AWS Lambda python boto3でAthenaクエリーを実行しその結果を読み込む方法

Athenaクエリーの結果から別の処理を行いたいため、作成しました。

Lambda pythonコード

import os
import time
import boto3


S3_OUTPUT = 's3://バケット名'
S3_BUCKET ='バケット名'
DATABASE = 'DB名'
TABLE = 'テーブル名'

# create query

# number of retries
RETRY_COUNT = 300

# main
def lambda_handler(event, context):

    query = "SELECT * FROM %s.%s where a=b;" % (DATABASE, TABLE)
    print(query)

    client = boto3.client('athena')

    response = client.start_query_execution(
        QueryString=query,
        QueryExecutionContext={
            'Database': DATABASE
        },
        ResultConfiguration={
            'OutputLocation': S3_OUTPUT,
        }
    )
    query_execution_id = response['QueryExecutionId']
    print(query_execution_id)

    for i in range(1, 1 + RETRY_COUNT):

        # get query execution
        query_status = client.get_query_execution(QueryExecutionId=query_execution_id)
        query_execution_status = query_status['QueryExecution']['Status']['State']

        if query_execution_status == 'SUCCEEDED':
            print("STATUS:" + query_execution_status)
            break

        if query_execution_status == 'FAILED':
            raise Exception("STATUS:" + query_execution_status)

        else:
            print("STATUS:" + query_execution_status)
            time.sleep(i)
    else:
        client.stop_query_execution(QueryExecutionId=query_execution_id)
        raise Exception('TIME OVER')


    # query file name
    QUERY_OUT_FILE = query_execution_id + ".csv"
    print(QUERY_OUT_FILE)

    response = s3c.get_object(Bucket = S3_BUCKET, Key = QUERY_OUT_FILE)
    ans = str(response['Body'].read().decode('utf-8'))
    lines=ans.splitlines()
    i=0
    for line in lines:
        i=i+1
        print(line)