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Overview

Sets are unordered collections of unique hashable objects.

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Creating Sets

PyObject* PySet_New(PyObject *iterable)
PyObject* PyFrozenSet_New(PyObject *iterable)
Example: 
PyObject *set = PySet_New(NULL);  // Empty set
return set;

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Set Operations

int PySet_Add(PyObject *set, PyObject *key)
int PySet_Discard(PyObject *set, PyObject *key)
int PySet_Contains(PyObject *anyset, PyObject *key)
Py_ssize_t PySet_Size(PyObject *anyset)
Example: 
PyObject *item = PyLong_FromLong(42);
PySet_Add(set, item);
Py_DECREF(item);

if (PySet_Contains(set, item)) {
    printf("Set contains 42\n");
}

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Set Methods

PyObject* PySet_Pop(PyObject *set)
void PySet_Clear(PyObject *set)

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See Also

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