Bandcamp album ripper

bandcamp.py

from ID3 import *
import os, re, string, urllib2

embed_data = re.compile(r'var EmbedData = {.*?album_title : "([^"]+?)".*?artist : "([^"]+?)".*?};', re.DOTALL)
track_data = re.compile(r'trackinfo : \[([^\]]+?)\]', re.DOTALL)

def grab(url):
  f    = urllib2.urlopen(url)
  data = f.read()
  
  match = embed_data.findall(data)
  album, artist = match[0]
  
  album = string.replace(album, r'\/', '-')
  
  print 'Album:  {0}'.format(album)
  print 'Artist: {0}'.format(artist)
  
  match = track_data.findall(data)
  obj   = '[' + match[0] + ']'
  obj   = string.replace(obj, 'false', 'False')
  obj   = string.replace(obj, 'true',  'True')
  obj   = string.replace(obj, 'null',  'None')
  obj   = string.replace(obj, r'\/', r'/')
  obj   = eval(obj)
  
  try:
    os.makedirs('{0}/{1}'.format(artist, album))
  except OSError:
    pass
  
  trackno = 1
  for track in obj:
    filename = '{0:02} - {1}.mp3'.format(trackno, track['title'])
    print 'Downloading {0}...'.format(filename)
    
    link = urllib2.urlopen(track['file'])
    song = open('{0}/{1}/{2}'.format(artist, album, filename), 'wb')
    song.write(link.read())
    song.close()
    
    file = ID3('{0}/{1}/{2}'.format(artist, album, filename))
    file['TITLE']  = track['title']
    file['ARTIST'] = artist
    file['ALBUM']  = album
    file['TRACKNUMBER'] = str(trackno)
    
    del file
    
    trackno += 1