class_docstr: Prints summary statistics of all tf variables.
class_docstr_tok: ["Prints","summary","statistics","of","all","tf","variables","."]
code: def __init__(self):
      super(ProganDebugHook, self).__init__()
      self._fetches = list(tf.global_variables())
  
imports: import os
  import time
  from absl import logging
  from magenta.models.gansynth.lib import networks
  import numpy
  import tensorflow.compat.v1
  import tensorflow_gan
label_desc: Use image node_id 1 to create a new ProganDebugHook object from inherited base classes: tf.train with example: obj = ProganDebugHook()