fix UT when np >= 1.23 (#51466)

* fix UT when np >= 1.24

* optimize decription of this change

python/paddle/fluid/tests/unittests/test_var_base.py

@@ -952,9 +952,22 @@ def _test_list_index(self):
         array = np.arange(120).reshape([6, 5, 4])
         x = paddle.to_tensor(array)
         py_idx = [[0, 2, 0, 1, 3], [0, 0, 1, 2, 0]]
+
+        # note(chenjianye):
+        # Non-tuple sequence for multidimensional indexing is supported in numpy < 1.23.
+        # For List case, the outermost `[]` will be treated as tuple `()` in version less than 1.23,
+        # which is used to wrap index elements for multiple axes.
+        # And from 1.23, this will be treat as a whole and only works on one axis.
+        #
+        # e.g. x[[[0],[1]]] == x[([0],[1])] == x[[0],[1]] (in version < 1.23)
+        #      x[[[0],[1]]] == x[array([[0],[1]])] (in version >= 1.23)
+        #
+        # Here, we just modify the code to remove the impact of numpy version changes,
+        # changing x[[[0],[1]]] to x[tuple([[0],[1]])] == x[([0],[1])] == x[[0],[1]].
+        # Whether the paddle behavior in this case will change is still up for debate.
         idx = [paddle.to_tensor(py_idx[0]), paddle.to_tensor(py_idx[1])]
-        np.testing.assert_array_equal(x[idx].numpy(), array[py_idx])
-        np.testing.assert_array_equal(x[py_idx].numpy(), array[py_idx])
+        np.testing.assert_array_equal(x[idx].numpy(), array[tuple(py_idx)])
+        np.testing.assert_array_equal(x[py_idx].numpy(), array[tuple(py_idx)])
         # case2:
         tensor_x = paddle.to_tensor(
             np.zeros(12).reshape(2, 6).astype(np.float32)

python/paddle/fluid/tests/unittests/test_variable.py

@@ -596,6 +596,19 @@ def test_slice(self):
 
 
 class TestListIndex(unittest.TestCase):
+    # note(chenjianye):
+    # Non-tuple sequence for multidimensional indexing is supported in numpy < 1.23.
+    # For List case, the outermost `[]` will be treated as tuple `()` in version less than 1.23,
+    # which is used to wrap index elements for multiple axes.
+    # And from 1.23, this will be treat as a whole and only works on one axis.
+    #
+    # e.g. x[[[0],[1]]] == x[([0],[1])] == x[[0],[1]] (in version < 1.23)
+    #      x[[[0],[1]]] == x[array([[0],[1]])] (in version >= 1.23)
+    #
+    # Here, we just modify the code to remove the impact of numpy version changes,
+    # changing x[[[0],[1]]] to x[tuple([[0],[1]])] == x[([0],[1])] == x[[0],[1]].
+    # Whether the paddle behavior in this case will change is still up for debate.
+
     def setUp(self):
         np.random.seed(2022)
 
@@ -637,7 +650,7 @@ def test_static_graph_list_index(self):
                 exe.run(paddle.static.default_startup_program())
                 fetch_list = [y.name]
 
-                getitem_np = array[index_mod]
+                getitem_np = array[tuple(index_mod)]
                 getitem_pp = exe.run(
                     prog, feed={x.name: array}, fetch_list=fetch_list
                 )
@@ -659,7 +672,7 @@ def test_dygraph_list_index(self):
             pt = paddle.to_tensor(array)
             index_mod = (index % (array.shape[-1])).tolist()
             try:
-                getitem_np = array[index_mod]
+                getitem_np = array[tuple(index_mod)]
 
             except:
                 with self.assertRaises(ValueError):
@@ -844,8 +857,12 @@ def run_setitem_list_index(self, array, index, value_np):
         exe.run(paddle.static.default_startup_program())
         fetch_list = [y.name]
         array2 = array.copy()
-
         try:
+            index = (
+                tuple(index)
+                if isinstance(index, list) and isinstance(index[0], list)
+                else index
+            )
             array2[index] = value_np
         except:
             with self.assertRaises(ValueError):