python - discord.py 对 cog 中每个命令的错误处理

Question

我想向我的 cog 添加一些错误处理，因为所有命令都需要用户的参数。然而，我发现做到这一点的唯一方法是要求每个命令都有自己的错误句柄，这非常耗时，因为我有 50 多个命令都采用这种格式。

如果可能的话，我希望能够创建一个错误处理程序，该处理程序仅适用于该齿轮中的命令。我该怎么办？

命令示例:

  @commands.command()
  async def poke(self, ctx, tag: Optional[discord.Member]=None, *args):
    self.poke = False
    await ctx.send(f"{tag.mention} Has been poked by {ctx.author.mention}")

  @commands.command()
  async def fight(self, ctx, tag: Optional[discord.Member]=None, *args):
    self.fight = False
    await ctx.send(f"{tag.mention} Has been fought by {ctx.author.mention}")
  

Answer 1

特定于 Cog 的错误处理可以通过覆盖 cog_command_error 来完成在齿轮类中:

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

    @commands.command()
    async def poke(self, ctx, tag: Optional[discord.Member] = None, *args):
        self.poke = False
        await ctx.send(f"{tag.mention} Has been poked by {ctx.author.mention}")

    @commands.command()
    async def fight(self, ctx, tag: Optional[discord.Member]=None, *args):
        self.fight = False
        await ctx.send(f"{tag.mention} Has been fought by {ctx.author.mention}")

    # Cog error handler
    async def cog_command_error(self, ctx, error):
        await ctx.send(f"An error occurred in the Test cog: {error}")