python 打印html源码中xpath

实例:

#coding:utf-8
from lxml import etree
import urllib
url=urllib.urlopen('http://www.baidu.com').read().decode('utf-8')
htm=etree.HTML(url)
htree=etree.ElementTree(htm)
print htree
print htm.iter()
###依次打印出每个元素的文本内容和xpath路径
for t in htm.iter():
    print t.text
    print htree.getpath(t)