在python中能够进行html和xhtml的库有很多，如HTMLParser、sgmllib、htmllib、BeautifulSoup、mxTidy、uTidylib等，这里介绍一下HTMLParser、BeautifulSoup等模块。测试用的html 文件<head>
<title> XHTML 与" HTML 4.01 "标准没有太多的不同</title>
</head>
<body>
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<a href="http://pypi.python.org/pypi" title="link1">我想你</a>
<div id="m"><img src="http://www.baidu.com/img/baidu_sylogo1.gif" width="270" height="129" ></div>
</body>
</html>以下是Python 3中的处理方法
from html.parser import HTMLParser
from html.entities import name2codepoint
import urllib.request
def getimage(addr):
u = urllib.request.urlopen(addr)
data = u.read()
filename = addr.split('/')[-1]
f = open(filename, 'wb')
f.write(data)
f.close()
print(filename + '已经生成')
class MyHtmlParser(HTMLParser):
def __init__(self):
self.taglevels = []
self.handletags = ['title','body']
self.processing = None
HTMLParser.__init__(self)
def handle_starttag(self, tag, attrs):
if tag in self.handletags:
self.data = ''
self.processing = tag
if 'a' == tag:
for name, value in attrs:
if name == 'href':
print('连接地址:'+ value)
if 'img' == tag:
for name,value in attrs:
if name == 'src':
getimage(value)
def handle_endtag(self, tag):
if tag in self.handletags:
print(str(tag) + ':' + str(tp.gettitle()))
self.processing = None
def handle_data(self, data):
if self.processing:
self.data +=data
def handle_entityref(self,name):
c = chr(name2codepoint[name])
self.handle_data(c)
def gettitle(self):
return self.data
fd = open('test1.html')
tp = MyHtmlParser()
tp.feed(fd.read())</span>