不和谐的机器人命令在没有提到的情况下使用随机的提及。有问题

Question

对于python来说有点陌生，而且让它开始工作也变得毫无意义。在输入命令时，我在第23行中没有提到以下错误：

'NoneType‘对象没有属性’‘

我不知道为什么它试图使用这个响应部分作为它的时候，当有一个提到，无用的我错过了什么。

import discord
from redbot.core import commands
import random

class boop(commands.Cog):
    """My custom cog"""

    def __init__(self, bot):
        self.bot = bot

    @commands.command()
    async def boop(self, ctx, user: discord.User=None):
        """Boop Someone"""
        # Your code will go here
        author_name = ctx.author.mention
        member = random.choice(ctx.guild.members)
        
        randomuser = [f"{author_name} booped {member.mention}",
                     f"{author_name} booped {member.mention} on the nose",
                     f"{author_name} booped {member.mention}'s snoot",
                     f"{author_name} gave {member.mention} a boop"]
                     
        mentionuser = [f"{author_name} booped {user.mention}",
                     f"{author_name} booped {user.mention} on the nose",
                     f"{author_name} booped {user.mention}'s snoot",
                     f"{author_name} gave {user.mention} a boop"]
        if not user:        
          await ctx.send(random.choice(randomuser))
        else:
          await ctx.send(random.choice(mentionuser))

Answer 1

运行命令时，user变为None，因为这是函数定义中设置的参数的默认值。

然后：

mentionuser = [f"{author_name} booped {user.mention}",
                     f"{author_name} booped {user.mention} on the nose",
                     f"{author_name} booped {user.mention}'s snoot",
                     f"{author_name} gave {user.mention} a boop"]

您正在尝试检索mention属性的NoneType。这就是错误产生的原因。要避免这种情况，请将mentionuser定义包括在else块中：

...
else:
  mentionuser = [f"{author_name} booped {user.mention}",
                       f"{author_name} booped {user.mention} on the nose",
                       f"{author_name} booped {user.mention}'s snoot",
                       f"{author_name} gave {user.mention} a boop"]
  await ctx.send(random.choice(mentionuser))

Answer 2

@bot.command()
async def boop(ctx, target:discord.Member=None):
  author=ctx.author.mention
  if not target:
    members=ctx.guild.members
    target=random.choice(members)
  target=target.mention
  responses=[f'{author} has booped {target}!', f'{target}, {author} has booped you!']
  await ctx.send(random.choice(responses))

这对我有用，但我不使用齿轮，我的客户电话也不一样。我认为您的问题在于您使用的是用户对象而不是成员。