plac 0.5 is out!

[Andre Alexander Bell]

On 06/20/2010 11:22 AM, Michele Simionato wrote:
> A few weeks ago I presented on this list my most recent effort, plac.
> Now there is a *huge* new release:
> the size of plac and of its documentation doubled.
> [...]
>
>   http://micheles.googlecode.com/hg/plac/doc/plac.html

I've read this one...

>   http://micheles.googlecode.com/hg/plac/doc/plac_ext.html

But this one is broken. :(

How about hierarchical composition. I've seen several scripts following
the format

basescript command [options] subcommands [other optiones] ...

It would be great if one can compose functions to form the commands.
Instead of

def main(command, opt1, opt2):
    """..."""
    if command == 'cmd1':
        ...
    elif command == 'cmd2':
        ...

if __name__=='__main__':
    import plac
    plac.call(main)

one could then write

def cmd1(opt1):
    """..."""
    ...

def cmd2(opt2):
    """..."""
    ...

if __name__=='__main__':
    import plac
    plac.call(plac.commands(cmd1, cmd2))

This should then produce usage info like this

$ basescript --help
usage: basescript [-h] command

...

commands:
  cmd1
  cmd2

$ basescript cmd1 --help
usage basescript cmd1 [cmd1 specific options]
...

$ basescript cmd2 --help
usage basescript cmd2 [cmd2 specific options]
...

Maybe one could even extend to subcommands and so on.
Maybe this is already possible but just not covered by the first link
I've read by now.
Anyway, I very much like this package and it seems like I have a new
friend at my disposal.

Thanks and best regards


Andre