code: def test_zero_div():
      loss = Loss(nll_loss)
      with pytest.raises(
          NotComputableError,
          match=r"Loss must have at least one example before it can be computed",
      ):
          loss.compute()
  
imports: import os
  from unittest.mock import MagicMock
  import pytest
  import torch
  from numpy.testing import assert_almost_equal
  from torch import nn
  from torch.nn.functional import nll_loss
  import ignite.distributed
  from ignite.engine import State
  from ignite.exceptions import NotComputableError
  from ignite.metrics import Loss, Precision
label_desc: Use image node_id 6 for calling a global function with example usage: test_zero_div() without return types