pycollada is a python module for creating, editing and loading COLLADA, which is a COLLAborative Design Activity for establishing an interchange file format for interactive 3D applications.
The library allows you to load a COLLADA file and interact with it as a python object. In addition, it supports creating a collada python object from scratch, as well as in-place editing.
You can get help at the pycollada mailing list.
See the pycollada Documentation for more information.