#!/usr/bin/python
from discord import Client
from sys import argv
import asyncio

async def main(target, message):
    client = Client()
    await client.login('your token')
    user = await client.fetch_user(target)
    await user.send(message)
    await client.logout()
    await client.close()

if __name__ == '__main__':
    loop = asyncio.get_event_loop().run_until_complete(main(*argv[1:]))