Find all S3 buckets that are empty and prompt to delete them

rm_empty_s3_buckets.py

#!/usr/bin/env python3
"""
Lyle Scott, III  // lyle@ls3.io

$ python3 rm_empty_s3_buckets.py  --help
usage: rm_empty_s3_buckets.py [-h] [-p PROFILE]

optional arguments:
  -h, --help            show this help message and exit
  -p PROFILE, --profile PROFILE
                        Use a specific profile for bucket operations. Default:
                        "default" profile in ~/.aws/config or AWS_PROFILE
                        environment variable

python3 rm_empty_s3_buckets.py
Delete S3 bucket foobarmancan?
y/N: y
> Deleted: foobarmancan
Delete S3 bucket bingbangboom?
y/N:
"""
from __future__ import print_function

import argparse
import sys

import boto3
from botocore.exceptions import ClientError


def find_empty_buckets(profile=None):
    """Delete a bucket (and all object versions)."""
    kwargs = {}
    if profile:
        kwargs['profile_name'] = profile

    session = boto3.Session(**kwargs)
    s3 = session.resource(service_name='s3')

    for bucket in s3.buckets.all():
        is_empty = [] == [i for i in bucket.objects.limit(1).all()]

        # Bail if the S3 bucket isn't empty.
        if not is_empty:
            continue

        # Prompt if the S3 bucket should be deleted and do so.
        try:
            i = input('Delete S3 bucket {}?\ny/N: '.format(bucket.name))
            if i.lower() == 'y':
                bucket.object_versions.delete()
                bucket.delete()
                print('> Deleted: {}'.format(bucket.name))
        except ClientError as ex:
            print('error: {}'.format(ex.response['Error']))
            sys.exit(1)

    print('done')


def _parse_args():
    """A helper for parsing command line arguments."""
    parser = argparse.ArgumentParser()
    parser.add_argument('-p', '--profile', default='',
                        help='Use a specific profile for bucket operations. '
                             'Default: "default" profile in ~/.aws/config or '
                             'AWS_PROFILE environment variable')
    return parser.parse_args()


def _main():
    """Script execution handler."""
    args = _parse_args()
    find_empty_buckets(profile=args.profile)


if __name__ == '__main__':
    _main()