[David Mertz]
>> As me and Uncle Timmy have pointed out, it IS FIXED in sorted(). You just
>> need to call:
>>
>> sorted_stuff = sorted(stuff, key=nan_aware_transform)
[Christopher Barker]
> But what would that be? floats have inf and -inf -- so how could you force
> the NaNs to be at the end or beginning? ...
Python floats are encoded in 64 bits, but a key function can return
anything at all - it doesn't have to return a float. David gave an
example that returned a tuple, and I pointed to a msg in a bug report
that returned a signed 64-bit integer implementing the relatively
recent IEEE "total_order" function:
https://bugs.python.org/msg336487
although that last moves all "negative" NaNs "to the far left" and all
"positive" NaNs "to the far right".
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