Write a Python script to delete specific Amazon S3 objects that have delete markers

I need someone to write a Python script which will go through a selected Amazon S3 bucket and identify, then delete, any objects that have a delete marker on them and delete the underlying object. It's a versioning-enabled bucket and sometimes versioned objects are "deleted" by assigning a delete marker. I want someone to write a script to cycle through my bucket (recursively) and if the delete marker is more than X days old, I want to delete the delete marker plus all previous versions of that file. If there is no delete marker I don't want to touch the file at all, and if the delete marker is newer than X days old I don't want to touch it. Thank you