[commands] Allow setting description of cogs

discord/ext/commands/cog.py

@@ -70,6 +70,11 @@ class CogMeta(type):
     -----------
     name: :class:`str`
         The cog name. By default, it is the name of the class with no modification.
+    description: :class:`str`
+        The cog description. By default, it is the cleaned docstring of the class.
+
+        .. versionadded:: 1.6
+
     command_attrs: :class:`dict`
         A list of attributes to apply to every command inside this cog. The dictionary
         is passed into the :class:`Command` options at ``__init__``.
@@ -93,6 +98,11 @@ class CogMeta(type):
         attrs['__cog_name__'] = kwargs.pop('name', name)
         attrs['__cog_settings__'] = command_attrs = kwargs.pop('command_attrs', {})
 
+        description = kwargs.pop('description', None)
+        if description is None:
+            description = inspect.cleandoc(attrs.get('__doc__', ''))
+        attrs['__cog_description__'] = description
+
         commands = {}
         listeners = {}
         no_bot_cog = 'Commands or listeners must not start with cog_ or bot_ (in method {0.__name__}.{1})'
@@ -209,11 +219,11 @@ class Cog(metaclass=CogMeta):
     @property
     def description(self):
         """:class:`str`: Returns the cog's description, typically the cleaned docstring."""
-        try:
-            return self.__cog_cleaned_doc__
-        except AttributeError:
-            self.__cog_cleaned_doc__ = cleaned = inspect.getdoc(self)
-            return cleaned
+        return self.__cog_description__
+
+    @description.setter
+    def description(self, description):
+        self.__cog_description__ = description
 
     def walk_commands(self):
         """An iterator that recursively walks through this cog's commands and subcommands.