Path: csiph.com!usenet.pasdenom.info!aioe.org!news.stack.nl!newsfeed.xs4all.nl!newsfeed1.news.xs4all.nl!xs4all!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; 'element': 0.07; 'float': 0.07; 'string': 0.09; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'subject:string': 0.09; 'trailing': 0.09; 'jan': 0.12; 'comma': 0.16; 'confuse': 0.16; 'lambda': 0.16; 'optional': 0.16; 'received:80.91.229.3': 0.16; 'received:dip0.t-ipconnect.de': 0.16; 'received:plane.gmane.org': 0.16; 'received:t-ipconnect.de': 0.16; 'unnecessary.': 0.16; 'followed': 0.16; 'wrote:': 0.18; 'first.': 0.19; '>>>': 0.22; 'header:User-Agent:1': 0.23; 'performing': 0.26; 'header:X -Complaints-To:1': 0.27; 'character': 0.29; "skip:' 10": 0.31; '>>>>': 0.31; 'quotes': 0.31; 'subject:numbers': 0.31; 'supposed': 0.32; 'guess': 0.33; 'subject:from': 0.34; 'subject:with': 0.35; 'computing': 0.35; 'but': 0.35; 'list': 0.37; 'to:addr:python- list': 0.38; 'pm,': 0.38; 'that,': 0.38; 'explain': 0.39; 'to:addr:python.org': 0.39; 'skip:p 20': 0.39; 'received:org': 0.40; 'space': 0.40; 'sum': 0.64; 'thomas': 0.65; '2015': 0.84; 'joel': 0.91
X-Injected-Via-Gmane: http://gmane.org/
To: python-list@python.org
From: Peter Otten <__peter__@web.de>
Subject: Re: extracting numbers with decimal places from a string
Date: Mon, 12 Jan 2015 01:09:21 +0100
Organization: None
References: <7240a574-dfd7-46c3-80eb-0657b41894bb@googlegroups.com> <mailman.17591.1421006803.18130.python-list@python.org> <3bfeea22-cded-4363-92fa-6f1b33ddae16@googlegroups.com> <mailman.17595.1421012580.18130.python-list@python.org> <8077448.xvuXrbCisO@PointedEars.de> <mailman.17599.1421016900.18130.python-list@python.org> <2182977.fJl0o3iPdP@PointedEars.de> <mailman.17600.1421019325.18130.python-list@python.org> <1786463.stBbe1naGD@PointedEars.de>
Mime-Version: 1.0
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: 8Bit
X-Gmane-NNTP-Posting-Host: p57bdb9c4.dip0.t-ipconnect.de
User-Agent: KNode/4.13.3
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.17603.1421021375.18130.python-list@python.org>
Lines: 32
NNTP-Posting-Host: 2001:888:2000:d::a6
X-Trace: 1421021375 news.xs4all.nl 2832 [2001:888:2000:d::a6]:40100
X-Complaints-To: abuse@xs4all.nl
Xref: csiph.com comp.lang.python:83580

Thomas 'PointedEars' Lahn wrote:

> Joel Goldstick wrote:
> 
>> On Sun, Jan 11, 2015 at 6:12 PM, Thomas 'PointedEars' Lahn
>> <PointedEars@web.de> wrote:
>>> Joel Goldstick wrote:
>>>> Am I missing something.
>>>                        ^
>>> […]
>>> You are missing a leading space character because in the string the
>>> comma was followed by one.
>> 
>> I see that now.  Performing float on each element of the list will
>> take care of that, or I guess .strip() on each first.
> 
> As I showed, .strip() is unnecessary.  But float() is always necessary for
> computing the sum and suffices indeed together with s.split() if s is just
> a comma-separated list of numeric strings with optional whitespace leading
> and trailing the comma:
> 
>   print(sum(map(lambda x: float(x), s.split(',')))
> 
> Please trim your quotes to the relevant minimum.

Hm, can you explain what this

lambda x: float(x)

is supposed to achieve? I mean other than to confuse a newbie...