def handle(self, *args, **options):
		"""Call sync_subscriber on Subscribers without customers associated to them."""
		qs = get_subscriber_model().objects.filter(djstripe_customers__isnull=True)
		count = 0
		total = qs.count()
		for subscriber in qs:
			count += 1
			perc = int(round(100 * (float(count) / float(total))))
			print(
				"[{0}/{1} {2}%] Syncing {3} [{4}]".format(
					count, total, perc, subscriber.email, subscriber.pk
				)
			)
			sync_subscriber(subscriber)
Call sync_subscriber on Subscribers without customers associated to them.