#!/usr/bin/env python
#encoding=utf-8

import cStringIO, urllib2, Image

url = 'http://www.01happy.com/wp-content/uploads/2012/09/bg.png'
file = urllib2.urlopen(url)
tmpIm = cStringIO.StringIO(file.read())
im = Image.open(tmpIm)

print im.format, im.size, im.mode

#//python/8463