Function call_once_py_init

src/python/python_runtime.cpp:634–636

Initialization guards

    // Initialization guards
    void call_once_py_init(std::function<void()> fn) {
        std::call_once(g_py_init_once, std::move(fn));
    }

    void call_once_redirect(std::function<void()> fn) {
        std::call_once(g_redirect_once, std::move(fn));