Path: csiph.com!news.swapon.de!fu-berlin.de!uni-berlin.de!not-for-mail From: Gary Herron Newsgroups: comp.lang.python Subject: Re: Exclude every nth element from list? Date: Sat, 26 Mar 2016 10:01:48 -0700 Lines: 19 Message-ID: References: <94237154-22af-4e64-85ee-9b4cf334fa6f@googlegroups.com> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit X-Trace: news.uni-berlin.de xSJ+fNoffBZBNmDGuv8WTAFwllDisDf8pM9nzO0W0cKw== Return-Path: X-Original-To: python-list@python.org Delivered-To: python-list@mail.python.org X-Spam-Status: OK 0.108 X-Spam-Level: * X-Spam-Evidence: '*H*': 0.79; '*S*': 0.01; '16,': 0.03; '[1,': 0.09; 'excludes': 0.16; 'received:io': 0.16; 'received:psf.io': 0.16; 'wrote:': 0.16; 'element': 0.18; '>>>': 0.20; 'am,': 0.23; 'select': 0.23; 'header:In-Reply-To:1': 0.24; 'header:User- Agent:1': 0.26; 'subject:list': 0.26; '14,': 0.27; '13,': 0.29; 'list': 0.34; 'there': 0.36; 'to:addr:python-list': 0.36; 'subject:?': 0.36; 'subject:: ': 0.37; 'list.': 0.37; 'subject:from': 0.39; 'received:192': 0.39; 'to:addr:python.org': 0.40; 'charset:windows-1252': 0.62; 'python-list': 0.66; 'dr.': 0.69; 'received:204': 0.75; 'institute': 0.77; '(425)': 0.84; '895-4418': 0.84; 'digipen': 0.84; 'herron': 0.84 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.6.0 In-Reply-To: <94237154-22af-4e64-85ee-9b4cf334fa6f@googlegroups.com> X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: General discussion list for the Python programming language List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Xref: csiph.com comp.lang.python:105767 On 03/26/2016 09:49 AM, beliavsky--- via Python-list wrote: > I can use x[::n] to select every nth element of a list. Is there a one-liner to get a list that excludes every nth element? Yes: >>> L=list(range(20)) >>> [x for i,x in enumerate(L) if i%3 != 0] [1, 2, 4, 5, 7, 8, 10, 11, 13, 14, 16, 17, 19] Gary Herron -- Dr. Gary Herron Department of Computer Science DigiPen Institute of Technology (425) 895-4418