Create an object using Python's C API

Question

Say I have my object layout defined as:

typedef struct {     PyObject_HEAD     // Other stuff... } pyfoo; 

...and my type definition:

static PyTypeObject pyfoo_T = {     PyObject_HEAD_INIT(NULL)     // ...      pyfoo_new, }; 

How do I create a new instance of pyfoo somewhere within my C extension?

Answer 1

Call PyObject_New(), followed by PyObject_Init().

EDIT: The best way is to call the class object, just like in Python itself:

/* Pass two arguments, a string and an int. */ PyObject *argList = Py_BuildValue("si", "hello", 42);  /* Call the class object. */ PyObject *obj = PyObject_CallObject((PyObject *) &pyfoo_T, argList);  /* Release the argument list. */ Py_DECREF(argList);