delete_persona_users_without_contributions.py

def delete_user(user):
    # Protected references to users need to be manually deleted first.
    user.key_set.all().delete()
    # Some records are worth keeping prior to deleting the user
    # but "re-assign" to the anonymous user.
    anon, _ = User.objects.get_or_create(username="Anonymous")
    user.revisionakismetsubmission_set.update(sender=anon)
    user.documentdeletionlog_set.update(user=anon)
    user.documentspamattempt_set.update(user=anon)
    user.documentspam_reviewed.update(reviewer=anon)
    user.bans.update(user=anon)
    user.bans_issued.update(by=anon)
    user.delete()


persona_users = list(User.objects.filter(socialaccount__provider='persona').exclude(socialaccount__provider='github').exclude(socialaccount__provider='google'))

print(f"found {len(persona_users)} persona-only users")

num_deleted = 0
for user in persona_users:
    if Revision.objects.filter(creator=user).exists() or AttachmentRevision.objects.filter(creator=user).exists():
        continue
    try:
        delete_user(user)
    except Exception as e:
        print(f"error while deleting {user.username} ({e})")
    else:
        num_deleted += 1

print(f"deleted {num_deleted} persona-only users")

I loaded this within a Django shell (./manage.py shell_plus) on a production web pod to remove all MDN Persona-only users who had made no contributions.