code: def check_close(a, b):
      assert np.allclose(a.asnumpy(), b.asnumpy(), rtol=1e-4, atol=1e-4)
  
imports: import backend
  import dgl
  import dgl.function
  import dgl.nn.mxnet
  import mxnet
  import networkx
  import numpy
  import pytest
  import scipy
  from mxnet import autograd, gluon, nd
  from utils import parametrize_idtype
  from utils.graph_cases import get_cases, random_bipartite, random_dglgraph, random_graph
label_desc: Use image node_id 1 for calling a global function with example usage: check_close(a, b) without return types