Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.python > #53004

Re: python eval function

Path csiph.com!newsfeed.hal-mli.net!feeder3.hal-mli.net!newsfeed.hal-mli.net!feeder1.hal-mli.net!newsfeed.xs4all.nl!newsfeed1.news.xs4all.nl!xs4all!post.news.xs4all.nl!not-for-mail
Return-Path <mohsen@pahlevanzadeh.org>
X-Original-To python-list@python.org
Delivered-To python-list@mail.python.org
X-Spam-Status OK 0.006
X-Spam-Evidence '*H*': 0.99; '*S*': 0.00; 'answer?': 0.09; 'exec': 0.09; 'input,': 0.09; 'slow.': 0.09; 'cc:addr:python-list': 0.11; 'idea:': 0.16; 'questioned': 0.16; 'slow,': 0.16; 'task.': 0.16; 'to:addr:pearwood.info': 0.16; 'to:addr:steve+comp.lang.python': 0.16; "to:name:steven d'aprano": 0.16; 'unsafe': 0.16; 'subject:python': 0.16; 'wrote:': 0.18; 'code.': 0.18; 'all,': 0.19; 'solution.': 0.20; 'written': 0.21; 'aug': 0.22; 'cc:addr:python.org': 0.22; 'rid': 0.24; 'mon,': 0.24; '(or': 0.24; 'question': 0.24; 'cc:2**0': 0.24; 'cc:no real name:2**0': 0.24; 'post': 0.26; 'asking': 0.27; 'header:In-Reply-To:1': 0.27; 'external': 0.29; "doesn't": 0.30; 'skip:@ 10': 0.30; 'waste': 0.30; 'code': 0.31; "d'aprano": 0.31; 'steven': 0.31; 'anyone': 0.31; 'run': 0.32; 'basic': 0.35; 'there': 0.35; 'collecting': 0.36; "didn't": 0.36; 'useful': 0.36; 'thank': 0.38; "you're": 0.61; 'first': 0.61; 'name': 0.63; 'field': 0.63; 'dear': 0.65; 'answer.': 0.68; 'sharing': 0.69; 'link:': 0.72; 'future,': 0.83; '2013': 0.98
DKIM-Signature v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=pahlevanzadeh.org; s=default; h=Content-Transfer-Encoding:Mime-Version:Content-Type:References:In-Reply-To:Date:Cc:To:From:Subject:Message-ID; bh=IxFQMMWApju/gf7FLpGgQhy4HI6xesKNDIuLbnzK8B4=; b=piFQqvZMxlyP2T7iQnTZDFkvWv9POPdYfwF8GasXge9VtVNrLKIgL58fr7D4iBWtcGGUq3LQ1HddCLi0Qhmzrtgz8q+G2WKt8DjgDmzGHCB0KlALGIqT1hmkv/Z62b/PQ0KJIagEQ52vhmn/iLiE1LDfJQdYVMkjaTP6FMolCls=;
Subject Re: python eval function
From Mohsen Pahlevanzadeh <mohsen@pahlevanzadeh.org>
To Steven D'Aprano <steve+comp.lang.python@pearwood.info>
Date Mon, 26 Aug 2013 19:43:53 +0430
In-Reply-To <521aa76a$0$29986$c3e8da3$5496439d@news.astraweb.com>
References <mailman.228.1377474113.19984.python-list@python.org> <521aa76a$0$29986$c3e8da3$5496439d@news.astraweb.com>
Content-Type text/plain; charset="UTF-8"
X-Mailer Evolution 3.4.4-4+b1
Mime-Version 1.0
Content-Transfer-Encoding 7bit
X-AntiAbuse This header was added to track abuse, please include it with any abuse report
X-AntiAbuse Primary Hostname - part7.royal-servers.com
X-AntiAbuse Original Domain - python.org
X-AntiAbuse Originator/Caller UID/GID - [47 12] / [47 12]
X-AntiAbuse Sender Address Domain - pahlevanzadeh.org
X-Get-Message-Sender-Via part7.royal-servers.com: authenticated_id: mohsen@pahlevanzadeh.org
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 <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.237.1377530050.19984.python-list@python.org> (permalink)
Lines 43
NNTP-Posting-Host 2001:888:2000:d::a6
X-Trace 1377530050 news.xs4all.nl 15899 [2001:888:2000:d::a6]:48038
X-Complaints-To abuse@xs4all.nl
Xref csiph.com comp.lang.python:53004

Show key headers only | View raw

On Mon, 2013-08-26 at 00:55 +0000, Steven D'Aprano wrote:
> On Sun, 25 Aug 2013 23:48:34 +0430, Mohsen Pahlevanzadeh wrote:
> 
> > Dear all,
> > 
> > eval doesn't run my code at the following link:
> > http://stackoverflow.com/questions/18432198/eval-function-doesnt-work-
> in-python
> 
> 
> Are you asking a question or just sharing a useful link?
> 
> 
> 
> > Thank you before your answer...
> 
> What question do you want us to answer? The question on Stackoverflow has 
> already been answered correctly: there is no need to use eval (or exec) 
> for this basic task. 
> 
> Also, you're not writing C code. Get rid of the semi-colons, they are 
> just a waste of time, and make you look like an incompetent programmer.
> 
> Using exec is not the right solution. That is unsafe, if the field name 
> and content come from a database or external input, your code now has a 
> *serious* Code Injection vulnerability. AND it is slow. So you have 
> written slow, unsafe code. Get rid of it, and use setattr like you have 
> already been told:
> 
> setattr(self, fieldName, fieldValue)
> 
> 
> 
> -- 
> Steven
I didn't post a useful link,i questioned my problem.Of course, At first
i put it @stackoverflow then post its link for the following idea:
1. collecting votes for me and someone answered.
2. If anyone have my question in future, can use it.
Thank you for answer.

--mohsen

Back to comp.lang.python | Previous | Next — Previous in thread | Find similar | Unroll thread

Thread

python eval function Mohsen Pahlevanzadeh <mohsen@pahlevanzadeh.org> - 2013-08-25 23:48 +0430
  Re: python eval function Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-08-26 00:55 +0000
    Re: python eval function Mohsen Pahlevanzadeh <mohsen@pahlevanzadeh.org> - 2013-08-26 19:43 +0430

csiph-web