Path: csiph.com!fu-berlin.de!uni-berlin.de!not-for-mail From: Vincent Davis Newsgroups: comp.lang.python Subject: Re: Try: rather than if : Date: Mon, 14 Dec 2015 16:48:58 -0700 Lines: 27 Message-ID: References: <20151214231420.GA20631@cskk.homeip.net> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Trace: news.uni-berlin.de ZcsC98pT2nxH3rh0/+c6MgzvD9IxXN5VfJGbwruoc8Lg== 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; 'skip:p 60': 0.05; '%s\\n"': 0.09; 'attribute.': 0.09; 'name)': 0.09; 'received:209.85.218': 0.10; 'accesses': 0.16; 'attribute,': 0.16; 'emit': 0.16; 'fetches': 0.16; 'received:io': 0.16; 'received:psf.io': 0.16; 'simpson': 0.16; 'try/except': 0.16; 'wrote:': 0.16; 'attribute': 0.18; 'try:': 0.18; '2015': 0.20; 'first,': 0.20; 'issue.': 0.20; 'to:name:python-list@python.org': 0.20; 'pass': 0.22; 'dec': 0.23; 'header:In-Reply-To:1': 0.24; 'mon,': 0.24; 'message-id:@mail.gmail.com': 0.27; '14,': 0.27; 'raise': 0.29; 'code': 0.30; 'probably': 0.31; 'possibly': 0.32; 'except': 0.34; 'handle': 0.34; 'received:google.com': 0.35; 'should': 0.36; 'received:209.85': 0.36; 'to:addr:python-list': 0.36; 'pm,': 0.36; 'subject:: ': 0.37; 'skip:& 10': 0.37; 'version': 0.38; 'received:209': 0.38; 'to:addr:python.org': 0.40; 'your': 0.60; 'cameron': 0.66; 'intent': 0.66 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=vincentdavis.net; s=google; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :content-type; bh=U62Q4+UdILDr8BGU/+q+roLGufJvo+p0AJuntKtMlJE=; b=XO1ZecNwCf2PP3mQL14vPLAWtRmyoE6ycOhmFz7HUsrouDtaDIblYG/mAlkhSKKQgg DE1djWUtotR6f/EzSGlWj0ej6NA9KWros8CL+IubBM8iJKZ7zVayT59p0HIr8qLu4KWG dqia24xeI5lVwlqUZXzjG+2NUjAMKWNFVtJNo= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:content-type; bh=U62Q4+UdILDr8BGU/+q+roLGufJvo+p0AJuntKtMlJE=; b=dJaR0kk84FT3rY44Fts8auI3CoAOPfi0uKyZOSXUx6veJQOihI+fZzsJlk+78njZe7 lUr6FcfuKsphqiEaef2gdE9TkpEoDNbaA4cSx8uZbmHVw+tVkEkdwQ7VUCP11xEXiUhp Em0tL2xWQlns1B3OfRCViSN8sXgrAs7Xikfs8t4CKek8FhDnOwfmCeT5gWf5+8iFJIQF AylvnDwt6jkXPo6sfTfcW0GQMim0TnNzV6BCuniyYLU9reb7QWIL76QuZz7iSvMZKUBr AKgduuR4tgRWvLe2mSsraJ1uj5B5gSXTQCQ7LZeFFcHjMx7ekcNjxd6eT1lvd6C3G70y 3Gxg== X-Gm-Message-State: ALoCoQlJsf1hDTl5Gzo3SV7s4WOT8BBhFdOlKQ0QIyIsSI7BatzALidZW10PCHgYr3rfAuZVqOzJFOfk2QUtWdy55NINUPPkYlrlLV435TwhvEMvr9D+u/k= X-Received: by 10.202.217.5 with SMTP id q5mr24798908oig.29.1450136957709; Mon, 14 Dec 2015 15:49:17 -0800 (PST) In-Reply-To: <20151214231420.GA20631@cskk.homeip.net> X-Content-Filtered-By: Mailman/MimeDel 2.1.20+ X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.20+ Precedence: list List-Id: General discussion list for the Python programming language List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Xref: csiph.com comp.lang.python:100437 On Mon, Dec 14, 2015 at 4:14 PM, Cameron Simpson wrote: > First, notice that the code inside the try/except _only_ fetches the > attribute. Your version calls the "write" attribute, and also accesses > handle.name. Either of those might also emit AttributeError, and should > probably not be silently caught. > =E2=80=8BI think the intent of the original code was to check if handle had= the attribute "name", I don't think the attribute "write" was the issue. So then possibly this based on your suggestion: try: write =3D handel.write except AttributeError: raise try: name =3D handel.name write("# Report_file: %s\n" % name) except AttributeError: pass write("########################################\n") Vincent Davis 720-301-3003