'Returns the list of unique words that comprise playlist names'

def get_soup_playlist(self):

    soup = []
    for name in self.playlists:
        soup.extend(name.split('    '))
    title_trans = ''.join(((chr(c) if (chr(c).isupper() or chr(c).islower()) else '_') for c in range(256)))
    soup = [x.decode('utf-8').encode('ascii', 'ignore').upper().translate(title_trans).replace('_', '') for x in soup]
    soup = [x for x in soup if (x != '')]
    return list(set(soup))
