[Zope] How do I get remote http error code?

Hi, I'm struggling to find a way to return the http error code (i.e. 404, 401, 301, 201) using an External Script and urllib. I can read the file using urllib.urlopen(url).read() and can get general info using urllib.urlopen(url).info() - however I can't find how to return the error code (i.e if the remote page doesn't exist). Anyone know how to resolve this? Cheers, Duane