These scripts take backups of the Cloud Datastore database, save them to a Cloud Bucket, and export them to BigQuery.
For cloud_datastore_admin.py, which takes the backups, I just followed the instructions here.
For bigquery_import.py, I made some adjustments to the original cloud_datastore_admin.py to get it to import the backups to BigQuery.
bigquery_import.py is dependent on cloud_datastore_admin.py having run on the same calendar day and to have generated the backups that it looks for to export to BigQuery. These backups are expected to be named as parts-YYYY-MM-DD.