BUG: Removes ValueError for empty kwargs in arraymultiter_new

closes gh-13455

2 files changed, 13 insertions, 1 deletions

diff --git a/numpy/core/src/multiarray/iterators.c b/numpy/core/src/multiarray/iterators.c
index 9fcdc91b2..73c15b099 100644
--- a/numpy/core/src/multiarray/iterators.c
+++ b/numpy/core/src/multiarray/iterators.c
@@ -1388,7 +1388,7 @@ arraymultiter_new(PyTypeObject *NPY_UNUSED(subtype), PyObject *args, PyObject *k
     PyArrayMultiIterObject *multi;
     PyObject *arr;
 
-    if (kwds != NULL) {
+    if (kwds != NULL && PyDict_Size(kwds) > 0) {
         PyErr_SetString(PyExc_ValueError,
                         "keyword arguments not accepted.");
         return NULL;
diff --git a/numpy/core/tests/test_numeric.py b/numpy/core/tests/test_numeric.py
index 1c53f9372..406110fa7 100644
--- a/numpy/core/tests/test_numeric.py
+++ b/numpy/core/tests/test_numeric.py
@@ -2766,6 +2766,18 @@ class TestBroadcast(object):
                 mit = np.broadcast(*arrs)
                 assert_equal(mit.numiter, j)
 
+    def test_broadcast_error_kwargs(self):
+        #gh-13455
+        arrs = [np.empty((5, 6, 7))]
+        mit  = np.broadcast(*arrs)
+        mit2 = np.broadcast(*arrs, **{})
+        assert_equal(mit.shape, mit2.shape)
+        assert_equal(mit.ndim, mit2.ndim)
+        assert_equal(mit.nd, mit2.nd)
+        assert_equal(mit.numiter, mit2.numiter)
+        assert_(mit.iters[0].base is mit2.iters[0].base)
+
+        assert_raises(ValueError, np.broadcast, 1, **{'x': 1})
 
 class TestKeepdims(object):