discord.py 无法附加到 json 文件

Question

我一直在尝试创建一个命令，将用户 ID、选择和响应添加到 json 字典，但我意识到 json.dump 不是正确使用的函数，因为它只用新的替换了 {} 中的内容值，如何将值添加到 {} 中的新行而不是替换它？当我尝试“追加”这些值时，我也遇到了错误，但我不确定这是不是因为用户 ID 是一个 int，我尝试将用户 ID 转换为字符串，但我得到了同样的错误

    async def on_submit(self, interaction: discord.Interaction):
        with open("reports.json", "r") as f:
                data = json.load(f)
        if self.answer.value.lower() == "report" or self.answer.value.lower() == "suggestion":
            await interaction.response.send_message("Successfully submitted your report/suggestion.", ephemeral=True)
            print(f"{interaction.user} sent a {self.answer}: {self.answer2}")
            user = data["user"] = str(interaction.user.id)
            choice = data["choice"] = self.answer.value.lower()
            message = data["message"] = f"{self.answer2.value}\n"
            
            with open("reports.json", "w") as f:
                user.append(interaction.user.id)
                choice.append(self.answer.value.lower())
                message.append(self.answer2.value)

顺便说一句，我收到这个错误

Traceback (most recent call last):
  File "/home/container/.local/lib/python3.9/site-packages/discord/ui/modal.py", line 186, in _scheduled_task
    await self.on_submit(interaction)
  File "/home/container/main.py", line 312, in on_submit
    user.append(interaction.user.id)
AttributeError: 'str' object has no attribute 'append'

Answer 1

我假设你想要一个报告列表（JSON 应该是根目录下的对象/字典，但可以调整为在根目录下有数组/列表）：

{
    "reports": [
        {
            "user": "user_a",
            "choice": "selected value",
            "message": "some message"
        },
        {
            "user": "user_b",
            "choice": "other value",
            "message": "another message"
        },
        ...
    ]
}

从您的数据中为列表创建一个新条目，将其添加到结果列表中，最后以 JSON 格式保存到文件中。

import json


async def on_submit(self, interaction: discord.Interaction):
    with open("reports.json", "r") as f:
        data = json.load(f)
    
    if self.answer.value.lower() == "report" or self.answer.value.lower() == "suggestion":
        await interaction.response.send_message("Successfully submitted your report/suggestion.", ephemeral=True)
        print(f"{interaction.user} sent a {self.answer}: {self.answer2}")
        
        new_result = {
            "user": str(interaction.user.id),
            "choice": self.answer.value.lower(),
            "message":  f"{self.answer2.value}
"
        }
        data["results"].append(new_result)
        
        with open("reports.json", "w") as f:
            json.dump(data, f)