code: def BNLReLU(x, name=None):
      x = BatchNorm("bn", x)
      return tf.nn.leaky_relu(x, alpha=0.2, name=name)
  
imports: import argparse
  import functools
  import glob
  import numpy
  import os
  import cv2
  import tensorflow
  from tensorpack import *
  from tensorpack.tfutils.scope_utils import auto_reuse_variable_scope
  from tensorpack.tfutils.summary import add_moving_summary
  from tensorpack.utils.gpu import get_num_gpu
  from tensorpack.utils.viz import stack_patches
  from GAN import GANModelDesc, GANTrainer
label_desc: Use image node_id 1 for calling a global function with example usage: BNLReLU(x, name) and returns: tf