import hikari
import img_source
bot = hikari.GatewayBot(token="your token here")

@bot.listen()
async def ping(event: hikari.GuildMessageCreateEvent) -> None:
    """If a non-bot user mentions your bot, respond with 'Pong!'."""

    # Do not respond to bots nor webhooks pinging us, only user accounts
    if not event.is_human:
        return

    me = bot.get_me()

    if me.id in event.message.user_mentions_ids:
        message = img_source.main()
        await event.message.respond(message[1])

bot.run()