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Author r.david.murray
Recipients andymaier, docs@python, eric.araujo, ezio.melotti, r.david.murray, rhettinger, sandro.tosi, terry.reedy, tshepang
Date 2014-07-12.18:34:43
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Unless I'm misremembering, it is exactly __lt__ (or __gt__, if __lt__ returns NotImplemented) that sorting depends on.  Since I'm sure there is code out there that depends on this fact, I wonder if it should be part of the language definition.

Also, the comparison documentation ( speaks about "total ordering" as being the requirement, which has a specific mathematical meaning (which sets, for example, do not satisfy, even though they have a __lt__ method).  Whether or not the distinction is worth explaining in the tutorial is a open question.
Date User Action Args
2014-07-12 18:34:43r.david.murraysetrecipients: + r.david.murray, rhettinger, terry.reedy, ezio.melotti, eric.araujo, sandro.tosi, docs@python, tshepang, andymaier
2014-07-12 18:34:43r.david.murraysetmessageid: <>
2014-07-12 18:34:43r.david.murraylinkissue14050 messages
2014-07-12 18:34:43r.david.murraycreate