On 2008-01-21, Steven D'Aprano <[EMAIL PROTECTED]> wrote: > On Sun, 20 Jan 2008 21:15:02 -0600, Albert Hopkins wrote: > > According to the IEEE-754 standard the usual trichotomy of "x is less > than y, x is equal to y, or x is greater than y" has to be extended to > include "x and y are unordered". Comparisons with NaNs are unordered, and > so expressions like "x < nan" should signal an exception.
That doesn't follow. The problem is not that x < nan returns False because that is correct since x isn't smaller than nan. The problem is cmp(x, nan) returning 1, because that indicates that x is greater than nan and that isn't true. -- Antoon Pardon -- http://mail.python.org/mailman/listinfo/python-list
