code: def execute_from_command_line(argv=None):
      
      if sys.stdout.encoding is None:
          print('please set python env PYTHONIOENCODING=UTF-8, example: '
                'export PYTHONIOENCODING=UTF-8, when writing to stdout',
                file=sys.stderr)
          exit(1)
  
      command = Command(argv)
      command.execute()
docs: A simple method that runs a Command.