Discord Python 更改区域

Question

对不起，如果这是一个如此愚蠢的问题，但我想知道这个命令有什么问题，因为我收到 discord.ext.commands.errors.BadArgument: Converting to "EnumMeta" failed. 作为错误。错误究竟是什么意思，正确的命令是什么？

@commands.command(pass_context = True)
@commands.has_permissions(manage_server=True)
async def region(self, ctx, region=discord.ServerRegion):
    """Changes the server region."""
    if not region:
        await self.bot.say("What region are we changing to, {ctx.message.author.mention}?")
    await self.bot.edit_server(region)
    await self.bot.say("Ok! We're now in " + str(ctx.message.server.region) + " :smiley:")
    print('ok')

Answer 1

ServerRegion 没有内置转换器。幸运的是，我们可以利用ServerRegion('amsterdam') 等同于ServerRegion.amsterdam 的事实来相当容易地完成工作：

region_converter = lambda region: discord.ServerRegion('-'.join(region.lower().split()))

@commands.command(pass_context = True)
@commands.has_permissions(manage_server=True)
async def region(self, ctx, *, region: region_converter=None):
    """Changes the server region."""
    if not region:
        await self.bot.say("What region are we changing to, {ctx.message.author.mention}?")
        return
    await self.bot.edit_server(ctx.message.server, region=region)
    await self.bot.say("Ok! We're now in " + str(ctx.message.server.region) + " :smiley:")
    print('ok')