So, something I’ve spent a lot of time doing recently, is waiting for the AppEngine Bulk Loader to finish. At the moment, there’s nothing in the admin console to bulk add, edit or delete entries in your Datastore – you can create or edit entities singly, and you can tick off and delete up to 20 at a time, but that’s your lot. The officially-sanctioned bodge for this is the Bulk Loader. Though not
