Path: csiph.com!fu-berlin.de!uni-berlin.de!not-for-mail From: Mark Lawrence Newsgroups: comp.lang.python Subject: Re: The Cost of Dynamism (was Re: Pyhon 2.x or 3.x, which is faster?) Date: Mon, 21 Mar 2016 01:28:26 +0000 Lines: 47 Message-ID: References: <56e44258$0$1598$c3e8da3$5496439d@news.astraweb.com> <8737rvxs89.fsf@elektro.pacujo.net> <56e7483d$0$1608$c3e8da3$5496439d@news.astraweb.com> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit X-Trace: news.uni-berlin.de Q6dn7zOfNZPvga5QIlHuUQtFMY7VZKlQG7dniIdbDNZg== 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; 'python,': 0.02; 'else:': 0.03; 'elif': 0.04; 'from:addr:yahoo.co.uk': 0.05; "'a'": 0.07; 'bits': 0.07; '22,': 0.09; 'non-ascii': 0.09; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'subject:which': 0.09; "'0'": 0.16; 'better:': 0.16; 'instead:': 0.16; 'received:80.91.229.3': 0.16; 'received:io': 0.16; 'received:plane.gmane.org': 0.16; 'received:psf.io': 0.16; 'subject:?)': 0.16; 'wrote:': 0.16; 'language': 0.19; 'lawrence': 0.22; 'header:In-Reply-To:1': 0.24; 'header:User-Agent:1': 0.26; 'header:X-Complaints-To:1': 0.26; 'switch': 0.27; 'filled': 0.30; 'up.': 0.32; 'language.': 0.32; "d'aprano": 0.33; 'steven': 0.33; 'correctly': 0.34; 'but': 0.36; 'lines': 0.36; 'to:addr:python-list': 0.36; 'subject:: ': 0.37; 'received:org': 0.37; 'along': 0.39; 'well.': 0.40; 'to:addr:python.org': 0.40; 'mark': 0.40; 'subject:The': 0.61; 'charset:windows-1252': 0.62; 'more': 0.63; 'here:': 0.63; 'our': 0.64; 'upper': 0.76; 'saw': 0.77; 'promptly': 0.84; 'pythonistas,': 0.84; 'realistic': 0.93 X-Injected-Via-Gmane: http://gmane.org/ X-Gmane-NNTP-Posting-Host: 80.234.129.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.7.0 In-Reply-To: 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: , Xref: csiph.com comp.lang.python:105324 On 21/03/2016 01:15, BartC wrote: > On 15/03/2016 00:25, BartC wrote: > > On 14/03/2016 23:24, Steven D'Aprano wrote: > > >> Try this instead: > >> > >> c = chr(c) > >> if 'A' <= c <= 'Z': > >> upper += 1 > >> elif 'a' <= c <= 'z': > >> lower += 1 > >> elif '0' <= c <= '9': > >> digits += 1 > >> else: > >> other += 1 > >> > >> But even better: > >> > >> if c.isupper(): > >> upper += 1 > >> elif c islower(): > >> lower += 1 > >> elif c.isdigit(): > >> digits += 1 > >> else: > >> other += 1 > >> > >> which will work correctly for non-ASCII characters as well. > > > > Yes, but now you've destroyed my example! > > > > A more realistic use of switch is shown below [not Python]. > > A tokeniser along those lines in Python, with most of the bits filled > in, is here: > > http://pastebin.com/dtM8WnFZ > I got to line 22, saw the bare except, and promptly gave up. -- My fellow Pythonistas, ask not what our language can do for you, ask what you can do for our language. Mark Lawrence