download an album from renren.com

renren.py

#change the two variables below as your need
#then, run python renren.py, you got it
#you also need an empty folder called "download"

data = (('email', 'test@example.com'), ('password', '123456'), ('origURL', 'http://www.renren.com/Home.do'), ('domain', "renren.com"))

album_url = 'http://photo.renren.com/photo/249794035/album-484759819'


import cookielib
import urllib2
import urllib
import re
import json
import os
import time
cookie = cookielib.CookieJar()
Opener = urllib2.build_opener(urllib2.HTTPCookieProcessor(cookie))
urllib2.install_opener(Opener)
data = urllib.urlencode(data)
print 'login...'
response = urllib2.urlopen('http://www.renren.com/PLogin.do', data).read()
print 'loading the album...'
i = 0
links = []
album_dir = 'download'
while(1):
    print i
    html = urllib2.urlopen(album_url+"?curpage="+str(i))
    i += 1
    content = html.read()
    ls = re.findall(r'<a href=\"(.*)\".* class=\"img\">', content)
    if len(ls)==0:
        break
    links += [link[:link.index('?')] for link in ls]
    time.sleep(2)
for link in links:
    print link
    req = urllib2.Request(link + '/ajax')
    request = Opener.open(req, data)
    response = request.read()
    photo = json.loads(response)
    photo_url = photo.get('photo').get('large')
    filename = re.split('\/', photo_url)[-1]
    f = open(os.path.join(album_dir, filename), 'wb')
    try:
        photodata = urllib2.urlopen(photo_url).read()
    except Exception as error:
        print error
        time.sleep(5)
        links.append(link)
        continue
    f.write(photodata)
    f.close()
    time.sleep(2)