code: def _is_weekend(weekday):
      return (weekday >= 5).values.astype(np.int64)
  
file_path: BigDL/python/chronos/src/bigdl/chronos/data/utils/feature.py
imports: import pandas
  import numpy
  from packaging import version
label_desc: Use image node_id 3 for calling a global function with example usage: _is_weekend(weekday) and returns: unknown