if __name__ == "__main__"
// Every Python module has it’s __name__ defined
// and if this is ‘__main__’,
// it implies that the module is being run
// standalone by the user and we can do corresponding
// appropriate actions.
// If you import this script as a module
// in another script,
// the __name__ is set to the name
// of the script/module.
// Python files can act as either reusable modules,
// or as standalone programs.
// if __name__ == “main”: is used to execute some
// code only if the file was run directly,
// and not imported.