docstr: initialize qlib
docstr_tok: ["initialize","qlib"]
code: def _init_qlib(self):
      """initialize qlib"""
      # use cn_data_1min data
      QLIB_INIT_CONFIG = {**HIGH_FREQ_CONFIG, **self.SPEC_CONF}
      provider_uri = QLIB_INIT_CONFIG.get("provider_uri")
      GetData().qlib_data(
          target_dir=provider_uri,
          interval="1min",
          region=REG_CN,
          exists_skip=True,
      )
      qlib.init(**QLIB_INIT_CONFIG)
  
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 1 for calling the HighfreqWorkflow obj's underlying member method code with example usage: obj._init_qlib() without return types