How to analyze rare exceptions in django/python projects by G. Dumpleton

django-exceptions-tracedump.txt

from: http://groups.google.com/group/modwsgi/browse_thread/thread/f289c8167923aab7

The problem with Django is that there are certain circumstances where
it will hide the actual error message and traceback and replace it
will a higher level exception, but with the traceback then being where
that higher level exception was raised. This is one such case.

To try and find the real location of the exception add the following
to your WSGI script file.

import traceback
import sys

def dump_exception(callable):
    def wrapper(*args, **kwargs):
        try:
            return callable(*args, **kwargs)
        except:
            traceback.print_exception(*sys.exc_info())
    return wrapper

import django.core.urlresolvers

urlresolvers.get_callable = dump_exception(urlresolvers.get_callable)

This wraps the call which is doing the lookup and will dump out the
error message it raises before the traceback gets thrown away.

Please provide the resulting traceback as am quite curious to see it
and what it shows.

Graham