Question about sorted in Python 3.0rc1
josh logan
dear.jay.logan at gmail.com
Mon Sep 22 09:07:47 EDT 2008
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Mon Sep 22 09:07:47 EDT 2008
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On Sep 22, 7:32 am, Sion Arrowsmith <si... at chiark.greenend.org.uk> wrote: > josh logan <dear.jay.lo... at gmail.com> wrote: > > >sorted(P) # throws TypeError: unorderable types Player() < Player() > > >The sorted function works when I define __lt__. > >I must be misreading the documentation, because I read for the > >documentation __cmp__ that it is called if none of the other rich > >comparison functions are defined. > > You're either misreading or forgetting that __eq__ and __ne__, > which you define, are rich comparison functions. __cmp__ will only > be called for a comparison when *none* of the rich comparison > functions are defined, not just the one in question. > > -- > \S -- si... at chiark.greenend.org.uk --http://www.chaos.org.uk/~sion/ > "Frankly I have no feelings towards penguins one way or the other" > -- Arthur C. Clarke > her nu becomeþ se bera eadward ofdun hlæddre heafdes bæce bump bump bump Hello Sion, When I don't define the __eq__ and __ne__ comparison functions, the same unexpected behavior occurs.
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