import?urllib2
import?re
req?=?urllib2.urlopen('http://www.xianlaiwan.cn/course/list')
listurl?=?re.findall(r'//img.+\.jpg',?req.read())
fullurls?=?set()
for?url?in?listurl:
fullurl?=?'https:'?+?url
fullurls.add(fullurl)
print?fullurls
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