set/get wallpaper from simpledesktops.com on mac OS

simpledesktop.py

#!/usr/bin/env python
# vim: set et sw=4 ts=4 sts=4 fdm=syntax ff=unix fenc=utf8:
'''
    set/get wallpaper from simpledesktops.com on mac OS
    require appscript module, sudo easy_install appscript
'''
import urllib2, re, os
from appscript import *

path = './wallpaper/'
display_name = 'DELL E2311H' # my second display, the default display_name is 'Color LCD'

def getWallPaper():
    url = 'http://simpledesktops.com/browse/'
    req = urllib2.urlopen(url).read()
    p = re.compile(r'<img src="http.*\.png')
    return p.findall(req)

def setWallPaper(wallpaper):
    se = app('System Events')
    desktops = se.desktops.display_name.get()
    desk = se.desktops[its.display_name == display_name]
    desk.picture.set(mactypes.File(wallpaper))

if __name__ == "__main__":
    imgs = getWallPaper()
    for (idx, img) in enumerate(imgs):
        img = re.sub('\.([0-9]+)x([0-9]+)_q100\.png', '', img[10:])
        filename = re.sub('^.*/','',img)
        os.system('wget -c '+img+' -P ./wallpaper >/dev/null 2>&1 &')
        if idx is 0:
            wallpaper = path+filename
            setWallPaper(wallpaper)