@approver のはらちょBOT様DiscordBOTの雛形です

haracho_arch.py

import os

import discord


class MainClient(discord.Client):
    def __init__(self, token: str):
        intents = discord.Intents.all()
        intents.members = True
        super(MainClient, self).__init__(presences=True, guild_subscriptions=True, intents=intents)
        self.token = token

    def launch(self):
        self.run(self.token)

    async def on_ready(self):
        pass

    async def on_message(self, message: discord.Message):
        pass

    async def on_voice_state_update(self, member, before, after):
        pass

    async def on_message_edit(self, before, after):
        pass

    async def on_message_delete(self, message: discord.Message):
        pass

    async def on_guild_role_create(self, role):
        pass


if __name__ == "__main__":
    TOKEN = os.environ["TOKEN"]
    MAIN = MainClient(TOKEN)
    MAIN.launch()