Delete all non latest s3 objects

delete-old-versions.py

#!/usr/bin/env python

import json
import sys

# https://docs.aws.amazon.com/cli/latest/reference/s3api/delete-objects.html

# USAGE:
# aws s3api list-object-versions --bucket > versions.json
# ./delete-old-versions.py ./versions.json > delete.json
# aws s3api delete-objects --bucket bucket --delete file://delete.json

out = { "Objects" : [], "Quiet": False }

with open(sys.argv[1]) as f:
    data = json.load(f)

    for item in data['Versions']:
        if item['IsLatest'] == False:
            out['Objects'].append({"Key": item['Key'], "VersionId": item['VersionId']})

print(json.dumps(out))