C:\build\3_4_winpack-build-win64-vc14\build\modules\python_bindings_generator\pyopencv_generated_modules_content.h(1955): error C2039: 'DNN_BACKEND_INFERENCE_ENGINE_NGRAPH': is not a member of 'cv::dnn' [C:\build\3_4_winpack-build-win64-vc14\build\python_35\opencv_python.vcxproj]
  C:\build\3_4_winpack-build-win64-vc14\opencv\modules\dnn\include\opencv2/dnn/utils/inference_engine.hpp(13): note: see declaration of 'cv::dnn'
C:\build\3_4_winpack-build-win64-vc14\build\modules\python_bindings_generator\pyopencv_generated_modules_content.h(1955): error C2065: 'DNN_BACKEND_INFERENCE_ENGINE_NGRAPH': undeclared identifier [C:\build\3_4_winpack-build-win64-vc14\build\python_35\opencv_python.vcxproj]
C:\build\3_4_winpack-build-win64-vc14\build\modules\python_bindings_generator\pyopencv_generated_modules_content.h(1956): error C2039: 'DNN_BACKEND_INFERENCE_ENGINE_NN_BUILDER_2019': is not a member of 'cv::dnn' [C:\build\3_4_winpack-build-win64-vc14\build\python_35\opencv_python.vcxproj]
  C:\build\3_4_winpack-build-win64-vc14\opencv\modules\dnn\include\opencv2/dnn/utils/inference_engine.hpp(13): note: see declaration of 'cv::dnn'
C:\build\3_4_winpack-build-win64-vc14\build\modules\python_bindings_generator\pyopencv_generated_modules_content.h(1956): error C2065: 'DNN_BACKEND_INFERENCE_ENGINE_NN_BUILDER_2019': undeclared identifier [C:\build\3_4_winpack-build-win64-vc14\build\python_35\opencv_python.vcxproj]