Path: csiph.com!x330-a1.tempe.blueboxinc.net!usenet.pasdenom.info!news.albasani.net!feeder.news-service.com!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 0.004 X-Spam-Evidence: '*H*': 0.99; '*S*': 0.00; 'args': 0.07; 'subprocess': 0.09; 'pm,': 0.11; 'output': 0.12; 'subject:error': 0.12; 'error:': 0.14; 'wrote:': 0.14; 'popen,': 0.16; 'proc': 0.16; 'subject:command': 0.16; 'subject:subprocess': 0.16; 'target]': 0.16; 'capture': 0.16; 'permission': 0.16; 'url:blog': 0.18; 'shell': 0.19; 'command': 0.19; 'cc:no real name:2**0': 0.20; 'cc:2**0': 0.20; 'cheers,': 0.20; 'header:In-Reply-To:1': 0.22; 'cc:addr:python-list': 0.22; 'doc': 0.23; 'indicating': 0.23; 'received:209.85.214.174': 0.23; 'received:mail- iw0-f174.google.com': 0.23; "i'm": 0.26; 'chris': 0.27; 'message- id:@mail.gmail.com': 0.28; 'error': 0.29; 'sat,': 0.29; 'skip:" 30': 0.29; 'exit': 0.29; "skip:' 30": 0.29; 'cc:addr:python.org': 0.31; 'it.': 0.31; 'url:library': 0.31; 'import': 0.32; 'url:docs': 0.33; 'using': 0.34; 'like:': 0.35; 'status,': 0.35; 'running': 0.36; 'getting': 0.36; 'received:209.85': 0.37; 'url:python': 0.37; 'apr': 0.38; 'received:google.com': 0.38; 'but': 0.38; 'url:org': 0.38; 'received:209.85.214': 0.39; 'received:209': 0.39; 'how': 0.39; 'would': 0.40; 'header:Received:5': 0.40; '2011': 0.62; 'url:3': 0.68; 'url:0': 0.69; 'subject:Get': 0.74; 'skip:~ 30': 0.84 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rebertia.com; s=google; h=domainkey-signature:mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type; bh=n5+lY60BoXjgzbdi6SVhiIhvngF7QYuBP0o7e9dfrZ4=; b=ERAqyJVgbgDu80+ardhXakKItetwdUGX6cSg/Rjul/O0gd8Vq7IYVfVh8iKmgz2lBf 1dolIZGGFDWKgImGxupqMvGdaQ/O5pcYWvVGYWCrHfIwl0IVdYf+ZN856so1uEp2tInf P1kKNHHPIqjm/58+0PHErXTxlFylrMpIwvOwM= DomainKey-Signature: a=rsa-sha1; c=nofws; d=rebertia.com; s=google; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type; b=NUPV7rGMEESXwjj5zpb+tXFVnh0IvkQYc0ktftlu7YMKRePjAHXPrz94571WJvVN6j vKQa2OU4yfFvvdkIk10XHnSqwlDgzLSmFtkIq1MwTgXZuTOr/XZjC2t1cUmRbho2oU2R cT/ZUSpQP85K+IjcVxMuYZCkWrDjXcuMAnjwg= MIME-Version: 1.0 Sender: chris@rebertia.com In-Reply-To: References: Date: Sat, 2 Apr 2011 20:29:14 -0700 X-Google-Sender-Auth: lnbVRbIcw_a-cmIGrbARlt5y5xI Subject: Re: Get subprocess error output from shell command From: Chris Rebert To: Gnarlodious Content-Type: text/plain; charset=UTF-8 Cc: python-list@python.org 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: 30 NNTP-Posting-Host: 82.94.164.166 X-Trace: 1301801358 news.xs4all.nl 81474 [::ffff:82.94.164.166]:34226 X-Complaints-To: abuse@xs4all.nl Xref: x330-a1.tempe.blueboxinc.net comp.lang.python:2489 On Sat, Apr 2, 2011 at 8:07 PM, Gnarlodious wrote: > I'm running a shell command like: > plutil -convert xml1 "~/Library/Preferences/iCab/iCab 4 Bookmarks" > > Getting error: > ~/Library/Preferences/iCab/iCab 4 Bookmarks: Permission denied > > How would I capture this error using a method of subprocess? > > I read the doc at > http://docs.python.org/release/3.0.1/library/subprocess.html > > but confess I don't understand it. from subprocess import Popen, PIPE target = '~/Library/Preferences/iCab/iCab 4 Bookmarks' args = ['plutil', '-convert', 'xml1', target] proc = Popen(args, stdout=PIPE, stderr=PIPE) output, error_output = proc.communicate() if proc.returncode: # non-zero exit status, indicating error print("Encountered error:") print(error_output) # output the error message Cheers, Chris -- http://blog.rebertia.com