Would there be support for a more general cmp/__cmp__

[Antoon Pardon]

Op 2005-10-20, Duncan Booth schreef <duncan.booth at invalid.invalid>:
> Antoon Pardon wrote:
>
>> The problem now is that the cmp protocol has no way to
>> indicate two objects are incomparable, they are not
>> equal but neither is one less or greater than the other.
>
> If that is the case then you implement __eq__ and __ne__ to return 
> True/False and make cmp throw an exception. I don't see any need to extend 
> the cmp protocol.

That is not sufficient. There are domains where an order exists, but not
a total order. So for some couples of elements it is possible to say
one is less than the other, but not for all such couples.

Your solution wouldn't allow for such a case.

-- 
Antoon Pardon