Discord.py 查找频道

Question

我正在尝试在 discord 中创建帮助“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```")

但是它不会发送一次未找到的消息，而是针对每个不是“henry-logs”的频道，因为我在构建中使用了频道。

有没有办法修复它，如果频道不存在则只发送一次，如果存在则只发送一次？

Answer 1

您可以随时创建频道。所以用户不需要手动创建它。首先防止您遇到的错误发生。

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

创建频道后，您可以分配权限，例如：

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

这将阻止任何非管理频道权限的成员在频道中发送消息。

---

更新

对不起，我现在明白你的问题了：

只需打破 for 循环并设置一个临时通道变量：

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```")
  

如果变量为 null - 您发送消息，如果不是，请对找到的频道执行您需要执行的操作。

Answer 2

首先我会帮你解决检查频道是否存在的问题。你可以看看如何使用any here。这是一种快速迭代公会频道的方法，如果任何频道具有该名称，它将满足if 语句并返回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```")

如果你不喜欢上面的压缩代码，下面的代码也是一样的。 bot 遍历公会中的所有频道，如果可以找到频道henry-logs，则返回一个频道对象，这是之前的代码没有做的。

# 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**")

---

如果您想自动创建频道，可以将 else 语句中的内容替换为以下内容。

@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}!")