"Martin v. Löwis" <[EMAIL PROTECTED]> writes:
>> def comp(x1, x2):
>> try:
>> if x1<x2:
>> return -1
>> else:
>> return 1
>> except TypeError:
>> if str(x1)<str(x2):
>> return -1
>> else:
>> return 1
>>
>
> Please correct me if I'm wrong, but I think this is not transitive. If
> strings and ints are uncomparable, this will give you 20 < "5" and
> "5" < 8, but not 20 < 8. As a result, quicksort will do nonsense
> with that comparison function (i.e. it won't guarantee that things
> are sorted in increasing order)
Even in 2.x it doesn't work (I think I posted this earlier but I'm not
sure anymore) as this example shows:
2 < 3j and 3j < True, but True < 2
--
Arnaud
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