class_docstr: A raw input example consisting of segments of text,
  a label for classification task or a target sequence of generation task.
  Other desired information can be passed via meta.
  
  Args:
      guid (:obj:`str`, optional): A unique identifier of the example.
      text_a (:obj:`str`, optional): The placeholder for sequence of text.
      text_b (:obj:`str`, optional): A secend sequence of text, which is not always necessary.
      label (:obj:`int`, optional): The label id of the example in classification task.
      tgt_text (:obj:`Union[str,List[str]]`, optional):  The target sequence of the example in a generation task..
      meta (:obj:`Dict`, optional): An optional dictionary to store arbitrary extra information for the example.
class_docstr_tok: ["A","raw","input","example","consisting","of","segments","of","text",",","a","label","for","classification","task","or","a","target","sequence","of","generation","task",".","Other","desired","information","can","be","passed","via","meta",".","Args",":","guid","(",":","obj",":","`","str","`",",","optional",")",":","A","unique","identifier","of","the","example",".","text_a","(",":","obj",":","`","str","`",",","optional",")",":","The","placeholder","for","sequence","of","text",".","text_b","(",":","obj",":","`","str","`",",","optional",")",":","A","secend","sequence","of","text",",","which","is","not","always","necessary",".","label","(",":","obj",":","`","int","`",",","optional",")",":","The","label","id","of","the","example","in","classification","task",".","tgt_text","(",":","obj",":","`","Union","[","str",",","List","[","str","]","]","`",",","optional",")",":","The","target","sequence","of","the","example","in","a","generation","task","..","meta","(",":","obj",":","`","Dict","`",",","optional",")",":","An","optional","dictionary","to","store","arbitrary","extra","information","for","the","example","."]
code: def __repr__(self):
      return str(self.to_json_string())
  
imports: import copy
  import json
  import pickle
  from typing import *
  import paddle
label_desc: Use image node_id 2 for calling the InputExample obj's underlying member method code with example usage: obj.__repr__() and returns: str