Python 实现在for循环中查找非类型的方法？

尝试将非类型从该for循环中拉出时遇到问题，这样我就不会因为此错误而使我的bot崩溃：

Ignoring exception in command rank:
Traceback (most recent call last):
  File "E:\Programing\discordbot\lib\site-packages\discord\ext\commands\core.py", line 85, in wrapped
    ret = await coro(*args, **kwargs)
  File "D:\Life\discordbot\main.py", line 232, in rank
    await ranking_menu.start(ctx)
  File "E:\Programing\discordbot\lib\site-packages\discord\ext\menus\__init__.py", line 967, in start
    await super().start(ctx, channel=channel, wait=wait)
  File "E:\Programing\discordbot\lib\site-packages\discord\ext\menus\__init__.py", line 707, in start
    self.message = msg = await self.send_initial_message(ctx, channel)
  File "E:\Programing\discordbot\lib\site-packages\discord\ext\menus\__init__.py", line 962, in send_initial_message
    kwargs = await self._get_kwargs_from_page(page)
  File "E:\Programing\discordbot\lib\site-packages\discord\ext\menus\__init__.py", line 939, in _get_kwargs_from_page
    value = await discord.utils.maybe_coroutine(self._source.format_page, self, page)
  File "E:\Programing\discordbot\lib\site-packages\discord\utils.py", line 343, in maybe_coroutine
    return await value
  File "D:\Life\discordbot\main.py", line 207, in format_page
    table = ("\n".join(f'{idx + 1}. {self.ctx.bot.get_user(entry[0]).name} (XP: {entry[1]} | Level: {entry[2]} \n'
  File "D:\Life\discordbot\main.py", line 207, in <genexpr>
    table = ("\n".join(f'{idx + 1}. {self.ctx.bot.get_user(entry[0]).name} (XP: {entry[1]} | Level: {entry[2]} \n'
AttributeError: 'NoneType' object has no attribute 'name'

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "E:\Programing\discordbot\lib\site-packages\discord\ext\commands\bot.py", line 939, in invoke
    await ctx.command.invoke(ctx)
  File "E:\Programing\discordbot\lib\site-packages\discord\ext\commands\core.py", line 863, in invoke
    await injected(*ctx.args, **ctx.kwargs)
  File "E:\Programing\discordbot\lib\site-packages\discord\ext\commands\core.py", line 94, in wrapped
    raise CommandInvokeError(exc) from exc
discord.ext.commands.errors.CommandInvokeError: Command raised an exception: AttributeError: 'NoneType' object has no attribute 'name'

再次感谢各位

如果需要，这里是它的一部分的类！条目来自数据库中返回的行数

class LocalXpMenu(ListPageSource):
    def __init__(self, ctx, data):
        self.ctx = ctx
        super().__init__(data, per_page = 10)

    async def write_page(self, menu, fields=[]):
         offset = (menu.current_page * self.per_page) + 1
         len_data = len(self.entries)

         embed = Embed(title="Server XP Leaderboard",
                       colour=self.ctx.author.colour)
         embed.set_thumbnail(url = self.ctx.guild.icon_url)
         embed.set_footer(text = f"{offset:,} - {min(len_data, offset+self.per_page-1):,} of {len_data:,} members.")

         for name, value in fields:
             embed.add_field(name=name, value=value, inline=False)
         return embed

    async def format_page(self, menu, entries):
        fields = []

        table = ("\n".join(f'{idx + 1}. {self.ctx.bot.get_user(entry[0]).name} (XP: {entry[1]} | Level: {entry[2]} \n'
                for idx, entry in enumerate(entries)))

        fields.append(("Ranks", table))

        return await self.write_page(menu, fields)

---

为类循环添加条件

-

table=（“\n”.join（f'{idx+1}.{self.ctx.bot.get_user（entry[0]）.name}（XP:{entry[1]}Level:{entry[2]}\n'对于idx，如果（entry和（len（entry）>=3）），则枚举（entries）中的条目）
您可以先筛选以仅选择非无条目

mapped_entries=map（lambda条目：条目+self.ctx.bot.get_用户（条目[0]），条目）
过滤的\u条目=过滤器（lambda条目：条目[3]！=无，映射的\u条目）
table=（“\n”.join（f'{idx+1}.{entry[3].name}（XP:{entry[1]}| Level:{entry[2]}\n'对于idx，枚举中的条目（筛选的条目）））

请注意，本例中的
idx
将排除
None
get\u user
结果的条目。如果要排除这些条目，则必须在
mapped\u条目中包含索引，并使用它们。
如果
get\u user（条目），程序应该做什么
是否没有？跳过？是的，很抱歉花了这么长时间才回复您，我忙了一天我尝试了这个，但似乎还是遇到了同样的错误，所以我不确定到底是怎么回事
class LocalXpMenu(ListPageSource):
    def __init__(self, ctx, data):
        self.ctx = ctx
        super().__init__(data, per_page = 10)

    async def write_page(self, menu, fields=[]):
         offset = (menu.current_page * self.per_page) + 1
         len_data = len(self.entries)

         embed = Embed(title="Server XP Leaderboard",
                       colour=self.ctx.author.colour)
         embed.set_thumbnail(url = self.ctx.guild.icon_url)
         embed.set_footer(text = f"{offset:,} - {min(len_data, offset+self.per_page-1):,} of {len_data:,} members.")

         for name, value in fields:
             embed.add_field(name=name, value=value, inline=False)
         return embed

    async def format_page(self, menu, entries):
        fields = []

        table = ("\n".join(f'{idx + 1}. {self.ctx.bot.get_user(entry[0]).name} (XP: {entry[1]} | Level: {entry[2]} \n'
                for idx, entry in enumerate(entries)))

        fields.append(("Ranks", table))

        return await self.write_page(menu, fields)