/* Tuple object interface */ #ifndef Py_TUPLEOBJECT_H#define Py_TUPLEOBJECT_H#ifdef __cplusplusextern "C" {#endif /*Another generally useful object type is a tuple of object pointers.For Python, this is an immutable type.  C code can change the tuple items(but not their number), and even use tuples are general-purpose arrays ofobject references, but in general only brand new tuples should be mutated,not ones that might already have been exposed to Python code. *** WARNING *** PyTuple_SetItem does not increment the new item's referencecount, but does decrement the reference count of the item it replaces,if not nil.  It does *decrement* the reference count if it is *not*inserted in the tuple.  Similarly, PyTuple_GetItem does not increment thereturned item's reference count.*/ typedef struct {    PyObject_VAR_HEAD    PyObject *ob_item[1];     /* ob_item contains space for 'ob_size' elements.     * Items must normally not be NULL, except during construction when     * the tuple is not yet visible outside the function that builds it.     */} PyTupleObject; PyAPI_DATA(PyTypeObject) PyTuple_Type; #define PyTuple_Check(op) PyObject_TypeCheck(op, &PyTuple_Type)#define PyTuple_CheckExact(op) ((op)->ob_type == &PyTuple_Type) PyAPI_FUNC(PyObject *) PyTuple_New(Py_ssize_t size);PyAPI_FUNC(Py_ssize_t) PyTuple_Size(PyObject *);PyAPI_FUNC(PyObject *) PyTuple_GetItem(PyObject *, Py_ssize_t);PyAPI_FUNC(int) PyTuple_SetItem(PyObject *, Py_ssize_t, PyObject *);PyAPI_FUNC(PyObject *) PyTuple_GetSlice(PyObject *, Py_ssize_t, Py_ssize_t);PyAPI_FUNC(int) _PyTuple_Resize(PyObject **, Py_ssize_t);PyAPI_FUNC(PyObject *) PyTuple_Pack(Py_ssize_t, ...); /* Macro, trading safety for speed */#define PyTuple_GET_ITEM(op, i) (((PyTupleObject *)(op))->ob_item[i])#define PyTuple_GET_SIZE(op)    (((PyTupleObject *)(op))->ob_size) /* Macro, *only* to be used to fill in brand new tuples */#define PyTuple_SET_ITEM(op, i, v) (((PyTupleObject *)(op))->ob_item[i] = v) #ifdef __cplusplus}#endif#endif /* !Py_TUPLEOBJECT_H */