Python Discord.py如何获取忽略参数的命令

所以我想发出一个命令，可以回复.invests或.invests@user

当我以.invests的形式运行这个命令时，我的错误处理程序会启动并说我需要一个@user

我试图删除我的错误处理程序，但命令没有执行任何操作

如何使此命令双向工作

@commands.command()
    async def invites(self, ctx, user: discord.Member):
        global last1
        global invites1
        try:
            userinvitecount = 0
            gld = self.bot.get_guild(int(guild_id))
            while True:
                invs = await gld.invites()
                tmp = []
                for i in invs:
                    if user.id == i.inviter.id:
                        top = i.uses
                        userinvitecount += int(top)

                    tmp.append(tuple((i.inviter.id, i.code, i.uses)))
                invites1 = tmp
                break
            usr = gld.get_member(int(user.id))
            eme = discord.Embed(description=f"{usr.mention} has {userinvitecount} invite's", color=0x03d692, title=" ")
            await ctx.send(embed=eme)
        except commands.MissingRequiredArgument:
            user = ctx.message.author.id
            userinvitecount = 0
            gld = self.bot.get_guild(int(guild_id))
            while True:
                invs = await gld.invites()
                tmp = []
                for i in invs:
                    if user.id == i.inviter.id:
                        top = i.uses
                        userinvitecount += int(top)

                    tmp.append(tuple((i.inviter.id, i.code, i.uses)))
                invites1 = tmp
                break
            usr = gld.get_member(int(user.id))
            eme = discord.Embed(description=f"{usr.mention} has {userinvitecount} invite's", color=0x03d692, title=" ")
            await ctx.send(embed=eme)

---

您可以通过使用默认值来实现这一点。
在命令中，您只需检查用户是否为None

可以使用默认值，例如将用户设置为

None

，如下所示

@commands.command（）
异步def邀请（self、ctx、user:discord.Member=None）：

``@commands.command（）异步def邀请（self，ctx，user:discord.Member=None）：如果user为None:user=ctx.message.author``工作得很好谢谢

if isinstance(error, commands.MissingRequiredArgument):
        # generic error handler for commands entered wrong
        embed = discord.Embed(
            title="Failed",
            description="Failed to use command properly \n Please try again.",
            colour=discord.Colour.blurple(),
        )
        await ctx.send(embed=embed)