[Python-ideas] Options parsing in the Tornado Web Server

I remember seeing a bit of discussion about improving Python's default options parsing... Tornado's seems very impressive [1]:

from tornado.options import define, options

define("port", default=8888, help="run on the given port", type=int)

print options.port

What does everyone think?

- Andrey 1. http://github.com/facebook/tornado/blob/9a8bd2fb6fd6279be16d6f0a2e57e49fe1b9...