def create_arg_parser(parent):
    """Create command subparsers.

    Parameters
    ----------
    parent : `argparse.ArgumentParser`
        Command parser.
    """

    arg1 = parent.add_subparsers(dest='command')

    arg2 = arg1.add_parser('create')
    arg2.add_argument('-P', '--progress',
                      action='store_true',
                      help='show progress bar')
    arg2.add_argument('-s', '--settings',
                      type=FileType('r'), default=None,
                      help='settings json file')
    arg2.add_argument('-o', '--output',
                      default=None,
                      help='output file (default: stdout)')
    arg2.add_argument('input', nargs='*',
                      help='input file (default: stdin)')

    arg2 = arg1.add_parser('update')
    arg2.add_argument('-P', '--progress',
                      action='store_true',
                      help='show progress bar')
    arg2.add_argument('-s', '--settings',
                      type=FileType('r'), default=None,
                      help='settings json file')
    arg2.add_argument('-o', '--output',
                      default=None,
                      help='output file (default: rewrite state file)')
    arg2.add_argument('state',
                      help='state file')
    arg2.add_argument('input', nargs='*',
                      help='input file (default: stdin)')

    arg2 = arg1.add_parser('settings')
    arg2.add_argument('state',
                      help='state file')

    arg2 = arg1.add_parser('generate')
    arg2.add_argument('-P', '--progress',
                      action='store_true',
                      help='show progress bar')
    arg2.add_argument('-nf', '--no-format',
                      dest='format',
                      action='store_false',
                      help='do not format text')
    arg2.add_argument('-s', '--settings',
                      type=FileType('r'), default=None,
                      help='settings json file')
    arg2.add_argument('-ss', '--state-size',
                      type=int, default=None,
                      help='generator state size')
    arg2.add_argument('-S', '--start',
                      default=None,
                      help='text start')
    arg2.add_argument('-E', '--end',
                      default=None,
                      help='text end')
    arg2.add_argument('-R', '--reply',
                      default=None,
                      help='reply to text')
    arg2.add_argument('-w', '--words',
                      type=int, default=256,
                      help='max text size (default: %(default)s)')
    arg2.add_argument('-c', '--count',
                      type=int, default=1,
                      help='number of generated texts (default: %(default)s)')
    arg2.add_argument('-o', '--output',
                      type=FileType('w'), default=None,
                      help='output file (default: stdout)')
    arg2.add_argument('state',
                      help='state file')

    arg2.set_defaults(format=True)
def create_arg_parser ( parent ) : arg1 = parent . add_subparsers ( dest = 'command' ) arg2 = arg1 . add_parser ( 'create' ) arg2 . add_argument ( '-P' , '--progress' , action = 'store_true' , help = 'show progress bar' ) arg2 . add_argument ( '-s' , '--settings' , type = FileType ( 'r' ) , default = None , help = 'settings json file' ) arg2 . add_argument ( '-o' , '--output' , default = None , help = 'output file (default: stdout)' ) arg2 . add_argument ( 'input' , nargs = '*' , help = 'input file (default: stdin)' ) arg2 = arg1 . add_parser ( 'update' ) arg2 . add_argument ( '-P' , '--progress' , action = 'store_true' , help = 'show progress bar' ) arg2 . add_argument ( '-s' , '--settings' , type = FileType ( 'r' ) , default = None , help = 'settings json file' ) arg2 . add_argument ( '-o' , '--output' , default = None , help = 'output file (default: rewrite state file)' ) arg2 . add_argument ( 'state' , help = 'state file' ) arg2 . add_argument ( 'input' , nargs = '*' , help = 'input file (default: stdin)' ) arg2 = arg1 . add_parser ( 'settings' ) arg2 . add_argument ( 'state' , help = 'state file' ) arg2 = arg1 . add_parser ( 'generate' ) arg2 . add_argument ( '-P' , '--progress' , action = 'store_true' , help = 'show progress bar' ) arg2 . add_argument ( '-nf' , '--no-format' , dest = 'format' , action = 'store_false' , help = 'do not format text' ) arg2 . add_argument ( '-s' , '--settings' , type = FileType ( 'r' ) , default = None , help = 'settings json file' ) arg2 . add_argument ( '-ss' , '--state-size' , type = int , default = None , help = 'generator state size' ) arg2 . add_argument ( '-S' , '--start' , default = None , help = 'text start' ) arg2 . add_argument ( '-E' , '--end' , default = None , help = 'text end' ) arg2 . add_argument ( '-R' , '--reply' , default = None , help = 'reply to text' ) arg2 . add_argument ( '-w' , '--words' , type = int , default = 256 , help = 'max text size (default: %(default)s)' ) arg2 . add_argument ( '-c' , '--count' , type = int , default = 1 , help = 'number of generated texts (default: %(default)s)' ) arg2 . add_argument ( '-o' , '--output' , type = FileType ( 'w' ) , default = None , help = 'output file (default: stdout)' ) arg2 . add_argument ( 'state' , help = 'state file' ) arg2 . set_defaults ( format = True )
Create command subparsers.

    Parameters
    ----------
    parent : `argparse.ArgumentParser`
        Command parser.