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Download albumcover van Amazon met Python

7 November 2009

Ik ben de laatste tijd bezig met een project genaamd “CoverGloobus” (ik zal hier niet verder over uitwijden, zie: http://www.launchpad.net/covergloobus), en daarvoor had ik een functie nodig die albumcovers van Amazon downloadde. En de uitkomst daarvan is het onderstaande scriptje Ik heb wel een beetje valsgespeeld, hij haalt namelijk de link naar het plaatje op via de zoekmachine albumart.org In ieder geval, dit is hem!

#!/usr/bin/env python

# AmazonCovers.py
#  Program to fetch albumcovers from Amazon (using albumart.org)
#  Version 1.0
#  Copyright 2009 Jaap Broekhuizen <jaapz.b@gmail.com>

# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 3
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

import urllib, re, os, sys

class AmazonCovers:
	def usage(self):
		print "usage: ./AmazonCovers.py [artist] [album]"
	
	def fetch_cover(self, artist, album):
		# make the vars lower
		artist = artist.lower()
		album = album.lower()
		
		# first check if we already have the cover
		file = "~/.covers/"+artist+"-"+album+".jpg"
		file = os.path.expanduser(file)
		
		if os.path.isfile(file):
			print "file already exists!"
			return file
		
		# strip the vars from spaces
		artist = artist.replace(" ", "+")
		album = album.replace(" ", "+")
		
		# cover is not yet downloaded!
		URL = "http://www.albumart.org/index.php?srchkey="+artist+"+"+album+"&searchindex=Music"
		
		web = urllib.urlopen(URL)
		webcode = web.read()
		
		regex = re.compile("<img src=\"(.*)\" border=\"0\" class=\"image_border\"")
		
		# find the url we need
		try:
			search = re.search(regex, webcode)
			path = search.group(1)
			print path
		except:
			return 0
		
		# actually download it
		urllib.urlretrieve(path, file)
		
		# return the path nice and sweet
		return file
		
if __name__ == "__main__":
	amazon = AmazonCovers()
	
	if sys.argv[1] == "--usage":
		amazon.usage()
	else:
		artist = sys.argv[1]
		album = sys.argv[2]
	
		amazon.fetch_cover(artist, album)

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