Refs #33476 -- Reformatted code with Black.

tests/validation/models.py

@@ -7,36 +7,43 @@ from django.db.models.functions import Lower
 
 def validate_answer_to_universe(value):
     if value != 42:
-        raise ValidationError('This is not the answer to life, universe and everything!', code='not42')
+        raise ValidationError(
+            "This is not the answer to life, universe and everything!", code="not42"
+        )
 
 
 class ModelToValidate(models.Model):
     name = models.CharField(max_length=100)
     created = models.DateTimeField(default=datetime.now)
-    number = models.IntegerField(db_column='number_val')
+    number = models.IntegerField(db_column="number_val")
     parent = models.ForeignKey(
-        'self',
+        "self",
         models.SET_NULL,
-        blank=True, null=True,
-        limit_choices_to={'number': 10},
+        blank=True,
+        null=True,
+        limit_choices_to={"number": 10},
     )
     email = models.EmailField(blank=True)
     ufm = models.ForeignKey(
-        'UniqueFieldsModel',
+        "UniqueFieldsModel",
         models.SET_NULL,
-        to_field='unique_charfield',
-        blank=True, null=True,
+        to_field="unique_charfield",
+        blank=True,
+        null=True,
     )
     url = models.URLField(blank=True)
-    f_with_custom_validator = models.IntegerField(blank=True, null=True, validators=[validate_answer_to_universe])
-    f_with_iterable_of_validators = models.IntegerField(blank=True, null=True,
-                                                        validators=(validate_answer_to_universe,))
+    f_with_custom_validator = models.IntegerField(
+        blank=True, null=True, validators=[validate_answer_to_universe]
+    )
+    f_with_iterable_of_validators = models.IntegerField(
+        blank=True, null=True, validators=(validate_answer_to_universe,)
+    )
     slug = models.SlugField(blank=True)
 
     def clean(self):
         super().clean()
         if self.number == 11:
-            raise ValidationError('Invalid number supplied!')
+            raise ValidationError("Invalid number supplied!")
 
 
 class UniqueFieldsModel(models.Model):
@@ -55,13 +62,21 @@ class UniqueTogetherModel(models.Model):
     efield = models.EmailField()
 
     class Meta:
-        unique_together = (('ifield', 'cfield',), ['ifield', 'efield'])
+        unique_together = (
+            (
+                "ifield",
+                "cfield",
+            ),
+            ["ifield", "efield"],
+        )
 
 
 class UniqueForDateModel(models.Model):
     start_date = models.DateField()
     end_date = models.DateTimeField()
-    count = models.IntegerField(unique_for_date="start_date", unique_for_year="end_date")
+    count = models.IntegerField(
+        unique_for_date="start_date", unique_for_year="end_date"
+    )
     order = models.IntegerField(unique_for_month="end_date")
     name = models.CharField(max_length=100)
 
@@ -69,9 +84,9 @@ class UniqueForDateModel(models.Model):
 class CustomMessagesModel(models.Model):
     other = models.IntegerField(blank=True, null=True)
     number = models.IntegerField(
-        db_column='number_val',
-        error_messages={'null': 'NULL', 'not42': 'AAARGH', 'not_equal': '%s != me'},
-        validators=[validate_answer_to_universe]
+        db_column="number_val",
+        error_messages={"null": "NULL", "not42": "AAARGH", "not_equal": "%s != me"},
+        validators=[validate_answer_to_universe],
     )
 
 
@@ -99,40 +114,50 @@ class Article(models.Model):
 
 
 class Post(models.Model):
-    title = models.CharField(max_length=50, unique_for_date='posted', blank=True)
-    slug = models.CharField(max_length=50, unique_for_year='posted', blank=True)
-    subtitle = models.CharField(max_length=50, unique_for_month='posted', blank=True)
+    title = models.CharField(max_length=50, unique_for_date="posted", blank=True)
+    slug = models.CharField(max_length=50, unique_for_year="posted", blank=True)
+    subtitle = models.CharField(max_length=50, unique_for_month="posted", blank=True)
     posted = models.DateField()
 
 
 class FlexibleDatePost(models.Model):
-    title = models.CharField(max_length=50, unique_for_date='posted', blank=True)
-    slug = models.CharField(max_length=50, unique_for_year='posted', blank=True)
-    subtitle = models.CharField(max_length=50, unique_for_month='posted', blank=True)
+    title = models.CharField(max_length=50, unique_for_date="posted", blank=True)
+    slug = models.CharField(max_length=50, unique_for_year="posted", blank=True)
+    subtitle = models.CharField(max_length=50, unique_for_month="posted", blank=True)
     posted = models.DateField(blank=True, null=True)
 
 
 class UniqueErrorsModel(models.Model):
-    name = models.CharField(max_length=100, unique=True, error_messages={'unique': 'Custom unique name message.'})
-    no = models.IntegerField(unique=True, error_messages={'unique': 'Custom unique number message.'})
+    name = models.CharField(
+        max_length=100,
+        unique=True,
+        error_messages={"unique": "Custom unique name message."},
+    )
+    no = models.IntegerField(
+        unique=True, error_messages={"unique": "Custom unique number message."}
+    )
 
 
 class GenericIPAddressTestModel(models.Model):
     generic_ip = models.GenericIPAddressField(blank=True, null=True, unique=True)
     v4_ip = models.GenericIPAddressField(blank=True, null=True, protocol="ipv4")
     v6_ip = models.GenericIPAddressField(blank=True, null=True, protocol="ipv6")
-    ip_verbose_name = models.GenericIPAddressField("IP Address Verbose", blank=True, null=True)
+    ip_verbose_name = models.GenericIPAddressField(
+        "IP Address Verbose", blank=True, null=True
+    )
 
 
 class GenericIPAddrUnpackUniqueTest(models.Model):
-    generic_v4unpack_ip = models.GenericIPAddressField(null=True, blank=True, unique=True, unpack_ipv4=True)
+    generic_v4unpack_ip = models.GenericIPAddressField(
+        null=True, blank=True, unique=True, unpack_ipv4=True
+    )
 
 
 class UniqueFuncConstraintModel(models.Model):
     field = models.CharField(max_length=255)
 
     class Meta:
-        required_db_features = {'supports_expression_indexes'}
+        required_db_features = {"supports_expression_indexes"}
         constraints = [
-            models.UniqueConstraint(Lower('field'), name='func_lower_field_uq'),
+            models.UniqueConstraint(Lower("field"), name="func_lower_field_uq"),
         ]