Set Objects

New in version 2.5.

This section details the public API for set and frozenset objects. Any functionality not listed below is best accessed using the either the abstract object protocol (including :cfunc:`PyObject_CallMethod`, :cfunc:`PyObject_RichCompareBool`, :cfunc:`PyObject_Hash`, :cfunc:`PyObject_Repr`, :cfunc:`PyObject_IsTrue`, :cfunc:`PyObject_Print`, and :cfunc:`PyObject_GetIter`) or the abstract number protocol (including :cfunc:`PyNumber_And`, :cfunc:`PyNumber_Subtract`, :cfunc:`PyNumber_Or`, :cfunc:`PyNumber_Xor`, :cfunc:`PyNumber_InPlaceAnd`, :cfunc:`PyNumber_InPlaceSubtract`, :cfunc:`PyNumber_InPlaceOr`, and :cfunc:`PyNumber_InPlaceXor`).

The following type check macros work on pointers to any Python object. Likewise, the constructor functions work with any iterable Python object.

The following functions and macros are available for instances of set or frozenset or instances of their subtypes.

The following functions are available for instances of set or its subtypes but not for instances of frozenset or its subtypes.