refine code

paddle/framework/feed_fetch_method.h

@@ -37,9 +37,9 @@ void SetFeedVariable(const LoDTensor& input, const std::string& var_name,
 }
 
 LoDTensor& GetFetchVariable(const std::string& var_name, size_t index) {
-  // If var_name Variable is not found in GlobalScope, a new variable will
-  // be created.
-  Variable* g_fetch_value = GetGlobalScope().Var(var_name);
+  // Since we want to fetch LodTensor from a variable, the variable must
+  // be created alreadly.
+  Variable* g_fetch_value = GetGlobalScope().FindVar(var_name);
   auto& fetch_outputs =
       *(g_fetch_value->GetMutable<std::vector<paddle::framework::LoDTensor>>());
   PADDLE_ENFORCE_LT(index, fetch_outputs.size());

paddle/pybind/pybind.cc

@@ -12,7 +12,8 @@ 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. */
 
-#include "paddle/pybind/pybind.h"
+#include "paddle/pybind/protobuf.h"
+
 #include "paddle/framework/backward.h"
 #include "paddle/framework/executor.h"
 #include "paddle/framework/feed_fetch_method.h"
@@ -25,7 +26,7 @@ limitations under the License. */
 #include "paddle/platform/enforce.h"
 #include "paddle/platform/place.h"
 #include "paddle/pybind/exception.h"
-#include "paddle/pybind/protobuf.h"
+#include "paddle/pybind/pybind.h"
 #include "paddle/pybind/tensor_py.h"
 #include "paddle/string/to_string.h"