Blackkettle

Well, all I can say is that I hope I’m not treading on anyone else’s namespace with my little effort.

I finally got bored with rolling and re-rolling my own command line processors in Python, so I’ve knocked together a little something to make things simpler for myself.

It’s loosely based on the marvellously prolific Ara T. Howard’s main gem, but it doesn’t have nearly the feature set. Yet. I guess I’ve given myself something to aim for there.

Anyhow, here’s how to use it, nicked straight from the README:

import main
import sys

def callback(params):
  print "Called with " + params['foo'].value

m = main.mode("run", callback)
m.option("foo")
m.description="How not to be seen"
main.process(sys.argv)

Called as:

$ python b.py

Outputs:

Usage:
  # How not to be seen
        b.py run --foo=<foo>

Called as:

$ python b.py run --foo=bar

Outputs:

Called with bar

There’s lots left to do (decent error handling, for instance – it makes a modicum of effort, but largely you can expect mistakes to blow up in your face), but it’s a start.

This entry was posted on Wednesday, January 27th, 2010 at 12:56 am and is filed under Ruby. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.