os.getuid() will give you the user id, but I don't know if Python has methods to look up more information from that from /etc/passwd or whereever from.
>>> import pwd,os
>>> pwd.getpwuid(os.getuid())
('michael', 'x', 1234, 100, 'Michael Str\xf6der', '/home/michael', '/bin/bash')
>>>
Ciao, Michael. -- http://mail.python.org/mailman/listinfo/python-list