title: Tool for automatically creating data for django model
body: <p>I want to test models which are explained in <a href="https://docs.djangoproject.com/en/3.1/topics/db/aggregation/" rel="nofollow noreferrer">the Django tutorial</a>. Is there an automatic way to fill them with sample data? It's one of them:</p>
  <pre><code>class Book(models.Model):
      name = models.CharField(max_length=300)
      pages = models.IntegerField()
      price = models.DecimalField(max_digits=10, decimal_places=2)
      rating = models.FloatField()
      authors = models.ManyToManyField(Author)
      publisher = models.ForeignKey(Publisher, on_delete=models.CASCADE)
      pubdate = models.DateField()
  </code></pre>
  <p>Any suggestion?</p>