discord py while循环无故中断

Question

我制作了一个不和谐的机器人，它应该每天 22:00 UTC 时间从文本文件中发送报价。虽然它确实工作了一次，但似乎第一天之后 while 循环就中断了。

import discord
import random
import datetime

client = discord.Client()
text_channel = None

@client.event
async def on_message(message):

    global text channel

    if message.author == client.user:
        return

    cntnt = message.content

    if cntnt == '!add_channel':
        text_channel = message.channel
        print("Assigned ", text_channel, " as channel.")        
        await message.delete()

    if cntnt == '!start_quote':
        if text_channel != None:
            await message.delete()
            while True:
                current_time = datetime.datetime.now()
                print(current_time)
                await asyncio.sleep(1)
                time1 = current_time.hour
                time2 = current_time.minute
                if time1 == 22 and time2 == 0:
                    with open('quotes.txt', 'r', encoding='utf8') as file:
                        quotes = file.readlines()
                    index = random.randint(0, len(quotes))
                    answer = str(quotes[index + 1])
                    await text_channel.send("Today's quote: " + answer)
                    await asyncio.sleep(60)
        else:
            print("No channel assigned.")
            await message.delete()


client.run("TOKEN")

Answer 1

while 循环可能实际上并未中断，但您的机器人正在超载。您将这个无限期运行的 while 循环放在 on_message 处理程序中。这意味着每次有人发送消息时都会开始一个新循环。

一个更好的方法是使用discord.ext.tasks。这是一个例子：

from discord.ext import tasks

@tasks.loop(hours=24)
async def send_quote():
   # send the quote here, no while loop needed

send_quote.start()  # don't forget, you always have to call the start() method

[编辑] 如果您需要在每天的某个时间发送消息，那么您可以这样做：

import datetime

last_send = None
send_at = datetime.time(hours=12)  # send at the twelf hour every day

# wait at least 2 hours before allowing a second quote.
# this prevents sending twice at the same time.
min_difference = datetime.timedelta(hours=2)

@tasks.loop(minutes=1)
async def send_quote():
   # First, check if the time is right.
   now = datetime.datetime.now()

   # check that it's been at least 10 minutes since the last send
   # to prevent sending twice at the same time.
   if last_send is None or (now - last_send < min_difference):
       # this will check if the hour is correct
       if send_at.hour - now.hour == 0:
           # send the quote here
           last_send = now  # update last_send

我无法对此进行测试，所以我不能保证它会立即工作。

Answer 2

我建议的第一件事不是使用if cntnt，而是移至discord.ext 包。

例子：

@bot.command()
async def test(ctx):
    await ctx.send("Hello")