Sybren Stuvel wrote: > Dan Bishop enlightened us with: > >>>> a = b = 1e1000 / 1e1000 > >>>> a is b > > True > >>>> a == b > > False > > If "a is b" then they refer to the same object, hence a == b. It > cannot be otherwise, unless Python starts to defy logic. I copied your > code and got the expected result: > > >>> a = b = 1e1000 / 1e1000 > >>> a is b > True > >>> a == b > True
Probably depends on the implementation. 1e1000/1e1000 yields a NaN here, and I get True for "a is b" but False for "a==b". Presumably comparing a NaN for equality (any comparison?) always yields False. -- http://mail.python.org/mailman/listinfo/python-list
