Changing C variables from python?

Question

I have an embedded python interpreter in my program. I'd like to export a module with values defined in my program and be able to change them from a python script. e.g. in c: int x = 1;

in python: import embedded embedded.x = 2 in c: printf("%d",x); output: 2

Is this possible or do I have to export functions to change anything in c?

Answer 1

There's no need to export functions, but the easiest way to do this would be to use PyModule_GetDict() with PyDict_GetItemString() to get the value assigned to the x attribute.

Answer 2

If you don't want to actively check the value of a PyObject in your C code, I think you need to export functions to modify the representation in C. I'm no expert, but I don't think there's an automatic mapping.