Maybe I am just a noob but I seem to hit the same wall regardless of the approach. The problem is that pickling functions creates all sorts of ambiguities as for namespaces and once you unpickle them the i terpreter kinda doesn’t know what to do with them. So now I am going for a mew approach in which I use pyarmor to obfuscate the functions I am using. Maybe going to look for a way to encrypt it in such a way to restrict their use