res0nat0r

import boto3

s3 = boto3.resource('s3')
bucket = s3.Bucket('glacier-bucket')
for obj_sum in bucket.objects.all():
    obj = s3.Object(obj_sum.bucket_name, obj_sum.key)
    if obj.storage_class == 'GLACIER':
        # Try to restore the object if the storage class is glacier and
        # the object does not have a completed or ongoing restoration
        # request.