Is it possible to create a User instance specifying only pk?

Question

Django

there is a model

class Test(models.Model):
    user = models.OneToOneField(User)
    text = models.TextField()

Is it possible to somehow create an object, assign the user PK field?
For example
Test(user=1, text='123')
Tried through lookup, it doesn't work either :/Test(user__pk=1, text='123')

Answer 1

Test(user_id=1, text='123')