How to add a value to the base to the associated object?

Question

Django

Hello.
There are models

class Autor(models.Model):
    first_name = models.CharField(max_length=100)

class Books(models.Model):
    autor = models.ForeignKey(Autor)
    title = models.CharField(max_length=100)
    year = models.CharField(max_length=20)

Please tell me how to add a few more books to an existing author through ORM.
Thanks in advance

Answer 1

book = Books(autor_id = id, title = 'title', year = '2017')
book.save()

Answer 2

autor.books.add(books)