code: def test_does_not_divide_by_zero_with_no_count(self, device: str):
      accuracy = CategoricalAccuracy()
      assert accuracy.get_metric() == pytest.approx(0.0)
  
imports: import pytest
  import torch
  from torch.testing import assert_allclose
  from allennlp.common.checks import ConfigurationError
  from allennlp.common.testing import AllenNlpTestCase, multi_device, global_distributed_metric, run_distributed_test
  from allennlp.training.metrics import CategoricalAccuracy
label_desc: Use image node_id 10 for calling the CategoricalAccuracyTest obj's underlying member method code with example usage: obj.test_does_not_divide_by_zero_with_no_count(device) without return types