Python API Modeler.read() method fails to check if a file can't be read

[ktbolt]

The Python API Modeler.read() method uses the following code to read in a VTP file

  if (model->ReadNative(fileName) != SV_OK) {
      delete model;
      api.error("Error reading a solid model from the file '" + std::string(fileName) + "'.");
      return nullptr;
  }

The SimVascular ReadNative function however does not check to see if the file can be read, just returns SV_OK and an empty vtkPolyData() object.

I will add a check in the Modeler.read() method if a file can be opened.