Path: csiph.com!usenet.pasdenom.info!aioe.org!news.stack.nl!newsfeed.xs4all.nl!newsfeed1.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 0.007 X-Spam-Evidence: '*H*': 0.99; '*S*': 0.00; 'subject:code': 0.07; 'key.': 0.09; 'received:192.168.1.101': 0.09; 'suffix': 0.09; 'subject:Help': 0.11; 'python': 0.11; 'stored': 0.12; '(slow!)': 0.16; 'chapel': 0.16; 'd[key]': 0.16; 'key)': 0.16; 'keyerror': 0.16; 'subject:PLEASE': 0.16; 'library': 0.18; 'module': 0.19; 'import': 0.22; 'header:User-Agent:1': 0.23; 'exists': 0.24; 'header:In-Reply-To:1': 0.27; 'to:2**1': 0.27; 'code': 0.31; 'keys': 0.31; 'pickle': 0.31; 'file': 0.32; 'open': 0.33; 'subject:with': 0.35; 'received:google.com': 0.35; 'there': 0.35; 'module.': 0.36; 'object,': 0.36; 'list': 0.37; 'message- id:@gmail.com': 0.38; 'to:addr:python-list': 0.38; 'delete': 0.39; 'to:addr:python.org': 0.39; 'such': 0.63; 'to:addr:gmail.com': 0.65; 'sample': 0.67; 'subject:this': 0.83; 'hill': 0.95 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=message-id:date:from:user-agent:mime-version:to:subject:references :in-reply-to:content-type:content-transfer-encoding; bh=fJtCCqw/Ojh51pdPhgYiUy1oJTS5jUBbg4NWI4uZLZo=; b=ufJ2a4Gzx+z3kCYutXaGjmmQ+lL+EqT7TfoqdAWZYdG/TKx8eC2If3axTp0pctL65E EuG5MBTF4ca9av6M4V176j2t0eedcsn7SWPGSou7wEiCkF2aLsNUudlm62kXGWGtLkUJ 0Q8o8mgoAtZvzO5m3oCrZ2IY/wsCYBwpCa0hLiK76+8a00MyMrCHpTaLq/zukVzoUzJ2 kFDdWWcPCUOs5gSUEqK1nG6P0LlOcALPA6UYuHCxgQ4i0pX5MF2yznxWLWGLXxFfWQnW AdICVMLPVagI0EDtURT/RYWkIOMAyFtftMuIqmN+4xlqiof38pzVwB1zLzvp10x7mhYG UoBQ== X-Received: by 10.224.131.133 with SMTP id x5mr1597134qas.70.1383693354342; Tue, 05 Nov 2013 15:15:54 -0800 (PST) Date: Tue, 05 Nov 2013 18:15:56 -0500 From: bob gailer User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:24.0) Gecko/20100101 Thunderbird/24.1.0 MIME-Version: 1.0 To: python-list@python.org, Nikos Subject: Re: Help me with this code PLEASE References: <20131105223107.GA99421@cskk.homeip.net> In-Reply-To: <20131105223107.GA99421@cskk.homeip.net> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit 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: 26 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1383693356 news.xs4all.nl 15888 [2001:888:2000:d::a6]:48853 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:58536 There is also the shelve module. It uses pickle to marshal a Python object, then stores it in a file under a key. Sample code from the module documentation: import shelve d = shelve.open(filename) # open -- file may get suffix added by low-level library d[key] = data # store data at key (overwrites old data if using an existing key) data = d[key] # retrieve a COPY of data at key (raise KeyError if no such key) del d[key] # delete data stored at key (raises KeyError if no such key) flag = key in d # true if the key exists klist = list(d.keys()) # a list of all existing keys (slow!) -- Bob Gailer 919-636-4239 Chapel Hill NC