I want to generate an html page with http response status '200 OK' in case of 
an uncaught exception in my wsgi application, instead of web server's standard 
'500 Internal Server Error' response for such case. To do so, I've made the 
following sample code:

import sys

def application(environ, start_response):
    def exception(etype, evalue, trace):
        start_response('200 OK', [('Content-Type', 'text/plain')])
        return ['Error']

    sys.excepthook = exception

    1/0

    start_response('200 OK', [('Content-Type', 'text/plain')])
    return ['OK']

But the function 'exception' is never called, and a standard '500 Internal 
Server Error' response is still generated by server in case of an uncaught 
exception.

I looked through the documentation, but unable to find the answer. Are there 
any ways to handle uncaught by try..except exceptions under mod_wsgi?
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