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Author ethan.furman
Recipients draghuram, eric.araujo, ethan.furman, mrabarnett, ncoghlan, pitrou, poke, rhettinger, steven.daprano
Date 2010-12-31.15:42:48
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In-reply-to <1293791928.3680.0.camel@localhost.localdomain>
raise AttributeError from None

makes sense to me, and in a nice, short example like that I prefer it. 
In real code, however, I think

raise AttributeError.no_context("Field %s is not in table" % attr)

is going to be easier for the human to parse than

raise AttributeError("Field %s is not in table" % attr) from None
Date User Action Args
2010-12-31 15:42:51ethan.furmansetrecipients: + ethan.furman, rhettinger, ncoghlan, pitrou, draghuram, eric.araujo, mrabarnett, steven.daprano, poke
2010-12-31 15:42:48ethan.furmanlinkissue6210 messages
2010-12-31 15:42:48ethan.furmancreate