[Python-3000] None in Comparisons

[Barry Warsaw]

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On Nov 11, 2008, at 8:54 AM, M.-A. Lemburg wrote:

> On 2008-11-11 14:28, Antoine Pitrou wrote:
>> M.-A. Lemburg <mal <at> egenix.com> writes:
>>> Why was the special case for None being "smaller" than all other
>>> objects in Python removed from Python 3.0 ? (see object.c in Py2.x)
>>
>> Because ordered comparisons (<, <=, >, >=) are much stricter in 3.0  
>> than in 2.x.
>> In practice, ordered comparisons which don't have an obvious,  
>> intuitive meaning
>> now raise a TypeError (such as comparing a number and a string).
>
> That's fine. I'm just talking about the special case for None that
> has existed in Python for years - and for a good reason.

How hard is it to implement your own "missing" object which has the  
desired semantics?  Why should something as fundamental as None have it?

- -Barry

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