code: def load_graph(filename):
      """Unpersists graph from file as default graph."""
      with tf.io.gfile.GFile(filename, "rb") as f:
          graph_def = tf.compat.v1.GraphDef()
          graph_def.ParseFromString(f.read())
          tf.import_graph_def(graph_def, name="")
  
file_path: tensorflow-upstream/tensorflow/examples/speech_commands/label_wav.py
imports: import argparse
  import sys
  import tensorflow
label_desc: Use image node_id 1 for calling a global function with example usage: load_graph(filename) without return types