Python 2.5.1 (r251:54863, Aug 20 2007, 18:39:53)
[GCC 4.1.1 20070105 (Red Hat 4.1.1-52)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> x = 3
>>> y = 5
>>> z = x
>>> x += y
>>> print "%s %s %s" % (x, y, z)
8 5 3
>>>