Discord.Py 上的 KeyError

Question

@client.command(description="Pauses the current playing track. Can be resumed with `!resume`.", 
brief="Pauses current track.",aliases=['PAUSE'])
async def pause(ctx):
    guild_id = ctx.message.guild.id
    players[guild_id].pause()

@client.command(description="Resumes the current playing track. Can only be used if current track has 
been paused.",
    brief="Resumes current track.",
    aliases=['RESUME','continue','CONTINUE'])
async def resume(ctx):
    guild_id = ctx.message.guild.id
    players[guild_id].resume()

@client.command(description="Stops the current playing track.",
     brief="Stops current track.",
     aliases=['STOP'])
async def stop(ctx):
    guild_id = ctx.message.guild.id
    players[guild_id].stop()

当我尝试使用暂停、停止和恢复命令时，它给了我 KeyError。 触发该错误的整个代码都在那里。 错误是这样的：

忽略命令停止中的异常：Traceback（最近一次调用最后一次）：文件“C:\Users\emirs\PycharmProjects\discordmasterbot\venv\lib\site-packages\discord\ext\commands\core.py”，第 83 行，在Wrapped ret = await coro(*args, **kwargs) 文件“C:/Users/emirs/PycharmProjects/discordmasterbot/MASTERBOT.py”，第 163 行，停止播放器[guild_id].stop() KeyError: 708748879079932016

还有另一种类型的错误：

回溯（最近一次调用）：文件“C:\Users\emirs\PycharmProjects\discordmasterbot\venv\lib\site-packages\discord\ext\commands\bot.py”，第 892 行，调用 await ctx.command。调用（ctx）文件“C:\Users\emirs\PycharmProjects\discordmasterbot\venv\lib\site-packages\discord\ext\commands\core.py”，第 797 行，调用等待注入（*ctx.args，* *ctx.kwargs) 文件“C:\Users\emirs\PycharmProjects\discordmasterbot\venv\lib\site-packages\discord\ext\commands\core.py”，第 92 行，来自 exc discord 的封装 raise CommandInvokeError(exc) .ext.commands.errors.CommandInvokeError：命令引发异常：KeyError：708748879079932016

Answer 1

KeyError 表示未找到此 object 的密钥。 在这种情况下，公会 ID 708748879079932016在players中不存在。

尝试在此处添加一个 try/except 块来捕获其中的任何一个。

@client.command(description="Pauses the current playing track. Can be resumed with `!resume`.", 
brief="Pauses current track.",aliases=['PAUSE'])
async def pause(ctx):
    try:
        guild_id = ctx.message.guild.id
        players[guild_id].pause()
    except KeyError:
        # do something that adds the guild ID to players #

@client.command(description="Resumes the current playing track. Can only be used if current track has 
been paused.",
    brief="Resumes current track.",
    aliases=['RESUME','continue','CONTINUE'])
async def resume(ctx):
    try:
        guild_id = ctx.message.guild.id
        players[guild_id].resume()
    except KeyError:
        # do something that adds the guild ID to players #

@client.command(description="Stops the current playing track.",
     brief="Stops current track.",
     aliases=['STOP'])
async def stop(ctx):
    try:
        guild_id = ctx.message.guild.id
        players[guild_id].stop()
    except KeyError:
        # do something that adds the guild ID to players #