed to think, when she/he > sees, she/he can be "penalized" by such an amount, > simply by using non ascii characters for a product > which is supposed to be "unicode compliant" ? > > jmf > Please provide hard evidence to support your claims or stop posting this ridiculous nonsense. Give us real world problems that can be reported on the bug tracker, investigated and resolved. -- Python is the second best programming language in the world. But the best has yet to be invented. Christian Tismer Mark Lawrence