Path: csiph.com!usenet.pasdenom.info!news.albasani.net!newsfeed.freenet.ag!news2.euro.net!newsfeed.xs4all.nl!newsfeed6.news.xs4all.nl!xs4all!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; 'subject:Python': 0.05; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'terry': 0.09; 'stored': 0.10; 'extension': 0.13; 'library': 0.15; 'arrays,': 0.16; 'numpy': 0.16; 'received:80.91.229.3': 0.16; 'received:plane.gmane.org': 0.16; 'reedy': 0.16; 'wrote:': 0.17; 'exists': 0.17; 'jan': 0.18; 'pass': 0.25; 'header:In-Reply-To:1': 0.25; 'header:User-Agent:1': 0.26; 'common': 0.26; 'format,': 0.27; 'header:X-Complaints-To:1': 0.28; 'case,': 0.29; 'much.': 0.33; 'problem': 0.33; 'anyone': 0.33; 'to:addr:python-list': 0.33; 'me?': 0.33; 'hi,': 0.33; 'data,': 0.35; 'feed': 0.35; 'pm,': 0.35; 'there': 0.35; 'received:org': 0.36; 'but': 0.36; 'thank': 0.36; 'far': 0.37; 'data': 0.37; 'subject:: ': 0.38; 'some': 0.38; 'to:addr:python.org': 0.39; 'header:Received:5': 0.40; 'help': 0.40; 'analysis': 0.70; 'received:fios.verizon.net': 0.84 X-Injected-Via-Gmane: http://gmane.org/ To: python-list@python.org From: Terry Reedy Subject: Re: Pass numeric arrays from C extensions to Python Date: Sun, 23 Sep 2012 22:48:11 -0400 References: <05993015-7be1-4424-b062-1755f59f3142@googlegroups.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Gmane-NNTP-Posting-Host: pool-173-75-251-66.phlapa.fios.verizon.net User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:15.0) Gecko/20120824 Thunderbird/15.0 In-Reply-To: <05993015-7be1-4424-b062-1755f59f3142@googlegroups.com> 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: 19 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1348454915 news.xs4all.nl 6884 [2001:888:2000:d::a6]:51882 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:29886 On 9/23/2012 9:39 PM, JBT wrote: > Hi, > > I am looking for a way to pass numeric arrays, such as *float a[100]; > double b[200];*, from C extension codes to python. The use case of > this problem is that you have data stored in a particular format, > NASA common data format (CDF) in my case, and there exists an > official C library to read/create/edit such data, and you want to do > data analysis in python. The problem comes down to how to feed the > data into python. > > I did some googling, but so far no luck. Can anyone help me? Thank > you very much. I would look into numpy and scipy. -- Terry Jan Reedy