功能已在Discord bot上定义错误

Question

通过添加新命令从第一个Discord bot构建。在创建第二个命令时，我在代码中得到错误“函数已定义”，即使它位于不同的标题下。

@client.command()
async def on_message(message):
    if message.author == client.user:
        return

    if message.content.startswith('!hello'):
        msg = 'Hello {0.author.mention}'.format(message)
        await client.send_message(message.channel, msg)

My first command above, worked fine.

@client.command()
async def on_message(message):
    if message.author == client.user:
        return

    if message.content.startswith('!roll'):
        msg = 'So, {0.author.mention} you rolled for a {}'.format(random.randint(1,20))
        await client.send_message(message.channel, msg)

第二个有一个错误，说先前已在第10行定义了异步（在第一个函数中）

Answer 1

通过使用def，您正在定义一个函数。函数必须是唯一的，并且不能使用相同的名称定义两次。

解决方案可以

@client.command()
async def on_message(message):
    if message.author == client.user:
        return

    if message.content.startswith('!hello'):
        msg = 'Hello {0.author.mention}'.format(message)
        await client.send_message(message.channel, msg)
    elif message.content.startswith('!roll'):
        msg = 'So, {0.author.mention} you rolled for a {}'.format(random.randint(1,20))
        await client.send_message(message.channel, msg)