<p>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?</p>

<p>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.</p>

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);
```
```