code: def __init__(self, shape, batch, z_dim):
      self.shape = shape
      self.batch = batch
      self.zdim = z_dim
  
imports: import argparse
  import glob
  import numpy
  import os
  import tensorflow
  from tensorpack import *
  from tensorpack.tfutils.scope_utils import auto_reuse_variable_scope
  from tensorpack.utils.viz import stack_patches
  from GAN import GANModelDesc, GANTrainer, RandomZData
label_desc: Use image node_id 1 to create a new Model object from inherited base classes: GANModelDesc with example: obj = Model(shape, batch, z_dim)