Getting python attribute into the C space

[belangeo]

From Chris Csikszentmihalyi mail:

Here's an example of getting an object's value from python into the C space:

138 INLINE int pyo_get_python_int(PyThreadState *interp) {                         
139     PyObject *module, *obj;                                                    
140     PyEval_AcquireThread(interp);                                              
141     module = PyImport_AddModule("main");                                                                                 
142     obj = PyObject_GetAttrString(module, "freq");                              
143     PyEval_ReleaseThread(interp);                                              
144                                                                                
145     long foobar = PyInt_AsLong(obj);                                           
146     return (int) foobar;                                                       
147 }                                    
This seems to work well and causes no mode switches.