Django Retrieve all Certifications based on names of the certificate -

i want retrieve prospects have of certifications example, if certifications a, b & c, prospects have a, b & c should returned. if have more abc or less abc, should ignored.

in model.py

class certification(models.model):     name = models.charfield(max_length=200, null=true, blank=true)      def __str__(self):         return "%s" % self.name   class prospect(models.model):     certification = models.manytomanyfield(certification, blank=true, related_name="certification_prospects") 

how can write django query retrieve prospects have strictly certification of a, b & c?

from django.db.models import count certificates = certification.objects.count() prospect = prospect.objects.annotate(total=count('certification')).filter(total=certificates) 

prospect var return object have certificates