[PyBind] Remove env variable and use Py_IsInitialized() function.

include/aidge/utils/Registrar.hpp

@@ -35,7 +35,7 @@ public:
     {
         #ifdef PYBIND
         #define _CRT_SECURE_NO_WARNINGS
-        if (std::getenv("AIDGE_CORE_WITH_PYBIND")){
+        if (Py_IsInitialized()){
             std::string name = std::string("registrar_")+typeid(Registrable<DerivedClass, Key, Func>).name();
             static auto shared_data = reinterpret_cast<std::map<Key, std::function<Func>> *>(py::get_shared_data(name));
             if (!shared_data)
@@ -73,4 +73,4 @@ struct Registrar {
 };
 }
 
-#endif //AIDGE_CORE_UTILS_REGISTRAR_H_
+#endif //AIDGE_CORE_UTILS_REGISTRAR_H_
\ No newline at end of file

python_binding/pybind_core.cpp

@@ -48,14 +48,8 @@ void init_Recipies(py::module&);
 void init_Scheduler(py::module&);
 void init_TensorUtils(py::module&);
 
-void set_python_flag(){
-    // Set an env variable to know if we run with ypthon or cpp
-    py::module os_module = py::module::import("os");
-    os_module.attr("environ")["AIDGE_CORE_WITH_PYBIND"] = "1";
-}
 
 void init_Aidge(py::module& m){
-    set_python_flag();
     init_Data(m);
     init_Tensor(m);