Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!us.feeder.erje.net!newsfeed.fsmpi.rwth-aachen.de!newsfeed.straub-nv.de!newsfeed.pionier.net.pl!feed.xsnews.nl!border03.ams.xsnews.nl!feeder04.ams.xsnews.nl!abp001.ams.xsnews.nl!frontend-F09-08.ams.news.kpn.nl From: Cecil Westerhof Newsgroups: comp.lang.python Subject: Let exception fire or return None Organization: Decebal Computing X-Face: "(y8cC@tg_12{">GF'UXTW]FHI2wMiZNrnf'1EFQ&O#$m:f#O7+7}kR,v+Pti8=Vi/Z"g^?b"E X-Homepage: http://www.decebal.nl/ Date: Thu, 30 Apr 2015 09:43:06 +0200 Message-ID: <87bni6awol.fsf@Equus.decebal.nl> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux) Cancel-Lock: sha1:bb6ZeA7gXP3kfnvi8SXK4PoJiD4= MIME-Version: 1.0 Content-Type: text/plain Lines: 17 NNTP-Posting-Host: 81.207.62.244 X-Trace: 1430379889 news.kpn.nl 18968 81.207.62.244@kpn/81.207.62.244:48994 Xref: csiph.com comp.lang.python:89610 I have a function to fetch a message from a file: def get_indexed_message(message_filename, index): """ Get index message from a file, where 0 gets the first message """ return open(expanduser(message_filename), 'r').readlines()[index].rstrip() What is more the Python way: let the exception fire like this code when index is to big, or catching it and returning None? I suppose working zero based is OK. -- Cecil Westerhof Senior Software Engineer LinkedIn: http://www.linkedin.com/in/cecilwesterhof