Discord Bot check message author and emoji reaction error: 1 positional argument but 2 were given

huangapple
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英文:

Discord Bot check message author and emoji reaction error: 1 positional argument but 2 were given

问题

抱歉，以下是翻译好的部分：

  1. 我正在尝试创建Discord机器人命令，其中机器人会创建表情符号，如果用户对该表情符号做出反应 - 机器人将执行一些所需的操作，但在检查部分出现以下错误：
  3. > discord.ext.commands.errors.CommandInvokeError: 命令引发了异常：TypeError: check()接受1个位置参数，但提供了2个
  5. 机器人发送消息并附加表情符号，但是检查部分引发错误，我不知道如何解决它。
  7. 这是我的代码：
  9. 错误出现在代码的倒数第二行
  11. @commands.command()
  12. async def test(self, ctx):
  13.     author = ctx.author
  14.     message = await ctx.send('test')
  16.     emote = '✔'
  18.     for e in emote:
  19.         await message.add_reaction(e)
  21.     def check(author):
  22.         def react_check(reaction, emoji):
  23.             return message.author == author and reaction.message.id == msg.id and reaction.emoji == emoji
  24.         return check
  26.     await self.client.wait_for('reaction_add', check=check(author, emote), timeout=60)
  27.     await ctx.send('检查后的一些操作')
英文:

I'm trying to make Discord bot command, where Bot creates Emoji and if user reacts on this Emoji - bot doing some required stuff, but getting this error on check part:

> discord.ext.commands.errors.CommandInvokeError: Command raised an exception: TypeError: check() takes 1 positional argument but 2 were given

The Bot sends the message and attaches Emoji to it, but however, the check part throws an error and I don’t know how to solve it.

Here's my code:

An error is issued in the penultimate line of code

  1. @commands.command()
  2. async def test(self, ctx):
  3.     author = ctx.author
  4.     message = await ctx.send('test')
  6.     emote = '✔'
  8.     for e in emote:
  9.         await message.add_reaction(e)
  11.     def check(author):
  12.         def react_check(reaction, emoji):
  13.             return message.author == author and reaction.message.id==msg.id and reaction.emoji==emoji
  14.         return check
  16.     await self.client.wait_for('reaction_add', check=check(author, emote), timeout=60)
  17.     await ctx.send('some stuff after check')

答案1

得分: 1

你实际上可以在discord.py文档中找到一个很好的示例。

  1. @client.event
  2. async def on_message(message):
  3.     if message.content.startswith('$thumb'):
  4.         channel = message.channel
  5.         await channel.send('Send me that 👍 reaction, mate')
  7.         def check(reaction, user):
  8.             return user == message.author and str(reaction.emoji) == '👍'
  10.         try:
  11.             reaction, user = await client.wait_for('reaction_add', timeout=60.0, check=check)
  12.         except asyncio.TimeoutError:
  13.             await channel.send('👎')
  14.         else:
  15.             await channel.send('👍')

正如你所看到的问题是：你将已经带有参数执行的函数 "check" 传递给了 "wait_for" 函数。这是不正确的做法，尤其是因为你的变量 "reaction" 和 "user" 从未被定义过。

你实际上需要做的是：

  1. def check(author):
  2.     def react_check(reaction, emoji):
  3.         return message.author == author and reaction.message.id == msg.id and reaction.emoji == emoji
  4.     return check
  6. author, emote = await self.client.wait_for('reaction_add', check=check, timeout=60)

这将传递函数而不是函数的返回值到 "wait_for" 中。

英文:

You can actually find a very nice example in the discord.py documentation.

  1. @client.event
  2. async def on_message(message):
  3.     if message.content.startswith('$thumb'):
  4.         channel = message.channel
  5.         await channel.send('Send me that 👍 reaction, mate')
  7.         def check(reaction, user):
  8.             return user == message.author and str(reaction.emoji) == '👍'
  10.         try:
  11.             reaction, user = await client.wait_for('reaction_add', timeout=60.0, check=check)
  12.         except asyncio.TimeoutError:
  13.             await channel.send('👎')
  14.         else:
  15.             await channel.send('👍')

As you can see your problem is the following: You are passing your function check already having executed with arguments into the wait_for function. That is the incorrect way to do it, especially because your variables reaction and user have never been defined.

What you actually need to do is the following:

  1. def check(author):
  2.     def react_check(reaction, emoji):
  3.         return message.author == author and reaction.message.id==msg.id and reaction.emoji==emoji
  4.     return check
  6. author, emote = await self.client.wait_for('reaction_add', check=check, timeout=60)

This passes the function, not the returned value from the function into wait_for.

答案2

得分: 1

主要错误在函数check中，为了修复这个错误，它将稍微更改，但将正确工作。

  1. def check(reaction, user):
  2.     return (reaction.message.id == message.id) and (user.id == ctx.author.id) and (str(reaction) in emote)

还有一些代码改进，完整的代码如下：

  1. @commands.command()
  2. async def test(self, ctx):
  3.     author = ctx.author
  4.     message = await ctx.send('test')
  6.     emote = '✔'
  8.     for e in emote:
  9.         await message.add_reaction(e)
  11.     def check(reaction, user):
  12.         return (reaction.message.id == message.id) and (user.id == ctx.author.id) and (str(reaction) in emote)
  14.     try:
  15.         reaction, user = await self.client.wait_for('reaction_add', check=check, timeout=60)
  16.     except asyncio.TimeoutError:
  17.         await ctx.send("Timed out")
  18.         return
  19.     if str(reaction) == '✔':
  20.         await ctx.send('some stuff')
英文:

Main error is in function check and for fixing the error it will be slightly changed, but will work correctly.

  1. def check(reaction, user):
  2.     return (reaction.message.id == message.id) and (user.id == ctx.author.id) and (str(reaction) in emote)

And just some improvements in code, so full code is here below:

  1. @commands.command()
  2. async def test(self, ctx):
  3.     author = ctx.author
  4.     message = await ctx.send('test')
  6.     emote = '✔'
  8.     for e in emote:
  9.         await message.add_reaction(e)
  11.     def check(reaction, user):
  12.         return (reaction.message.id == message.id) and (user.id == ctx.author.id) and (str(reaction) in emote)
  14.     try:
  15.         reaction, user = await self.client.wait_for('reaction_add', check=check, timeout=60)
  16.     except asyncio.TimeoutError:
  17.         await ctx.send("Timed out")
  18.                 return
  19.     if str(reaction) == '✔':
  20.         await ctx.send('some stuff')

答案3

得分: 1

这里的check的目的是，它是一个函数，当被调用时返回一个可以作为此wait_for的检查条件使用的函数。正确的使用方式是：

  1. def check(author):
  2.     def react_check(reaction, emoji):
  3.         return message.author == author and reaction.message.id == msg.id and reaction.emoji == emoji
  4.     return check
  6. await self.client.wait_for('reaction_add', check=check(author), timeout=60)
英文:

The purpose of check here is that it is a function that when called returns a function that can be used as a check for this wait_for. The correct way to use it is:

  1. def check(author):
  2.     def react_check(reaction, emoji):
  3.         return message.author == author and reaction.message.id==msg.id and reaction.emoji==emoji
  4.     return check
  6. await self.client.wait_for('reaction_add', check=check(author), timeout=60)

huangapple
  • 本文由 发表于 2020年1月3日 14:55:43
  • 转载请务必保留本文链接：https://go.coder-hub.com/59574376.html
  • discord
  • discord.py
  • python
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