def create():
    f1 = User.objects.create(first_name = 'u1',last_name='u1')
    f1.save()
    f2 = User.objects.create(first_name='u2', last_name='u2')
    f2.save()
    f3 = User.objects.create(first_name='u3', last_name='u3')
    f3.save()

    blog1 = f1.blog_set.create(title='blog1')
    blog1.save()
    blog2 = f1.blog_set.create(title='blog2')
    blog2.save()