class_docstr: Base class to implement a new Prompt.
  
  Inheritors have to override `template` property.
code: def validate(self, output: str) -> bool:
      return isinstance(output, str)
  
file_path: pandas-ai/pandasai/prompts/base.py
imports: from abc import ABC, abstractmethod
  import string
label_desc: Use image node_id 12 for calling the AbstractPrompt obj's underlying member method code with example usage: obj.validate(output) and returns: isinstance