code: def run_file_or_script (script=None, file_name='script_from_command_line',
                          argv=None, params=None, **kwargs):
      
      runner= Ayrton (**kwargs)
  
      if params is None:
          params= ExecParams ()
  
      if script is None:
          v= runner.run_file (file_name, argv, params)
      else:
          if not isinstance(script, bytes):
              # the problem here it's that the parser expects the source as bytes
              # so we must encode the source before passing it
              script = script.encode()
          v= runner.run_script (script, file_name, argv, params)
  
      return v
docs: Main entry point for bin/ayrton and unittests.