how to init parent's init methods in son class?

[clearlovel7]

cpp code is this:

1. class PSIParams {

2. public:
   

3.     class SEALParams : public seal::EncryptionParameters {
   

4.     public:
   

5.         SEALParams() : seal::EncryptionParameters(seal::scheme_type::bfv)
   

6.         {}
   

7.     };
   

9.     constexpr static std::uint32_t item_bit_count_min = 80;
   

11.     constexpr static std::uint32_t item_bit_count_max = 128;
    

12.     ........
    

13. }

I want express line5. how did I write my pybind in line11 init?

1. PYBIND11_MODULE(apsi, m) {

2. m.doc() = "APSI"; // optional module docstring
   

4. py::class_<PSIParams> psiparams(m,"PSIParams");
   

5.     psiparams.def(py::init<>());
   

6.     .def_readonly_static("item_bit_count_min", &PSIParams::item_bit_count_min)
   

7.     .def_readonly_static("item_bit_count_max", &PSIParams::item_bit_count_max)
   

10. py::class_<PSIParams::SEALParams,seal::EncryptionParameters> sealparams(psiparams, "SEALParams");
    

11.     sealparams.def(py::init<>());
    

12. }