code: def load(saver, session, ckpt_dir, ckpt_name="best"):
      """Load model from a checkpoint."""
      ckpt_path = os.path.join(ckpt_dir, ckpt_name)
      logging.info(
          "[*] Loading checkpoints from {}...".format(ckpt_path)
      )
      try:
          saver.restore(session, ckpt_path)
      except Exception as exception:
          logging.info(exception)
          logging.info("check ckpt file path !!!")
          raise exception
  
file_path: delta/delta/utils/model.py
imports: import os
  import numpy
  import hurry.filesize
  from absl import logging
  import delta.compat
  from tensorflow.python.framework import graph_util
label_desc: Use image node_id 4 for calling a global function with example usage: load(saver, session, ckpt_dir, ckpt_name) without return types