flask s3 proxy

gistfile1.txt

@route('/static/<path:path>')
def static_proxy(path):
    conn = boto.s3.connection.S3Connection(ACCESS_KEY, SECRET_ACCESS_KEY)
    bucket = conn.get_bucket(BUCKET_NAME, validate=False)
    key = boto.s3.key.Key(bucket)
    key.key = path

    try:
        key.open_read()
        headers = dict(key.resp.getheaders())
        return Response(key, headers=headers)
    except boto.exception.S3ResponseError as e:
        return flask.Response(e.body, status=e.status, headers=key.resp.getheaders())

How can i download , multiple files using this?