无法在 Heroku 中运行 Discord bot 命令

Question

我一直在制作一个不和谐的机器人来托管在 Heroku 上：

目录的一般形式是：

bot
   cogs
       fun.py
   main.py

main.py 在哪里（代码简化）：

from discord import Embed, File
from discord.ext.commands import Bot as BotBase
from datetime import datetime
from asyncio import sleep
import os

PREFIX = "!"

OWNER_IDS = [<IDS>]
BOT_CHANNEL = <CHANNEL> #hidden for privacy purposes
GUILD_ID = <ID> #hidden for privacy purposes

COGS = [file[:-3] for file in os.listdir("bot/cogs") if file.endswith('.py')]

TOKEN = os.getenv("DISCORD_TOKEN")

class Ready(object):
    def __init__(self):
        for cog in COGS:
            setattr(self, cog, False)

    def ready_up(self, cog):
        setattr(self, cog, True)
        print(f"{cog} cog ready")

    def all_ready(self):
        return all([getattr(self, cog) for cog in COGS])

class Bot(BotBase):
    def __init__(self):
        self.PREFIX = PREFIX
        self.ready = False
        self.cogs_ready = Ready()
        self.guild = None

        super().__init__(command_prefix=PREFIX, owner_ids=OWNER_IDS)

    def setup(self):
        for cog in COGS:
            self.load_extension(f"bot.cogs.{cog}")
            print(f" {cog} cog loaded")

        print("Setup complete")

    def run(self):

        print("Running setup...")
        self.setup()

        self.TOKEN = TOKEN

        print("Running bot...")
        super().run(self.TOKEN, reconnect=True)

    async def on_connect(self):
        print("Bot connected")

    async def on_disconnect(self):
        print("Bot disconnected")

    async def on_error(self, err, *args, **kwargs):
        if err == "on_command_error":
            await args[0].send("Something went wrong")

        await self.stdout.send("An error occured.")
        raise

    async def on_command_error(self, ctx, exc):
        if isinstance(exc, CommandNotFound):
            pass
        else:
            raise exc.original

    async def on_ready(self):
        if not self.ready:

            self.guild = self.get_guild(GUILD_ID)
            self.stdout = self.get_channel(BOT_CHANNEL)

            while not self.cogs_ready.all_ready():
                await sleep(0.5)

            self.ready = True
            print("Bot ready")

            await self.stdout.send("Now Online!")

        else:
            print("Bot reconnected")

    async def on_message(self, message):
        pass


bot = Bot()
bot.run()

而 fun.py 是（代码简化）：

from discord import Member
from discord.ext.commands import Cog
from discord.ext.commands import command

class Fun(Cog):
    def __init__(self, bot):
        self.bot = bot

    @command(name="hello", aliases=["hi", "Hello", "Hi"], hidden=False)
    async def say_hello(self, ctx):
        await ctx.send(f"Hello {ctx.author.mention}!")

    @Cog.listener()
    async def on_ready(self):
        if not self.bot.ready:
            self.bot.cogs_ready.ready_up("fun")
        #await self.bot.stdout.send("Fun cog ready")

def setup(bot):
    bot.add_cog(Fun(bot))

当我在本地运行代码时，它运行良好。

但是，当我在 Heroku 上运行它时（只做一些小的改动，比如有一个 procfile、requirements.txt 等），机器人就会启动

2021-08-11T01:23:55.582108+00:00 heroku[worker.1]: State changed from starting to up
2021-08-11T01:23:58.388072+00:00 app[worker.1]: Running setup...
2021-08-11T01:23:58.390370+00:00 app[worker.1]: fun cog bot init
2021-08-11T01:23:58.390419+00:00 app[worker.1]:  fun cog loaded
2021-08-11T01:23:58.390428+00:00 app[worker.1]: Setup complete
2021-08-11T01:23:58.390440+00:00 app[worker.1]: Running bot...
2021-08-11T01:23:58.757181+00:00 app[worker.1]: Bot connected
2021-08-11T01:23:59.000000+00:00 app[api]: Build succeeded
2021-08-11T01:24:00.759729+00:00 app[worker.1]: fun cog ready
2021-08-11T01:24:01.260022+00:00 app[worker.1]: Bot ready

但是当我尝试运行类似“！hello”的命令时，什么都不会发生（无论是在 discord 频道还是在应用程序日志中）。

如果有人可以向我解释为什么 Heroku 上的不和谐命令在本地运行时不起作用，我将非常感激 :)

Answer 1

一个潜在的解决方案是使用正确的方式给你的机器人一个前缀：

bot = commands.Bot(command_prefix="!")

而在 Cogs 中，commands 和 listeners 是

@commands.command()
async def hello(self, ctx):
#code here

@commands.Cog.listener('on_ready')
async def randomtext(self):
#code here

我对heroku不太熟悉，但我知道

是的，我知道你说它在本地工作，所以这让你的问题更加令人费解，但这里有一些你可以尝试的东西