python的urllib模块显示下载进度示例

代码如下:
 def report_hook(count, block_size, total_size):
...     print '%02d%%'%(100.0 * count * block_size/ total_size)
...
urllib.urlretrieve("http://sports.sina.com.cn/", reporthook= report_hook)
00%
01%
03%
...