counter.py

import discord
import atexit
from discord.ext import commands
from configparser import ConfigParser

def exit_handler():
    print('My application is ending!')

client = commands.Bot(command_prefix = '!')

counter = 0
config = ConfigParser()

@client.event
async def on_ready():
    atexit.register(exit_handler)

    global counter
    global config
    config.read('count.ini')
    counter = config.getint('main', 'count')

    print('ready')

@client.command()
async def count(ctx):
    global counter
    global config
    await ctx.send(counter)
    counter = counter + 1
    config.set('main', 'count', str(counter))

    with open('count.ini', 'w') as f:
        config.write(f)

client.run('NzIwMjYxODQzMzE4MjEwNjAw.XuDcDQ.I_LGJvcdUomeZCKqEDlJgIq5-qo')