No, it means people don't usually create completely useless data-holder classes in Python. Instead they use standard collections, depending on their hierarchy of needs: tuples, dicts or namedtuples.

All three of the classes in the example are basically worthless. Including SongList, which is the one with the most logic (a single line) and which you didn't even use at the end. Here's the three classes, at their most future-proof:

    from collections import namedtuple

    Song = namedtuple('Song', 'name duration artist')
    Artist = namedtuple('Artist', 'name')
    class SongList(list): pass

and as a side-note, this:

    for song in (song for song in songList if song.duration < 10):
	print "%s by %s (%d)" % (song.name, song.artist, song.duration)

is needlessly complex, why the comprehension? Just write a loop and a conditional:

    for song in songList:
        if song.duration < 10:
            print "{0.name} by {0.artist.name} ({0.duration})".format(song)