Backup coverart

import httplib2
import urllib2
from bs4 import BeautifulSoup, SoupStrainer

def dl(url):

    file_name = url.split('/')[-1]
    u = urllib2.urlopen(url)
    f = open(file_name, 'wb')
    meta = u.info()
    file_size = int(meta.getheaders("Content-Length")[0])
    print "Downloading: %s Bytes: %s" % (file_name, file_size)

    file_size_dl = 0
    block_sz = 8192
    while True:
        buffer = u.read(block_sz)
        if not buffer:
            break

        file_size_dl += len(buffer)
        f.write(buffer)
        status = r"%10d  [%3.2f%%]" % (file_size_dl, file_size_dl * 100. / file_size)
        status = status + chr(8)*(len(status)+1)
        print status,

    f.close()

for i in range(2):
    n = '%0*d' % (4, i+1)
    print ("n: " + n)
    http = httplib2.Http()
    status, response = http.request('http://www.thecoverproject.net/view.php?cover_id=' + n)

    for link in BeautifulSoup(response,'html.parser').find_all('a'):
        if link.get('href').startswith("/download_cover.php?"):
            dl("http://www.thecoverproject.net" + link.get('href'))