code: def run_validate_program_main(self, program_main):
          
          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)
docs: Validate the program main file exists.
  
          Args:
              program_main (str): The executable name.