[Python-Dev] Is this a bug of the HTMLParser?

Zhang Chiyuan pluskid at gmail.com
Wed Nov 11 17:16:43 CET 2009

Hi all,

I'm using BeautifulSoup to parsing an HTML page and find it refused to
parse the page. By looking at the backtrace, I found it is a problem
with the python built-in HTMLParser.py. In fact, the web page I'm
parsing is with some Chinese characters. there is a tag like <img
src=/foo/bar.png alt=中文> , note this is legacy html page where the
attributes are not quoted. However, the regexp defined in
HTMLParser.py is :

 attrfind = re.compile(

Note that the Chinese character (also any other non-english
characters), so it fire an error parsing this. I'm not sure whether
the HTML standard allow un-quoted non-ASCII characters in the
attributes. If it allows, this seems to be a bug. and the regexp to
better be [^>\s] IMHO.

BTW: It seems something like :

var st = "<a></";

can not be parsed. :-/


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