Python 'guild' 无法转换为 MySQL 类型

Question

我正在尝试为我的 discord.py 机器人创建一个欢迎系统，该系统必须是特定于服务器的。但是，当我尝试输入公会 ID 时，它会引发此错误。我对 MySQL 还很陌生，因此我们将不胜感激。

错误：

Traceback (most recent call last):
  File "C:\Users\user-pc\AppData\Local\Programs\Python\Python39\lib\site-packages\discord\ext\commands\bot.py", line 994, in invoke
    await ctx.command.invoke(ctx)
  File "C:\Users\user-pc\AppData\Local\Programs\Python\Python39\lib\site-packages\discord\ext\commands\core.py", line 1448, in invoke
    await ctx.invoked_subcommand.invoke(ctx)
  File "C:\Users\user-pc\AppData\Local\Programs\Python\Python39\lib\site-packages\discord\ext\commands\core.py", line 894, in invoke
    await injected(*ctx.args, **ctx.kwargs)
  File "C:\Users\user-pc\AppData\Local\Programs\Python\Python39\lib\site-packages\discord\ext\commands\core.py", line 176, in wrapped
    raise CommandInvokeError(exc) from exc
discord.ext.commands.errors.CommandInvokeError: Command raised an exception: ProgrammingError: Failed processing format-parameters; Python 'guild' cannot be converted to a MySQL type

这是我的代码：

    @welcome.command()
    @has_permissions(administrator=True)
      async def channel(self, ctx, channel:discord.TextChannel):
      cursor.execute(f'SELECT channel_id FROM welcome WHERE guild_id = {ctx.guild.id}')
      result = cursor.fetchone()
      if result is None:
        cursor.execute('INSERT INTO welcome (guild_id, channel_i) VALUES (%s,%s)', (ctx.guild, channel.id))
        #values = (ctx.guild, channel.id)
        db.commit()
        #values = (ctx.guild.id, channel.id)
        await ctx.send(f'Welcome channel has been set to {channel.mention}')
      elif result is not None:
        cursor.execute('UPDATE welcome SET channel_id = %s WHERE guild_id = %s', (channel.id, ctx.guild))
        db.commit()
        #values = (channel.id, ctx.guild.id)
        await ctx.send(f'Welcome channel has been updated to {channel.mention}')
      cursor.close()
      db.close()

Answer 1

sql 需要一个 id (guild_id)，因此您的代码应该使用 ctx.guild.id 而不是 ctx.guild（在哪里使用），因为 ctx.guild 是一个没有 MySQL 模拟的 Python 对象。