def main(argv):
    try:
        opts, args = getopt.getopt(argv, "hf:")
    except getopt.GetoptError, error:
        print error
        usage()
        sys.exit()

    for o, a in opts:
        if o in ('-f'):
            coordinate = a
        if o in ('-h'):
            usage()
            sys.exit()
    
    print coordinate