This is an alternative to XuaTheGrate/Flag-Parsing, which is not maintained.

⚠ Please be sure to read the entire README, it explains some important tricks.

Flag Parsing

A util for discord.py bots that allow passing flags into commands.

To install, run the following command:

pip install alt-discord-flags

2.1.0 changes how signatures appear. If you wish to use the legacy signatures, use command.old_signature instead.

Basic example usage:

import discord
from discord.ext import flags, commands

bot = commands.Bot("!")

# Invocation: !flags --count=5 --string "hello world" --user Xua --thing y

@flags.add_flag("--count", type=int, default=10)
@flags.add_flag("--string", default="hello!")
@flags.add_flag("--user", type=discord.User)
@flags.add_flag("--thing", type=bool)
@flags.command()
async def flags(ctx, **flags):
    await ctx.send("--count={count!r}, --string={string!r}, --user={user!r}, --thing={thing!r}".format(**flags))
bot.add_command(flags)

Important note that @flags.command MUST be under all @flags.add_flag decorators.

@flags.add_flag takes the same arguments as argparse.ArgumentParser.add_argument to keep things simple.

Subcommands are just as simple:

@commands.group()
async def my_group(ctx):
    ...

@flags.add_flag("-n")
@my_group.command(cls=flags.FlagCommand)
async def my_subcommand(ctx, **flags):
    ...

Usage of discord.py's consume rest behaviour is not perfect with discord-flags, meaning that you have to use a flag workaround:

@flags.add_flag("message", nargs="+")
@flags.command()
async def my_command(ctx, arg1, **options):
    """ You can now access `message` via `options['message']` """
    message = ' '.join(options['message'])