code: def test_get_memory():
      """Test get_memory utility."""
      data = torch.rand(100, 100, dtype=torch.float64)
      assert dc.utils.pytorch_utils.get_memory(data) == 100 * 100 * 8
  
file_path: deepchem/deepchem/utils/test/test_pytorch_utils.py
imports: import deepchem
  import numpy
  import pytest
label_desc: Use image node_id 4 for calling a global function with example usage: test_get_memory() without return types