How to get the difference of two querysets in Django?

Question

I have to querysets. alllists and subscriptionlists

alllists = List.objects.filter(datamode = \'A\')
subscriptionlists = Membership.objects.filter(member__id         


        

Answer 1

Since Django 1.11, QuerySets have a difference() method amongst other new methods:

# Capture elements that are in qs_all but not in qs_part
qs_diff = qs_all.difference(qs_part)    

Also see: https://stackoverflow.com/a/45651267/5497962