Path: csiph.com!fu-berlin.de!uni-berlin.de!not-for-mail From: Antoon Pardon Newsgroups: comp.lang.python Subject: Re: how to convert code that uses cmp to python3 Date: Fri, 8 Apr 2016 16:22:07 +0200 Lines: 30 Message-ID: References: <57064D0D.1030701@rece.vub.ac.be> <5706C961.2000009@rece.vub.ac.be> <57075F43.7060004@rece.vub.ac.be> <85fuuw5ypl.fsf@benfinney.id.au> <5707B2CE.1010407@rece.vub.ac.be> <87bn5kfbsq.fsf@elektro.pacujo.net> <5707BE8F.9050408@rece.vub.ac.be> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Trace: news.uni-berlin.de EnQQwgAiZQXV+BRpYkNScg1F5CUpS+UEBgFEHM/srwsg== Return-Path: X-Original-To: python-list@python.org Delivered-To: python-list@mail.python.org X-Spam-Status: OK 0.019 X-Spam-Evidence: '*H*': 0.96; '*S*': 0.00; 'received:134': 0.05; 'subject:code': 0.07; 'left,': 0.16; 'received:ac.be': 0.16; 'received:io': 0.16; 'received:psf.io': 0.16; 'seconds.': 0.16; 'subject:python3': 0.16; 'traverse': 0.16; 'comparing': 0.18; 'tree': 0.18; 'delta': 0.22; 'keys': 0.22; 'object.': 0.22; 'decide': 0.23; 'this:': 0.23; 'header:In-Reply-To:1': 0.24; 'header:User-Agent:1': 0.26; 'sequence': 0.27; 'looks': 0.29; 'node': 0.29; 'subject:that': 0.29; 'that.': 0.30; 'code': 0.30; 'received:be': 0.30; 'run': 0.33; 'worked': 0.34; 'list': 0.34; 'follows:': 0.35; 'to:addr:python-list': 0.36; 'subject:: ': 0.37; 'doing': 0.38; 'times.': 0.38; 'takes': 0.39; 'to:addr:python.org': 0.40; 'yes': 0.62; 'between': 0.65; 'results.': 0.67; '100': 0.79; 'pardon': 0.84; 'schreef': 0.84 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: ApsQAKO9B1eGuA9G/2dsb2JhbABchFMBM7xGhg0CgX8BAQEBAQFmaA4Bg3IBAQQjVRELGgIFFgsCAgkDAgECAUUTBgICiCOuXY0ohFoBAQgCHnyFJYRLhQuCNIJWAQSYBIFUjDiJK4VijyVig2lqAYYAgzgBAQE User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Icedove/38.7.0 In-Reply-To: <87bn5kfbsq.fsf@elektro.pacujo.net> X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: General discussion list for the Python programming language List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-Mailman-Original-Message-ID: <5707BE8F.9050408@rece.vub.ac.be> X-Mailman-Original-References: <57064D0D.1030701@rece.vub.ac.be> <5706C961.2000009@rece.vub.ac.be> <57075F43.7060004@rece.vub.ac.be> <85fuuw5ypl.fsf@benfinney.id.au> <5707B2CE.1010407@rece.vub.ac.be> <87bn5kfbsq.fsf@elektro.pacujo.net> Xref: csiph.com comp.lang.python:106684 Op 08-04-16 om 15:52 schreef Marko Rauhamaa: > Antoon Pardon : > >> Well having a list of 1000 Sequence like object. Each sequence >> containing between 1 and 100 numbers. Comparing each sequence >> to each other a 100 times. I get the following results. >> >> Doing it as follows: >> seq1 < seq2 >> seq2 < seq1 >> >> takes about 110 seconds. >> >> Doing it like this: >> delta = cmp(seq1, seq2) >> delta < 0 >> delta > 0 >> >> takes about 50 seconds. > Looks like a completely artificial scenario. > It is the code I run when I traverse a tree and decide either to go left, right or have found the node I am looking for. And yes I have worked with keys like that. -- Antoon