Add k type check to triu_indices

CHANGELOG.md

@@ -57,6 +57,7 @@ Also, that release drops support for Python 3.9, making Python 3.10 the minimum
 * Updated QR tests to avoid element-wise comparisons for `raw` and `r` modes [#2785](https://github.com/IntelPython/dpnp/pull/2785)
 * Moved all SYCL kernel functors from `backend/extensions/` to a unified `backend/kernels/` directory hierarchy [#2816](https://github.com/IntelPython/dpnp/pull/2816)
 * `dpnp` uses pybind11 3.0.3 [#2834](https://github.com/IntelPython/dpnp/pull/2834)
+* Added explicit type check of `k` keyword in `dpnp.triu_indices` [#2855](https://github.com/IntelPython/dpnp/pull/2855)
 
 ### Deprecated
 

dpnp/dpnp_iface_arraycreation.py

@@ -3680,8 +3680,7 @@ def tri(
     try:
         _k = operator.index(k)
     except TypeError:
-        pass
-    if _k is None:
+        # pylint: disable=raise-missing-from
         raise TypeError(f"`k` must be a integer data type, but got {type(k)}")
 
     sycl_dev = dpnp.get_normalized_queue_device(

dpnp/dpnp_iface_indexing.py

@@ -2621,6 +2621,12 @@ def triu_indices(
 
     """
 
+    try:
+        k = operator.index(k)
+    except TypeError:
+        # pylint: disable=raise-missing-from
+        raise TypeError(f"`k` must be a integer data type, but got {type(k)}")
+
     tri_ = ~dpnp.tri(
         n,
         m,

dpnp/tests/test_indexing.py

@@ -1172,6 +1172,14 @@ def test_triu_indices(n, k, m):
     assert_array_equal(expected, result)
 
 
+@pytest.mark.parametrize("k", [3.2, dpnp.bool(0), numpy.array(3.14)])
+def test_triu_indices_error(k):
+    with pytest.raises(
+        TypeError, match="`k` must be a integer data type, but got"
+    ):
+        dpnp.triu_indices(n=4, k=k)
+
+
 @pytest.mark.parametrize("k", [-3, -2, -1, 0, 1, 2, 3])
 @pytest.mark.parametrize(
     "array",