python argparse with dependencies

Question

I\'m writing a script which has 2 arguments which are mutually exclusive, and an option that only makes sense with one of those arguments. I\'m trying to set up argparse to fail

Answer 1

Add the usage argument when creating the parser:

usage = "usage: whichboom [-h] [-s | [-h] [-s]] host"
description = "Lookup servers by ip address from host file"
parser = argparse.ArgumentParser(description=description, usage=usage)

Source: http://docs.python.org/dev/library/argparse.html#usage