default as boolean False and help as a string "Don't break long message lines into several lines.". call the method parser.add_argument with 5 arguments: string '--no-location', action set to string 'store_true',
parser . add_argument ( '--no-location' , action = 'store_true' , dest = 'no_location' , default = False , help = "Don't write '#: filename:line' lines." )