[4.0.x] Refs #33476 -- Reformatted code with Black.

Backport of 9c19aff7c7561e3a82978a272ecdaad40dda5c00 from main.

1 files changed, 2 insertions, 2 deletions

diff --git a/tests/aggregation/models.py b/tests/aggregation/models.py
index cfc261abcc..0d3a8a2713 100644
--- a/tests/aggregation/models.py
+++ b/tests/aggregation/models.py
@@ -4,7 +4,7 @@ from django.db import models
 class Author(models.Model):
     name = models.CharField(max_length=100)
     age = models.IntegerField()
-    friends = models.ManyToManyField('self', blank=True)
+    friends = models.ManyToManyField("self", blank=True)
     rating = models.FloatField(null=True)
 
     def __str__(self):
@@ -27,7 +27,7 @@ class Book(models.Model):
     rating = models.FloatField()
     price = models.DecimalField(decimal_places=2, max_digits=6)
     authors = models.ManyToManyField(Author)
-    contact = models.ForeignKey(Author, models.CASCADE, related_name='book_contact_set')
+    contact = models.ForeignKey(Author, models.CASCADE, related_name="book_contact_set")
     publisher = models.ForeignKey(Publisher, models.CASCADE)
     pubdate = models.DateField()