Mark Cederholm has a presentation on accessing arcobjects from python. It requires Visual Studio (Express is ok) and the Windows SDK in addition to arcgis and python.
Recipe
DemoTool.idl
if necessary (e.g. path to esriSystemUI.olb)midl DemoTool.idl
(creates DemoTool.tbl needed for registering COM objects)python DemoTool.py -regserver
You are now ready to access arcobjects with python:
from Snippets import GetLibPath, InitStandalone from comtypes.client import GetModule, CreateObject m = GetModule(GetLibPath() + "esriGeometry.olb") InitStandalone() p = CreateObject(m.Point, interface=m.IPoint) p.PutCoords(2,3) print p.X, p.Y