我想知道如何通过消息 ID 获取消息。我努力了discord.fetch_message(id) and discord.get_message(id)，但两者都会提出：

Command raised an exception: AttributeError: module 'discord' has no attribute 'fetch_message'/'get_message'

收到消息时，您需要abc.Messageable对象 - 本质上是一个可以发送消息的对象，例如文本通道、DM 等。

Example:

@bot.command()
async def getmsg(ctx, msgID: int): # yes, you can do msg: discord.Message
                                   # but for the purposes of this, i'm using an int

    msg = await ctx.fetch_message(msgID) # you now have the message object from the id
                                         # ctx.fetch_message gets it from the channel
                                         # the command was executed in


###################################################

@bot.command()
async def getmsg(ctx, channel: discord.TextChannel, member: discord.Member):
    msg = discord.utils.get(await channel.history(limit=100).flatten(), author=member)
    # this gets the most recent message from a specified member in the past 100 messages
    # in a certain text channel - just an idea of how to use its versatility

参考：

• abc.Messageable https://discordpy.readthedocs.io/en/latest/api.html#discord.abc.Messageable
• TextChannel.history() https://discordpy.readthedocs.io/en/latest/api.html#discord.TextChannel.history
• TextChannel.fetch_message() https://discordpy.readthedocs.io/en/latest/api.html#discord.TextChannel.fetch_message
• Context.fetch_message() https://discordpy.readthedocs.io/en/latest/ext/commands/api.html#discord.ext.commands.Context.fetch_message