class_docstr: A helper class to index into a parameter vector.
code: def __init__(self):
      self.idxs_and_shapes = {}
      self.N = 0
  
imports: from __future__ import absolute_import
  from __future__ import print_function
  from builtins import range
  import autograd.numpy
  import autograd.numpy.random
  import autograd.scipy.signal
  from autograd import grad
  import data_mnist
label_desc: Use image node_id 1 to create a new WeightsParser object from inherited base classes: object with example: obj = WeightsParser()