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


Groups > comp.lang.python > #31463

Re: list comprehension question

Path csiph.com!usenet.pasdenom.info!news.albasani.net!newsfeed.freenet.ag!news2.euro.net!newsgate.cistron.nl!newsgate.news.xs4all.nl!post.news.xs4all.nl!not-for-mail
Return-Path <dwightdhutto@gmail.com>
X-Original-To python-list@python.org
Delivered-To python-list@mail.python.org
X-Spam-Status OK 0.020
X-Spam-Evidence '*H*': 0.96; '*S*': 0.00; 'subject:skip:c 10': 0.07; 'subject:question': 0.08; 'received:mail-qc0-f174.google.com': 0.09; 'cc:addr:python-list': 0.10; 'mixture': 0.16; 'oct': 0.16; 'wed,': 0.16; 'wrote:': 0.17; 'back.': 0.22; 'kevin': 0.23; 'cc:2**1': 0.24; 'cc:addr:python.org': 0.25; 'header:In-Reply- To:1': 0.25; 'am,': 0.27; 'message-id:@mail.gmail.com': 0.27; 'correct': 0.28; 'subject:list': 0.28; "i'm": 0.29; 'url:python': 0.32; 'docs': 0.33; 'mixed': 0.33; 'received:google.com': 0.34; 'list': 0.35; 'faster': 0.35; 'said,': 0.35; 'doing': 0.35; 'received:209.85': 0.35; 'but': 0.36; 'url:org': 0.36; 'cc:no real name:2**1': 0.36; 'received:209': 0.37; 'received:209.85.216': 0.37; 'subject:: ': 0.38; 'url:docs': 0.38; 'header:Received:5': 0.40; 'real': 0.61; 'reply': 0.66; 'url:tutorial': 0.93
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=HTjkIDfBPB7keRPgPjehEDbpCqetOFyWFgx6ZZOIjtc=; b=KQtR38UVLdG/vsVQbWFfruKNPvfT+BM2IDGandY716kfdc/2q+dBFv3RUc4PQrWAB9 fXgy4JzfA/KftMGBoPz1wx+mtWwi5Rk//W6v8xstgoK68FyBObLQDxRbiMTc8YV5JFIM Dak3s3hksCjKqvQL7FiofWbkVKa3RNpXw8WBC5JouyXirNeBUYEdvHxBHcbO9DrpeIms 3shySwHDa9vmYr8iZZApQPrfSBnqIGt4TSgOsYKL+eAVuBNnUiwKK2o/2aX6P/nKn27i 0fMGdUcB5sAFKOEE9X3kbJiKVoBeQz/YCldARVUAghVPwnlhFsuUAr0fFVPlY0Yk+WJy vtaQ==
MIME-Version 1.0
In-Reply-To <CA+C4C6cjha4bMZ9gyx5fTp0c_nfFQxRGu31dGNMjgHQBu73=ig@mail.gmail.com>
References <CA+C4C6f=24oD4seHY_-h1F0GMvBTWNYbzTABXOdtKkAZtE9hdQ@mail.gmail.com> <507E145E.9060008@davea.name> <CA+C4C6cjha4bMZ9gyx5fTp0c_nfFQxRGu31dGNMjgHQBu73=ig@mail.gmail.com>
Date Wed, 17 Oct 2012 01:09:08 -0400
Subject Re: list comprehension question
From Dwight Hutto <dwightdhutto@gmail.com>
To Kevin Anthony <kevin.s.anthony@gmail.com>
Content-Type text/plain; charset=ISO-8859-1
Cc python-list@python.org, d@davea.name
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.2318.1350450551.27098.python-list@python.org> (permalink)
Lines 19
NNTP-Posting-Host 2001:888:2000:d::a6
X-Trace 1350450551 news.xs4all.nl 6868 [2001:888:2000:d::a6]:49160
X-Complaints-To abuse@xs4all.nl
Xref csiph.com comp.lang.python:31463

Show key headers only | View raw


On Wed, Oct 17, 2012 at 12:43 AM, Kevin Anthony
<kevin.s.anthony@gmail.com> wrote:
> Is it not true that list comprehension is much faster the the for loops?
>
> If it is not the correct way of doing this, i appoligize.
> Like i said, I'm learing list comprehension.
>
I thought it was matrix multiplication mixed with list comprehension.

Check this out real quick from the docs for list comprehension, but if
it's a mixture of matrix multi, and list comp, then reply back.

http://docs.python.org/tutorial/datastructures.html#list-comprehensions


-- 
Best Regards,
David Hutto
CEO: http://www.hitwebdevelopment.com

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


Thread

Re: list comprehension question Dwight Hutto <dwightdhutto@gmail.com> - 2012-10-17 01:09 -0400

csiph-web