Reformat code using black

Segments where readability was hampered were fixed by appropriate
format skipping directives. New code should hopefully be black
compatible. The moment they remove the -S option is probably the moment
I stop using black though.

discord/ext/commands/cog.py

@@ -45,6 +45,7 @@ FuncT = TypeVar('FuncT', bound=Callable[..., Any])
 
 MISSING: Any = discord.utils.MISSING
 
+
 class CogMeta(type):
     """A metaclass for defining a cog.
 
@@ -104,6 +105,7 @@ class CogMeta(type):
                 async def bar(self, ctx):
                     pass # hidden -> False
     """
+
     __cog_name__: str
     __cog_settings__: Dict[str, Any]
     __cog_commands__: List[Command]
@@ -150,7 +152,7 @@ class CogMeta(type):
                             raise TypeError(no_bot_cog.format(base, elem))
                         listeners[elem] = value
 
-        new_cls.__cog_commands__ = list(commands.values()) # this will be copied in Cog.__new__
+        new_cls.__cog_commands__ = list(commands.values())  # this will be copied in Cog.__new__
 
         listeners_as_list = []
         for listener in listeners.values():
@@ -169,10 +171,12 @@ class CogMeta(type):
     def qualified_name(cls) -> str:
         return cls.__cog_name__
 
+
 def _cog_special_method(func: FuncT) -> FuncT:
     func.__cog_special_method__ = None
     return func
 
+
 class Cog(metaclass=CogMeta):
     """The base class that all cogs must inherit from.
 
@@ -183,6 +187,7 @@ class Cog(metaclass=CogMeta):
     When inheriting from this class, the options shown in :class:`CogMeta`
     are equally valid here.
     """
+
     __cog_name__: ClassVar[str]
     __cog_settings__: ClassVar[Dict[str, Any]]
     __cog_commands__: ClassVar[List[Command]]
@@ -199,10 +204,7 @@ class Cog(metaclass=CogMeta):
         # r.e type ignore, type-checker complains about overriding a ClassVar
         self.__cog_commands__ = tuple(c._update_copy(cmd_attrs) for c in cls.__cog_commands__)  # type: ignore
 
-        lookup = {
-            cmd.qualified_name: cmd
-            for cmd in self.__cog_commands__
-        }
+        lookup = {cmd.qualified_name: cmd for cmd in self.__cog_commands__}
 
         # Update the Command instances dynamically as well
         for command in self.__cog_commands__:
@@ -255,6 +257,7 @@ class Cog(metaclass=CogMeta):
             A command or group from the cog.
         """
         from .core import GroupMixin
+
         for command in self.__cog_commands__:
             if command.parent is None:
                 yield command
@@ -315,6 +318,7 @@ class Cog(metaclass=CogMeta):
             # to pick it up but the metaclass unfurls the function and
             # thus the assignments need to be on the actual function
             return func
+
         return decorator
 
     def has_error_handler(self) -> bool: