Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!eu.feeder.erje.net!feeds.phibee-telecom.net!newsfeed.xs4all.nl!newsfeed2a.news.xs4all.nl!xs4all!newsgate.cistron.nl!newsgate.news.xs4all.nl!post.news.xs4all.nl!not-for-mail Return-Path: 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; 'python,': 0.02; '[0,': 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; "':'": 0.16; '...,': 0.16; 'matlab': 0.16; 'range(0,': 0.16; 'received:80.91.229.3': 0.16; 'received:plane.gmane.org': 0.16; 'slicing:': 0.16; 'subject:array': 0.16; 'index': 0.16; '>>>': 0.22; 'header:User- Agent:1': 0.23; '15,': 0.26; 'header:X-Complaints-To:1': 0.27; 'array': 0.29; 'writes:': 0.31; 'subject:with': 0.35; 'subject:?': 0.36; 'message-id:@gmail.com': 0.38; 'to:addr:python-list': 0.38; 'to:addr:python.org': 0.39; 'received:org': 0.40; 'how': 0.40; 'range': 0.61; 'here': 0.66; '(while': 0.84; 'received:89': 0.85 X-Injected-Via-Gmane: http://gmane.org/ To: python-list@python.org From: Akira Li <4kir4.1i@gmail.com> Subject: Re: How to index an array with even steps? Date: Fri, 25 Jul 2014 16:02:48 +0400 References: <9160a3c5-ff5f-4fb2-a125-4a1be28438b9@googlegroups.com> Mime-Version: 1.0 Content-Type: text/plain X-Gmane-NNTP-Posting-Host: 89.169.229.68 User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3.50 (gnu/linux) Cancel-Lock: sha1:5iJ5ILvAE8xzSeWXGqYSu8oFTtk= X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: General discussion list for the Python programming language List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Newsgroups: comp.lang.python Message-ID: Lines: 15 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1406289784 news.xs4all.nl 2941 [2001:888:2000:d::a6]:54758 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:75202 fl writes: > In Python, ':' is used to indicate range (while in Matlab I know it can be used > to control steps). How to index an array with 0, 5, 10, 15...995? Just use slicing: >>> L = range(1000) # your array goes here >>> L[::5] [0, 5, 10, 15, ..., 995] # Python 2 range(0, 1000, 5) # Python 3 -- Akira