Discord.py failing to send message to a specific channel in a cog/extension file-CodePudding

I just recently started using cogs/extension files for Discord.py and ran into some issue that I don't know how to fix. I'm trying to send a message in a specific channel but I always just get the error AttributeError: 'NoneType' object has no attribute 'send'. I know that I can send a message in a specific channel with:

@client.command()
async def test(ctx):
  await ctx.send("test")
  channel = client.get_channel(1234567890)
  await channel.send("test2")

And this works perfectly fine in my "main file", but not in my "extension file", so it's not because of a wrong ID. The await ctx.send("test") works without problems as well, together with any other command I have, just the channel.send is causing troubles.

I'm importing the exact same libraries & co and otherwise should have the exact same "setup" in both files as well.

CodePudding user response：

NoneType error means that it doesn't correctly recognize the channel. When you use get_channel you are looking for the channel in the bot's cache which might not have it. You could use fetch_channel instead - which is an API call.

@client.command()
async def test(ctx):
  await ctx.send("test")
  channel = await client.fetch_channel(1234567890)
  await channel.send("test2")

CodePudding user response：

As you know, the error occurs because your channel is not recognized. The solution is fetch_channel(channel_id). The problem lies in your channel = client.get_channel (1234567890).

Try adding await before client. Next replace get_channel with fetch_channel.

For general use consider your get_channel(), instead you need fetch_channel (channel_id) to retrieve an x.GuildChannel or x.PrivateChannel with the specified ID.

@client.command()
async def test(ctx):

  await ctx.send("test")
  channel = await client.fetch_channel(1234567890) #update
  await channel.send("test2")