How do I use the discord client in another function after running it?

[Valachio]

This is a seemingly easy question but I can't seem to find a solution for it.

Basically I want to use discord.py to login to an account, then use the discord client in another function. In this case, I use send_message() to get a discord user by their ID and send them a message. Code below:

import discord

class MyClient(discord.Client):
    async def on_ready(self):
        print(f'Logged in as {self.user} (ID: {self.user.id})')

client = MyClient()
client.run('token')

async def send_message(user_id):
    user = client.get_user(user_id)
    await user.send('My message')

When I run this python file in my python shell, it would print the "Logged in as ..." success message and it would hang up. It wouldn't let me type any other command. I want to run send_message(...) but I cannot.

In this case, how do I run send_message(...) after running client.run(...)?

[BWP09]

Could you put the send_message function inside of the MyClient class?