def create_spot_datafeed_subscription(self, bucket, prefix):
        params = {'Bucket' : bucket}
        if prefix:
            params['Prefix'] = prefix
        return self.get_object('CreateSpotDatafeedSubscription',
                               params, SpotDatafeedSubscription, verb='POST')
Create a spot instance datafeed subscription for this account.
dataset/ETHPy150Open darcyliu/storyboard/boto/ec2/connection.py/EC2Connection.create_spot_datafeed_subscription