[mod_python] capturing and handling python errors in mod_python

FYI, support of HEAD has already been incorporated into upcoming
mod_python 3.2 release.

Waitman Gobble wrote ..
> 
> Changing publisher.py as follows:
> 
> def handler(req):
> 
>     req.allow_methods(["GET", "POST","HEAD"])
>     if req.method not in ["GET", "POST", "HEAD"]:
>         raise apache.SERVER_RETURN, apache.HTTP_METHOD_NOT_ALLOWED
> 
> (added "HEAD" to two lines)
> 
> seems to allow proper HEAD requests:
> 
> # HEAD http://pyblog.com/index/d
> 404 Not Found
> 
> # HEAD http://pyblog.com/doit/naughty
> 200 OK
> 
> # HEAD http://pyblog.com/doit/good
> 500 Internal Server Error
> 
> If you know why HEAD should be forbidden, let me know.
> 
> I'd still like to catch uncaught exceptions somehow.
> 
> Thank you,
> 
> -- 
> Waitman Gobble
> http://waitman.net/
> (707) 237-6921
> 
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