Not a very active group but pyKML I have to say is jolly useful. Website says you'd like examples of KML use. Here's one to pull out all GroundOverlay tag. Will work for most things. Idea of the greater script is to use gdal to georeference images for "proper" GIS apps instead of relying on overlays.
root = parser.fromstring(kml_str)
overlay = {}
overlay['href'] = x.Icon.href
overlay['north'] = x.LatLonBox.north
overlay['south'] = x.LatLonBox.south
overlay['east'] = x.LatLonBox.east
overlay['west'] = x.LatLonBox.west
GeorefImage(overlay)