Purge DMchannel

[syxzud]

How do i purge an DMchannel? this was my code

async def purge(ctx, limit: int = 100):
await ctx.channel.purge(limit=int(limit) + 1)
await ctx.send(f"Purged {limit} messages.", delete_after=5)

[Sitois]

        amount = 10
        async for message in ctx.channel.history(limit=amount):
            if message.author.id == self.bot.user.id:
                await message.delete()
                await asyncio.sleep(0.6)