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Author brett.cannon
Recipients amaury.forgeotdarc, belopolsky, brett.cannon, mark.dickinson, stingray
Date 2010-06-17.20:30:54
SpamBayes Score 0.01845628
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Message-id <1276806657.13.0.890991194849.issue2267@psf.upfronthosting.co.za>
In-reply-to
Content 
There is a difference between methods and overridden operators (slightly) in terms of cognitive understanding. I mean creating a new instance from a timestamp seems like an operation on the object by the object. Addition, though, seems like a creation of a new object by the two objects working together, which suggests contravariance.

Best I can think of. Otherwise ask on python-dev since Guido called the operator overriding expectation.
History
Date User Action Args
2010-06-17 20:30:58brett.cannonsetrecipients: + brett.cannon, amaury.forgeotdarc, mark.dickinson, belopolsky, stingray
2010-06-17 20:30:57brett.cannonsetmessageid: <1276806657.13.0.890991194849.issue2267@psf.upfronthosting.co.za>
2010-06-17 20:30:54brett.cannonlinkissue2267 messages
2010-06-17 20:30:54brett.cannoncreate