main.py

# Work with Python 3.6
import discord
from discord.ext import commands
from discord.ext.commands import CommandNotFound
import json

# Get bot token from config.json
with open('config.json', 'r') as f:
    config_dict = json.load(f)

TOKEN = config_dict['token']

bot = commands.Bot(command_prefix='g!', description="Simulates gacha rolls.")
cogs = ['cogs.basic', 'cogs.info', 'cogs.gacha', 'cogs.stats', 'cogs.config']

bot.remove_command('help')

@bot.event
async def on_command_error(ctx, error):
    if isinstance(error, CommandNotFound):
        await ctx.send('Invalid command. For a list of valid commands, type `' +
            bot.command_prefix + 'help`.')
    else:
        raise error

@bot.event
async def on_ready():
    global cogs

    print('Logged in as')
    print(bot.user.name)
    print(bot.user.id)
    print('------')

    if __name__ == '__main__':
        try:
            for cog in cogs:
                current_cog = cog
                bot.load_extension(cog)
        except discord.ext.commands.errors.ExtensionAlreadyLoaded:
            bot.reload_extension(current_cog)

    await bot.change_presence(status=discord.Status.online,\
        activity=discord.Game(name='' + bot.command_prefix + 'help'))

bot.run(TOKEN)