在这里尝试使用时似乎可以正常工作

Seems to work when I try it here

import urllib2
from BeautifulSoup import BeautifulSoup
page = urllib2.urlopen('http://www.***.com/')
soup = BeautifulSoup(page)
tags=soup.findAll('img')
print "\n".join(set(tag['src'] for tag in tags))

生产对我来说看起来不错的

Produces this which looks OK to me

http://i1.ytimg.com/vi/D9Zg67r9q9g/market_thumb.jpg?v=723c8e
http://s.ytimg.com/yt/img/pixel-vfl3z5WfW.gif
//s.ytimg.com/yt/img/pixel-vfl3z5WfW.gif
/gen_204?a=fvhr&v=mha7pAOfqt4&nocache=1337083207.97
http://i3.ytimg.com/vi/fNs8mf2OdkU/market_thumb.jpg?v=4f85544b
http://i4.ytimg.com/vi/CkQFjyZCq4M/market_thumb.jpg?v=4f95762c
http://i3.ytimg.com/vi/fzD5gAecqdM/market_thumb.jpg?v=b0cabf
http://i3.ytimg.com/vi/2M3pb2_R2Ng/market_thumb.jpg?v=4f0d95fa
//i2.ytimg.com/vi/mha7pAOfqt4/hqdefault.jpg