您可以使用lxml解析器和xpath表达式来获取所需的内容。例如，要提取titleYouTube视频，
import lxml
from lxml import etree
youtube = etree.HTML(urllib.urlopen("http://www.youtube.com/watch?v=KQEOBZLx-Z8").read()) //enter your youtube url here
video_title = youtube.xpath("//span[@id='eow-title']/@title") //get xpath using firepath firefox addon
print ''.join(video_title)
“圣诞节的12天-圣诞颂歌”
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