code: def mul_one_simplify(expr):
      return identity_simplify(expr, "#Mul", 1)
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import numpy
  import tensorflow
label_desc: Use image node_id 18 for calling a global function with example usage: mul_one_simplify(expr) and returns: identity_simplify