code: def get_sublist_from_indices(orig_list, idxs):
      """Returns a sublist from the indices. orig_list can be anthing that can be
      indexed and idxs are a list of indices."""
      return [orig_list[idx] for idx in idxs]
  
imports: from __future__ import print_function
  from __future__ import division
  import numpy
  from scipy.sparse import dok_matrix
  from scipy.linalg import solve_triangular
label_desc: Use image node_id 3 for calling a global function with example usage: get_sublist_from_indices(orig_list, idxs) and returns: unknown