Nov. 8, 2009
8:20 p.m.
Antoine Pitrou wrote:
Stefan Krah <stefan-usenet <at> bytereef.org> writes:
Are there cases where == and != are actually needed to give a result for NaNs?
It is a common expectation that == and != always succeed. They return True or False, but don't raise an exception even on unrelated operands:
It is a common expectation, but a false one. __eq__ and __ne__ are explicitly allowed to return anything, not just bools. http://www.python.org/dev/peps/pep-0207/ -- Robert Kern "I have come to believe that the whole world is an enigma, a harmless enigma that is made terrible by our own mad attempt to interpret it as though it had an underlying truth." -- Umberto Eco