Overly fancy avatar update script, based on d.py

avset.py

import asyncio
import discord
import argparse


class AvatarClient(discord.Client):
    def __init__(self, token: str, filename: str, username: str):
        super().__init__()
        self._av_token = token
        self._av_filename = filename
        self._av_username = username

    async def on_ready(self):
        print("Logged in as {}#{}".format(self.user.name, self.user.discriminator))
        
        if self._av_filename:
            print("Updating avatar")
            with open(self._av_filename, "rb") as fi:
                f = fi.read()
                await self.edit_profile(avatar=f)
            print("Avatar updated")
        
        if self._av_username:
            print("Updating username")
            await self.edit_profile(username=self._av_username)
            print("Username updated")
        
        await self.logout()
        await self.close()

    def do_dis_thang(self):
        print("Logging in")
        self.run(self._av_token)


def main():
    print("Initializing bot")

    parser = argparse.ArgumentParser()
    parser.add_argument("-t", "--token", type=str, dest="token", help="Target's token", default=None)
    parser.add_argument("-i", "--image-path", type=str, dest="image", help="Path to the new avatar", default=None)
    parser.add_argument("-u", "--username", type=str, dest="username", help="New username", default=None)
    args = parser.parse_args()
    args = vars(args)

    token = args["token"]
    image = args["image"]
    username = args["username"]

    avu = AvatarClient(token, image, username)
    avu.do_dis_thang()

    print("All operations completed")


if __name__ == "__main__":
    main()