Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > comp.lang.python > #25892
| Path | csiph.com!usenet.pasdenom.info!aioe.org!news.stack.nl!newsfeed.xs4all.nl!newsfeed6.news.xs4all.nl!xs4all!post.news.xs4all.nl!not-for-mail |
|---|---|
| Return-Path | <python-python-list@m.gmane.org> |
| X-Original-To | python-list@python.org |
| Delivered-To | python-list@mail.python.org |
| X-Spam-Status | OK 0.011 |
| X-Spam-Evidence | '*H*': 0.98; '*S*': 0.00; 'subject:code': 0.07; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'gui': 0.11; 'message-id:@dough.gmane.org': 0.16; 'received:173.11': 0.16; 'received:80.91.229.3': 0.16; 'received:plane.gmane.org': 0.16; 'second': 0.24; 'header:In-Reply-To:1': 0.25; 'header:User- Agent:1': 0.26; 'question': 0.27; 'header:X-Complaints-To:1': 0.28; 'prints': 0.29; "i'm": 0.29; 'expect': 0.31; 'code': 0.31; 'print': 0.32; 'to:addr:python-list': 0.33; 'code:': 0.33; 'thanks': 0.34; 'subject:?': 0.35; 'received:org': 0.36; 'totally': 0.36; 'subject:with': 0.36; 'why': 0.37; 'subject:: ': 0.38; 'nothing': 0.38; 'to:addr:python.org': 0.39; 'header:Received:5': 0.40; 'first': 0.61; 'as:': 0.75; 'subject:this': 0.84 |
| X-Injected-Via-Gmane | http://gmane.org/ |
| To | python-list@python.org |
| From | Emile van Sebille <emile@fenx.com> |
| Subject | Re: What's wrong with this code? |
| Date | Mon, 23 Jul 2012 08:36:19 -0700 |
| References | <CAMugt-pRmdy5M_18rbGC13-6_aqVOCUHYX4-C-XaPWKh+dYRtg@mail.gmail.com> |
| Mime-Version | 1.0 |
| Content-Type | text/plain; charset=ISO-8859-1; format=flowed |
| Content-Transfer-Encoding | 7bit |
| X-Gmane-NNTP-Posting-Host | 173-11-108-137-sfba.hfc.comcastbusiness.net |
| User-Agent | Mozilla/5.0 (Windows NT 5.1; rv:13.0) Gecko/20120614 Thunderbird/13.0.1 |
| In-Reply-To | <CAMugt-pRmdy5M_18rbGC13-6_aqVOCUHYX4-C-XaPWKh+dYRtg@mail.gmail.com> |
| X-BeenThere | python-list@python.org |
| X-Mailman-Version | 2.1.12 |
| Precedence | list |
| List-Id | General discussion list for the Python programming language <python-list.python.org> |
| List-Unsubscribe | <http://mail.python.org/mailman/options/python-list>, <mailto:python-list-request@python.org?subject=unsubscribe> |
| List-Archive | <http://mail.python.org/pipermail/python-list> |
| List-Post | <mailto:python-list@python.org> |
| List-Help | <mailto:python-list-request@python.org?subject=help> |
| List-Subscribe | <http://mail.python.org/mailman/listinfo/python-list>, <mailto:python-list-request@python.org?subject=subscribe> |
| Newsgroups | comp.lang.python |
| Message-ID | <mailman.2483.1343057664.4697.python-list@python.org> (permalink) |
| Lines | 54 |
| NNTP-Posting-Host | 2001:888:2000:d::a6 |
| X-Trace | 1343057664 news.xs4all.nl 6843 [2001:888:2000:d::a6]:57300 |
| X-Complaints-To | abuse@xs4all.nl |
| Xref | csiph.com comp.lang.python:25892 |
Show key headers only | View raw
On 7/23/2012 7:50 AM Stone Li said... > I'm totally confused by this code: > > Code: > > a = None > b = None > c = None > d = None > x = [[a,b], > [c,d]] > e,f = x[1] > print e,f This prints the first None,None > c = 1 > d = 2 > print e,f And nothing has happened to e or f, so this is the second None,None Why do you expect 1,2? Emile > e = 1 > f = 2 > print c,d > > Output: > > None None > None None > 1 2 > > > I'm expecting the code as: > > None None > 1 2 > 1 2 > > > What's wrong? > And this question made my GUI program totally out of control. > Thanks > >
Back to comp.lang.python | Previous | Next | Find similar | Unroll thread
Re: What's wrong with this code? Emile van Sebille <emile@fenx.com> - 2012-07-23 08:36 -0700
csiph-web