code: def get_dummy_data():
      return np.random.randn(300, 480)
  
file_path: BigDL/python/chronos/example/tcmf/run_electricity.py
imports: import argparse
  from bigdl.orca import init_orca_context, stop_orca_context
  import numpy
  from bigdl.chronos.forecaster.tcmf_forecaster import TCMFForecaster
  import tempfile
  import logging
  import sys
  import os
label_desc: Use image node_id 1 for calling a global function with example usage: get_dummy_data() and returns: np