On Nov 28, 11:14 pm, Mark Dickinson <dicki...@gmail.com> wrote: > While that's true, I think the implementation of Python is > such that the Python objects -0 and 0 should always be > indistinguishable even on machines where the underlying > architecture represents integers using ones' complement or > sign-magnitude.
Hmm. I really should think before posting. A quick glance at int_and, int_xor and int_or in Objects/intobject.c: http://svn.python.org/view/python/trunk/Objects/intobject.c?view=markup shows that Python clearly fails to be independent of the hardware's choice of integer representation. E.g., on a ones' complement machine, Python would give: >>> -1 & 1 0 but the same operation on longs would give a different result: >>> -1L & 1L 1L Mark -- http://mail.python.org/mailman/listinfo/python-list
