Consider a Callback class in Python.

class My_Callback():
    def __init__(self):
        pass
    
    def do_something(self, something):
        print(something)

This Class is used in a DLL wrapper which is using pybind11 to expose it to python. A reference to the Class is stored in an ENUM and passed to a C++ function.

void callPy(py::object f) {
    //call f.do_something("test");
}
// ...
callPy(userData::myCallback);

There are many examples on how to call Python functions from C++ (pybind11 doc), but what is the intended way to call class methods? It feels like I should cast the py::object to a My_Callback, but I don’t see how to do it.

The following lines seems to do the job, but is this really the intended way to do it?

void callPy(py::object f) {
    py::object mycallback = f.attr("do_something");
    mycallback("test");
}