Discord.py how to purge the messages of a specified user?

Question

Python

How to do something when a user writes <bot prefix>clear @user cleared the entire chat from all messages of the specified user?

Answer 1

TextChannel.purge()

@commands.command()
async def clear(ctx, user: discord.Member):
    await ctx.channel.purge(limit=None, check=lambda m: m.author==user)