If all you have are functions, the easiest is to create a simple dll/so and load it into Python with ctypes. http://starship.python.net/crew/theller/ctypes/tutorial.html
For more advanced needs, take a look at some of the extending options available. http://www.suttoncourtenay.org.uk/duncan/accu/integratingpython.html -- http://mail.python.org/mailman/listinfo/python-list
