Set a new attribute to Discord object

[CanavarB]

How can I set an attribute to an object?

For example I want to add 'FORUM' constant to a discord.Guild object.

self.GUILD : discord.Guild = discord.utils.get(self.guilds, id = GUILD_ID)
self.GUILD.FORUM : discord.ForumChannel = discord.utils.get(self.GUILD.forums, id=FORUM_CHANNEL_ID)

and also

self.GUILD.FORUM.SPECIAL_TAG : discord.ForumTag = discord.utils.get(self.GUILD.FORUM.available_tags, name='special name')

edit:
I tried setatrr() function too.

[LostLuma]

Hello, setting custom attributes on the libraries' types is not possible as they are slotted for a lower memory footprint.
You'll have to assign these attributes to the client / bot or another namespace within your code, similar to your self.GUILD attribute.