code: def simple_response_str(command, status, status_text, content=""):
      
      response = Element('%s_response' % command)
      for name, value in [('status', str(status)), ('status_text', status_text)]:
          response.set(name, str(value))
      if isinstance(content, list):
          for elem in content:
              response.append(elem)
      elif isinstance(content, Element):
          response.append(content)
      else:
          response.text = content
      return tostring(response)
docs: Creates an OSP response XML string.
  
      Arguments:
          command (str): OSP Command to respond to.
          status (int): Status of the response.
          status_text (str): Status text of the response.
          content (str): Text part of the response XML element.
  
      Return:
          String of response in xml format.