Method PythonEngine

src/EnergyPlus/PythonEngine.cc:319–349

    }

    PythonEngine::PythonEngine(EnergyPlusData &state) : eplusRunningViaPythonAPI(state.dataPluginManager->eplusRunningViaPythonAPI)
    {
        // we'll need the program directory for a few things so get it once here at the top and sanitize it
        fs::path programDir;
        if (state.dataGlobal->installRootOverride) {
            programDir = state.dataStrGlobals->exeDirectoryPath;
        } else {
            programDir = FileSystem::getParentDirectoryPath(FileSystem::getAbsolutePath(FileSystem::getProgramPath()));
        }
        fs::path const pathToPythonPackages = programDir / "python_lib";

        initPython(state, pathToPythonPackages);

        // we also need to set an extra import path to find some dynamic library loading stuff, again make it relative to the binary
        addToPythonPath(state, programDir / "python_lib/lib-dynload", false);

        // now for additional paths:
        // we'll always want to add the program executable directory to PATH so that Python can find the installed pyenergyplus package
        // we will then optionally add the current working directory to allow Python to find scripts in the current directory
        // we will then optionally add the directory of the running IDF to allow Python to find scripts kept next to the IDF
        // we will then optionally add any additional paths the user specifies on the search paths object

        // so add the executable directory here
        addToPythonPath(state, programDir, false);

        PyObject *m = PyImport_AddModule("__main__");
        if (m == nullptr) {
            throw std::runtime_error("Unable to add module __main__ for python script execution");
        }
        m_globalDict = PyModule_GetDict(m);
    }

    void PythonEngine::exec(std::string_view sv)
    {