g4:~ thomas$ python2.5Python 2.5.2 (r252:60911, Feb 29 2008, 16:18:01) 
[GCC 4.0.1 (Apple Computer, Inc. build 5370)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import hashlib
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/opt/local/lib/python2.5/hashlib.py", line 133, in <module>
    md5 = __get_builtin_constructor('md5')
  File "/opt/local/lib/python2.5/hashlib.py", line 60, in __get_builtin_constructor
    import _md5
ImportError: No module named _md5
>>> ^D