docstr: update the data for online trading
docstr_tok: ["update","the","data","for","online","trading"]
code: def update(self):
      """update the data for online trading"""
  
imports: import pandas
  import numpy
  from copy import deepcopy
  from joblib import Parallel, delayed
  from typing import Dict, List, Union, Text, Tuple
  from qlib.data.dataset.utils import init_task_handler
  from qlib.data.dataset import DatasetH
  from qlib.contrib.torch import data_to_tensor
  from qlib.model.meta.task import MetaTask
  from qlib.model.meta.dataset import MetaTaskDataset
  from qlib.model.trainer import TrainerR
  from qlib.log import get_module_logger
  from qlib.utils import auto_filter_kwargs, get_date_by_shift, init_instance_by_config
  from qlib.utils.data import deepcopy_basic_type
  from qlib.workflow import R
  from qlib.workflow.task.gen import RollingGen, task_generator
  from qlib.workflow.task.utils import TimeAdjuster
  from tqdm.auto import tqdm
label_desc: Use image node_id 4 for calling the InternalData obj's underlying member method code with example usage: obj.update() without return types