Discord.py voiceClient.play() 无法识别

Question

我正在制作一个音乐机器人是 discord.py，我已经能够让该机器人加入频道并下载 YouTube 音频，但是当它尝试播放音频时，this error occurs. 请帮助我做什么因为我已经尝试通过谷歌搜索和堆栈溢出，但我找不到任何东西。当我尝试运行播放命令时发生错误。

import discord
from discord.ext import commands
import youtube_dl
import os


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


@client.event
async def on_ready():
    print("Bot is ready.")


@client.command()
async def play(ctx, url: str):
    song_there = os.path.isfile("song.mp3")
    try:
        if song_there:
            os.remove("song.mp3")
    except PermissionError:
        await ctx.send("Wait for the currently playing music to end or use the 'stop' command.")

    channel = discord.utils.get(ctx.guild.voice_channels, name="testing")
    voice = discord.utils.get(client.voice_clients, guild=ctx.guild)
    if not voice is None:
        if not voice.is_connected():
            await channel.connect()
    else:
        await channel.connect()

    ydl_opts = {
        'format': "bestaudio",
        'postprocessors': [{
            'key': "FFmpegExtractAudio",
            'preferredcodec': "mp3",
            'preferredquality': "192"
        }]
    }

    with youtube_dl.YoutubeDL(ydl_opts) as ydl:
        ydl.download([url])

    for file in os.listdir("./"):
        if file.endswith(".mp3"):
            os.rename(file, "song.mp3")

    voice.play(discord.FFmpegPCMAudio("song.mp3"))


@client.command()
async def leave(ctx):
    voice = discord.utils.get(client.voice_clients, guild=ctx.guild)
    if not voice is None:
        if voice.is_connected():
            await voice.disconnect()
        else:
            await ctx.send("There is no channel to leave.")
    else:
        await ctx.send("There is no channel to leave.")


@client.command()
async def pause(ctx):
    voice = discord.utils.get(client.voice_clients, guild=ctx.guild)
    if not voice is None:
        if voice.is_playing():
            voice.pause()
        else:
            await ctx.send("No audio is playing.")
    else:
        await ctx.send("I am currently not in a channel.")


@client.command()
async def resume(ctx):
    voice = discord.utils.get(client.voice_clients, guild=ctx.guild)
    if not voice is None:
        if voice.is_paused():
            voice.resume()
        else:
            await ctx.send("Audio is already playing.")
    else:
        await ctx.send("I am currently not in a channel.")


@client.command()
async def stop(ctx):
    voice = discord.utils.get(client.voice_clients, guild=ctx.guild)
    if not voice is None:
        if voice.is_playing:
            voice.stop()
        else:
            await ctx.send("No audio is playing.")
    else:
        await ctx.send("I am currently not in a channel.")

client.run(Token)

Answer 1

问题是当机器人在执行命令之前没有连接到语音通道时，语音是None。您可以通过将 await channel.connect() 更新为 voice = await channel.connect() 来解决此问题：

@client.command()
async def play(ctx, url: str):
    song_there = os.path.isfile("song.mp3")
    try:
        if song_there:
            os.remove("song.mp3")
    except PermissionError:
        await ctx.send("Wait for the currently playing music to end or use the 'stop' command.")

    channel = discord.utils.get(ctx.guild.voice_channels, name="testing")
    voice = discord.utils.get(client.voice_clients, guild=ctx.guild)
    if not voice is None:
        if not voice.is_connected():
            voice = await channel.connect()
    else:
        voice = await channel.connect() 

    ydl_opts = {
        'format': "bestaudio",
        'postprocessors': [{
            'key': "FFmpegExtractAudio",
            'preferredcodec': "mp3",
            'preferredquality': "192"
        }]
    }

    with youtube_dl.YoutubeDL(ydl_opts) as ydl:
        ydl.download([url])

    for file in os.listdir("./"):
        if file.endswith(".mp3"):
            os.rename(file, "song.mp3")

    voice.play(discord.FFmpegPCMAudio("song.mp3"))