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Re: Differences of "!=" operator behavior in python3 and python2 [ bug? ]

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  Re: Differences of "!=" operator behavior in python3 and python2 [ bug? ] Dave Angel <davea@davea.name> - 2013-05-13 21:41 -0400

#45276 — Re: Differences of "!=" operator behavior in python3 and python2 [ bug? ]

On 05/13/2013 07:30 PM, Cameron Simpson wrote:
> On 13May2013 19:22, Dave Angel <davea@davea.name> wrote:
> | On 05/13/2013 06:53 PM, Mark Lawrence wrote:
> | >I much prefer the alternative <> for != but some silly people insisted
> | >that this be removed from Python3.  Just how stupid can you get?
> |
> | So which special methods should the <> operator call?  By rights it
> | ought to call both __gt__ and __lt__ and return True if either of
> | them is True.
>
> Surely it should require both of them to be true...

Then it would never be true.  At least not for numbers.

>
> Personally I'm for != given we have ==. Aside from notational
> consistency it makes conceptual sense for unordered types, which
> <> does not really.

That's the point of mentioning __gt__ and __lt__,  they aren't available 
on unordered types.



-- 
DaveA

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