Mod_python error: "PythonHandler ContentGenerator"

Traceback (most recent call last):

  File "/usr/lib64/python2.4/site-packages/mod_python/apache.py", line 299, in HandlerDispatch
    result = object(req)

  File "/usr/local/pie/ContentGenerator.py", line 197, in handler
    o=c.executeChildren(headNode)

  File "ContentExecutor.py", line 52, in executeChildren
    outv.append(self.executeNode(a))

  File "ContentExecutor.py", line 221, in executeNode
    eval(co,vars);

  File "/var/www/static/static/site_settings.pie", line 3, in ?

NameError: name 'path' is not defined