code: def lrelu(x, leak=0.2):
      f1 = 0.5 * (1 + leak)
      f2 = 0.5 * (1 - leak)
      return f1 * x + f2 * abs(x)
  
imports: import numpy
  import tensorflow
  import copy
  import os
  import functools
  import collections
  import multiprocessing
label_desc: Use image node_id 2 for calling a global function with example usage: lrelu(x, leak) and returns: unknown