python正则报错AttributeError:'NoneTyep'object....，,import urlli

python正则报错AttributeError:'NoneTyep'object....，,import urlli

import urllibimport redef cbk(a, b, c):      per = 100.0 * a * b / c      if per > 100:          per = 100      print '%.2f%%' % per  def getHtml(url):page = urllib.urlopen(url)html = page.read()page.close()return htmldef getVideo(html):reg = 'src="(.*?.mp4)" 'reg2='\d{2}-\w+\.mp4$'videore = re.compile(reg)videourl = videore.findall(html)for vurl in videourl:print vurla=re.search(reg2, vurl)res=a.group()urllib.urlretrieve(vurl, res,cbk)nu = [11,12,13]for num in nu:lc =  getHtml(r"http://www.linuxcast.net/public/cast_show/%s"%(num))print getVideo(lc)

报错如下：

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