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Fri Mar 26 02:37:48 CET 2010 · https://mail.python.org/pipermail/python-dev/2010-March/098927.html

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On 03/26/2010 01:57 AM, Steven D'Aprano wrote:

> In fact, identity of NANs is itself an implementation quirk of 
> programming languages like Python: logically, NANs don't have identity 
> at all.
> 
> To put it another way: all ONEs are the same ONE, even if they come from 
> different sources, are in different memory locations, or have different 
> identities; but all NANs are different, even if they come from the same 
> source, are in the same memory location, or have the same identity.

+inf. Bravo!.

:-)

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Showing content from https://mail.python.org/pipermail/python-dev/2010-March/098927.html below:

[Python-Dev] Why is nan != nan?