[Cherry-Pick] [2.0-beta] error enhancement (#24169)

Author: chenjiaoAngel

python/paddle/fluid/layers/nn.py

@@ -12553,6 +12553,11 @@ def get_tensor_from_selected_rows(x, name=None):
             out = fluid.layers.get_tensor_from_selected_rows(input)
     """
 
+    check_type(x, 'x', Variable, 'get_tensor_from_selected_rows')
+    if x.type != core.VarDesc.VarType.SELECTED_ROWS:
+        raise TypeError(
+            "The type of 'x' in get_tensor_from_selected_rows must be SELECTED_ROWS."
+        )
     helper = LayerHelper('get_tensor_from_selected_rows', **locals())
     out = helper.create_variable_for_type_inference(dtype=x.dtype)
     helper.append_op(

python/paddle/fluid/layers/tensor.py

@@ -461,6 +461,11 @@ def tensor_array_to_tensor(input, axis=1, name=None, use_stack=False):
             numpy.array(list(map(lambda x: int(x.shape[axis]), input))))
         return res, sizes
 
+    check_type(input, 'input', (list, Variable), 'tensor_array_to_tensor')
+    if isinstance(input, list):
+        for i, input_x in enumerate(input):
+            check_type(input_x, 'input[' + str(i) + ']', Variable,
+                       'tensor_array_to_tensor')
     helper = LayerHelper('tensor_array_to_tensor', **locals())
     out = helper.create_variable_for_type_inference(dtype=helper.input_dtype())
     out_index = helper.create_variable_for_type_inference(dtype="int32")

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

@@ -17,7 +17,28 @@
 import unittest
 import paddle.fluid.core as core
 import numpy as np
+import paddle.fluid as fluid
 from paddle.fluid.op import Operator
+from paddle.fluid import Program, program_guard
+
+
+class TestGetTensorFromSelectedRowsError(unittest.TestCase):
+    """get_tensor_from_selected_rows error message enhance"""
+
+    def test_errors(self):
+        with program_guard(Program()):
+            x_var = fluid.data('X', [2, 3])
+            x_data = np.random.random((2, 4)).astype("float32")
+
+            def test_Variable():
+                fluid.layers.get_tensor_from_selected_rows(x=x_data)
+
+            self.assertRaises(TypeError, test_Variable)
+
+            def test_SELECTED_ROWS():
+                fluid.layers.get_tensor_from_selected_rows(x=x_var)
+
+            self.assertRaises(TypeError, test_SELECTED_ROWS)
 
 
 class TestGetTensorFromSelectedRows(unittest.TestCase):

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

@@ -20,6 +20,25 @@
 import paddle.fluid.core as core
 from paddle.fluid.op import Operator
 from paddle.fluid.executor import Executor
+from paddle.fluid import Program, program_guard
+
+
+class TestTensorArrayToTensorError(unittest.TestCase):
+    """Tensor_array_to_tensor error message enhance"""
+
+    def test_errors(self):
+        with program_guard(Program()):
+            input_data = numpy.random.random((2, 4)).astype("float32")
+
+            def test_Variable():
+                fluid.layers.tensor_array_to_tensor(input=input_data)
+
+            self.assertRaises(TypeError, test_Variable)
+
+            def test_list_Variable():
+                fluid.layers.tensor_array_to_tensor(input=[input_data])
+
+            self.assertRaises(TypeError, test_list_Variable)
 
 
 class TestLoDTensorArrayConcat(unittest.TestCase):