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/* Set object interface */
#ifndef Py_SETOBJECT_H
#define Py_SETOBJECT_H
#ifdef __cplusplus
extern "C" {
#endif
/*
This data structure is shared by set and frozenset objects.
*/
typedef struct {
PyObject_HEAD
PyObject *data;
long hash; /* only used by frozenset objects */
PyObject *weakreflist; /* List of weak references */
/* Invariants:
* data is a dictionary whose values are all True.
* data points to the same dict for the whole life of the set.
* For frozensets only:
* data is immutable.
* hash is the hash of the frozenset or -1 if not computed yet.
*/
} PySetObject;
PyAPI_DATA(PyTypeObject) PySet_Type;
PyAPI_DATA(PyTypeObject) PyFrozenSet_Type;
#define PyFrozenSet_CheckExact(ob) ((ob)->ob_type == &PyFrozenSet_Type)
#define PyAnySet_Check(ob) \
((ob)->ob_type == &PySet_Type || (ob)->ob_type == &PyFrozenSet_Type || \
PyType_IsSubtype((ob)->ob_type, &PySet_Type) || \
PyType_IsSubtype((ob)->ob_type, &PyFrozenSet_Type))
#ifdef __cplusplus
}
#endif
#endif /* !Py_SETOBJECT_H */
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