python学习--下载--下载固定文件显示下载百分之的进度

#!/usr/bin/python#encoding:utf-8import urllibimport osdef Schedule(a,b,c):   '''    a:已经下载的数据块   b:数据块的大小   c:远程文件的大小   '''   per = 100.0*a*b/c   if per > 100:      per = 100   print '%.2f%%' % perurl = 'http://download.dinpay.com/member/DinpayPusreV2.1.15_08.apk'#local = url.split('/')[-1]local = os.path.join('f://APK/','DinpayPusreV2.1.15_08-1.apk')urllib.urlretrieve(url,local,Schedule)