code: def BNLReLU(x, name=None):
      x = BatchNorm("bn", x)
      return tf.nn.leaky_relu(x, alpha=0.2, name=name)
  
file_path: tensorpack/examples/GAN/DiscoGAN-CelebA.py
imports: import argparse
  import numpy
  import os
  import tensorflow
  from tensorpack import *
  from tensorpack.tfutils.scope_utils import auto_reuse_variable_scope
  from tensorpack.tfutils.summary import add_moving_summary
  from GAN import GANModelDesc, SeparateGANTrainer
label_desc: Use image node_id 1 for calling a global function with example usage: BNLReLU(x, name) and returns: tf