code: def _date_to_date_number(year, month, day):
      return (year << 9) | (month << 5) | day
  
file_path: tensorflow/tensorflow/python/compat/compat.py
imports: import datetime
  import os
  from tensorflow.python.platform import tf_logging
  from tensorflow.python.util import tf_contextlib
  from tensorflow.python.util.tf_export import tf_export
label_desc: Use image node_id 1 for calling a global function with example usage: _date_to_date_number(year, month, day) and returns: unknown