CODE EXAMPLE FOR PYTHON

discord.py get user id

import discord
import asyncio

client = discord.Client()

@client.event
async def on_ready():
    print('Logged in as')
    print(client.user.name)
    print(client.user.id)
    print('------')

@client.event
async def on_message(message):
    print(message.author.id)

client.run('token')