python - Discord.py 机器人获取命令剩余冷却时间

Question

我正在开发一个基于 python 的不和谐机器人，它具有以下命令

@client.command(name="Mine",
            description="Mine daily.",
            brief="Mine daily.",
            aliases=['mine', 'm'],
            pass_context=True)
@commands.cooldown(1, 30, commands.BucketType.user)
async def mine(ctx, arg):
   <content>

但是当用户达到命令的 30 秒速率限制时，它会将错误输出到 python shell

Ignoring exception in command Mine
Traceback (most recent call last):
   File "C:\Users\raner\AppData\Local\Programs\Python\Python36\lib\site- 
      packages\discord\ext\commands\bot.py", line 846, in process_commands
      yield from command.invoke(ctx)
   File "C:\Users\raner\AppData\Local\Programs\Python\Python36\lib\site- 
      packages\discord\ext\commands\core.py", line 367, in invoke
      yield from self.prepare(ctx)
   File "C:\Users\raner\AppData\Local\Programs\Python\Python36\lib\site- 
      packages\discord\ext\commands\core.py", line 351, in prepare
      raise CommandOnCooldown(bucket, retry_after)
discord.ext.commands.errors.CommandOnCooldown: You are on cooldown. Try 
again in 28.58s

我想做的是有一些东西可以获取剩余的冷却时间，并将其放入可以在不和谐时向用户说回的东西，例如'该命令有速率限制，请在28.58秒后重试'

我在网上找不到太多这方面的帮助，而且大多数都已经过时或似乎不起作用。

谢谢!

Answer 1

您需要写一个 error handler对于处理 CommandOnCooldown 的命令错误并发送消息。

@mine.error
async def mine_error(ctx, error):
    if isinstance(error, commands.CommandOnCooldown):
        msg = 'This command is ratelimited, please try again in {:.2f}s'.format(error.retry_after)
        await ctx.send(msg)
    else:
        raise error