一尘不染

Discord PY 将 Lambda 与 channel.history().find() 结合使用,可能吗?

py

我正在尝试使用我发现的这段代码来检查用户上次在 Discord 服务器的任何频道上发送消息的时间。我找到的来源是最旧的消息,但看起来是我需要的 - 但我在 channel.history().find 上遇到错误。错误是:

AtrributeError: async_generator object has no attribute "find"

.find 不能与 channel.history 一起使用还是我用错了?

#for a given user, check channel history for posts made by that user. 

@bot.command()
async def lastMessage(ctx):

users_id = ctx.author.id
oldestMessage = None
for channel in ctx.guild.text_channels
    fetchMessage = await channel.history().find(lambda m: m.author.id == users_id)
    if fetchMessage is None:
        continue


    if oldestMessage is None:
        oldestMessage = fetchMessage
    else:
        if fetchMessage.created_at > oldestMessage.created_at:
            oldestMessage = fetchMessage

if (oldestMessage is not None):
    await ctx.send(f"Oldest message is {oldestMessage.content}")
else:
    await ctx.send("No message found.")

然后我通过循环消息来做到这一点。不过,这将花费大量时间(例如 24 小时)。我想我可以通过向后循环消息来节省一点时间,也许可以将所有消息保存到列表中而不是在循环中重新获取。是否有更好/更快的方法来使用 lambda 执行此操作?

    for channel in ctx.guild.text_channels:

        fetchMessage = None

        async for message in ctx.channel.history(limit=2000):

            if message.author == member:
                fetchMessage = message

                if newestMessage is None:
                    newestMessage = fetchMessage
                else:
                    if fetchMessage.created_at < newestMessage.created_at:
                        newestMessage = fetchMessage



     print(newestMessage)

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2023-02-01

共1个答案

一尘不染

获取的历史是有序的。因此,如果您发现您发现的第一个事件是该频道中的最新事件,那么您可以继续下一个事件。其次,您可以指定一个 after 命令,例如 6 个月,以防止脚本一直爬回到频道开始。

      newestMessage = None
      for channel in ctx.guild.text_channels: # theoretically you could parallise these too
            async for message in ctx.channel.history(limit=2000, after=...):

                if message.author == member:
                    if newestMessage is None:
                        newestMessage = message
                    else:
                        if message.created_at < newestMessage.created_at:
                            newestMessage = message
                    break # User was found no need to continue looking in this channel

      if newest Message is None:
          # user never talked
      else:
          # was found

此外,您还可以为所有用户执行一次此操作,并将它们存储在字典、csv 文件等中,并每周左右运行一次,最坏的情况下您只需几秒钟即可进行查找。

2023-02-01