iam-s3-sqs-sns-video-transcoder.py 文件源码

def bucket_exists(self, bucket_name):
        """
        Returns ``True`` if a bucket exists and you have access to
        call ``HeadBucket`` on it, otherwise ``False``.
        """
        try:
            self.s3.meta.client.head_bucket(Bucket=bucket_name)
            return True
        except ClientError:
            return False