Discord.py 通道检测

Question

I am creating a discord bot and would like to know if the argument detected after the context is a channel. I tried doing this.

@client.command()
async def channeldetected(ctx, arg):
  if arg != channel.type:
    await ctx.send('Please mention a channel.')

But it didn't work. I tried looking in the discord developer docs and across stackoverflow, but could not find the answer. Help would be appreciated. Thanks.

Answer 1

Try this:

import discord
from discord.ext import commands

@client.command()
async def channeldetected(ctx, channel: discord.TextChannel):
    print(channel)


@channeldetected.error
async def channeldetected_error(ctx, err):
    if isinstance(err, commands.ChannelNotFound):
        await ctx.send("Please mention a channel.")

What is happening: channeldetected funtion will try to modify the channel argument to a discord.TextChannel object. If the argument can't be modified it will raise commands.ChannelNotFound error then in the @channeldetected.error function the error can be handeled. If the error is an instance of commands.ChannelNotFound it will send message saying "Please mention a channel.".

Answer 2

To do something like this I would recommend iterating through guilds/servers channels to see if the channel's name is "arg". To do this you can use the guild attribute from ctx/context.

@client.command()
async def channeldetected(ctx, arg):
  guild = ctx.guild
  channel = None
  is_channel = False

  for i in guild.channels:
      if i.name == arg:
          is_channel = True
          channel = i

  print(is_channel, channel)