make nGraph ut py3 compatible (#21679)

python/paddle/fluid/tests/unittests/ngraph/test_scale_ngraph_op.py

@@ -11,9 +11,11 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+
 from __future__ import print_function
-import unittest
-from paddle.fluid.tests.unittests.test_scale_op import TestScaleOp, TestScaleOpSelectedRows
+import unittest, sys
+sys.path.append("../")
+from test_scale_op import TestScaleOp, TestScaleOpSelectedRows
 
 if __name__ == "__main__":
     unittest.main()

python/paddle/fluid/tests/unittests/ngraph/test_softmax_ngraph_op.py

@@ -13,8 +13,9 @@
 # limitations under the License.
 
 from __future__ import print_function
-import unittest
-from paddle.fluid.tests.unittests.test_softmax_op import TestSoftmaxOp, TestSoftmaxOp2, TestSoftmaxOp3, TestSoftmaxOp4, TestSoftmaxOp5
+import unittest, sys
+sys.path.append("../")
+from test_softmax_op import TestSoftmaxOp, TestSoftmaxOp2, TestSoftmaxOp3, TestSoftmaxOp4, TestSoftmaxOp5
 
 if __name__ == "__main__":
     unittest.main()

python/paddle/fluid/tests/unittests/ngraph/test_softmax_with_cross_entropy_ngraph_op.py

@@ -13,8 +13,9 @@
 # limitations under the License.
 
 from __future__ import print_function
-import unittest
-from paddle.fluid.tests.unittests.test_softmax_with_cross_entropy_op import TestSoftmaxWithCrossEntropyOp, TestSoftmaxWithCrossEntropyOp2, TestSoftmaxWithCrossEntropyOp3
+import unittest, sys
+sys.path.append("../")
+from test_softmax_with_cross_entropy_op import TestSoftmaxWithCrossEntropyOp, TestSoftmaxWithCrossEntropyOp2, TestSoftmaxWithCrossEntropyOp3
 
 if __name__ == "__main__":
     unittest.main()

python/paddle/fluid/tests/unittests/ngraph/test_sum_ngraph_op.py

@@ -11,9 +11,11 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+
 from __future__ import print_function
-import unittest
-from paddle.fluid.tests.unittests.test_sum_op import TestSumOp, TestSelectedRowsSumOp, TestLoDTensorAndSelectedRowsOp
+import unittest, sys
+sys.path.append("../")
+from test_sum_op import TestSumOp, TestSelectedRowsSumOp, TestLoDTensorAndSelectedRowsOp
 
 if __name__ == "__main__":
     unittest.main()

python/paddle/fluid/tests/unittests/ngraph/test_top_k_ngraph_op.py

@@ -13,8 +13,9 @@
 # limitations under the License.
 from __future__ import print_function
 
-import unittest
-from paddle.fluid.tests.unittests.test_top_k_op import TestTopkOp, TestTopkOp3d, TestTopkOp2, TestTopkOp3, TestTopkOp4
+import unittest, sys
+sys.path.append("../")
+from test_top_k_op import TestTopkOp, TestTopkOp3d, TestTopkOp2, TestTopkOp3, TestTopkOp4
 
 if __name__ == "__main__":
     unittest.main()