如何使用discord bot自动删除频道

我正在为discord制作python机器人。它根据播放器的指示创建一个删除频道。 我想创建一个测试所有服务器的垃圾收集器。频道并删除过期的频道。

我会:

async def waitTimer():
    while True:
        await asyncio.sleep(10)

        regex = re.compile(r"[0-9]*_[a-z0-9]*-[0-9]*") #nom des channels de raid

        for cCurrent in client.get_all_channels():
            if regex.match(cCurrent.name):
                numRaid = int(cCurrent.name[0])
                cRaidCurrent = cRaids[numRaid]
                date = datetime.datetime.now()
                print (cRaidCurrent.raid.fin.timestamp())
                print (date.timestamp())
                if cRaidCurrent.raid.fin < date:
                    if cRaidCurrent.retirerRaid():
                        cId = cRaidCurrent.com.id
                        await removeFromListe(cRaidCurrent)
                        await client.delete_channel(client.get_channel(cId))
                        cCurrent = 0

有时它会通过,有时我会出现以下错误:

    for cCurrent in client.get_all_channels():
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/discord/client.py", line 581,
 in get_all_channels
    for channel in server.channels:
RuntimeError: dictionary changed size during iteration

如果我明白了 client.get_all_channels 是一个字典,我无法在迭代过程中删除通道。。。所以问题是,我还有什么其他可能删除这些频道?