Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!eu.feeder.erje.net!news.stack.nl!newsfeed.xs4all.nl!newsfeed4.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 0.002 X-Spam-Evidence: '*H*': 1.00; '*S*': 0.00; 'from:addr:yahoo.co.uk': 0.04; 'output': 0.05; 'preference': 0.07; 'lawrence': 0.09; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'try:': 0.09; 'language.': 0.14; 'readable': 0.16; 'received:80.91.229.3': 0.16; 'received:plane.gmane.org': 0.16; 'subject:3.3': 0.16; 'subject:values': 0.16; 'subject:python': 0.16; 'language': 0.16; 'wrote:': 0.18; 'print': 0.22; 'header:User-Agent:1': 0.23; 'values': 0.27; 'header:X-Complaints-To:1': 0.27; 'header:In- Reply-To:1': 0.27; 'skip:c 30': 0.32; 'guess': 0.33; 'could': 0.34; "can't": 0.35; 'something': 0.35; 'but': 0.35; 'to:addr :python-list': 0.38; 'to:addr:python.org': 0.39; 'received:org': 0.40; 'guarantee': 0.63; 'personal': 0.63; 'our': 0.64; 'week,': 0.64; 'more': 0.64; 'day': 0.76; 'received:2': 0.84; 'start.': 0.84 X-Injected-Via-Gmane: http://gmane.org/ To: python-list@python.org From: Mark Lawrence Subject: Re: Comparing values of counter in python 3.3 Date: Thu, 12 Dec 2013 10:11:18 +0000 References: <7b7028b8-5de0-4a3a-a23b-2e19fe859955@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-2-98-206-55.as13285.net User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:24.0) Gecko/20100101 Thunderbird/24.2.0 In-Reply-To: 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: 32 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1386843106 news.xs4all.nl 2872 [2001:888:2000:d::a6]:37332 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:61692 On 12/12/2013 09:55, Wolfgang Maier wrote: >> I want to print only key,values in Counter2 which have values > then corresponding value in Counter1. >> E.g >> Counter1={97:1,99:2,196:2,198:1} >> Counter2={97:1 ,99:3, 196:1,198:1} >> >> # Output >> [99,3] >> > > Try: > > [[key, Counter2[key]] for key in Counter1 if Counter2[key] > Counter1[key]] > > for a start. > If you can't guarantee that every key from Counter1 is also in Counter2 you could use something like: > > [[key, Counter2[key]] for key in Counter1 if key in Counter2 and Counter2[key] > Counter1[key]] > > Best, > Wolfgang > Personal preference I suppose, but give me a for loop any day of the week, guess I just find them more readable :) -- My fellow Pythonistas, ask not what our language can do for you, ask what you can do for our language. Mark Lawrence