Leverage dpnp.ndindex on numpy class

Author: antonwolfy

dpnp/dpnp_iface_indexing.py

@@ -64,6 +64,7 @@
     "indices",
     "ix_",
     "mask_indices",
+    "ndindex",
     "nonzero",
     "place",
     "put",
@@ -1057,6 +1058,57 @@ def mask_indices(
     return nonzero(a != 0)
 
 
+# pylint: disable=invalid-name
+ndindex = numpy.ndindex
+ndindex.__doc__ = """
+An N-dimensional iterator object to index arrays.
+
+Given the shape of an array, an `ndindex` instance iterates over the
+N-dimensional index of the array. At each iteration a tuple of indices is
+returned, the last dimension is iterated over first.
+
+For full documentation refer to :obj:`numpy.ndindex`.
+
+Parameters
+----------
+shape : ints, or a single tuple of ints
+    The size of each dimension of the array can be passed as individual
+    parameters or as the elements of a tuple.
+
+See Also
+--------
+:obj:`dpnp.ndenumerate` : Multidimensional index iterator.
+:obj:`dpnp.flatiter` : Flat iterator object to iterate over arrays.
+
+Examples
+--------
+>>> import dpnp as np
+
+Dimensions as individual arguments
+
+>>> for index in np.ndindex(3, 2, 1):
+...     print(index)
+(0, 0, 0)
+(0, 1, 0)
+(1, 0, 0)
+(1, 1, 0)
+(2, 0, 0)
+(2, 1, 0)
+
+Same dimensions - but in a tuple ``(3, 2, 1)``
+
+>>> for index in np.ndindex((3, 2, 1)):
+...     print(index)
+(0, 0, 0)
+(0, 1, 0)
+(1, 0, 0)
+(1, 1, 0)
+(2, 0, 0)
+(2, 1, 0)
+
+"""
+
+
 def nonzero(a):
     """
     Return the indices of the elements that are non-zero.