如何获取Discord用户输入并匹配症状列表实现诊断机器人？

你的核心问题是没有正确获取用户的输入消息，以及错误地将上下文对象ctx和症状列表做比对。下面分两种方案给出修复后的代码，你可以根据需求选择：

方案一：保留按钮功能的完整实现 #

这个方案会在用户点击"Yes"按钮后，引导用户输入症状并完成匹配：

import discord
from discord.ext import commands

allergy_symptoms = ["sneezing", "runny nose", "congestion", "cough", "wheezing", "shortness of breath", "itchy eyes", "hives", "rash", "itchiness"]

bot = commands.Bot(command_prefix="!", intents=discord.Intents.all())

class MyView(discord.ui.View):
    def __init__(self, ctx):
        super().__init__(timeout=60)  # 设置按钮超时时间（60秒）
        self.ctx = ctx

    @discord.ui.button(label="Yes", style=discord.ButtonStyle.green)
    async def button_callback(self, interaction: discord.Interaction, button: discord.ui.Button):
        await interaction.response.send_message("Excellent. To start, please list any symptoms you may be experiencing in a single message. For example: I have been experiencing congestion, sneezing, and a runny nose.")
        
        # 等待用户发送症状消息（只接收命令发起者的消息）
        def check(m):
            return m.author == self.ctx.author and m.channel == self.ctx.channel
        
        try:
            symptom_msg = await bot.wait_for("message", check=check, timeout=60)
        except TimeoutError:
            await self.ctx.send("你超时未输入，诊断流程已终止。")
            return
        
        # 处理用户输入：拆分症状并转为小写，去除无关字符
        user_symptoms = [s.strip().lower() for s in symptom_msg.content.split(",")]
        
        # 匹配过敏症状
        matched_symptoms = [symptom for symptom in user_symptoms if symptom in allergy_symptoms]
        if matched_symptoms:
            await self.ctx.send(f"你可能患有过敏症！匹配到的症状：{', '.join(matched_symptoms)}")
        else:
            await self.ctx.send("暂时未匹配到过敏症的典型症状。")

@bot.command()
async def diagnose(ctx):
    await ctx.send(f'Hello, I am the R.E.M.E.D.Y. Bot. I can assist you with a diagnosis and recommend a remedy for it. Is this something you are looking for?', view=MyView(ctx))

# 替换为你的机器人token
bot.run("YOUR_BOT_TOKEN")

关键修复点： #

• 给MyView传入ctx，确保能识别命令发起者
• 使用bot.wait_for("message")获取用户输入，通过check函数过滤非目标用户的消息
• 对用户输入做清洗（转小写、去空格），再和过敏列表比对
• 添加超时处理，避免机器人一直等待

方案二：简化版本（移除按钮，直接引导） #

如果不需要按钮功能，代码可以更简洁：

import discord
from discord.ext import commands

allergy_symptoms = ["sneezing", "runny nose", "congestion", "cough", "wheezing", "shortness of breath", "itchy eyes", "hives", "rash", "itchiness"]

bot = commands.Bot(command_prefix="!", intents=discord.Intents.all())

@bot.command()
async def diagnose(ctx):
    await ctx.send(f'Hello, I am the R.E.M.E.D.Y. Bot. I can assist you with a diagnosis and recommend a remedy for it.')
    await ctx.send("To start, please list any symptoms you may be experiencing in a single message. For example: I have been experiencing congestion, sneezing, and a runny nose.")
    
    # 等待用户输入
    def check(m):
        return m.author == ctx.author and m.channel == ctx.channel
    
    try:
        symptom_msg = await bot.wait_for("message", check=check, timeout=60)
    except TimeoutError:
        await ctx.send("你超时未输入，诊断流程已终止。")
        return
    
    # 处理输入并匹配
    user_symptoms = [s.strip().lower() for s in symptom_msg.content.split(",")]
    matched_symptoms = [symptom for symptom in user_symptoms if symptom in allergy_symptoms]
    
    if matched_symptoms:
        await ctx.send(f"你可能患有过敏症！匹配到的症状：{', '.join(matched_symptoms)}")
    else:
        await ctx.send("暂时未匹配到过敏症的典型症状。")

bot.run("YOUR_BOT_TOKEN")

注意事项： #

1. 必须开启机器人的Message Content Intent，否则无法读取用户发送的消息内容
2. 替换代码中的YOUR_BOT_TOKEN为你自己的机器人令牌
3. 可以根据需求调整超时时间（当前为60秒）

内容的提问来源于stack exchange，提问作者senorbryan