code: def power_op_simplify(expr):
      op_power = _power_ops.get(expr[0], None)
      if op_power:
          return ("#CPow%.4e" % op_power,) + expr[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 8 for calling a global function with example usage: power_op_simplify(expr) and returns: unknown