Path: csiph.com!x330-a1.tempe.blueboxinc.net!newsfeed.hal-mli.net!feeder3.hal-mli.net!newsfeed.hal-mli.net!feeder1.hal-mli.net!nntp-feed.chiark.greenend.org.uk!ewrotcd!feeds.news.ox.ac.uk!news.ox.ac.uk!news.stack.nl!newsfeed.xs4all.nl!newsfeed5.news.xs4all.nl!xs4all!post.news.xs4all.nl!not-for-mail
Return-Path: <charles@declareSub.com>
X-Original-To: python-list@python.org
Delivered-To: python-list@mail.python.org
X-Spam-Status: OK 0.172
X-Spam-Level: *
X-Spam-Evidence: '*H*': 0.66; '*S*': 0.01; 'exception': 0.12; 'block,': 0.16; 'semantically': 0.16; 'subject:syntax': 0.16; 'tuples,': 0.16; 'subject:question': 0.16; "i'm": 0.27; 'list"': 0.30; 'x-mailer:apple mail (2.1084)': 0.30; 'to:addr:python-list': 0.33; 'match': 0.33; 'wondering': 0.34; 'latter': 0.34; 'opposed': 0.36; 'charset:us-ascii': 0.36; 'but': 0.37; 'why': 0.39; 'except': 0.39; 'sense': 0.39; 'to:addr:python.org': 0.40; 'type': 0.60; 'types': 0.61; 'more': 0.61; 'header:Message-Id:1': 0.62; 'charles': 0.67; 'received:64.191': 0.84; 'lists:': 0.91
From: Charles Yeomans <charles@declareSub.com>
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: quoted-printable
Subject: except clause syntax question
Date: Mon, 30 Jan 2012 12:41:00 -0500
To: Python <python-list@python.org>
Mime-Version: 1.0 (Apple Message framework v1084)
X-Mailer: Apple Mail (2.1084)
X-BeenThere: python-list@python.org
X-Mailman-Version: 2.1.12
Precedence: list
List-Id: General discussion list for the Python programming language <python-list.python.org>
List-Unsubscribe: <http://mail.python.org/mailman/options/python-list>, <mailto:python-list-request@python.org?subject=unsubscribe>
List-Archive: <http://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: <http://mail.python.org/mailman/listinfo/python-list>, <mailto:python-list-request@python.org?subject=subscribe>
Newsgroups: comp.lang.python
Message-ID: <mailman.5218.1327946109.27778.python-list@python.org>
Lines: 16
NNTP-Posting-Host: 2001:888:2000:d::a6
X-Trace: 1327946109 news.xs4all.nl 6843 [2001:888:2000:d::a6]:35502
X-Complaints-To: abuse@xs4all.nl
Xref: x330-a1.tempe.blueboxinc.net comp.lang.python:19606

To catch more than one exception type in an except block, one writes

except (A, B, C) as e:

I'm wondering why it was decided to match tuples, but not lists:

except [A, B, C] as e:

The latter makes more sense semantically to me -- "catch all exception =
types in a list" as opposed to "catch this single thing composed of =
three exception types".


Charles Yeomans