code: def image_captioner(image):
      if "image" not in image:
          raise ValueError(f"`image` ({image}) is not an image.")
      return f"This is a description of {image}."
  
imports: from .agents import BASE_PYTHON_TOOLS, clean_code_for_chat, clean_code_for_run
  from .python_interpreter import InterpretorError, evaluate
label_desc: Use image node_id 6 for calling a global function with example usage: image_captioner(image) and returns: str, image, str