discord py optional argument

1async def command (ctx, amount: typing.Optional[int] = 0)

1@client.command()
2async def hellothere(ctx, *, msg):
3    await ctx.send("General Kenobi")
4#to add an optional Argument simply add an =None (anything else alowed to) after msg
5#the * means that it gives you everthing after the command
6async def hellothere(ctx, *, msg=''):