Blender as a Python Module: Import COLLADA

Question

I followed this post to install blender as a python module. I realize that this isn't officially supported, but I thought I'd ask for help anyways.

I'm trying to import a COLLADA (.dae) file. In blender's scripting mode, this is done by the method bpy.ops.wm.collada_import(filepath=...). However, when I checked to see if this method exists, I got

>>> bpy.ops.wm.collada_import
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python3.4/dist-packages/2.74/scripts/modules/bpy/ops.py", line 207, in __repr__
    as_string = op_as_string(idname)
AttributeError: _bpy.ops.as_string: operator "WM_OT_collada_import" could not be found

Other import methods, such as bpy.ops.import_scene.autodesk_3ds work, so I'm wondering if there's an easy way to fix this.