Getting a class' function using the Python C API

Question

I'm trying to import the ftp module of Python to a C++ application using the Python C API, but I'm having trouble getting a reference to the FTP.nlst function. (Or any function of the FTP class for that matter.)

My current code snippet looks like this:

Py_Initialize();

PyObject* module = PyImport_ImportModule("ftplib");
PyObject* dict = PyModule_GetDict(module);
PyObject* function = PyDict_GetItemString(dict, "FTP.nlst");

The lines coming after this don't really matter as function is a NULL pointer no matter what I try, so this will always be UB.

Trying something arbitrary, like importing the math module and assigning function to be the fabs function works on the other hand.

Any help is appreciated!