#!/usr/bin/python2.7
import sys
import argparse

parser = argparse.ArgumentParser( description='demostrate a weak help message',
                                  formatter_class=argparse.ArgumentDefaultsHelpFormatter )
parser.add_argument( '-H','--hammer', action='store_const', const='hammer', dest='tool', default='wrench',
                     help='use a hammer' )
parser.add_argument( '-s','--screwdriver', action='store_const', const='screwdriver', dest='tool',
                     help="use a screwdriver" )
parser.add_argument( '--foo', help="foo bar" )
parser.add_argument( '-w','--wrench', action='store_const', const='wrench', dest='tool',
                     help="use a wrench" )
parser.add_argument( '-T','--tnt', action='store_const', const='TNT', dest='tool',
                         help="just blow the whole thing up" )
args = parser.parse_args( sys.argv [1:] )