default set to DEFAULT_DB_ALIAS and help as a string 'Nominates a specific database to load fixtures into. Defaults to the "default" database.' call the method parser.add_argument with 5 arguments: string '--app', action as a string 'store', dest as a string 'app_label',
parser . add_argument ( '--app' , action = 'store' , dest = 'app_label' , default = None , help = 'Only look for fixtures in the specified app.' )