1 files changed, 28 insertions, 21 deletions
diff --git a/tests/admin_filters/models.py b/tests/admin_filters/models.py
index 90b9cab2ac..53b471dd90 100644
--- a/tests/admin_filters/models.py
+++ b/tests/admin_filters/models.py
@@ -1,7 +1,5 @@
 from django.contrib.auth.models import User
-from django.contrib.contenttypes.fields import (
-    GenericForeignKey, GenericRelation,
-)
+from django.contrib.contenttypes.fields import GenericForeignKey, GenericRelation
 from django.contrib.contenttypes.models import ContentType
 from django.db import models
 
@@ -13,30 +11,35 @@ class Book(models.Model):
         User,
         models.SET_NULL,
         verbose_name="Verbose Author",
-        related_name='books_authored',
-        blank=True, null=True,
+        related_name="books_authored",
+        blank=True,
+        null=True,
     )
     contributors = models.ManyToManyField(
         User,
         verbose_name="Verbose Contributors",
-        related_name='books_contributed',
+        related_name="books_contributed",
         blank=True,
     )
     employee = models.ForeignKey(
-        'Employee',
+        "Employee",
         models.SET_NULL,
-        verbose_name='Employee',
-        blank=True, null=True,
+        verbose_name="Employee",
+        blank=True,
+        null=True,
     )
     is_best_seller = models.BooleanField(default=0, null=True)
     date_registered = models.DateField(null=True)
-    availability = models.BooleanField(choices=(
-        (False, 'Paid'),
-        (True, 'Free'),
-        (None, 'Obscure'),
-    ), null=True)
+    availability = models.BooleanField(
+        choices=(
+            (False, "Paid"),
+            (True, "Free"),
+            (None, "Obscure"),
+        ),
+        null=True,
+    )
     # This field name is intentionally 2 characters long (#16080).
-    no = models.IntegerField(verbose_name='number', blank=True, null=True)
+    no = models.IntegerField(verbose_name="number", blank=True, null=True)
 
     def __str__(self):
         return self.title
@@ -64,9 +67,11 @@ class Employee(models.Model):
 
 class TaggedItem(models.Model):
     tag = models.SlugField()
-    content_type = models.ForeignKey(ContentType, models.CASCADE, related_name='tagged_items')
+    content_type = models.ForeignKey(
+        ContentType, models.CASCADE, related_name="tagged_items"
+    )
     object_id = models.PositiveIntegerField()
-    content_object = GenericForeignKey('content_type', 'object_id')
+    content_object = GenericForeignKey("content_type", "object_id")
 
     def __str__(self):
         return self.tag
@@ -77,11 +82,13 @@ class Bookmark(models.Model):
     tags = GenericRelation(TaggedItem)
 
     CHOICES = [
-        ('a', 'A'),
-        (None, 'None'),
-        ('', '-'),
+        ("a", "A"),
+        (None, "None"),
+        ("", "-"),
     ]
-    none_or_null = models.CharField(max_length=20, choices=CHOICES, blank=True, null=True)
+    none_or_null = models.CharField(
+        max_length=20, choices=CHOICES, blank=True, null=True
+    )
 
     def __str__(self):
         return self.url