Path: csiph.com!newsfeed.hal-mli.net!feeder3.hal-mli.net!news.tele.dk!feed118.news.tele.dk!news.tele.dk!small.news.tele.dk!newsfeed.xs4all.nl!newsfeed4.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 0.042 X-Spam-Evidence: '*H*': 0.92; '*S*': 0.00; 'finally:': 0.07; 'try:': 0.09; 'clears': 0.16; 'default:': 0.16; 'foo()': 0.16; 'sense:': 0.16; 'unexpected': 0.16; 'wrote:': 0.18; 'seems': 0.21; 'example': 0.22; "i've": 0.25; 'subject:/': 0.26; 'header:In- Reply-To:1': 0.27; 'idea': 0.28; 'am,': 0.29; 'message- id:@mail.gmail.com': 0.30; 'anyone': 0.31; 'this.': 0.32; 'received:google.com': 0.35; 'done': 0.36; 'to:addr:python-list': 0.38; 'does': 0.39; 'bad': 0.39; 'to:addr:python.org': 0.39; 'finally': 0.65; 'note:': 0.66; 'default': 0.69; 'silently': 0.84; 'subject:try': 0.84 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :content-type; bh=rbtaPMhsHRY7+2FMU1jipLwBhg14UsTZ98LuEwST0Qw=; b=VtVbFgdOyChCOP05C7trx4z+dkM8ugUMjfQQrWgyeApIy3/wo9rChZq+410qyHtuNN RAXXxHQUernKXWMZaZdL7t75/6Y/py57GHyzqu7t+sSPKumdCBdQdewCROPAmOjzqyAs 7RRZNpBKiVjf3sjpCexMszlqK50nvd8xuGgQPIYFq9J+W9yPv1XSG7ISgmCpMtfWDlni d5Q29IbGroX4G+8WrbD0emv+ajfEBIChJx6HHtq8XZ8tDPpIaIwntOGDBFyBsp6vdksk ij0RiL0IAZXBxZV7tM/PdU7FoCvEeoV2kIOCnTfkEM1eCwmOOD2wrEp5KRGX3dQsk9P6 hXsA== X-Received: by 10.236.149.107 with SMTP id w71mr2508280yhj.106.1402250571483; Sun, 08 Jun 2014 11:02:51 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: References: <0a89c96d-de62-42ad-be48-6107ce10d215@googlegroups.com> <539396F3.5090508@stoneleaf.us> <87lht73mdl.fsf@elektro.pacujo.net> From: Ian Kelly Date: Sun, 8 Jun 2014 12:02:11 -0600 Subject: Re: try/except/finally To: Python Content-Type: text/plain; charset=UTF-8 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: 28 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1402251023 news.xs4all.nl 2947 [2001:888:2000:d::a6]:49998 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:72988 On Sun, Jun 8, 2014 at 11:57 AM, Joshua Landau wrote: > On 8 June 2014 08:12, Marko Rauhamaa wrote: >> >> Does anyone have an example motivating a return from finally? It seems >> to me it would always be a bad idea as it silently clears all unexpected >> exceptions. > > In a general sense: > > try: > something_that_can_break() > return foo() # before clean_up > finally: > clean_up() > if default: > return default() # after clean_up() > > What's the best replacement? Note: I've never done this. Why not just move the default out of the finally block? try: something_that_can_break() return foo() # before clean_up finally: clean_up() if default: return default() # after clean_up()