如何让一个人只做一张票（discord.py）

Question

我使用 discord.py 我想确保如果一个人制作了一张票，他/她不能再制作一张我怎样才能制作这些代码

@bot.event()

async def on_raw_reaction_add(payload):

    if payload.member.id != bot.user.id and str(payload.emoji) == u"\U0001F3AB":
        msg_id, channel_id, category_id = bot.ticket_configs[payload.guild_id]
        if payload.message_id == msg_id:
            guild = bot.get_guild(payload.guild_id)

            for category in guild.categories:
                if category.id == category_id:
                    break

            channel = guild.get_channel(channel_id)

            ticket_num = 1 if len(category.channels) == 0 else int(category.channels[-1].name.split("-")[-1]) + 1
            ticket_channel = await category.create_text_channel(f"{ticket_num}", topic=f" {ticket_num}.", permission_synced=True)

            await ticket_channel.set_permissions(payload.member, read_messages=True, send_messages=True)

            message = await channel.fetch_message(msg_id)
            await message.remove_reaction(payload.emoji, payload.member)

            allowed_mentions = discord.AllowedMentions(everyone=True)
            await ticket_channel.send(content="@everyone", allowed_mentions=allowed_mentions)

            try:
                await bot.wait_for("message", check=lambda m: m.channel == ticket_channel and m.content == "close", timeout=3600)

            except asyncio.TimeoutError:
                await ticket_channel.delete()

            else:
                await ticket_channel.delete()


@bot.command()
@commands.has_permissions(manage_channels=True)
async def ticket_configs(ctx, msg: discord.Message=None, category: discord.CategoryChannel=None):
    if msg is None or category is None:
        await ctx.channel.send('')
        return

    bot.ticket_configs[ctx.guild.id] = [msg.id, msg.channel.id, category.id]

    async with aiofiles.open("ticket_configs.txt", mode="r") as file:
        data = await file.readlines()

    async with aiofiles.open("ticket_configs.txt", mode="w") as file:
        for line in data:
            if int(line.split(" ")[0]) != ctx.guild.id:
                await file.write(line)

            else:
                await file.write(f"{ctx.guild.id} {msg.id} {msg.channel.id} {category.id}\n")

    await msg.add_reaction(u"\U0001F3AB")
    await ctx.channel.send('')