one - many to many filter django

django-filtro de consulta en manytomany está vacío

Question

En Django hay una manera de filtrar en un campo manytomany vacío o nulo.

class TestModel(models.Model):
    name = models.CharField(_(''set name''), max_length=200)
    manytomany = models.ManyToManyField(''AnotherModel'', blank=True, null=True)

print TestModel.objects.filter(manytomany__is_null=True)

Answer 1

print TestModel.objects.filter(manytomany=None)