CODE EXAMPLE FOR PYTHON

discord.py add avatar to embed

em = discord.Embed(description='requested by:
{0}'.format(ctx.author))
em.set_thumbnail(url=ctx.author.avatar_url)

# for rewrite (1.0.0a) do
await ctx.send(embed=em)

# if you're using async 0.16.x do
await bot.say(embed=em)