python实现html转ubb代码(html2ubb)

这两天在用python写一个采集器，有个功能模块是html代码转换为ubb，网上貌似没有现成程序，就自己写了个函数，顺便锻炼下自己的正则。

import re
def Html2UBB(content):
	#以下是将html标签转为ubb标签
	pattern = re.compile( '<a href=\"([sS]+&#63;)\"[^>]*>([sS]+&#63;)</a>',re.I)
	content = pattern.sub(r'[url=1]2[/url]',content)
	pattern = re.compile( '<img [^ alt="python实现html转ubb代码(html2ubb)" >]+src=\"([^\"]+)\"[^>]*>',re.I)
	content = pattern.sub(r'[img]1[/img]',content)
	pattern = re.compile( '<strong>([sS]+&#63;)</strong>',re.I)
	content = pattern.sub(r'[b]1[/b]',content)
	pattern = re.compile( '<font color=\"([sS]+&#63;)\">([sS]+&#63;)</font>',re.I)
	content = pattern.sub(r'[1]2[/1]',content)
	pattern = re.compile( '<[^>]*&#63;>',re.I)
	content = pattern.sub('',content)
	#以下是将html转义字符转为普通字符
	content = content.replace('<','<')
	content = content.replace('>','>')
	content = content.replace('&rdquo;','”')
	content = content.replace('&ldquo;','“')
	content = content.replace('"','"')
	content = content.replace('&copy;','&copy;')
	content = content.replace('&reg;','&reg;')
	content = content.replace(' ',' ')
	content = content.replace('&mdash;','—')
	content = content.replace('&ndash;','–')
	content = content.replace('&lsaquo;','&#8249;')
	content = content.replace('&rsaquo;','&#8250;')
	content = content.replace('&hellip;','…')
	content = content.replace('&','&')
	return content

使用时直接调用Html2UBB函数，返回值就是ubb码了html转ubb