求教：AttributeError: 'NoneType' object has no attribute 'name'
import re
from bs4 import BeautifulSoup
html_doc = """<html><head><title>The Dormouse's story</title></head><body><p class="title"><b>The Dormouse's story</b></p>
<p class="story">Once upon a time there were three little sisters; and their names were<a href="http://example.com/elsie" class="sister" id="link1">Elsie</a>,<a href="http://example.com/lacie" class="sister" id="link2">Lacie</a> and<a href="http://example.com/tillie" class="sister" id="link3">Tillie</a>;and they lived at the bottom of a well.</p>
<p class="story">...</p>"""
soup=BeautifulSoup(html_doc,'html.parser',from_encoding='utf8')
print '获取所有的链接'
links=soup.find_all('a')
for link in links:
print link.name,link['href'],link.get_text()
print '获取Lacie的链接'
link_node=soup.find('a',href='http://example.com/lacie')
print link_node.name,link_node['href'],link_node.get_text()
print '正则匹配'
link_node=soup.find('a',href=re.compile(r'ill'))
print link_node.name,link_node['href'],link_node.get_text()
print '获取p段落文字'
p_node = soup.find('p',class_= 'title')
print p_node.name,p_node.get_text()
