Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!eu.feeder.erje.net!xlned.com!feeder1.xlned.com!newsfeed.xs4all.nl!newsfeed3.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 0.140 X-Spam-Level: * X-Spam-Evidence: '*H*': 0.77; '*S*': 0.05; 'iterate': 0.09; 'from:addr:rosuav': 0.16; 'from:name:chris angelico': 0.16; 'underlying': 0.16; 'wrote:': 0.18; 'wed,': 0.18; 'print': 0.22; 'sort': 0.25; 'this:': 0.26; 'values': 0.27; 'header:In-Reply- To:1': 0.27; 'am,': 0.29; 'message-id:@mail.gmail.com': 0.30; 'usually': 0.31; 'problem': 0.35; 'subject:lists': 0.35; 'but': 0.35; 'received:google.com': 0.35; 'sometimes': 0.38; 'to:addr :python-list': 0.38; 'rather': 0.38; 'to:addr:python.org': 0.39; 'obvious': 0.74; 'confusion.': 0.84; 'careful': 0.91; 'do:': 0.91; '2013': 0.98 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:x-received:in-reply-to:references:date:message-id :subject:from:to:content-type; bh=ZA5YHh99HuBCuLIkuQids3MkW2ZDwpHrTimRBKk5wns=; b=kzg7OLi8Qn5hhU+r3oL7s561AHrHlWaOiJdR8D2HkJnVGxjRFQJWLfz7hlsMSPZaOh 5x3HvzWHh5AwzfI90Z1XAsXiJr4/LgfOKTeWURd7vPMXBtdoqyn45m+Gm4KixknucYjo wEoEeA2et4e/zXPwlt53iYBX78wLrhX79PhWzwwrFcbKcDlieILqzBONwT6uH/2BOocb ojW8Th4xWtCSSCMpYy2Ds87k55LwK42DYyP3yNMnHYC0KMgpHN2WwAEy+Sncd82tydNX ukziY7s7opIkKZX2WBIQCFuGrw0P2gNJ2aJkCEjOJnMJZEXng4pN5HsG/JytHByTwr7F ntsA== MIME-Version: 1.0 X-Received: by 10.52.231.231 with SMTP id tj7mr1633363vdc.111.1366126986464; Tue, 16 Apr 2013 08:43:06 -0700 (PDT) In-Reply-To: <20130416153701.GA18377@gmail.com> References: <20130416153701.GA18377@gmail.com> Date: Wed, 17 Apr 2013 01:43:06 +1000 Subject: Re: a couple of things I don't understand wrt lists From: Chris Angelico To: python-list@python.org 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: 20 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1366126994 news.xs4all.nl 2701 [2001:888:2000:d::a6]:56305 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:43677 On Wed, Apr 17, 2013 at 1:37 AM, aaB wrote: > but when I do: > > for i in rule: > print rule[i] When you iterate over rule, you don't iterate over the indices, but over the values themselves. Try this: for i in rule: print i Incidentally, "for i in range(rule)" isn't actually going to work; what you would have used is "for i in range(len(rule))". Be careful with that sort of thing; it's usually safest to actually copy and paste from an interactive session, rather than reconstruct manually. Sometimes it's not obvious whether it was a copy/paste problem or the cause of your underlying confusion. ChrisA