Python （discord.py）和#x130；要为discord服务器进行点名吗

我想做一个不和谐机器人。这就是我想要的：当我说“！yoklama 11.10.2020.txt'（或其他）bot向我发送了我所在语音频道的参与者列表。[不是1个频道（我所在的频道）]，但我不知道该怎么办。 然后我做了一些研究，我发现我的请求也有类似的地方。 但它们没有正常工作。 这是我找到的代码：

import discord
from discord.ext.commands import Bot
from discord.ext import commands

client = commands.Bot(command_prefix='!')

@client.command()
async def attendance(ctx, filename):
    channel = client.get_channel(755129236397752441) # Replace with voice channel ID

    with open(filename, 'w') as file:
        for member in channel.members:
            file.write(member.name + '\n')


client.run('mytoken')

这些代码正在工作（当我运行时，它们不会给我错误），但当我说！注意力测试.txt 我的python shell对我说：

Ignoring exception in command attendance:
Traceback (most recent call last):
  File "C:\Users\Yunus Emre KISA\AppData\Local\Programs\Python\Python38-32\lib\site- 
packages\discord\ext\commands\core.py", line 85, in wrapped
    ret = await coro(args, **kwargs)
  File "C:\bot2\bot2.py", line 10, in attendance
    for member in channel.members:
AttributeError: 'NoneType' object has no attribute 'members'

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "C:\Users\Yunus Emre KISA\AppData\Local\Programs\Python\Python38-32\lib\site- 
packages\discord\ext\commands\bot.py", line 903, in invoke
    await ctx.command.invoke(ctx)
  File "C:\Users\Yunus Emre KISA\AppData\Local\Programs\Python\Python38-32\lib\site- 
packages\discord\ext\commands\core.py", line 859, in invoke
    await injected(ctx.args, **ctx.kwargs)
  File "C:\Users\Yunus Emre KISA\AppData\Local\Programs\Python\Python38-32\lib\site- 
packages\discord\ext\commands\core.py", line 94, in wrapped
    raise CommandInvokeError(exc) from exc
discord.ext.commands.errors.CommandInvokeError: Command raised an exception: AttributeError: 
'NoneType' object has no attribute 'members

你们看，伙计们，我什么都不懂，请帮帮我。 我发现了这些问题，但它对我不起作用：

我不必在命令中传递文件，只需编写函数：

with open("file.txt", "w") as f:

---

谢谢你的回答，但当我对机器人说！测试它不会给出任何反应（python shell也是如此）这是我的代码：从discord导入discord.ext.commands从discord导入Bot.ext导入commands client=commands.Bot（command_prefix='！'）@client.command（）异步定义测试（ctx）：guild=ctx.guild channel=discord.utils.get（guild.voice_channels，name='a'））对于channel.members中的成员：打印（'test'），并将open（“file.txt”，“w”）作为f:对于channel.members:file.write（member.name+'\n'）client.run（'mytoken'）中的成员

with open("file.txt", "w") as f: