How do you embed album art into an MP3 using Python?

Here is how to add example.png as album cover into example.mp3 with mutagen:

from mutagen.mp3 import MP3from mutagen.id3 import ID3, APIC, erroraudio = MP3('example.mp3', ID3=ID3)# add ID3 tag if it doesn't existtry:    audio.add_tags()except error:    passaudio.tags.add(    APIC(        encoding=3, # 3 is for utf-8        mime='image/png', # image/jpeg or image/png        type=3, # 3 is for the cover image        desc=u'Cover',        data=open('example.png').read()    ))audio.save()

I've used the eyeD3 module to do this exact thing.

def update_id3(mp3_file_name, artwork_file_name, artist, item_title):        #edit the ID3 tag to add the title, artist, artwork, date, and genre    tag = eyeD3.Tag()    tag.link(mp3_file_name)    tag.setVersion([2,3,0])    tag.addImage(0x08, artwork_file_name)    tag.setArtist(artist)    tag.setDate(localtime().tm_year)    tag.setTitle(item_title)    tag.setGenre("Trance")    tag.update()

Looks like you have to add a special type of frame to the MP3. See the site on ID3 tags

Also the tutorial for mutagen implies that you can add ID3 tags in mutagen see