Re: How to do this?

Path	csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!eu.feeder.erje.net!xlned.com!feeder7.xlned.com!news2.euro.net!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; '[0,': 0.09; '[0]': 0.09; 'nice!': 0.09; 'python:': 0.09; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'subject:How': 0.10; 'python': 0.11; 'received:80.91.229.3': 0.16; 'received:dip.t-dialin.net': 0.16; 'received:plane.gmane.org': 0.16; 'received:t-dialin.net': 0.16; 'wrote:': 0.18; '>>>': 0.22; 'this?': 0.23; 'header:User-Agent:1': 0.23; 'header:X-Complaints-To:1': 0.27; 'something': 0.35; 'subject:?': 0.36; 'thank': 0.38; 'to:addr:python-list': 0.38; 'to:addr:python.org': 0.39; 'received:org': 0.40; 'how': 0.40; 'skip:n 10': 0.64; 'subject:this': 0.83; 'ana': 0.84
X-Injected-Via-Gmane	http://gmane.org/
To	python-list@python.org
From	Peter Otten <__peter__@web.de>
Subject	Re: How to do this?
Date	Mon, 01 Apr 2013 13:32:29 +0200
Organization	None
References	<83a54022-576d-465b-b6bd-7e21cde59d99@googlegroups.com> <mailman.4051.1364813918.2939.python-list@python.org> <29fa109e-8ed0-4b1b-a9c0-473e2bace687@googlegroups.com>
Mime-Version	1.0
Content-Type	text/plain; charset="UTF-8"
Content-Transfer-Encoding	8Bit
X-Gmane-NNTP-Posting-Host	p5084939b.dip.t-dialin.net
User-Agent	KNode/4.7.3
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	<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.4053.1364815917.2939.python-list@python.org> (permalink)
Lines	40
NNTP-Posting-Host	2001:888:2000:d::a6
X-Trace	1364815917 news.xs4all.nl 6852 [2001:888:2000:d::a6]:48346
X-Complaints-To	abuse@xs4all.nl
Xref	csiph.com comp.lang.python:42455

Show key headers only | View raw

Ana Dionísio wrote:

> Nice! Thank you!
> 
> And if I need something like this?
> 
> [0 0 0 0 0.17 0.17 0.17 0.17 0 0 0 0.17 0.17 0.17 0 0 0 0 0 0 0]
> 
> How can I do this?

With vanilla Python:

>>> vt = [0] * 20
>>> for i, v in enumerate(vt):
...     if 4 <= i < 8 or 13 <= i < 16:
...             vt[i] = .17
... 
>>> vt
[0, 0, 0, 0, 0.17, 0.17, 0.17, 0.17, 0, 0, 0, 0, 0, 0.17, 0.17, 0.17, 0, 0, 
0, 0]

With vanilla Python using slices:

>>> vt = [0] * 20
>>> vt[4:8] = [.17]*4
>>> vt[13:16] = [.17]*3
>>> vt
[0, 0, 0, 0, 0.17, 0.17, 0.17, 0.17, 0, 0, 0, 0, 0, 0.17, 0.17, 0.17, 0, 0, 
0, 0]

With numpy:

>>> vt = numpy.zeros(20)
>>> vt[4:8] = vt[13:16] = .17
>>> vt
array([ 0.  ,  0.  ,  0.  ,  0.  ,  0.17,  0.17,  0.17,  0.17,  0.  ,
        0.  ,  0.  ,  0.  ,  0.  ,  0.17,  0.17,  0.17,  0.  ,  0.  ,
        0.  ,  0.  ])

Thread

How to do this? Ana Dionísio <anadionisio257@gmail.com> - 2013-04-01 03:14 -0700
  Re: How to do this? Vincent Vande Vyvre <vincent.vandevyvre@swing.be> - 2013-04-01 12:58 +0200
    Re: How to do this? Ana Dionísio <anadionisio257@gmail.com> - 2013-04-01 04:08 -0700
      Re: How to do this? Peter Otten <__peter__@web.de> - 2013-04-01 13:32 +0200
      Re: How to do this? Dave Angel <davea@davea.name> - 2013-04-01 07:53 -0400
    Re: How to do this? Ana Dionísio <anadionisio257@gmail.com> - 2013-04-01 04:08 -0700
  Re: How to do this? Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-04-01 13:28 +0100

csiph-web