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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def run_validate_program_main(self, program_main):
 """Validate the program main file exists. Args: program_main (str):
 The executable name. """

        program_language = self.profile.get('install_json').get('programLanguage', 'python').lower()
        if program_language == 'python' and not os.path.isfile('{}.py'.format(program_main)):
            print(
                '{}{}Could not find program main file ({}).'.format(
                    c.Style.BRIGHT, c.Fore.RED, program_main
                )
            )
            sys.exit(1)