gmusicapi allows control of Google Music with Python.

from gmusicapi import Api
api = Api()
api.login('[email protected]', 'my-password')
# => True

library = api.get_all_songs()
sweet_tracks = [track for track in library if track['artist'] == 'The Cat Empire']

playlist_id = api.create_playlist('Rad muzak')
api.change_playlist(playlist_id, sweet_tracks)

gmusicapi is not supported nor endorsed by Google.

That said, it's actively maintained, and used in a bunch of cool projects:

• Malcolm Still's command line Google Music client (screenshot)
• Ryan McGuire's GMusicFS - a FUSE filesystem linked to your music
• David Dooling's sync scripts for Banshee
• Kilian Lackhove's Google Music support for http://www.tomahawk-player.org

Check out the documentation at http://unofficial-google-music-api.readthedocs.org to get started.

Copyright 2013 Simon Weber. Licensed under the 3-clause BSD. See LICENSE.