code: def detach(self):
  		
  
  		# First, wipe default source on all customers that use this.
  		Customer.objects.filter(default_source=self.id).update(default_source=None)
  
  		try:
  			# TODO - we could use the return value of sync_from_stripe_data
  			#  or call its internals - self._sync/_attach_objects_hook etc here
  			#  to update `self` at this point?
  			self.sync_from_stripe_data(self.api_retrieve().detach())
  			return True
  		except (InvalidRequestError, NotImplementedError):
  			# The source was already detached. Resyncing.
  			# NotImplementedError is an artifact of stripe-python<2.0
  			# https://github.com/stripe/stripe-python/issues/376
  			self.sync_from_stripe_data(self.api_retrieve())
  			return False
docs: Detach the source from its customer.