Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!eu.feeder.erje.net!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 0.044 X-Spam-Evidence: '*H*': 0.92; '*S*': 0.00; 'algorithm': 0.04; 'iterate': 0.09; 'times,': 0.14; 'iteration.': 0.16; 'mark.': 0.16; 're-written': 0.16; 'language': 0.16; 'wrote:': 0.18; 'wed,': 0.18; 'header:In-Reply-To:1': 0.27; "doesn't": 0.30; 'message-id:@mail.gmail.com': 0.30; 'complete,': 0.31; "d'aprano": 0.31; 'steven': 0.31; 'received:209.85': 0.35; 'received:209.85.220': 0.35; 'but': 0.35; 'received:google.com': 0.35; 'complete.': 0.36; 'received:209': 0.37; 'to:addr:python- list': 0.38; 'pm,': 0.38; 'to:addr:python.org': 0.39; "you're": 0.61; '"recursive': 0.84; 'confusing': 0.84; '2013': 0.98 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=x-received:mime-version:in-reply-to:references:from:date:message-id :subject:to:content-type; bh=0Ptc+eXaJKvxYq7ZKTqyzvdW6xmQUWmcy+yqtbHKHHc=; b=lGBhZj3v1aAWdcSFZkF+TwsjhPTS5mhzD7mWDi3ruCC2/BPY9lJSSW8seWzWCMSzxE cIHWnBZDmmf3VA5xEAC6MT1udtlYqGBrFo/E6E7rM8nBSTXJBdmJFGrEkcEhgaWXd6MO la2b/vA67vokczxoOi/3U/bsf4lHfa306oehdDD0hx3FZeFgNWLK9R79g7xlHgo/Fizn oXH0Z8Nk1S6by/gJBvp4uBHl+hGE4bA7nxowJ/kys9FTOMyXmK7g/4PY81QZtOo3jdwD 4Vcq7+QOPw4IOxNsIXWLVhfYs/+fwSSyzL29jiqlai0za2YSc8in9bR1M1OXe9nXLnVC 4uCA== X-Received: by 10.66.248.227 with SMTP id yp3mr11415799pac.158.1366254775953; Wed, 17 Apr 2013 20:12:55 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <516f5701$0$29977$c3e8da3$5496439d@news.astraweb.com> References: <66e78281-542b-41b3-a56d-04bf736d1e0a@googlegroups.com> <14a9ca59-218d-4dec-9e03-b7ac6b92d378@af5g2000pbd.googlegroups.com> <516f5701$0$29977$c3e8da3$5496439d@news.astraweb.com> From: Ian Kelly Date: Wed, 17 Apr 2013 21:12:15 -0600 Subject: Re: Atoms, Identifiers, and Primaries To: Python Content-Type: text/plain; charset=ISO-8859-1 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: 9 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1366254785 news.xs4all.nl 2230 [2001:888:2000:d::a6]:50447 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:43802 On Wed, Apr 17, 2013 at 8:14 PM, Steven D'Aprano wrote: > Incorrect. Early Fortran, which was definitely Turing complete, was > incapable of using recursion. But that doesn't matter, since any > recursive algorithm can be re-written as iteration. So long as a language > can iterate an indefinite number of times, it may be Turing complete. You're also confusing "recursion" with "recursive programming". See the response I just gave to Mark.