Boto3 delete objects with BucketObjectsCollection

I am using the boto3 S3 resource to access objects in S3 and later delete all the files. However, the deletion operation could end up leaving one file un-deleted from time to time.

Here is what my code looks like:

s3 = boto3.resource("s3")

# Iterate through a list of prefixes
for some_prefix in list_of_prefixes:
    bucket = s3.Bucket("some_bucket_name")

    # For each prefix, get all the objects with the prefix, do some processing, and finally delete all the processed objects
    bucket_objects = bucket.objects.filter(some_prefix)
    ... <do something with the objects>
    bucket_objects.delete()

To troubleshoot, I added logging in the <do something with the objects> section and made sure that the un-deleted file was part of the bucket_objects BucketObjectsCollection.

Here are more details:

• There are about ~200 files under each prefix
• There were no exceptions or errors raised by the S3 resource

Thank you so much for your help!