title: how to access index of the test in pytest.parametrize
body: <p>These decorators make 6 tests:</p>
  
  <pre><code>@pytest.mark.parametrize("x", [0, 1])
  @pytest.mark.parametrize("y", [2, 3])
  @pytest.mark.parametrize("z", [4, 5])
  </code></pre>
  
  <p>How inspect pytest to get current index or some ID of the test, inside the test body?</p>