同時運行異步機器人到 Tkinter GUI

Question

我正在嘗試將 Python Twitch 機器人（ https://github.com/TwitchIO/TwitchIO ）集成到 Tkinter GUI 中。 這是我從twitch.io.ext.commands.bot子類化的機器人

import os

from twitchio.ext import commands
from dotenv import load_dotenv
from os.path import join, dirname

class Bot(commands.Bot):

    def __init__(self):

        dir_path = os.path.dirname(os.path.realpath(__file__))
        dotenv_path = join(dir_path, '.env')
        load_dotenv(dotenv_path)

        TMI_TOKEN = os.environ.get('TMI_TOKEN')
        CLIENT_ID = os.environ.get('CLIENT_ID')
        BOT_NICK = os.environ.get('BOT_NICK')
        BOT_PREFIX = os.environ.get('BOT_PREFIX')
        CHANNEL = os.environ.get('CHANNEL')

        super().__init__(irc_token=TMI_TOKEN,
                         client_id=CLIENT_ID,
                         nick=BOT_NICK,
                         prefix=BOT_PREFIX,
                         initial_channels=[CHANNEL])


    async def start(self):
        await self._ws._connect()

        try:
            await self._ws._listen()
        except KeyboardInterrupt:
            pass
        finally:
            self._ws.teardown()


    async def stop(self):
        self._ws.teardown()


    async def event_ready(self):
        print("ready")


    async def event_message(self, message):
        print(message.content)
        await self.handle_commands(message)


    @commands.command(name='test')
    async def my_command(self, ctx):
        await ctx.send(f'Hello {ctx.author.name}!')

這是 Tkinter GUI

try:
    import Tkinter as Tk
except ModuleNotFoundError:
    import tkinter as Tk

import asyncio

from bot import Bot

bot = Bot()
loop = asyncio.get_event_loop()

def on_start():
    print("start")
    loop.run_until_complete(bot.start())

def on_stop():
    print("stop")
    loop.run_until_complete(bot.stop())

if __name__ == '__main__':
    root = Tk.Tk()
    frame = Tk.Frame(root)

    start_button = Tk.Button(frame.master, text="start", command = on_start)
    start_button.pack()

    stop_button = Tk.Button(frame.master, text="stop", command = on_stop)
    stop_button.pack()

    root.mainloop()

因此，當按下開始按鈕時，機器人會自行啟動並連接到 Twitch。 但是，GUI 在 on_start() 中的on_start() loop.run_until_complete(bot.start())之后卡住了，它永遠不會返回。 我如何能夠將機器人同時運行到 GUI？

Answer 1

您可以嘗試在不同的線程中運行事件循環，並以線程安全的方式向其提交任務。 例如：

loop = asyncio.get_event_loop()
threading.Thread(daemon=True, target=loop.run_forever).start()

# ... in the GUI:

def on_start():
    print("start")
    asyncio.run_coroutine_threadsafe(loop, bot.start())

def on_stop():
    print("stop")
    asyncio.run_coroutine_threadsafe(loop, bot.stop())