django check for empty onetoone exists

from django.db import models

class MyModel(models.Model):
    # Your fields go here

class AnotherModel(models.Model):
    my_model = models.OneToOneField(MyModel, on_delete=models.CASCADE, related_name='another_model')

# Check if MyModel instance has an associated AnotherModel instance
my_model_instance = MyModel.objects.get(pk=1)
has_another_model = hasattr(my_model_instance, 'another_model')