Path: csiph.com!usenet.pasdenom.info!news.etla.org!news.stack.nl!newsfeed.xs4all.nl!newsfeed3.news.xs4all.nl!xs4all!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 0.003 X-Spam-Evidence: '*H*': 0.99; '*S*': 0.00; 'digest': 0.04; 'from:addr:yahoo.co.uk': 0.04; 'duplicate': 0.07; 'subject:code': 0.07; 'lawrence': 0.09; 'planned.': 0.09; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'subject:Why': 0.09; 'worked.': 0.09; 'dict': 0.16; 'keys:': 0.16; 'received:80.91.229.3': 0.16; 'received:plane.gmane.org': 0.16; 'red,': 0.16; 'right;': 0.16; 'slight': 0.16; 'values?': 0.16; 'do,': 0.16; 'wrote:': 0.18; 'variable': 0.18; 'help.': 0.21; '>>>': 0.22; 'print': 0.22; 'header:User-Agent:1': 0.23; 'url:moin': 0.24; "i've": 0.25; 'post': 0.26; 'code:': 0.26; 'values': 0.27; 'header:X-Complaints- To:1': 0.27; 'header:In-Reply-To:1': 0.27; 'fixed': 0.29; 'wonder': 0.29; "doesn't": 0.30; 'work.': 0.31; 'url:wiki': 0.31; 'keys': 0.31; 'though.': 0.31; 'url:python': 0.33; 'becomes': 0.33; "i'd": 0.34; 'could': 0.34; 'basic': 0.35; 'problem.': 0.35; 'but': 0.35; 'version': 0.36; 'subject:?': 0.36; 'url:org': 0.36; 'thank': 0.38; 'apple': 0.38; 'to:addr:python-list': 0.38; 'that,': 0.38; 'does': 0.39; '12,': 0.39; 'though,': 0.39; 'to:addr:python.org': 0.39; 'skip:p 20': 0.39; 'received:org': 0.40; 'how': 0.40; 'read': 0.60; 'most': 0.60; 'tell': 0.60; 'simple': 0.61; "you've": 0.63; 'email addr:gmail.com': 0.63; 'soon': 0.63; 'great': 0.65; 'due': 0.66; 'status:': 0.68; 'obvious': 0.74; 'subject:this': 0.83; 'glance': 0.84; 'otten': 0.84; 'subject:want': 0.91; '2013': 0.98 X-Injected-Via-Gmane: http://gmane.org/ To: python-list@python.org From: Mark Lawrence Subject: Re: Why isn't this code working how I want it to? Date: Sat, 12 Oct 2013 12:13:55 +0100 References: <50950ef3-9fae-41cd-8a9a-4bd3ccc418c6@googlegroups.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Gmane-NNTP-Posting-Host: host-78-147-178-154.as13285.net User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:24.0) Gecko/20100101 Thunderbird/24.0.1 In-Reply-To: <50950ef3-9fae-41cd-8a9a-4bd3ccc418c6@googlegroups.com> 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: 125 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1381576449 news.xs4all.nl 15946 [2001:888:2000:d::a6]:41556 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:56741 On 12/10/2013 12:03, reubennottage@gmail.com wrote: > On Saturday, October 12, 2013 10:20:24 AM UTC+1, Peter Otten wrote: >> reubennottage@gmail.com wrote: >> >> >> >>> I've been working on a program and have had to halt it due a slight >> >>> problem. Here's a basic version of the code: >> >>> >> >>> a = 'filled' >> >>> b = 'filled' >> >>> c = 'empty' >> >>> d = 'empty' >> >>> e = 'filled' >> >>> f = 'empty' >> >>> g = 'filled' >> >>> >> >>> testdict = {a : 'apple' , b : 'banana' , c : 'cake' , d : 'damson' , e : >> >>> 'eggs' , f : 'fish' , g : 'glue'} >> >> >> >> You have duplicate keys here, which becomes obvious when you spell out the >> >> values >> >> >> >> testdict = {"filled": "apple", "filled": "banana", ...} >> >> >> >> When you do that, the last value ("banana") wins, all others (e. g. "apple") >> >> are dropped. >> >> >> >>> Now what I want to do, is if a variable is filled, print it out. This >> >>> however isn't working how I planned. The following doesn't work. >> >>> >> >>> for fillempt in testdict: >> >>> if fillempt == 'filled': >> >>> print(testdict[fillempt]) >> >>> >> >>> All this does though, is print glue, where I'd want it to print: >> >>> >> >>> apple >> >>> banana >> >>> eggs >> >>> glue >> >>> >> >>> Perhaps a dictionary isn't the best way to do this.. I wonder what else I >> >>> can do... >> >> >> >> A dictionary is spot-on, but you have to use the unique "apple", >> >> "banana",... as keys: >> >> >> >>>>> status = {"apple": "filled", "banana": "filled", "cake": "empty"} >> >>>>> for item in status: >> >> ... if status[item] == "filled": >> >> ... print(item) >> >> ... >> >> apple >> >> banana >> >> >> >> Could it be that you just confused dict keys with dict values? > > This fixed it, thank you! I did think a dictionary was right; I never considered swapping the keys with the values, though. A simple 'fix, but it worked. You've been a great help. > That's good to hear. Would you please read and digest this https://wiki.python.org/moin/GoogleGroupsPython if you need to post again, a quick glance above will soon tell you why :) -- Roses are red, Violets are blue, Most poems rhyme, But this one doesn't. Mark Lawrence