parser = argparse.ArgumentParser(description='tesh -- testing shell', add_help=True)
group1 = parser.add_argument_group('Options')
group1.add_argument('teshfile', nargs='?', help='Name of teshfile, stdin if omitted')
parser = argparse.ArgumentParser(description='tesh -- testing shell', add_help=True)
group1 = parser.add_argument_group('Options')
group1.add_argument('teshfile', nargs='?', help='Name of teshfile, stdin if omitted')