Apply fixes for ruff linting

22 files changed, 75 insertions, 88 deletions

diff --git a/dev/bot/__init__.py b/dev/bot/__init__.py
index 6ee1ae47..1c43b1a8 100644
--- a/dev/bot/__init__.py
+++ b/dev/bot/__init__.py
@@ -21,4 +21,4 @@ class Bot(pydis_core.BotBase):
     async def setup_hook(self) -> None:
         """Load extensions on startup."""
         await super().setup_hook()
-        asyncio.create_task(self.load_extensions(sys.modules[__name__]))
+        await self.load_extensions(sys.modules[__name__])
diff --git a/dev/bot/__main__.py b/dev/bot/__main__.py
index e28be36b..ea74649c 100644
--- a/dev/bot/__main__.py
+++ b/dev/bot/__main__.py
@@ -7,6 +7,7 @@ import dotenv
 from discord.ext import commands
 
 import pydis_core
+
 from . import Bot
 
 dotenv.load_dotenv()
@@ -17,7 +18,7 @@ roles = [int(role) for role in roles.split(",")] if roles else []
 
 bot = Bot(
     guild_id=int(os.getenv("GUILD_ID")),
-    http_session=None,  # type: ignore # We need to instantiate the session in an async context
+    http_session=None,  # type: ignore We need to instantiate the session in an async context
     allowed_roles=roles,
     command_prefix=commands.when_mentioned_or(os.getenv("PREFIX", "!")),
     intents=discord.Intents.all(),
diff --git a/dev/bot/cog.py b/dev/bot/cog.py
index 7746c54e..0da950f9 100644
--- a/dev/bot/cog.py
+++ b/dev/bot/cog.py
@@ -12,7 +12,7 @@ class Cog(commands.Cog):
     @commands.Cog.listener()
     async def on_ready(self) -> None:
         """Print a message when the client (re)connects."""
-        print("Client is ready.")
+        print("Client is ready.")  # noqa: T201
 
     @commands.command()
     async def reload(self, ctx: commands.Context) -> None:
diff --git a/docs/conf.py b/docs/conf.py
index 2fea7264..23636774 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -1,6 +1,7 @@
 # Configuration file for the Sphinx documentation builder.
 # https://www.sphinx-doc.org/en/master/usage/configuration.html
 
+import contextlib
 import functools
 import os.path
 import shutil
@@ -16,7 +17,7 @@ from sphinx.application import Sphinx
 logger = sphinx.util.logging.getLogger(__name__)
 
 # Handle the path not being set correctly in actions.
-sys.path.insert(0, os.path.abspath('..'))
+sys.path.insert(0, os.path.abspath(".."))
 
 from docs import utils  # noqa: E402
 
@@ -209,10 +210,9 @@ smv_latest_version = "main"
 smv_branch_whitelist = "main"
 if os.getenv("BUILD_DOCS_FOR_HEAD", "False").lower() == "true":
     if not (branch := os.getenv("BRANCH_NAME")):
-        try:
+        with contextlib.suppress(git.InvalidGitRepositoryError):
             branch = git.Repo(PROJECT_ROOT).active_branch.name
-        except git.InvalidGitRepositoryError:
-            pass
+
 
     if branch:
         logger.info(f"Adding branch {branch} to build whitelist.")
diff --git a/docs/netlify_build.py b/docs/netlify_build.py
index 1704eece..a6da74df 100644
--- a/docs/netlify_build.py
+++ b/docs/netlify_build.py
@@ -22,5 +22,5 @@ OUTPUT.write_text(build_script.text, encoding="utf-8")
 
 if __name__ == "__main__":
     # Run the build script
-    print("Build started")
-    subprocess.run([sys.executable, OUTPUT.absolute()])
+    print("Build started")  # noqa: T201
+    subprocess.run([sys.executable, OUTPUT.absolute()])  # noqa: S603
diff --git a/docs/utils.py b/docs/utils.py
index 3f58e767..3a20b87f 100644
--- a/docs/utils.py
+++ b/docs/utils.py
@@ -30,16 +30,15 @@ def get_build_root() -> Path:
 def is_attribute(module: types.ModuleType, parameter: str) -> bool:
     """Returns true if `parameter` is an attribute of `module`."""
     docs = docstring_parser.parse(inspect.getdoc(module), docstring_parser.DocstringStyle.GOOGLE)
-    for param in docs.params:
+    for param in docs.params:  # noqa: SIM110
         # The docstring_parser library can mis-parse arguments like `arg (:obj:`str`)` as `arg (`
         # which would create a false-negative below, so we just strip away the extra parenthesis.
         if param.args[0] == "attribute" and param.arg_name.rstrip(" (") == parameter:
             return True
-
     return False
 
 
-def linkcode_resolve(repo_link: str, domain: str, info: dict[str, str]) -> typing.Optional[str]:
+def linkcode_resolve(repo_link: str, domain: str, info: dict[str, str]) -> str | None:
     """
     Function called by linkcode to get the URL for a given resource.
 
@@ -79,8 +78,7 @@ def linkcode_resolve(repo_link: str, domain: str, info: dict[str, str]) -> typin
             # This could be caused by trying to link a class attribute
             if is_attribute(symbol[-1], name):
                 break
-            else:
-                raise e
+            raise e
 
         symbol_name = name
 
@@ -97,8 +95,8 @@ def linkcode_resolve(repo_link: str, domain: str, info: dict[str, str]) -> typin
         pos = _global_assign_pos(source, symbol_name)
         if pos is None:
             raise Exception(f"Could not find symbol `{symbol_name}` in {module.__name__}.")
-        else:
-            start, end = pos
+
+        start, end = pos
         _, offset = inspect.getsourcelines(symbol[-2])
         if offset != 0:
             offset -= 1
@@ -126,7 +124,7 @@ class NodeWithBody(typing.Protocol):
     body: list[ast.AST]
 
 
-def _global_assign_pos(ast_: NodeWithBody, name: str) -> typing.Union[tuple[int, int], None]:
+def _global_assign_pos(ast_: NodeWithBody, name: str) -> tuple[int, int] | None:
     """
     Find the first instance where the `name` global is defined in `ast_`.
 
@@ -149,6 +147,7 @@ def _global_assign_pos(ast_: NodeWithBody, name: str) -> typing.Union[tuple[int,
             pos_in_if = _global_assign_pos(ast_obj, name)
             if pos_in_if is not None:
                 return pos_in_if
+    return None
 
 
 def cleanup() -> None:
@@ -200,7 +199,7 @@ def build_api_doc() -> None:
         logger.info(f"Skipping api-doc for {output_folder.as_posix()} as it already exists.")
         return
 
-    result = subprocess.run(cmd, cwd=build_root, stdout=subprocess.PIPE, check=True, env=os.environ)
+    result = subprocess.run(cmd, cwd=build_root, stdout=subprocess.PIPE, check=True, env=os.environ)  # noqa: S603
     logger.debug("api-doc Output:\n" + result.stdout.decode(encoding="utf-8") + "\n")
 
     cleanup()
diff --git a/pydis_core/__init__.py b/pydis_core/__init__.py
index a09feeaa..94f4ac10 100644
--- a/pydis_core/__init__.py
+++ b/pydis_core/__init__.py
@@ -12,4 +12,4 @@ __all__ = [
     StartupError,
 ]
 
-__all__ = list(map(lambda module: module.__name__, __all__))
+__all__ = [module.__name__ for module in __all__]
diff --git a/pydis_core/_bot.py b/pydis_core/_bot.py
index b45647f3..57336460 100644
--- a/pydis_core/_bot.py
+++ b/pydis_core/_bot.py
@@ -3,7 +3,6 @@ import socket
 import types
 import warnings
 from contextlib import suppress
-from typing import Optional
 
 import aiohttp
 import discord
@@ -19,7 +18,7 @@ try:
     from async_rediscache import RedisSession
     REDIS_AVAILABLE = True
 except ImportError:
-    RedisSession = None
+    RedisSession = object
     REDIS_AVAILABLE = False
 
 log = get_logger()
@@ -42,9 +41,9 @@ class BotBase(commands.Bot):
         guild_id: int,
         allowed_roles: list,
         http_session: aiohttp.ClientSession,
-        redis_session: Optional[RedisSession] = None,
-        api_client: Optional[APIClient] = None,
-        statsd_url: Optional[str] = None,
+        redis_session: RedisSession | None = None,
+        api_client: APIClient | None = None,
+        statsd_url: str | None = None,
         **kwargs,
     ):
         """
@@ -77,16 +76,16 @@ class BotBase(commands.Bot):
         elif redis_session:
             self.redis_session = redis_session
 
-        self._resolver: Optional[aiohttp.AsyncResolver] = None
-        self._connector: Optional[aiohttp.TCPConnector] = None
+        self._resolver: aiohttp.AsyncResolver | None = None
+        self._connector: aiohttp.TCPConnector | None = None
 
-        self._statsd_timerhandle: Optional[asyncio.TimerHandle] = None
-        self._guild_available: Optional[asyncio.Event] = None
+        self._statsd_timerhandle: asyncio.TimerHandle | None = None
+        self._guild_available: asyncio.Event | None = None
         self._extension_loading_task: asyncio.Task | None = None
 
-        self.stats: Optional[AsyncStatsClient] = None
+        self.stats: AsyncStatsClient | None = None
 
-        self.all_extensions: Optional[frozenset[str]] = None
+        self.all_extensions: frozenset[str] | None = None
 
     def _connect_statsd(
         self,
@@ -176,7 +175,7 @@ class BotBase(commands.Bot):
         super().add_command(command)
         self._add_root_aliases(command)
 
-    def remove_command(self, name: str) -> Optional[commands.Command]:
+    def remove_command(self, name: str) -> commands.Command | None:
         """
         Remove a command/alias as normal and then remove its root aliases from the bot.
 
diff --git a/pydis_core/async_stats.py b/pydis_core/async_stats.py
index 411325e3..ae409467 100644
--- a/pydis_core/async_stats.py
+++ b/pydis_core/async_stats.py
@@ -2,7 +2,6 @@
 
 import asyncio
 import socket
-from typing import Optional
 
 from statsd.client.base import StatsClientBase
 
@@ -15,7 +14,7 @@ class AsyncStatsClient(StatsClientBase):
     def __init__(
         self,
         loop: asyncio.AbstractEventLoop,
-        host: str = 'localhost',
+        host: str = "localhost",
         port: int = 8125,
         prefix: str = None
     ):
@@ -35,7 +34,7 @@ class AsyncStatsClient(StatsClientBase):
         self._addr = addr
         self._prefix = prefix
         self._loop = loop
-        self._transport: Optional[asyncio.DatagramTransport] = None
+        self._transport: asyncio.DatagramTransport | None = None
 
     async def create_socket(self) -> None:
         """Use :obj:`asyncio.loop.create_datagram_endpoint` from the loop given on init to create a socket."""
@@ -51,7 +50,7 @@ class AsyncStatsClient(StatsClientBase):
 
     async def _async_send(self, data: str) -> None:
         """Send data to the statsd server using the async transport."""
-        self._transport.sendto(data.encode('ascii'), self._addr)
+        self._transport.sendto(data.encode("ascii"), self._addr)
 
 
-__all__ = ['AsyncStatsClient']
+__all__ = ["AsyncStatsClient"]
diff --git a/pydis_core/exts/__init__.py b/pydis_core/exts/__init__.py
index afd56166..9d59e8ad 100644
--- a/pydis_core/exts/__init__.py
+++ b/pydis_core/exts/__init__.py
@@ -1,4 +1,4 @@
 """Reusable Discord cogs."""
 __all__ = []
 
-__all__ = list(map(lambda module: module.__name__, __all__))
+__all__ = [module.__name__ for module in __all__]
diff --git a/pydis_core/site_api.py b/pydis_core/site_api.py
index c17d2642..80eeff2b 100644
--- a/pydis_core/site_api.py
+++ b/pydis_core/site_api.py
@@ -1,7 +1,6 @@
 """An API wrapper around the Site API."""
 
 import asyncio
-from typing import Optional
 from urllib.parse import quote as quote_url
 
 import aiohttp
@@ -17,8 +16,8 @@ class ResponseCodeError(ValueError):
     def __init__(
         self,
         response: aiohttp.ClientResponse,
-        response_json: Optional[dict] = None,
-        response_text: Optional[str] = None
+        response_json: dict | None = None,
+        response_text: str | None = None
     ):
         """
         Initialize a new :obj:`ResponseCodeError` instance.
@@ -42,7 +41,7 @@ class ResponseCodeError(ValueError):
 class APIClient:
     """A wrapper for the Django Site API."""
 
-    session: Optional[aiohttp.ClientSession] = None
+    session: aiohttp.ClientSession | None = None
     loop: asyncio.AbstractEventLoop = None
 
     def __init__(self, site_api_url: str, site_api_token: str, **session_kwargs):
@@ -57,13 +56,13 @@ class APIClient:
         self.site_api_url = site_api_url
 
         auth_headers = {
-            'Authorization': f"Token {site_api_token}"
+            "Authorization": f"Token {site_api_token}"
         }
 
-        if 'headers' in session_kwargs:
-            session_kwargs['headers'].update(auth_headers)
+        if "headers" in session_kwargs:
+            session_kwargs["headers"].update(auth_headers)
         else:
-            session_kwargs['headers'] = auth_headers
+            session_kwargs["headers"] = auth_headers
 
         # aiohttp will complain if APIClient gets instantiated outside a coroutine. Thankfully, we
         # don't and shouldn't need to do that, so we can avoid scheduling a task to create it.
@@ -134,7 +133,7 @@ class APIClient:
         """Equivalent to :meth:`APIClient.request` with PUT passed as the method."""
         return await self.request("PUT", endpoint, raise_for_status=raise_for_status, **kwargs)
 
-    async def delete(self, endpoint: str, *, raise_for_status: bool = True, **kwargs) -> Optional[dict]:
+    async def delete(self, endpoint: str, *, raise_for_status: bool = True, **kwargs) -> dict | None:
         """
         Send a DELETE request to the site API and return the JSON response.
 
@@ -154,4 +153,4 @@ class APIClient:
             return await resp.json()
 
 
-__all__ = ['APIClient', 'ResponseCodeError']
+__all__ = ["APIClient", "ResponseCodeError"]
diff --git a/pydis_core/utils/__init__.py b/pydis_core/utils/__init__.py
index 0542231e..8a61082a 100644
--- a/pydis_core/utils/__init__.py
+++ b/pydis_core/utils/__init__.py
@@ -1,17 +1,7 @@
 """Useful utilities and tools for Discord bot development."""
 
 from pydis_core.utils import (
-    _monkey_patches,
-    caching,
-    channel,
-    commands,
-    cooldown,
-    function,
-    interactions,
-    logging,
-    members,
-    regex,
-    scheduling,
+    _monkey_patches, caching, channel, commands, cooldown, function, interactions, logging, members, regex, scheduling
 )
 from pydis_core.utils._extensions import unqualify
 
@@ -47,4 +37,4 @@ __all__ = [
     unqualify,
 ]
 
-__all__ = list(map(lambda module: module.__name__, __all__))
+__all__ = [module.__name__ for module in __all__]
diff --git a/pydis_core/utils/_monkey_patches.py b/pydis_core/utils/_monkey_patches.py
index f0a8dc9c..2df56039 100644
--- a/pydis_core/utils/_monkey_patches.py
+++ b/pydis_core/utils/_monkey_patches.py
@@ -1,8 +1,7 @@
 """Contains all common monkey patches, used to alter discord to fit our needs."""
 
 import logging
-import typing
-from datetime import datetime, timedelta
+from datetime import datetime, timedelta, timezone
 from functools import partial, partialmethod
 
 from discord import Forbidden, http
@@ -24,7 +23,7 @@ class _Command(commands.Command):
         super().__init__(*args, **kwargs)
         self.root_aliases = kwargs.get("root_aliases", [])
 
-        if not isinstance(self.root_aliases, (list, tuple)):
+        if not isinstance(self.root_aliases, list | tuple):
             raise TypeError("Root aliases of a command must be a list or a tuple of strings.")
 
 
@@ -47,17 +46,17 @@ def _patch_typing() -> None:
     log.debug("Patching send_typing, which should fix things breaking when Discord disables typing events. Stay safe!")
 
     original = http.HTTPClient.send_typing
-    last_403: typing.Optional[datetime] = None
+    last_403: datetime | None = None
 
     async def honeybadger_type(self: http.HTTPClient, channel_id: int) -> None:
         nonlocal last_403
-        if last_403 and (datetime.utcnow() - last_403) < timedelta(minutes=5):
+        if last_403 and (datetime.now(tz=timezone.utc) - last_403) < timedelta(minutes=5):
             log.warning("Not sending typing event, we got a 403 less than 5 minutes ago.")
             return
         try:
             await original(self, channel_id)
         except Forbidden:
-            last_403 = datetime.utcnow()
+            last_403 = datetime.now(tz=timezone.utc)
             log.warning("Got a 403 from typing event!")
 
     http.HTTPClient.send_typing = honeybadger_type
diff --git a/pydis_core/utils/commands.py b/pydis_core/utils/commands.py
index 7afd8137..2bc5b668 100644
--- a/pydis_core/utils/commands.py
+++ b/pydis_core/utils/commands.py
@@ -1,10 +1,9 @@
-from typing import Optional
 
 from discord import Message
 from discord.ext.commands import BadArgument, Context, clean_content
 
 
-async def clean_text_or_reply(ctx: Context, text: Optional[str] = None) -> str:
+async def clean_text_or_reply(ctx: Context, text: str | None = None) -> str:
     """
     Cleans a text argument or replied message's content.
 
diff --git a/pydis_core/utils/cooldown.py b/pydis_core/utils/cooldown.py
index 5129befd..0fe7102a 100644
--- a/pydis_core/utils/cooldown.py
+++ b/pydis_core/utils/cooldown.py
@@ -26,6 +26,7 @@ _HashableArgsTuple = tuple[Hashable, ...]
 
 if typing.TYPE_CHECKING:
     import typing_extensions
+
     from pydis_core import BotBase
 
 P = typing.ParamSpec("P")
@@ -34,7 +35,7 @@ R = typing.TypeVar("R")
 """The command's return value."""
 
 
-class CommandOnCooldown(CommandError, typing.Generic[P, R]):
+class CommandOnCooldown(CommandError, typing.Generic[P, R]):  # noqa: N818
     """Raised when a command is invoked while on cooldown."""
 
     def __init__(
diff --git a/pydis_core/utils/function.py b/pydis_core/utils/function.py
index d89163ec..98737af0 100644
--- a/pydis_core/utils/function.py
+++ b/pydis_core/utils/function.py
@@ -99,7 +99,7 @@ def command_wraps(
     Returns:
         A decorator that behaves like :func:`functools.wraps`,
         with the wrapper replaced with the function :func:`update_wrapper_globals` returned.
-    """  # noqa: D200
+    """
     def decorator(wrapper: Callable[_P, _R]) -> Callable[_P, _R]:
         return functools.update_wrapper(
             update_wrapper_globals(wrapper, wrapped, ignored_conflict_names=ignored_conflict_names),
diff --git a/pydis_core/utils/interactions.py b/pydis_core/utils/interactions.py
index a6746e1e..6e419342 100644
--- a/pydis_core/utils/interactions.py
+++ b/pydis_core/utils/interactions.py
@@ -1,4 +1,5 @@
-from typing import Literal, Optional, Sequence
+from collections.abc import Sequence
+from typing import Literal
 
 from discord import ButtonStyle, HTTPException, Interaction, Message, NotFound, ui
 
@@ -43,8 +44,8 @@ class ViewWithUserAndRoleCheck(ui.View):
         *,
         allowed_users: Sequence[int],
         allowed_roles: Sequence[int],
-        timeout: Optional[float] = 180.0,
-        message: Optional[Message] = None
+        timeout: float | None = 180.0,
+        message: Message | None = None
     ) -> None:
         super().__init__(timeout=timeout)
         self.allowed_users = allowed_users
@@ -97,7 +98,7 @@ class DeleteMessageButton(ui.Button):
         style (:literal-url:`ButtonStyle <https://discordpy.readthedocs.io/en/latest/interactions/api.html#discord.ButtonStyle>`):
             The style of the button, set to ``ButtonStyle.secondary`` if not specified.
         label: The label of the button, set to "Delete" if not specified.
-    """  # noqa: E501
+    """
 
     def __init__(
         self,
diff --git a/pydis_core/utils/logging.py b/pydis_core/utils/logging.py
index 7814f348..ecccb91a 100644
--- a/pydis_core/utils/logging.py
+++ b/pydis_core/utils/logging.py
@@ -32,7 +32,7 @@ class CustomLogger(LoggerClass):
             self.log(TRACE_LEVEL, msg, *args, **kwargs)
 
 
-def get_logger(name: typing.Optional[str] = None) -> CustomLogger:
+def get_logger(name: str | None = None) -> CustomLogger:
     """
     Utility to make mypy recognise that logger is of type :obj:`CustomLogger`.
 
diff --git a/pydis_core/utils/members.py b/pydis_core/utils/members.py
index fa8481cc..542f945f 100644
--- a/pydis_core/utils/members.py
+++ b/pydis_core/utils/members.py
@@ -9,7 +9,7 @@ from pydis_core.utils import logging
 log = logging.get_logger(__name__)
 
 
-async def get_or_fetch_member(guild: discord.Guild, member_id: int) -> typing.Optional[discord.Member]:
+async def get_or_fetch_member(guild: discord.Guild, member_id: int) -> discord.Member | None:
     """
     Attempt to get a member from cache; on failure fetch from the API.
 
diff --git a/pydis_core/utils/scheduling.py b/pydis_core/utils/scheduling.py
index d4458bc1..1e2e25e7 100644
--- a/pydis_core/utils/scheduling.py
+++ b/pydis_core/utils/scheduling.py
@@ -5,7 +5,7 @@ import contextlib
 import inspect
 import typing
 from collections import abc
-from datetime import datetime
+from datetime import datetime, timezone
 from functools import partial
 
 from pydis_core.utils import logging
@@ -69,7 +69,8 @@ class Scheduler:
         self._log.trace(f"Scheduling task #{task_id}...")
 
         msg = f"Cannot schedule an already started coroutine for #{task_id}"
-        assert inspect.getcoroutinestate(coroutine) == "CORO_CREATED", msg
+        if inspect.getcoroutinestate(coroutine) != "CORO_CREATED":
+            raise ValueError(msg)
 
         if task_id in self._scheduled_tasks:
             self._log.debug(f"Did not schedule task #{task_id}; task was already scheduled.")
@@ -99,7 +100,7 @@ class Scheduler:
             task_id: A unique ID to create the task with.
             coroutine: The function to be called.
         """
-        now_datetime = datetime.now(time.tzinfo) if time.tzinfo else datetime.utcnow()
+        now_datetime = datetime.now(time.tzinfo) if time.tzinfo else datetime.now(tz=timezone.utc)
         delay = (time - now_datetime).total_seconds()
         if delay > 0:
             coroutine = self._await_later(delay, task_id, coroutine)
@@ -108,7 +109,7 @@ class Scheduler:
 
     def schedule_later(
         self,
-        delay: typing.Union[int, float],
+        delay: int | float,
         task_id: abc.Hashable,
         coroutine: abc.Coroutine
     ) -> None:
@@ -152,7 +153,7 @@ class Scheduler:
 
     async def _await_later(
         self,
-        delay: typing.Union[int, float],
+        delay: int | float,
         task_id: abc.Hashable,
         coroutine: abc.Coroutine
     ) -> None:
@@ -218,7 +219,7 @@ def create_task(
     coro: abc.Coroutine[typing.Any, typing.Any, TASK_RETURN],
     *,
     suppressed_exceptions: tuple[type[Exception], ...] = (),
-    event_loop: typing.Optional[asyncio.AbstractEventLoop] = None,
+    event_loop: asyncio.AbstractEventLoop | None = None,
     **kwargs,
 ) -> asyncio.Task[TASK_RETURN]:
     """
diff --git a/tests/pydis_core/test_api.py b/tests/pydis_core/test_api.py
index 92444e19..56977f07 100644
--- a/tests/pydis_core/test_api.py
+++ b/tests/pydis_core/test_api.py
@@ -32,7 +32,7 @@ class APIClientTests(unittest.IsolatedAsyncioTestCase):
 
     def test_response_code_error_initialization_with_json(self):
         """Test the initialization of `ResponseCodeError` with json."""
-        json_data = {'hello': 'world'}
+        json_data = {"hello": "world"}
         error = site_api.ResponseCodeError(
             response=self.error_api_response,
             response_json=json_data,
@@ -42,7 +42,7 @@ class APIClientTests(unittest.IsolatedAsyncioTestCase):
 
     def test_response_code_error_string_representation_with_nonempty_response_json(self):
         """Test the string representation of `ResponseCodeError` initialized with json."""
-        json_data = {'hello': 'world'}
+        json_data = {"hello": "world"}
         error = site_api.ResponseCodeError(
             response=self.error_api_response,
             response_json=json_data
@@ -51,7 +51,7 @@ class APIClientTests(unittest.IsolatedAsyncioTestCase):
 
     def test_response_code_error_initialization_with_text(self):
         """Test the initialization of `ResponseCodeError` with text."""
-        text_data = 'Lemon will eat your soul'
+        text_data = "Lemon will eat your soul"
         error = site_api.ResponseCodeError(
             response=self.error_api_response,
             response_text=text_data,
@@ -61,7 +61,7 @@ class APIClientTests(unittest.IsolatedAsyncioTestCase):
 
     def test_response_code_error_string_representation_with_nonempty_response_text(self):
         """Test the string representation of `ResponseCodeError` initialized with text."""
-        text_data = 'Lemon will eat your soul'
+        text_data = "Lemon will eat your soul"
         error = site_api.ResponseCodeError(
             response=self.error_api_response,
             response_text=text_data
diff --git a/tests/pydis_core/utils/test_regex.py b/tests/pydis_core/utils/test_regex.py
index 01a2412b..1cf90711 100644
--- a/tests/pydis_core/utils/test_regex.py
+++ b/tests/pydis_core/utils/test_regex.py
@@ -1,10 +1,9 @@
 import unittest
-from typing import Optional
 
 from pydis_core.utils.regex import DISCORD_INVITE
 
 
-def match_regex(s: str) -> Optional[str]:
+def match_regex(s: str) -> str | None:
     """Helper function to run re.match on a string.
 
     Return the invite capture group, if the string matches the pattern
@@ -14,7 +13,7 @@ def match_regex(s: str) -> Optional[str]:
     return result if result is None else result.group("invite")
 
 
-def search_regex(s: str) -> Optional[str]:
+def search_regex(s: str) -> str | None:
     """Helper function to run re.search on a string.
 
     Return the invite capture group, if the string matches the pattern