discord.py预警系统

Question

所以我在看这个question，我不能让代码工作，我会在最初的问题帖子上推一个评论，但是我没有足够的代表

我很抱歉，如果我不知道自己在做什么，我从来没有和警告一起工作过。

当我使用warn命令时，所遇到的错误是：

Ignoring exception in command warn:
Traceback (most recent call last):
  File "/home/runner/dnunus-5/venv/lib/python3.8/site-packages/discord/ext/commands/core.py", line 85, in wrapped
    ret = await coro(*args, **kwargs)
  File "main.py", line 123, in warn
    save_warn(ctx, member)
  File "main.py", line 99, in save_warn
    warns[str(member.id)] += 1
KeyError: '472100676407656448'

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

Traceback (most recent call last):
  File "/home/runner/dnunus-5/venv/lib/python3.8/site-packages/discord/ext/commands/bot.py", line 939, in invoke
    await ctx.command.invoke(ctx)
  File "/home/runner/dnunus-5/venv/lib/python3.8/site-packages/discord/ext/commands/core.py", line 863, in invoke
    await injected(*ctx.args, **ctx.kwargs)
  File "/home/runner/dnunus-5/venv/lib/python3.8/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: KeyError: '472100676407656448'

def save_warn(ctx, member: discord.Member):
    with open('warns.json', 'r') as f:
         warns = json.load(f)

         warns[str(member.id)] += 1

    with open('warns.json', 'w') as f:
         json.dump(warns, f)

def remove_warn(ctx, member: discord.Member, amount: int):
    with open('warns.json', 'r') as f:
         warns = json.load(f)

         warns[str(member.id)] -= amount

    with open('warns.json', 'w') as f:
         json.dump(warns, f)
    
def warns_check(member: discord.Member):
    with open('warns.json', 'r') as f:
         warns = json.load(f)

         warns[str(member.id)]
    return warns

@bot.command()
@commands.has_permissions(kick_members=True)
async def warn(ctx, member: discord.Member, *, reason):
      save_warn(ctx, member)
      dm = await bot.fetch_user(member.id)
      em=discord.Embed(title="Warning", description=f"Server: {ctx.guild.id}\nReason: {reason}")
      await dm.send(embed=em)

@bot.command()
@commands.has_permissions(kick_members=True)
async def warnings(ctx, member: discord.Member):
      warns = warns_check(member)
      await ctx.send(f"{member.name} has {warns} warnings.")

@bot.command()
@commands.has_permissions(kick_members=True)
async def rmwarn(ctx, member: discord.Member, amount: int):
      remove_warn(ctx, member, amount)
      await ctx.send(f"Removed {amount} warnings from {member.name}!")

Answer 1

在尝试访问密钥之前，需要确保密钥的存在。

一种方法是，如果成员还不知道，则将警告计数设置为0。

该代码的warns_check也被破坏了。

def save_warn(ctx, member: discord.Member):
    with open('warns.json', 'r') as f:
         warns = json.load(f)
         # if `str(member.id)` isn't in `warns`, then return 0
         warns[str(member.id)] = warns.get(str(member.id), 0) + 1
    with open('warns.json', 'w') as f:
         json.dump(warns, f)

def remove_warn(ctx, member: discord.Member, amount: int):
    with open('warns.json', 'r') as f:
         warns = json.load(f)
         warns[str(member.id)] = warns.get(str(member.id), 0) - amount
    with open('warns.json', 'w') as f:
         json.dump(warns, f)
    
def warns_check(member: discord.Member):
    with open('warns.json', 'r') as f:
         warns = json.load(f)
         return warns.get(str(member.id), 0)

请注意，每次需要读取输入时打开和关闭文件并不是最佳做法。最好只加载一次输入，然后定期保存，如下所示：

@tasks.loop(minutes=1.0)
async def autosave():
    with open(...) as f:
        json.dump(warns, f)
autosave()

with open(...) as f:
    warns = json.load(f)