How to convert a list in to queryset django

Question

I have a queryset(which is filtered actually) as below

posts = [, , , , 

        

Answer 1

Actually i had found one way by googling, but this may take a lot of time for querying/generating results if there are huge number of records

custom_list = [rec.id for rec in posts if 'string_or_field' in rec.tags.all()]

querset = MyModel.objects.filter(id__in=custom_list)