como hacer un bot de discord

import discord
from discord.ext import commands

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

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

@bot.command()
async def add(ctx, a: int, b: int):
    await ctx.send(a+b)

@bot.command()
async def multiply(ctx, a: int, b: int):
    await ctx.send(a*b)

@bot.command()
async def greet(ctx):
    await ctx.send(":smiley: :wave: Hello, there!")

@bot.command()
async def cat(ctx):
    await ctx.send("https://media.giphy.com/media/JIX9t2j0ZTN9S/giphy.gif")

@bot.command()
async def info(ctx):
    embed =