code: def loads(str):
      file = StringIO(str)
      unpickler = pickle.Unpickler(file)
      unpickler.dispatch[pickle.GLOBAL] = mapped_load_global
      return unpickler.load()
  
file_path: shogun/examples/undocumented/python/structure_dynprog.py
imports: from shogun import *
  import numpy
  from numpy import array, Inf, float64, matrix, frompyfunc, zeros
  import gzip
  import scipy
  from scipy.io import loadmat
  import pickle
label_desc: Use image node_id 4 for calling a global function with example usage: loads(str) and returns: unpickler