===========
Subcommands
===========
Arguably parses the command tree based on ``__`` delimited function names.

.. code-block:: python

   import arguably


   @arguably.command
   def ec2__start_instances(*instances):
       """Start instances.

       Args:
           *instances: {instance}s to start
       """
       for inst in instances:
           print(f"Starting {inst}")


   @arguably.command
   def ec2__stop_instances(*instances):
       """Stop instances.

       Args:
           *instances: {instance}s to stop
       """
       for inst in instances:
           print(f"Stopping {inst}")


   if __name__ == "__main__":
       arguably.run()

.. code-block:: console

   $ python main.py ec2 --help
   positional arguments:
      command
        start-instances  start instances.
        stop-instances   stop instances.

Cyclopts handles the command tree by creating and registering recursive :class:`App <cyclopts.App>` objects:

.. code-block:: python

   from cyclopts import App

   app = App()
   ec2 = app.command(App(name="ec2"))


   @ec2.command
   def start_instances(*instances):
       """Start instances.

       Args:
           *instances: {instance}s to start
       """
       for inst in instances:
           print(f"Starting {inst}")


   @ec2.command
   def stop_instances(*instances):
       """Stop instances.

       Args:
           *instances: {instance}s to stop
       """
       for inst in instances:
           print(f"Stopping {inst}")


   if __name__ == "__main__":
       app()

.. code-block:: console

   $ python main.py ec2 --help
   ╭─ Commands ───────────────────────────────────────────────────────────╮
   │ start-instances  start instances.                                    │
   │ stop-instances   stop instances.                                     │
   ╰──────────────────────────────────────────────────────────────────────╯
