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Path: ...!3.eu.feeder.erje.net!feeder.erje.net!fu-berlin.de!uni-berlin.de!not-for-mail From: MRAB <python@mrabarnett.plus.com> Newsgroups: comp.lang.python Subject: Re: in Python? -- Chunk -- (ChunkC '(a a b b b)), ==> ((a 2) (b 3)) Date: Sun, 9 Jun 2024 23:50:26 +0100 Lines: 26 Message-ID: <mailman.105.1717973614.2909.python-list@python.org> References: <v456ak$3pmpo$1@dont-email.me> <e149526e-91aa-4dfe-963e-d371ed3d280b@mrabarnett.plus.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Trace: news.uni-berlin.de gm2x5jnUJzg6Ebp+JyG8BQGPk2DGxZKYhhB9RHXXNZzw== Cancel-Lock: sha1:08boEsHkoUaCQeH37m0iTDjkLjE= sha256:9F7kPOQKy2IuhfZ90+t69B0cDoQc9E/HQIXSOHVvqFc= Return-Path: <python@mrabarnett.plus.com> X-Original-To: python-list@python.org Delivered-To: python-list@mail.python.org Authentication-Results: mail.python.org; dkim=pass reason="2048-bit key; unprotected key" header.d=plus.com header.i=@plus.com header.b=Gxh05UE4; dkim-adsp=none (unprotected policy); dkim-atps=neutral X-Spam-Status: OK 0.005 X-Spam-Evidence: '*H*': 0.99; '*S*': 0.00; 'python?': 0.03; 'from:addr:python': 0.09; 'received:192.168.1.64': 0.09; 'subject:Python': 0.12; '(b)': 0.16; '(bar': 0.16; 'from:addr:mrabarnett.plus.com': 0.16; 'from:name:mrab': 0.16; 'message-id:@mrabarnett.plus.com': 0.16; 'received:plus.net': 0.16; 'wrote:': 0.16; 'to:addr:python-list': 0.20; 'skip:_ 10': 0.22; 'header:User-Agent:1': 0.30; 'python-list': 0.32; 'received:192.168.1': 0.32; 'header:In-Reply-To:1': 0.34; 'bar': 0.35; 'received:192.168': 0.37; 'use': 0.39; 'received:212': 0.62; '==>': 0.84 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=plus.com; s=042019; t=1717973427; bh=5usnBycXd9GRnJKkyMe26zE2yS+zPW3MDvG9FWgaJzo=; h=Date:Subject:To:References:From:In-Reply-To; b=Gxh05UE4ZLYT4kb2JgCb/Kghm0ZTOO/jKGcYcX2RMiTjuggZ+TV050eV4yChxHa3f 5LzF53tsUD21ihcTZOuHFLO3qhnJioPDsA8q8XrWviw6VHJ9Qyw5GLzn1ZvYNDjVse WXnDLjsIq0ien7jU3AGGentCJsRT7NzcYvzhBcSS4JVEHXDal4lyAKw9XIne2KrA9L xr6nvdb7C6AY9r2nQvSWXe6WPDKQfyN9XrdVHH1sTNTMdjz3593KPaBFO+wyMRvc8E wwM7XO5aOy3doLKSr+B2XbT0JyubnctIP196Lk2qtB2LhhLDyzKEF/Yuk06O4HGURN mMuLkHRMOlvZA== X-Clacks-Overhead: "GNU Terry Pratchett" X-CM-Score: 0.00 X-CNFS-Analysis: v=2.4 cv=NPx2+F6g c=1 sm=1 tr=0 ts=666631b3 a=0nF1XD0wxitMEM03M9B4ZQ==:117 a=0nF1XD0wxitMEM03M9B4ZQ==:17 a=qEgh2NhK6qfR2VOi:21 a=IkcTkHD0fZMA:10 a=ctex4qzJY_x0heW7hEsA:9 a=QEXdDO2ut3YA:10 X-AUTH: mrabarnett@:2500 User-Agent: Mozilla Thunderbird Content-Language: en-GB In-Reply-To: <v456ak$3pmpo$1@dont-email.me> X-CMAE-Envelope: MS4xfAcSWBmc9UMJdNZl4kTFAH0YoT3fwYs91TPt/gqJA3fyMzeTlEaxibsyp7lTJpSZ7nADWG4xOHs2IA9TcwhvgRggTQcOk3Ab5Qur/U4Y2n6WJ5L2SCsq B2Tl8FFGm2bw2ME3hfDY5I+bhZDEPZ3hwufqv/Zoqpr3qJIe1tarq7Ga/JN1t4aWLNCL1Gj2m5Oc8rc8HKH+ksjhoIXGdFjXPgA= X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.39 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: <https://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> X-Mailman-Original-Message-ID: <e149526e-91aa-4dfe-963e-d371ed3d280b@mrabarnett.plus.com> X-Mailman-Original-References: <v456ak$3pmpo$1@dont-email.me> Bytes: 4361 On 2024-06-09 22:20, HenHanna via Python-list wrote: > > Chunk, ChunkC -- nice simple way(s) to write these in Python? > > > (Chunk '(a a b a a a b b)) > ==> ((a a) (b) (a a a) (b b)) > > > (Chunk '(a a a a b c c a a d e e e e)) > ==> ((a a a a) (b) (c c) (a a) (d) (e e e e)) > > > (Chunk '(2 2 foo bar bar j j j k baz baz)) > ==> ((2 2) (foo) (bar bar) (j j j) (k) (baz baz)) > > _________________ > > (ChunkC '(a a b b b)) > ==> ((a 2) (b 3)) > > (ChunkC '(a a b a a a b b)) > ==> ((a 2) (b 1) (a 3) (b 2)) You can make use of itertools.groupby.