Mac OSX wallpaper changer script

import os
import feedparser
import urllib
import time
from random import randint

DIR_PATH = os.path.dirname(os.path.realpath(__file__))

def changeBG(file_name):
	os.system('''
	osascript -e 'tell application "Finder" to set desktop picture to POSIX file "%s/wallpapers/%s"'
	'''%(DIR_PATH,file_name)
	)

def unsplash():
	d = feedparser.parse('https://unsplash.com/rss')
	r = randint(0,len(d['entries'])-1)
	image_url = d['entries'][r]['url']
	epoch = str(int(time.time()*100))
	file_name = 'image_%s.png'%(epoch)
	os.system('wget "%s" -O %s/wallpapers/%s'%(image_url,DIR_PATH,file_name))

	changeBG(file_name)


def instagram():
	d=feedparser.parse('http://blog.instagram.com/tagged/photo_feature/rss')
	print len(d['entries'])
	print d['entries'][0]['description']

def folder():
	images = [i for i in os.listdir("%s/wallpapers"%DIR_PATH) if i!='.DS_Store']
	r = randint(0,len(images)-1)
	random_image = images[r]
	changeBG(random_image)



if __name__ == '__main__':
	folder()