[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/test_runner/models.py b/tests/test_runner/models.py
index 9b26dbfc1e..80bf8dd8c7 100644
--- a/tests/test_runner/models.py
+++ b/tests/test_runner/models.py
@@ -4,13 +4,13 @@ from django.db import models
 class Person(models.Model):
     first_name = models.CharField(max_length=20)
     last_name = models.CharField(max_length=20)
-    friends = models.ManyToManyField('self')
+    friends = models.ManyToManyField("self")
 
 
 # A set of models that use a non-abstract inherited 'through' model.
 class ThroughBase(models.Model):
     person = models.ForeignKey(Person, models.CASCADE)
-    b = models.ForeignKey('B', models.CASCADE)
+    b = models.ForeignKey("B", models.CASCADE)
 
 
 class Through(ThroughBase):