#!/usr/bin/env python

def main(argv=None):
    if argv is None:
        import sys
        argv = sys.argv

    from optparse import OptionParser

    parser = OptionParser("%prog")
    opts, args = parser.parse_args(argv[1:])
    if args:
        parser.error("wrong number of arguments") # Will exit

    print "Hello GIST"

if __name__ == "__main__":
    main()