python实现html转ubb代码(html2ubb)

import re
def Html2UBB(content):
	#以下是将html标签转为ubb标签
	pattern = re.compile( '<a href=\"([sS]+?)\"[^>]*>([sS]+?)</a>',re.I)
	content = pattern.sub(r'[url=1]2[/url]',content)
	pattern = re.compile( '<img[^>]+src=\"([^\"]+)\"[^>]*>',re.I)
	content = pattern.sub(r'[img]1[/img]',content)
	pattern = re.compile( '<strong>([sS]+?)</strong>',re.I)
	content = pattern.sub(r'[b]1[/b]',content)
	pattern = re.compile( '<font color=\"([sS]+?)\">([sS]+?)</font>',re.I)
	content = pattern.sub(r'[1]2[/1]',content)
	pattern = re.compile( '<[^>]*?>',re.I)
	content = pattern.sub('',content)
	#以下是将html转义字符转为普通字符
	content = content.replace('&lt;','<')
	content = content.replace('&gt;','>')
	content = content.replace('&rdquo;','”')
	content = content.replace('&ldquo;','“')
	content = content.replace('&quot;','"')
	content = content.replace('&copy;','©')
	content = content.replace('&reg;','®')
	content = content.replace('&nbsp;',' ')
	content = content.replace('&mdash;','―')
	content = content.replace('&ndash;','?C')
	content = content.replace('&lsaquo;','‹')
	content = content.replace('&rsaquo;','›')
	content = content.replace('&hellip;','…')
	content = content.replace('&amp;','&')
	return content