Fix code style issues with Black

discord/ext/commands/context.py

@@ -50,21 +50,19 @@ if TYPE_CHECKING:
     from .help import HelpCommand
     from .view import StringView
 
-__all__ = (
-    'Context',
-)
+__all__ = ("Context",)
 
 MISSING: Any = discord.utils.MISSING
 
 
-T = TypeVar('T')
-BotT = TypeVar('BotT', bound="Union[Bot, AutoShardedBot]")
-CogT = TypeVar('CogT', bound="Cog")
+T = TypeVar("T")
+BotT = TypeVar("BotT", bound="Union[Bot, AutoShardedBot]")
+CogT = TypeVar("CogT", bound="Cog")
 
 if TYPE_CHECKING:
-    P = ParamSpec('P')
+    P = ParamSpec("P")
 else:
-    P = TypeVar('P')
+    P = TypeVar("P")
 
 
 class Context(discord.abc.Messageable, Generic[BotT]):
@@ -123,7 +121,8 @@ class Context(discord.abc.Messageable, Generic[BotT]):
         or invoked.
     """
 
-    def __init__(self,
+    def __init__(
+        self,
         *,
         message: Message,
         bot: BotT,
@@ -220,7 +219,7 @@ class Context(discord.abc.Messageable, Generic[BotT]):
         cmd = self.command
         view = self.view
         if cmd is None:
-            raise ValueError('This context is not valid.')
+            raise ValueError("This context is not valid.")
 
         # some state to revert to when we're done
         index, previous = view.index, view.previous
@@ -231,10 +230,10 @@ class Context(discord.abc.Messageable, Generic[BotT]):
 
         if restart:
             to_call = cmd.root_parent or cmd
-            view.index = len(self.prefix or '')
+            view.index = len(self.prefix or "")
             view.previous = 0
             self.invoked_parents = []
-            self.invoked_with = view.get_word() # advance to get the root command
+            self.invoked_with = view.get_word()  # advance to get the root command
         else:
             to_call = cmd
 
@@ -264,7 +263,7 @@ class Context(discord.abc.Messageable, Generic[BotT]):
         .. versionadded:: 2.0
         """
         if self.prefix is None:
-            return ''
+            return ""
 
         user = self.me
         # this breaks if the prefix mention is not the bot itself but I
@@ -272,7 +271,7 @@ class Context(discord.abc.Messageable, Generic[BotT]):
         # for this common use case rather than waste performance for the
         # odd one.
         pattern = re.compile(r"<@!?%s>" % user.id)
-        return pattern.sub("@%s" % user.display_name.replace('\\', r'\\'), self.prefix)
+        return pattern.sub("@%s" % user.display_name.replace("\\", r"\\"), self.prefix)
 
     @property
     def cog(self) -> Optional[Cog]:
@@ -389,7 +388,7 @@ class Context(discord.abc.Messageable, Generic[BotT]):
         await cmd.prepare_help_command(self, entity.qualified_name)
 
         try:
-            if hasattr(entity, '__cog_commands__'):
+            if hasattr(entity, "__cog_commands__"):
                 injected = wrap_callback(cmd.send_cog_help)
                 return await injected(entity)
             elif isinstance(entity, Group):