How to make the command work only in pm + log?

Question

Python

As planned, the bot should respond to the command that is sent to the PM. If the command is sent in a server channel - no response. In fact, the bot perceives the command both in LAN and in channels.
1. How to actually do so that the reaction to the command would be only in PM?
2. How to make a bot message log, for example, for 24 hours, in the form user/message?

@bot.command()
async def anon(ctx, *, arg):
    if discord.ChannelType.private:
    	channel = bot.get_channel(#id)
    	await channel.send(arg)

Answer 1

1. https://discordpy.readthedocs.io/en/stable/ext/com...

@bot.command()
@commands.dm_only()
async def cmd(...):

2. https://discordpy.readthedocs.io/en/stable/api.htm...
https://discordpy.readthedocs.io/en/stable/api.htm...
https://discordpy.readthedocs. io/en/stable/api.htm...

isinstance(ctx.channel, discord.DMchannel)
# или
ctx.channel.type == discord.ChannelType.private