Path: csiph.com!x330-a1.tempe.blueboxinc.net!usenet.pasdenom.info!aioe.org!news-transit.tcx.org.uk!rt.uk.eu.org!newsfeed.xs4all.nl!newsfeed5.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 0.014 X-Spam-Evidence: '*H*': 0.97; '*S*': 0.00; 'parser': 0.05; 'argument,': 0.09; 'modifies': 0.09; 'subclass': 0.09; 'def': 0.13; 'argument': 0.15; 'class,': 0.15; 'fancy': 0.16; 'ideas?': 0.16; 'neat': 0.16; 'received:74.125.82.174': 0.24; 'problem': 0.29; 'skip:p 30': 0.29; 'message-id:@gmail.com': 0.33; 'header :User-Agent:1': 0.33; 'there': 0.33; 'object': 0.33; 'to:addr :python-list': 0.34; 'received:74.125.82': 0.35; 'something': 0.35; 'project': 0.35; 'but': 0.37; 'received:74.125': 0.37; 'received:google.com': 0.37; 'options': 0.37; 'think': 0.37; 'received:10.0.0': 0.38; 'should': 0.39; 'to:addr:python.org': 0.40; 'alternative': 0.65; 'structures.': 0.84 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:subject :content-type:content-transfer-encoding; bh=n2ajpBrJC254A6oOKOcQUQj7MI4uJoAVxNmrLgjIClI=; b=E2Y0N9Ihr9iAAjvdgLX/R4X9jK/QPTNFSR+j52iitz+JoQ/wiU16tau2YczNjf8wBa PwudvqmP194QaVXH0uexHOCGxnnU1Gh4BVnpC5PEQqC4oUNdwbDLlmb1FV0dtCfAMwOb XqmHl/MM3cpFgzi3QflHwSEno7zRi7Ei7J01w= Date: Fri, 16 Dec 2011 11:37:54 +0000 From: Andrea Crotti User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:8.0) Gecko/20111108 Thunderbird/8.0 MIME-Version: 1.0 To: python-list@python.org Subject: merging argparse parsers Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.12 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: 18 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1324035481 news.xs4all.nl 6893 [2001:888:2000:d::a6]:45047 X-Complaints-To: abuse@xs4all.nl Xref: x330-a1.tempe.blueboxinc.net comp.lang.python:17352 I would like to have something like merged_parser = LoggingParser() + OtherParser() Which should create an argument parser with all the options composed. Now for that I think I would need to subclass the argument, and something fancy with the overloading. The problem is that apparently there is no Argument class, but add_argument just change the object internal data structures. So the only alternative I see now is to do something like: def add_project_argument(parser): parser.add_argument('project_path', help='paths of the project to run') which is not very neat and modifies the object in place. Any other ideas?