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/9a8bd2fb6fd6279be16d6f0a2e57e49fe1b98f8f/demos/chat/chatdemo.py