Fix many py3.12 SyntaxWarnings as per #3561

evennia/accounts/migrations/0001_initial.py

@@ -44,7 +44,7 @@ class Migration(migrations.Migration):
                         verbose_name="username",
                         validators=[
                             django.core.validators.RegexValidator(
-                                "^[\\w.@+-]+$", "Enter a valid username.", "invalid"
+                                r"^[\w.@+-]+$", "Enter a valid username.", "invalid"
                             )
                         ],
                     ),

evennia/accounts/migrations/0004_auto_20150403_2339.py

@@ -2,9 +2,8 @@
 
 
 import django.core.validators
-from django.db import migrations, models
-
 import evennia.accounts.manager
+from django.db import migrations, models
 
 
 class Migration(migrations.Migration):
@@ -47,7 +46,7 @@ class Migration(migrations.Migration):
                 max_length=30,
                 validators=[
                     django.core.validators.RegexValidator(
-                        "^[\\w.@+-]+$",
+                        r"^[\w.@+-]+$",
                         "Enter a valid username. This value may contain only letters, numbers and @/./+/-/_ characters.",
                         "invalid",
                     )

evennia/accounts/migrations/0005_auto_20160905_0902.py

@@ -21,7 +21,7 @@ class Migration(migrations.Migration):
                 unique=True,
                 validators=[
                     django.core.validators.RegexValidator(
-                        "^[\\w.@+-]+$",
+                        r"^[\w.@+-]+$",
                         "Enter a valid username. This value may contain only letters, numbers and @/./+/-/_ characters.",
                     )
                 ],

evennia/accounts/tests.py

@@ -3,18 +3,14 @@
 from random import randint
 from unittest import TestCase
 
-from django.test import override_settings
-from mock import MagicMock, Mock, patch
-
 import evennia
-from evennia.accounts.accounts import (
-    AccountSessionHandler,
-    DefaultAccount,
-    DefaultGuest,
-)
+from django.test import override_settings
+from evennia.accounts.accounts import (AccountSessionHandler, DefaultAccount,
+                                       DefaultGuest)
 from evennia.utils import create
 from evennia.utils.test_resources import BaseEvenniaTest
 from evennia.utils.utils import uses_database
+from mock import MagicMock, Mock, patch
 
 
 class TestAccountSessionHandler(TestCase):
@@ -172,7 +168,7 @@ class TestDefaultAccountAuth(BaseEvenniaTest):
         if not uses_database("mysql"):
             # TODO As of Mar 2019, mysql does not pass this test due to collation problems
             # that has not been possible to resolve
-            result, error = DefaultAccount.validate_username("¯\_(ツ)_/¯")
+            result, error = DefaultAccount.validate_username(r"¯\_(ツ)_/¯")
             self.assertFalse(result, "Validator allowed kanji in username.")
 
         # Should not allow duplicate username