docstr: use dataset to get highreq data
docstr_tok: ["use","dataset","to","get","highreq","data"]
code: def get_data(self):
      """use dataset to get highreq data"""
      self._init_qlib()
      self._prepare_calender_cache()
  
      dataset = init_instance_by_config(self.task["dataset"])
      xtrain, xtest = dataset.prepare(["train", "test"])
      print(xtrain, xtest)
  
      dataset_backtest = init_instance_by_config(
          self.task["dataset_backtest"]
      )
      backtest_train, backtest_test = dataset_backtest.prepare(
          ["train", "test"]
      )
      print(backtest_train, backtest_test)
  
      return
  
file_path: qlib/examples/highfreq/workflow.py
imports: import fire
  import qlib
  import pickle
  from qlib.constant import REG_CN
  from qlib.config import HIGH_FREQ_CONFIG
  from qlib.utils import init_instance_by_config
  from qlib.data.dataset.handler import DataHandlerLP
  from qlib.data.ops import Operators
  from qlib.data.data import Cal
  from qlib.tests.data import GetData
  from highfreq_ops import get_calendar_day, DayLast, FFillNan, BFillNan, Date, Select, IsNull, Cut
label_desc: Use image node_id 3 for calling the HighfreqWorkflow obj's underlying member method code with example usage: obj.get_data() without return types