Daemon manager (example)

Below is an example of a simple daemon manager, written with argumentor. The code itself does nothing, since its primary goal is to provide an example on how to use argumentor.

d-manager.py

#!/usr/bin/env python3

import sys
from argumentor import Argumentor, Flags
from argumentor.exc import ParsingError

argm = Argumentor("d-manager")

argm.add_command(
    "start",
    description="start daemon",
)
argm.add_command(
    "stop",
    description="stop daemon",
)
argm.add_command(
    "msg",
    description="send message to daemon",
    value_type=list,
)
argm.add_command(
    "reload",
    description="reload daemon",
)
argm.add_command(
    "--help",
    description="print this help page",
    hide=True,
)
argm.add_command_alias("-h", "--help")

argm.add_option(
    "--force",
    description="force operation",
)
argm.add_option_alias("-f", "--force")
argm.add_option(
    "--verbose",
    description="be more verbose",
)
argm.add_option_alias("-v", "--verbose")
argm.add_option(
    "--help",
    description="get contextual help",
    flags=Flags.SPECIAL,
)
argm.add_option_alias("-h", "--help")
argm.add_option(
    "--config",
    command="start",
    description="configuration file to use",
    value_type=str,
    default_value="/etc/d-manager.conf",
)
argm.add_option_alias(
    "-c",
    "--config",
    command="start",
)
argm.add_option(
    "--config",
    command="reload",
    description="configuration file to use",
    value_type=str,
    default_value="/etc/d-manager.conf",
)
argm.add_option_alias(
    "-c",
    "--config",
    command="reload",
)
argm.add_option(
    "--pidfile",
    command="start",
    description="custom PID file",
    value_type=str,
    default_value="/var/run/d-manager.pid",
)
argm.add_option_alias(
    "-p",
    "--pidfile",
    command="start",
)

try:
    cmd, opts = argm.parse()
except ParsingError as err:
    sys.stderr.write(str(err) + "\n")
    sys.exit(1)

if cmd.get("--help"):
    print(argm.get_help())
elif opts.get("--help"):
    single_command = list(cmd.keys())[0]
    print(
        argm.get_help(
            single_command=single_command, print_options_for_command=single_command
        )
    )
elif cmd.get("start"):
    print(
        f"starting daemon with config {opts.get('--config')} and PID file {opts.get('--pidfile')}"
    )
elif cmd.get("stop"):
    print("stopping daemon")
elif cmd.get("msg"):
    print(f"sending message(s) to daemon: {cmd.get('msg')}")
elif cmd.get("reload"):
    print(f"reloading daemon with config {opts.get('--config')}")
else:
    sys.stderr.write(
        "error: no command specified\nrun with --help to view available commands\n"
    )
    sys.exit(1)