Path: csiph.com!usenet.pasdenom.info!dedibox.gegeweb.org!gegeweb.eu!nntpfeed.proxad.net!proxad.net!feeder1-2.proxad.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: <python-python-list@m.gmane.org>
X-Original-To: python-list@python.org
Delivered-To: python-list@mail.python.org
X-Spam-Status: OK 0.001
X-Spam-Evidence: '*H*': 1.00; '*S*': 0.00; 'from:addr:yahoo.co.uk': 0.04; 'subject:code': 0.07; '22,': 0.09; 'executed': 0.09; 'lawrence': 0.09; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'language.': 0.14; 'question.': 0.14; '"is': 0.16; 'a()': 0.16; 'b()': 0.16; 'cleaner': 0.16; 'pythonic': 0.16; 'received:80.91.229.3': 0.16; 'received:plane.gmane.org': 0.16; 'subject:python': 0.16; 'followed': 0.16; 'language': 0.16; 'wrote:': 0.18; 'code.': 0.18; 'header:User-Agent:1': 0.23; 'certainly': 0.24; 'possibly': 0.26; 'header:X-Complaints-To:1': 0.27; 'header:In-Reply-To:1': 0.27; 'chris': 0.29; 'code': 0.31; 'bunch': 0.31; 'december': 0.35; 'johnson': 0.35; 'requirement': 0.35; 'there': 0.35; 'should': 0.36; 'to:addr:python-list': 0.38; 'to:addr:python.org': 0.39; 'received:org': 0.40; 'our': 0.64; 'more': 0.64; 'beat': 0.68; 'otten': 0.84; 'rick': 0.93; '2013': 0.98
X-Injected-Via-Gmane: http://gmane.org/
To: python-list@python.org
From: Mark Lawrence <breamoreboy@yahoo.co.uk>
Subject: Re: cascading python executions only if return code is 0
Date: Mon, 23 Dec 2013 12:44:20 +0000
References: <mailman.4500.1387739297.18130.python-list@python.org> <bab87cd3-1993-4803-b13d-65ac786d29b6@googlegroups.com> <BAY176-W4382AB517BCACB30A16D54DAC60@phx.gbl> <CAPTjJmqFH9FYc=Xw3Qvw=pC6RaW22yjTOiCndbtbsDXZavhz2w@mail.gmail.com> <mailman.4516.1387753377.18130.python-list@python.org> <420afeb9-674f-4974-8f6d-6cc80c7f57b1@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-78-147-20-57.as13285.net
User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:24.0) Gecko/20100101 Thunderbird/24.2.0
In-Reply-To: <420afeb9-674f-4974-8f6d-6cc80c7f57b1@googlegroups.com>
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: <https://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: <https://mail.python.org/mailman/listinfo/python-list>, <mailto:python-list-request@python.org?subject=subscribe>
Newsgroups: comp.lang.python
Message-ID: <mailman.4551.1387802656.18130.python-list@python.org>
Lines: 38
NNTP-Posting-Host: 2001:888:2000:d::a6
X-Trace: 1387802656 news.xs4all.nl 2861 [2001:888:2000:d::a6]:54993
X-Complaints-To: abuse@xs4all.nl
Xref: csiph.com comp.lang.python:62621

On 22/12/2013 23:57, Rick Johnson wrote:
> On Sunday, December 22, 2013 5:02:51 PM UTC-6, Mark Lawrence wrote:
>> On 22/12/2013 22:51, Chris Angelico wrote:
>
>> if a() == 0:
>>
>>       if b() == 0:
>>
>>           c()
>>
>> I can only see one way that you can possibly intepret it.
>

[snip molehill turned into Himalayas]

Again Frank's original question.

"
I have a requirement where I need to sequentially execute a bunch of 
executions, each execution has a return code. the followed executions 
should only be executed if the return code is 0. is there a cleaner or 
more pythonic way to do this other than the following ?

if a() == 0:
     if b() == 0:
         c()
"

What is so difficult to understand about "is there a cleaner or more 
pythonic way to do this other than the following?"  Peter Otten for one 
certainly managed to get it, and as always managed to beat me to the draw :(

-- 
My fellow Pythonistas, ask not what our language can do for you, ask 
what you can do for our language.

Mark Lawrence