how can I delete all non-matching query results in django?

Question

Say I have a list of values

list =['value1', 'value2', 'value3', ...]

Is there a way I can run a query against a whole Db and delete any entries that don't match?

The opposite of the below almost:

models.objects.filter(value__in=list).delete()

Answer 1

You can work with .exclude(…) ^[Django-doc], so:

Model.objects.exclude(value__in=list).delete()