How to catch a python custom exception in cpp?

[HugoMVale]

I read the doc Handling exceptions from Python in C++, but I still don't understand how to catch a custom python exception in C++.

Currently, I am using the following workaround. What is the proper way of doing it?

Thank you very much.

# python

class MyPythonException(Exception):
    pass

// cpp

try{
// ...
} catch (const py::error_already_set &e) {
    std::string ewhat = e.what();
    if (ewhat.find("MyPythonException") != std::string::npos) {
        std::cout << e.value() << std::endl;
        // ...
    } else {
        throw;
    }
}