s3-auto-tagging

import boto3

s3client = boto3.client('s3')

def lambda_handler(event, context):
    try:
        print(event)
        bucket_name=event['detail']['requestParameters']['bucketName']
        print(bucket_name)
        createdBy = event['detail']['userIdentity']['arn']
        bucket_tagging = s3client.put_bucket_tagging(
            Bucket=bucket_name,
            Tagging={
                'TagSet': [
                    {
                        'Key': 'created-by',
                        'Value': createdBy
                    },
                ]
            }
        )
    except Exception as e:
        print(e)