Question

I have some global variables in a Python script. Some functions in that script call into C – is it possible to set one of those variables while in C and if so, how?

I appreciate that this isn’t a very nice design in the first place, but I need to make a small change to existing code, I don’t want to embark on major refactoring of existing scripts.

Answer 1

I’m not a python guru, but I found this question interesting so I googled around. This was the first hit on ‘python embedding API’ – does it help?

If the attributes belong to the global scope of a module, then you can use ‘PyImport_AddModule’ to get a handle to the module object. For example, if you wanted to get the value of an integer in the main module named ‘foobar’, you would do the following:

PyObject *m = PyImport_AddModule('__main__'); PyObject *v = PyObject_GetAttrString(m,'foobar');  int foobar = PyInt_AsLong(v);  Py_DECREF(v);