populate.py

import os
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'courses.settings')

from gpaconvert.models import GradeSource, DiscreteRule


GradeSource.objects.all().delete()

monsters_uni = GradeSource.objects.create(country='CA',
                                          institution='Monsters University',
                                          status='ACTI')
monsters_uni.discrete_rules.add(DiscreteRule(lookup_value='Super Sully',
                                             transfer_value='A'))
monsters_uni.discrete_rules.add(DiscreteRule(lookup_value='Mediocre Mike',
                                             transfer_value='C'))
monsters_uni.save()