这段代码通过urllib2打开远程图片，通过cStringIO读取文件内容，不用保存到磁盘即可读取图片文件的信息

#!/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