code: def exp(a):
      """Takes the exponential of each blob element."""
      if not type(a) is Blob:
          raise ValueError("`a` should be neoml.Blob.")
  
      if a.size == 0:
          raise ValueError("The blob shouldn't be empty.")
  
      return Blob(PythonWrapper.blob_exp(a._internal))
  
imports: import neoml
  import neoml.PythonWrapper
  from neoml.MathEngine import MathEngine
  from neoml.Blob import Blob
  import numpy
label_desc: Use image node_id 13 for calling a global function with example usage: exp(a) and returns: Blob