code: def __init__(self):
      self.data201 = read_json(gt201)
  
imports: import os
  import random
  from src.common.constant import Config
  from src.tools.io_tools import read_json, write_json
  from src.query_api.singleton import Singleton
  from src.tools.io_tools import read_pickle
  from src.tools.compute import generate_global_rank
label_desc: Use image node_id 2 to create a new Gt201 object  with example: obj = Gt201()