Wrap a function that takes class, and then get class typeid?

[UnidayStudio]

Hi! I'm the dev behind Cave Engine and we use pybind11 for scripting in it (thank y'all a lot for this lib!)

I'm facing an interesting design decision regarding its python API. In C++, my entities have an useful templated method to retrieve a given component:

// ...
template <typename T>
Component* Get() {
    // Returns nullptr or the component T, if found...
}
// ...

I know it's not possible to wrap a templated class like that into pybind11, so we've been using our engine rtti to allow a similar method:

// ...
Component* Get(const std::string& className) {
    // Returns nullptr or the component named className (thanks to our rtti this is possible), if found...
}
// ...

This way, we can do that in our scripts:

rigidBody = entity.get("RigidBodyComponent")

But as good as our rtti implementation is, string operations are getting quite expensive, so we are looking for an alternative. The ideal API for us would be something like that:

rigidBody = entity.get(cave.RigidBodyComponent) # Pass the actual class, that is wrapped into our module

But for that, I'll need to be able to create a C++ function that takes that (I believe it's a py::object and retrieves its original class typeid's hash_code or something like that. But I'm struggling a bit to do this. Is it possible? If so, how can it be done?

---

Minimal Reproducible Case

If you want a simple test case to better exemplify what I'm trying to do, here it is:

// Simple test case:
class MyClass {};

bool myTestFunction(const py::object& classType){
    const size_t originalCppClassId = typeid(MyClass).hash_code();
    
    // WHAT I WANT:
    // Get the same value as the one stored at "originalCppClassId", but only using "classType"!
    size_t classIdFromClassType = /*TODO*/;
    return classIdFromClassType == originalCppClassId;
}

PYBIND11_MODULE(my_module, m) {
    py::class_<MyClass>(m, "MyClass");
    m.def("myTestFunction", &myTestFunction);
}

Then in python:

import my_module
res = my_module.myTestFunction(my_module.MyClass)

Thanks!