需要等待同步函数中的函数

Question

我已经尝试解决这个问题 2 天了，在 StackOverflow 中阅读了 50 道问题以及许多关于 Python 的文档。我不知道还能尝试什么。

我的代码

import discord
import re
from datetime import datetime
import mysql.connector
from discord.ext import commands, tasks
from discord.utils import get
import atexit
from pynput import keyboard
import asyncio
from asgiref.sync import async_to_sync, sync_to_async

# The currently active modifiers
current = set()

# The key combination to check
COMBINATIONS_MUTE = [
    {keyboard.Key.shift, keyboard.KeyCode(char='a')},
    {keyboard.Key.shift, keyboard.KeyCode(char='A')}
]


COMBINATIONS_UNMUTE = [
    {keyboard.Key.shift, keyboard.KeyCode(char='b')},
    {keyboard.Key.shift, keyboard.KeyCode(char='B')}
]



GUILD_ID=guild_id
CHANNELS = ""
GUILD = ""
VOICE_CHANNEL = ""

client = commands.Bot(command_prefix = ".")

def get_channel(name):
    global CHANNELS
    for channel in CHANNELS:
        if (channel.name == name) and (channel.type.name == "voice"):
            return channel
    return False

def get_voice_channels():
    global CHANNELS
    channels = []
    for channel in CHANNELS:
        if (channel.type.name == "voice"):
            channels.append(channel)
    return channels

async def mute_all():
    global VOICE_CHANNELS
    print("mute all")
    for channel in VOICE_CHANNELS:
        for member in channel.members:
            await member.edit(mute=True)

async def unmute_all():
    global VOICE_CHANNELS
    print("unmute all")
    for channel in VOICE_CHANNELS:
        for member in channel.members:
            await member.edit(mute=False)


def on_press(key):
    if any([key in COMBO for COMBO in COMBINATIONS_MUTE]) and not key in current:
        current.add(key)
        if any(all(k in current for k in COMBO) for COMBO in COMBINATIONS_MUTE):
            asyncio.run(mute_all())
    elif any([key in COMBO for COMBO in COMBINATIONS_UNMUTE]):
        current.add(key)
        if any(all(k in current for k in COMBO) for COMBO in COMBINATIONS_UNMUTE):
            asyncio.run(unmute_all())

def on_release(key):
    if any([key in COMBO for COMBO in COMBINATIONS_MUTE]):
        current.remove(key)
    elif any([key in COMBO for COMBO in COMBINATIONS_UNMUTE]):
        current.remove(key)


@client.event
async def on_ready():
    global GUILD
    global CHANNELS
    global VOICE_CHANNELS
    global GUILD_ID

    GUILD = client.get_guild(GUILD_ID)

    CHANNELS = GUILD.channels

    VOICE_CHANNELS = get_voice_channels()
    print("bot ready")
    loop = asyncio.get_event_loop()
    with keyboard.Listener(on_press=on_press, on_release=on_release) as listener:
        listener.join()

client.run('token')

基本上它应该做的是：

1. 当我按下 Shift+A 时，将每个语音通道中的所有人静音。
2. 当我按 Shitf+B 时，取消每个语音频道中的每个人的静音。

问题是我需要等待，member.edit()但我不能，因为我不能等待，mute_all()也不unmute_all()是因为on_press(key)不是异步的，我不能让它异步，因为 keyboard_listener 不允许我。

我试过的（没有工作）

1. 使用asyncio.run()上member.edit()。
2. 使用asyncio.run()上mute_all()。
3. 制作on_press(key)异步。
4. 使用async_to_sync()上member.edit()。
5. 使用async_to_sync()上mute_all()。

我不知道还能尝试什么。

Answer 1

Keyboard.Listener 不是异步的，因此它会阻塞 中的事件循环on_ready，您需要在执行器中初始化侦听器，在这种情况下我们可以使用默认侦听器。

这是我为使这一点正常工作而所做的所有更改：

def keyboard_listener():
    with keyboard.Listener(on_press=on_press, on_release=on_release) as listener:
        listener.join()

@client.event
async def on_ready():
    global GUILD
    global CHANNELS
    global VOICE_CHANNELS
    global GUILD_ID

    GUILD = client.get_guild(GUILD_ID)

    CHANNELS = GUILD.channels

    VOICE_CHANNELS = get_voice_channels()
    print("bot ready")

    loop.run_in_executor(None, keyboard_listener)


loop = asyncio.get_event_loop()

然后我将你的全部替换asyncio.run为loop.create_task

我有一个功能版本，如果我的说明不清楚，请随时提问。

从异步到同步再回到异步是相当恶心的，但是嘿它有效，所以我想它并不愚蠢

我还稍微更改了您的mute_all和unmute_all，因为您当前的实现只会影响机器人最初连接时频道中的语音用户。这是我的更改的示例：

async def mute_all():
    print("mute all")
    for channel in client.get_guild(GUILD_ID).channels:
        if not channel.type.name == "voice":
            continue
        for member in channel.members:
            await member.edit(mute=True)