nl: default set to DEFAULT_DB_ALIAS, help containing string 'Nominates a database to synchronize. Defaults to the "default" database.' as arguments. call the method parser.add_argument with string '--fake', action containing string 'store_true', dest set to string 'fake',
code: parser . add_argument ( '--fake' , action = 'store_true' , dest = 'fake' , default = False , help = 'Mark migrations as run without actually running them' )