from html.parser import HTMLParser
class MyHTMLParser(HTMLParser):
 def handle_starttag(self, tag, attrs):
 print("Encountered a start tag:", tag)
 def handle_endtag(self, tag):
 print("Encountered an end tag :", tag)
 def handle_data(self, data):
 print("Encountered some data :", data)
parser = MyHTMLParser()
# now let's find some bugs
parser.feed('<a>foo&bar</a>')
"""
Encountered a start tag: a
Encountered some data : foo
Encountered an end tag : a
"""
parser.feed('<a>foo & bar</a>')
"""
Encountered a start tag: a
Encountered some data : foo
Encountered some data : &
Encountered some data : bar
Encountered an end tag : a
"""
parser.feed('<a>foo &amp; bar</a>')
"""
Encountered a start tag: a
Encountered some data : foo
Encountered some data : bar
Encountered an end tag : a
"""
parser.feed('<a>foo&amp;bar</a>')
"""
Encountered a start tag: a
Encountered some data : foo
Encountered some data : bar
Encountered an end tag : a
"""</div><div class="naked_ctrl">
<form action="/index.cgi/contrast" method="get" name="gate">
<p><a href="http://altstyle.alfasado.net">AltStyle</a> によって変換されたページ <a href="https://bugs.python.org/file38089/htmlparser_bugs.py">(-&gt;オリジナル)</a>
/ <label>アドレス: <input type="text" name="naked_post_url" value="https://bugs.python.org/file38089/htmlparser_bugs.py" size="22" /></label> <label>モード: <select name="naked_post_mode">
<option value="default">デフォルト</option>
<option value="speech">音声ブラウザ</option>
<option value="ruby">ルビ付き</option>
<option value="contrast" selected="selected">配色反転</option>
<option value="larger-text">文字拡大</option>
<option value="mobile">モバイル</option>
</select>
<input type="submit" value="表示" />
</p>
</form>
</div>