code: def is_spmat_eq(a, b):
      return (a != b).nnz == 0
  
file_path: dgl/examples/pytorch/hilander/utils/misc.py
imports: import json
  import os
  import pickle
  import random
  import time
  import numpy
label_desc: Use image node_id 4 for calling a global function with example usage: is_spmat_eq(a, b) and returns: unknown