AWS Lambda to find all empty buckets in AWS S3 account

Find Search Empty s3 buckets AWS Lambda (python 3.7)

import json
import boto3
import array

s3 = boto3.resource('s3')

def lambda_handler(event, context):
    empty_buckets = [];
    for bucket in s3.buckets.all():
        is_empty = [] == [i for i in bucket.objects.limit(1).all()]

        if is_empty:
            empty_buckets.append(bucket.name)
        
    return {
        'body': json.dumps(empty_buckets)
}
 

Required AWS Role

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Sid": "VisualEditor2",
            "Effect": "Allow",
            "Action": [
                "s3:ListAllMyBuckets",
                "s3:ListBucket",
                "s3:GetObject"
            ],
            "Resource": "*"
        }
    ]
}

Inspired by https://ls3.io/posts/find_rm_empty_s3_buckets/ and https://medium.com/@alannewcomer/how-do-i-see-which-s3-buckets-are-empty-76cdbb67da86