A script to delete all objects, versions and delete markers from an s3 bucket.

delete_all_objects.py

#!/usr/bin/env python
import boto3

client = boto3.client('s3')
Bucket = 'a-bucket'
Prefix = 'a-prefix' # leave blank to delete the entire contents
IsTruncated = True
MaxKeys = 1000
KeyMarker = None

while IsTruncated == True:
        if not KeyMarker:
                version_list = client.list_object_versions(
                        Bucket=Bucket,
                        MaxKeys=MaxKeys,
                        Prefix=Prefix)
        else:
                version_list = client.list_object_versions(
                        Bucket=Bucket,
                        MaxKeys=MaxKeys,
                        Prefix=Prefix,
                        KeyMarker=KeyMarker)

	try:
        	objects = []
        	versions = version_list['Versions']
        	for v in versions:
                	objects.append({'VersionId':v['VersionId'],'Key': v['Key']})
        	response = client.delete_objects(Bucket=Bucket,Delete={'Objects':objects})
		print response
	except:
		pass

        try:
		objects = []
        	delete_markers = version_list['DeleteMarkers']
        	for d in delete_markers:
                	objects.append({'VersionId':d['VersionId'],'Key': d['Key']})
        	response = client.delete_objects(Bucket=Bucket,Delete={'Objects':objects})
		print response
	except:
		pass

        IsTruncated = version_list['IsTruncated']
        KeyMarker = version_list['NextKeyMarker']

Since the KeyMarker property is no longer available at this point, I changed and tested the above code as following.
Heads up: ChatGPT could not help me with this requirement.

#!/usr/bin/env python
import boto3

def delete_markers(bucket_name, prefix):
    client = boto3.client('s3')
    Bucket = bucket_name
    Prefix = prefix
    IsTruncated = True
    MaxKeys = 1000
    
    while IsTruncated == True:
        version_list = client.list_object_versions(
            Bucket=Bucket,
            MaxKeys=MaxKeys,
            Prefix=Prefix
        )
        try:
            objects = []
            versions = version_list ['Versions']
            for v in versions:
                objects.append({'VersionId':v['VersionId'],'Key':v['Key']})
                response = client.delete_objects(Bucket=Bucket,Delete={'Objects':objects})
                print (response)
        except:
            pass
        try:
            objects = []
            delete_markers = version_list['DeleteMarkers']
            for d in delete_markers:
                objects.append({'VersionId':d['VersionId'],'Key': d['Key']})
                response = client.delete_objects(Bucket=Bucket,Delete={'Objects':objects})
                print (response)
        except:
            pass
        IsTruncated = version_list['IsTruncated']

delete_markers('my_bucket_name','my/path')

Hi @giansmart ,

Thanks a lot above script worked smootly :)