discord.py 如何使用 wait_for 等待作者消息?

2022-01-14 00:00:00 python python-3.x discord.py

问题描述

我正在发出等待用户回复机器人的命令，但我希望机器人只接受作者的回复.

I am making a command which waits for a user to reply to the bot, but I would like the bot to only accept the author's reply.

@client.command(name='numgame',
            brief='Guess a number between 1 and 100',
            pass_context=True)
async def numgame(context):
number = random.randint(1,100)
guess = 4
while guess != 0:
    await context.send('Pick a number between 1 and 100')
    msg = await client.wait_for('message', check=check, timeout=30)
    attempt = int(msg.content)
    if attempt > number:
        await context.send(str(guess) + ' guesses left...')
        await asyncio.sleep(1)
        await context.send('Try going lower')
        await asyncio.sleep(1)
        guess -= 1
    elif attempt < number:
        await context.send(str(guess) + ' guesses left...')
        await asyncio.sleep(1)
        await context.send('Try going higher')
        await asyncio.sleep(1)
        guess -=1
    elif attempt == number:
        await context.send('You guessed it! Good job!')
        break

我的问题是任何人都可以响应选择一个数字"，而我只希望启动命令的人能够响应.

My issue is that anyone can respond to "Pick a number," whereas I would only like the person who started the command to be able to respond.

我不太确定该尝试什么，但我认为这可能与争论有关.不过，我不知道从哪里开始，所以一个解决方案将不胜感激！非常感谢.

I am not too sure what to try, but I think it may have something to do with arguments. I have no idea where to begin, though, so a solution would be appreciated! Thanks a ton.

解决方案

你需要重写你的 check 让它知道作者是谁.一种方法是使用闭包.假设您有一张现有的支票

You need rewrite your check so that it knows who the author is. One way of doing this is to use a closure. Let's say you have an existing check 

def check(message):
    return message.content == "Hello"

您可以将其替换为生成等效检查函数的函数，并将您要检查的作者注入其中

You can replace this with a function that generates equivalent check functions with the author you want to check for injected into them

def check(author):
    def inner_check(message):
        return message.author == author and message.content == "Hello"
    return inner_check

然后，您可以通过使用适当的参数调用外部检查，将内部检查传递给 wait_for:

Then you would pass the inner check to wait_for by calling the outer check with the appropriate argument:

msg = await client.wait_for('message', check=check(context.author), timeout=30)

为了您的检查，这将是

def check(author):
    def inner_check(message): 
        if message.author != author:
            return False
        try: 
            int(message.content) 
            return True 
        except ValueError: 
            return False
    return inner_check

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