How to exclude one argument from argparser

Question

Can I define all except one argument for one the option in python?

I want to shutdown all hosts in lab except one host. For argparser I have given -h ^server1 which should be pick all hosts from host list except server1.

Answer 1

Something simple. Remove any hosts from the list that start with ^. Call some sort of shutdown function for each host name in the revised list.

hostlist = [x for x in hostlist if not x.startswith('^')]
map(shutdownhost, hostlist)