def die_with_usage(self, msg=None, exit_code=2):
        if msg != None:
            print >> sys.stderr, msg
        self.print_help(sys.stderr)
        sys.exit(exit_code)
Display a usage message and exit.
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/grizzled/grizzled/cmdline.py/CommandLineParser.die_with_usage