Path: csiph.com!usenet.pasdenom.info!news.albasani.net!eternal-september.org!feeder.eternal-september.org!newsfeed101.telia.com!starscream.dk.telia.net!news.tele.dk!news.tele.dk!small.news.tele.dk!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 0.049 X-Spam-Evidence: '*H*': 0.90; '*S*': 0.00; 'nested': 0.07; '%s",': 0.09; 'restarted': 0.09; 'cc:addr:python-list': 0.10; 'csv': 0.16; 'lcd': 0.16; 'match:': 0.16; 'subject:compare': 0.16; 'received:209.85.214.174': 0.21; 'file:': 0.22; 'cc:2**0': 0.23; 'seems': 0.23; 'cc:no real name:2**0': 0.24; 'cc:addr:python.org': 0.25; 'header:In-Reply-To:1': 0.25; 'looks': 0.26; 'skip:b 30': 0.27; 'message-id:@mail.gmail.com': 0.27; 'run': 0.28; 'record': 0.28; 'this.': 0.29; "i'm": 0.29; 'speakers': 0.30; 'code': 0.31; 'received:google.com': 0.34; 'received:209.85': 0.35; 'but': 0.36; 'compare': 0.36; 'two': 0.37; 'received:209': 0.37; 'subject:: ': 0.38; 'received:209.85.214': 0.39; 'where': 0.40; 'header:Received:5': 0.40; 'wide': 0.62; 'prices': 0.62; 'skip:m 50': 0.65; 'price': 0.66; 'panel': 0.71; 'as:': 0.75; 'basically,': 0.84; 'database:': 0.84; 'x[5]': 0.84 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=ZOf1/fuXKOo0tpEfiR4aQKA9LPfarvl5zWAG3C5oFmE=; b=UGKWnQayPb0BYCrM4mxrwHc8NX2rX320decAF48MtmAu0LM0u7HxZvPcYbePGCKkgL zsNJ/kFWQHM4c5B19ltZOwJx+v9iuvMRTVsOB0llG0svjgQXxk29ZDCzugySLpiwDhfE uzcBBlivH3wSKv9hd26oVF8BHjq/lXTJNfkkOiEm820SosJ2GODcnzPxE/TzdumMh+w4 zZBs0B3vl6zdzewXs9fvThWVwQ5Q1ylJuFm3SghfPyGZDHA7Kx9tHeFly9fmiILMUc9j BeGxTKLxmgGy6Z+ThawIiZJA0tRAvRT0ZEb2G6F/r24RKUXCRLguPY8uYgEUvCuqGzh2 La9Q== MIME-Version: 1.0 In-Reply-To: References: <50bfe9d8$0$29994$c3e8da3$5496439d@news.astraweb.com> Date: Thu, 6 Dec 2012 19:55:09 +0100 Subject: Re: Confused compare function :) From: Anatoli Hristov To: Dennis Lee Bieber Content-Type: text/plain; charset=UTF-8 Cc: python-list@python.org 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: 27 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1354820111 news.xs4all.nl 6854 [2001:888:2000:d::a6]:38310 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:34419 > gmane.comp.python.general: > >> But basically, the code seems to run a pair of nested for-loops: >> >> for SKU in database: >> for SKU in csv file: >> if the two SKUs match: >> compare their prices and update the database >> > OUCH... > > I'm presuming the CSV is restarted each time the database record > changes... > > That would seem better reformulated as: > > for (SKU, price) in CSV: > DB.execute("update SKUtable set price = %s where SKU = %s", > (price, SKU) ) > -- I don't know if I get it right, but Nope, each loop I'm getting: for x in CSV: MONIIE2409HDS-B1;MON;II;E2409HDS-B1;E2409HDS-B1;IIYAMA LCD 24" Wide 1920x1080 TN Panel Speakers 2MS Black;130;9;RECTD0.41;0,41;;;;;;;;; So x[4] is my SKU and x[5] is price and so on. Each loop looks like this.