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[英]RuntimeError: There is no current event loop in thread 'Thread-1' , multithreading and asyncio error
[英]RuntimeError when multithreading python "RuntimeError: There is no current event loop in thread 'Thread-1'."
我正在嘗試使用相同的腳本一次運行多個不和諧機器人。 我這樣做的方法是下載一個 csv 文件,以獲取機器人令牌和機器人名稱。 然后我開始我的腳本:
import time, csv, re, random, string, sys, os, asyncio
from datetime import datetime
from threading import Thread
import discord
from dotenv import load_dotenv
from discord_webhook import DiscordWebhook, DiscordEmbed
def main(bottoken, botname):
TOKEN = (bottoken)
client = discord.Client()
@client.event
async def on_ready():
print(f'{client.user.name} has connected to Discord!')
@client.event
async def on_message(message):
#do stuff
print('Do stuff')
client.run(TOKEN)
def runtask():
if __name__ == '__main__':
with open('botinfo.csv', 'r') as f:
reader = csv.reader(f, delimiter=',')
for i, row in enumerate(reader):
Thread(target = main, args=(row[0], row[1])).start()
if __name__ == '__main__':
runtask()
但是后來我收到了這個錯誤:
Exception in thread Thread-1:
Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/threading.py", line 917, in _bootstrap_inner
self.run()
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/threading.py", line 865, in run
self._target(*self._args, **self._kwargs)
File "/Users/alexforman/Documents/GitHub/bot-price-monitor/frontend_multithread.py", line 14, in main
client = discord.Client()
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/discord/client.py", line 216, in __init__
self.loop = asyncio.get_event_loop() if loop is None else loop
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/asyncio/events.py", line 644, in get_event_loop
% threading.current_thread().name)
RuntimeError: There is no current event loop in thread 'Thread-1'.
Exception in thread Thread-2:
Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/threading.py", line 917, in _bootstrap_inner
self.run()
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/threading.py", line 865, in run
self._target(*self._args, **self._kwargs)
File "/Users/alexforman/Documents/GitHub/bot-price-monitor/frontend_multithread.py", line 14, in main
client = discord.Client()
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/discord/client.py", line 216, in __init__
self.loop = asyncio.get_event_loop() if loop is None else loop
File "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/asyncio/events.py", line 644, in get_event_loop
% threading.current_thread().name)
RuntimeError: There is no current event loop in thread 'Thread-2'.
有沒有人對我如何解決它有任何想法?
您不需要為每個機器人啟動一個單獨的線程,asyncio 事件循環完全能夠同時為所有機器人提供服務。 (這就是事件循環的設計目的。)
您只需要將所有機器人作為同一個 asyncio 事件循環的協程啟動:
async def run_client(bottoken, botname):
TOKEN = (bottoken)
client = discord.Client()
@client.event
async def on_ready():
print(f'{client.user.name} has connected to Discord!')
@client.event
async def on_message(message):
#do stuff
print('Do stuff')
# can't use client.run() because it would block the event loop
# but we can use client.start(), which is a coroutine that does
# the same thing (and which is internally called by client.run)
await client.start(TOKEN)
async def main():
coros = []
with open('botinfo.csv', 'r') as f:
reader = csv.reader(f, delimiter=',')
for i, row in enumerate(reader):
coros.append(run_client(row[0], row[1]))
await asyncio.gather(*coros)
if __name__ == '__main__':
asyncio.run(main())
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