discord.py how to mention a user code example

Example 1: discord.py mention user

#discord.py rewrite
#python 3+
bot.command(name='pingme', help='pings the author of the message')
async def pingme(ctx):
	#to get a member from a 'ctx' object is ctx.author
	#from there its .mention will mention (ping) the user
	#also there are others like .id
	await ctx.send(ctx.author.mention)

Example 2: how to mention someone discord.py

myid = '<@201909896357216256>'
await client.send_message(message.channel, ' : %s is the best ' % myid)