Just tried it on Mavericks, Works for me:

    Python 2.7.5 (default, Aug 25 2013, 00:04:04) 
    [GCC 4.2.1 Compatible Apple LLVM 5.0 (clang-500.0.68)] on darwin
    Type "help", "copyright", "credits" or "license" for more information.
    >>> a = 1000
    >>> a/1000
    1
    >>>