print(money(float(sys argv[ ])int(sys argv[ ]))this file works identically in python and when run directlyit tests itself as beforebut it uses options on the command line to control the test behavior run this file directly with no command-line arguments on your own to see what its self-test code prints--it' too extensive to list in full herec:\codepython formats py , , , , , etc to test specific stringspass them in on the command line along with minimum field widththe script' __main__ code passes them on to its money functionwhich in turn runs commasc:\codepython formats py $ , , :\codepython formats py - $- , , :\codepython formats py $ , , , , :\codepython formats py - - , , , , :\codepython formats py $ :\codepython formats py - $- as beforebecause this code is instrumented for dual-mode usagewe can also import its tools normally to reuse them as library components in scriptsmodulesand the interactive promptfrom formats import moneycommas money( '$ money(- '- , , '% (% )(commas( ) ' , , , , , , ( )you can use command-line arguments in ways similar to this example to provide general inputs to scripts that may also package their code as functions and classes for reuse by importers for more advanced command-line processingsee "python commandexampledual mode code