I think I'm not using Try Except properly in this Python code

Please offer some advice for this code. It all works, but I know that its messy and I don't think the Exception catching is doing what I want it to. Thanks in advance for any and all advice...

def main():
    # loop over this forever
    while True:
        print '--- Getting next job for Device: %s' % device['Name']
        # get a job from the db
        try:
            job = db.JobQ.find_one({'DeviceName':device['Name'],'Status':u'ToDo'})
        except Exception as e:
            print '!!! Error getting job for Device: %s' % device['Name']
        if job:
            # if there's a job, get all the other jobs for the same file
            try:
                job_list = [
                        j for j in db.JobQ.find(
                            {'Filename':job['Filename'],'Status':u'Todo'}
                            ).sort('Created',ASCENDING)
                        ]
            except Exception as e:
                print '!!! Error getting job list for Filename: %s' % job['Filename']

            for job in job_list:
                # mark the job 'InProgress'
                job = db.JobQ.find_and_modify(
                        {'_id':ObjectId(job['_id'])},
                        {'$set':{
                            'Status':u'InProgress','Started':datetime.now()
                            }},new=True
                        )
                print '--- Performing %s on %s' % (job['Type'], job['Filename'])
                # try to do the job.. each job raises its own exceptions
                try:
                    perform_job(job)
                    job['Status'] = u'Done'
                    job['Finished'] = datetime.now()
                    db.JobQ.save(job,safe=True)
                except Exception as e:
                    # if any job fails, ditch the rest of the jobs and move on
                    print '!!! Error performing job: %s' % e
                    print 'Subsequent jobs for this filename will not run: %s'\
                            % job['Filename']
                    for job in job_list:
                        job['Finished'] = datetime.now()
                        job['Status'] = u'Failed'
                        db.JobQ.save(job,safe=True)
        else:
            print '--- No more jobs for Device: %s' % device['Name']

        sleep(device['CycleTime'])


if __name__ == '__main__':
    main()