Path: csiph.com!x330-a1.tempe.blueboxinc.net!usenet.pasdenom.info!weretis.net!feeder1.news.weretis.net!feeder.erje.net!newsfeed.xs4all.nl!newsfeed6.news.xs4all.nl!xs4all!post.news.xs4all.nl!not-for-mail
Return-Path: <ethan@stoneleaf.us>
X-Original-To: python-list@python.org
Delivered-To: python-list@mail.python.org
X-Spam-Status: OK 0.004
X-Spam-Evidence: '*H*': 0.99; '*S*': 0.00; 'exec': 0.07; 'python': 0.08; 'from:addr:ethan': 0.09; 'from:addr:stoneleaf.us': 0.09; 'from:name:ethan furman': 0.09; 'keys,': 0.09; 'message- id:@stoneleaf.us': 0.09; 'received:gator410.hostgator.com': 0.09; 'subject:string': 0.09; '~ethan~': 0.09; '"%s': 0.16; '"dirty': 0.16; 'bound.': 0.16; 'chris,': 0.16; 'received:72.11': 0.16; 'received:72.11.125': 0.16; 'received:72.11.125.166': 0.16; 'subject:creation': 0.16; 'subject:variable': 0.16; 'meant': 0.17; 'wrote:': 0.18; 'seems': 0.20; 'to:2**1': 0.21; 'header:In-Reply- To:1': 0.22; 'dictionary': 0.23; 'besides': 0.24; 'function': 0.27; 'tried': 0.27; 'explicit': 0.29; 'problem': 0.29; 'example': 0.29; 'talked': 0.30; 'chris': 0.30; 'anyone': 0.31; 'cases': 0.32; "won't": 0.33; 'header:User-Agent:1': 0.33; 'to:addr:python- list': 0.34; 'someone': 0.34; 'nested': 0.34; 'thank': 0.35; 'google': 0.35; 'variables': 0.37; 'but': 0.37; 'problems': 0.37; 'doing': 0.38; 'using': 0.38; 'some': 0.38; 'subject:from': 0.38; 'help': 0.39; 'help!': 0.40; 'to:addr:python.org': 0.40; 'quick': 0.61; 'your': 0.61; 'received:websitewelcome.com': 0.64; 'received:184': 0.67; 'serious': 0.78; 'complex,': 0.84; 'trick,': 0.84; 'sum': 0.89; 'received:gateway04.websitewelcome.com': 0.91; 'speaks': 0.91; 'to:addr:msn.com': 0.96
Date: Fri, 09 Dec 2011 12:01:01 -0800
From: Ethan Furman <ethan@stoneleaf.us>
User-Agent: Thunderbird 1.5.0.10 (Windows/20070221)
MIME-Version: 1.0
To: Massi <massi_srb@msn.com>,  python-list@python.org
Subject: Re: Dynamic variable creation from string
References: <b078a04b-024b-48dc-b24a-8f4ce75fa238@13g2000vbu.googlegroups.com>	<4edffed8$0$29988$c3e8da3$5496439d@news.astraweb.com>	<mailman.3388.1323304088.27778.python-list@python.org>	<qotobvjv3xj.fsf@ruuvi.it.helsinki.fi> <8ebfe32c-46a5-4bdc-a853-018d7f72d3d3@y18g2000yqy.googlegroups.com>
In-Reply-To: <8ebfe32c-46a5-4bdc-a853-018d7f72d3d3@y18g2000yqy.googlegroups.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
X-AntiAbuse: This header was added to track abuse, please include it with any abuse report
X-AntiAbuse: Primary Hostname - gator410.hostgator.com
X-AntiAbuse: Original Domain - python.org
X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12]
X-AntiAbuse: Sender Address Domain - stoneleaf.us
X-BWhitelist: no
X-Source: 
X-Source-Args: 
X-Source-Dir: 
X-Source-Sender: mail.admailinc.com ([192.168.10.136]) [72.11.125.166]:2204
X-Source-Auth: ethan+stoneleaf.us
X-Email-Count: 1
X-Source-Cap: dG9idWs7dG9idWs7Z2F0b3I0MTAuaG9zdGdhdG9yLmNvbQ==
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.3484.1323460660.27778.python-list@python.org>
Lines: 25
NNTP-Posting-Host: 2001:888:2000:d::a6
X-Trace: 1323460660 news.xs4all.nl 6884 [2001:888:2000:d::a6]:43114
X-Complaints-To: abuse@xs4all.nl
Xref: x330-a1.tempe.blueboxinc.net comp.lang.python:16931

Massi wrote:
> Thank you all for your replies, first of all my Sum function was an
> example simplifying what I have to do in my real funciton. In general
> the D dictionary is complex, with a lot of keys, so I was searching
> for a quick method to access all the variables in it without doing the
> explicit creation:
> 
> a, b, c = D['a'], D['b'], D['c']
> 
> and without using directly the D dictionary (boring...).
> When I talked about nested function I meant both cases Chris, but this
> is not a really tighten bound.
> I tried to follow the hints of Chris together with some help by google
> and used the following code:
> 
> for k in D : exec "%s = D[k]" %k
> 
> That seems to do the trick, but someone speaks about "dirty code", can
> anyone point me out which problems this can generate?
> Again, thank you for your help!

Besides the serious security issues, this method won't make the problem 
any better in Python 3.

~Ethan~