Fix formatting and resolve pre-commit errors

rest_framework/fields.py

@@ -894,6 +894,7 @@ class AlphabeticFieldValidator:
         if not re.match(r'^[A-Za-z ]*$', value):
             raise ValueError("This field must contain only alphabetic characters and spaces.")
 
+
 class AlphanumericFieldValidator:
     """
     Custom validator to ensure the field contains only alphanumeric characters (letters and numbers).
@@ -906,6 +907,7 @@ class AlphanumericFieldValidator:
         if not re.match(r'^[A-Za-z0-9]*$', value):
             raise ValueError("This field must contain only alphanumeric characters (letters and numbers).")
 
+
 class CustomLengthValidator:
     """
     Custom validator to ensure the length of a string is within specified limits.

rest_framework/permissions.py

@@ -172,6 +172,7 @@ class IsAuthenticatedOrReadOnly(BasePermission):
             request.user.is_authenticated
         )
 
+
 class IsAdminUserOrReadOnly(BasePermission):
     """
     Custom permission to only allow admin users to edit an object.

tests/test_fields.py

@@ -1141,6 +1141,7 @@ class TestAlphanumericField:
                 validator(value)
             assert str(excinfo.value) == "This field must be a string."
 
+
 class TestCustomLengthField:
     """
     Valid and invalid values for `CustomLengthValidator`.

tests/test_status.py

@@ -1,8 +1,7 @@
 from django.test import TestCase
 
 from rest_framework.status import (
-    is_client_error, is_informational, is_redirect, is_server_error,
+    is_client_error, is_informational, is_redirect, is_server_error, is_success
-    is_success
 )
 
 

tests/test_validators.py

@@ -10,8 +10,7 @@ from django.test import TestCase
 from rest_framework import serializers
 from rest_framework.exceptions import ValidationError
 from rest_framework.validators import (
-    BaseUniqueForValidator, UniqueTogetherValidator, UniqueValidator,
+    BaseUniqueForValidator, UniqueTogetherValidator, UniqueValidator, qs_exists
-    qs_exists
 )