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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def delete(self, namespace, key):
 """Delete a specific configuration item"""

        if not self.dbconfig.key_exists(namespace, key):
            return self.make_response('No such config entry exists: {}/{}'.format(namespace, key), HTTP.BAD_REQUEST)

        self.dbconfig.delete(namespace, key)
        auditlog(event='configItem.delete', actor=session['user'].username, data={'namespace': namespace, 'key': key})
        return self.make_response('Config entry deleted')