使用Python的urllib2模块处理url和图片的技巧两则

获取带有中文参数的url内容
对于中文的参数如果不进行编码的话，python的urllib2直接处理会报错，我们可以先将中文转换成utf- 8编码，然后使用urllib2.quote方法对参数进行url编码后传递。

content = u'你好 sharejs.com'
content = content.encode('utf-8')
content = urllib2.quote(content)
api_url = 'http://www.sharejs.com/q=%s'%content
res = urllib2.urlopen(api_url)

获取远程图片的大小和尺寸
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

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