Discord.py 查找通道

Question

我正在嘗試在 discord 中創建幫助“日志”命令。

@client.command()
async def logs(ctx):
 for channel in ctx.guild.channels:
  if channel.name == "henry-logs":
     await ctx.send("Henry Logs channel is already setup. If you have access to it, it should be available in the channel list")
  else:
   await ctx.send("Henry logs channel is not found! If you have such access please create channel named **EXACTLY**")
   await ctx.send("```henry-logs```")

但是，它不會發送一次未找到的消息，而是針對每個不是“henry-logs”的通道，因為我在構建中使用了通道。

有沒有辦法可以修復它，如果通道不存在，則只發送一次，如果存在則只發送一次？

Answer 1

您可以隨時創建頻道。 所以用戶不需要手動創建它。 首先防止您遇到的錯誤發生。

channel = await ctx.guild.create_text_channel('henry-logs')

創建頻道后，您可以分配權限，例如：

await channel.set_permissions(ctx.guild.default_role, send_messages=False)

這將阻止任何非管理頻道權限成員在頻道中發送消息。

---

更新

對不起，我現在明白你的問題了：

只需打破 for 循環並設置一個臨時通道變量：

tempchan = null
for channel in ctx.guild.channels:
  if channel.name == "henry-logs":
     await ctx.send("Henry Logs channel is already setup. If you have access to it, it should be available in the channel list")
     tempchan = channel
     break;
if tempchan == null:
  await ctx.send("Henry logs channel is not found! If you have such access please create channel named **EXACTLY**")
   await ctx.send("```henry-logs```")
  

如果變量是 null - 您發送消息，如果不是，請對找到的通道執行您需要執行的操作。

Answer 2

首先，我將幫助您解決檢查通道是否存在的問題。 您可以在此處查看如何使用any 。 這是一種遍歷公會頻道的快速方法，如果任何頻道具有該名稱，它將滿足if語句並返回True 。

@client.command()
async def logs(ctx):
    if any("henry-logs" in channel.name for channel in ctx.guild.channels): # if there's any henry-logs channels, it will return True
        await ctx.send("Henry Logs channel is already setup. If you have access to it, it should be available in the channel list")
    else:
        await ctx.send("Henry logs channel is not found! If you have such access please create channel named **EXACTLY**")
        await ctx.send("```henry-logs```")

如果你不喜歡上面的壓縮代碼，下面的代碼也是一樣的。 bot 遍歷公會中的所有頻道，如果可以找到頻道henry-logs ，則返回頻道 object，這是之前的代碼沒有做的事情。

# replaced if statement
channel_found = None
for channel in ctx.guild.channels:
    if "henry-logs" in channel.name:
        channel_found = channel
        break
if channel_found != None:
    await ctx.send(f"{channel_found.mention} is already setup.")
else:
    await ctx.send("Henry logs channel is not found! If you have such access please create channel named **henry-logs**")

---

如果要自動創建通道，可以將else語句中的內容替換為以下內容。

@client.command()
async def logs(ctx):
    # this uses the first if-else statement I had shown!
    if any("henry-logs" in channel.name for channel in ctx.guild.channels):
        await ctx.send("Henry Logs channel is already setup. If you have access to it, it should be available in the channel list")
    else:
        await ctx.send("Henry logs channel is not found! I'm creating a channel now~")
        try:
            channel = await ctx.guild.create_text_channel('henry-logs')
        except: # raised if the bot doesn't have sufficient permissions
            await ctx.send("I couldn't create a `henry-logs` channel.. please make one for me, thanks!")
            return
        await ctx.send(f"I successfully created the channel {channel.mention}!")