Path: csiph.com!usenet.pasdenom.info!gegeweb.org!de-l.enfer-du-nord.net!feeder1.enfer-du-nord.net!feeds.phibee-telecom.net!newsfeed.xs4all.nl!newsfeed6.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 0.000 X-Spam-Evidence: '*H*': 1.00; '*S*': 0.00; 'exception': 0.03; 'args': 0.04; 'explicitly': 0.04; 'guido': 0.05; 'mrab': 0.05; 'none:': 0.05; 'sys': 0.05; '"__main__":': 0.07; '__name__': 0.07; 'msg': 0.07; 'try:': 0.07; 'attribute.': 0.09; 'err:': 0.09; 'msg:': 0.09; 'to:addr:comp.lang.python': 0.09; 'cc:addr:python-list': 0.10; 'def': 0.10; '--help"': 0.16; 'msg):': 0.16; 'statement.': 0.16; 'url:thread': 0.16; 'url:weblogs': 0.16; 'usage,': 0.16; 'weird.': 0.16; 'wrote:': 0.17; 'code,': 0.18; 'import': 0.21; 'cc:2**0': 0.23; '15,': 0.23; 'monday,': 0.23; 'raise': 0.24; 'cc:no real name:2**0': 0.24; 'idea': 0.24; 'cc:addr:python.org': 0.25; 'header:In-Reply-To:1': 0.25; 'header:User-Agent:1': 0.26; 'skip:> 10': 0.27; "doesn't": 0.28; 'post': 0.28; 'prints': 0.29; 'unchanged': 0.29; 'definition': 0.29; 'skip:_ 10': 0.29; 'van': 0.29; 'class': 0.29; 'function': 0.30; 'print': 0.32; 'received:google.com': 0.34; 'thanks': 0.34; 'received:209.85': 0.35; 'except': 0.36; 'but': 0.36; 'october': 0.37; 'received:209': 0.37; 'subject:: ': 0.38; 'gives': 0.39; 'where': 0.40; 'help': 0.40; 'skip:u 10': 0.60; "you've": 0.61; 'more': 0.63; 'url:jsp': 0.71 Newsgroups: comp.lang.python Date: Mon, 15 Oct 2012 10:44:07 -0700 (PDT) In-Reply-To: Complaints-To: groups-abuse@google.com Injection-Info: glegroupsg2000goo.googlegroups.com; posting-host=65.205.52.2; posting-account=_dIAQQoAAAB7Yieol6fmkK_HviJUbJt3 References: <8b5cb95f-424b-45a8-b19b-42f92f531a75@googlegroups.com> <96889d3a-1217-4743-93b5-f8dd5686eebd@googlegroups.com> User-Agent: G2/1.0 X-Google-Web-Client: true X-Google-IP: 65.205.52.2 MIME-Version: 1.0 Subject: Re: Exception Messages From: Wanderer To: comp.lang.python@googlegroups.com Content-Type: text/plain; charset=ISO-8859-1 Cc: python-list@python.org 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: , Message-ID: Lines: 89 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1350323056 news.xs4all.nl 6868 [2001:888:2000:d::a6]:53618 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:31331 On Monday, October 15, 2012 1:34:24 PM UTC-4, MRAB wrote: > On 2012-10-15 18:18, Wanderer wrote: > > > On Monday, October 15, 2012 12:34:53 PM UTC-4, MRAB wrote: > > > > > >> > > >> Yes, but you've put the message in msg, and Exception doesn't have that > > >> > > >> attribute. > > >> > > > > > > That's weird. I got this Exception class definition idea from this post by Guido van Rostrum, Where he gives this main function to look like > > > > > > import sys > > > import getopt > > > > > > class Usage(Exception): > > > def __init__(self, msg): > > > self.msg = msg > > > > > > def main(argv=None): > > > if argv is None: > > > argv = sys.argv > > > try: > > > try: > > > opts, args = getopt.getopt(argv[1:], "h", ["help"]) > > > except getopt.error, msg: > > > raise Usage(msg) > > > # more code, unchanged > > > except Usage, err: > > > print >>sys.stderr, err.msg > > > print >>sys.stderr, "for help use --help" > > > return 2 > > > > > > if __name__ == "__main__": > > > sys.exit(main()) > > > > > > > > > > > > > > > http://www.artima.com/weblogs/viewpost.jsp?thread=4829 > > > > > > > > Note how it explicitly prints err.msg. Not in the raise statement. Adding the def __str__ made it work for me. Thanks