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-rw-r--r--Doc/c-api/set.rst7
1 files changed, 7 insertions, 0 deletions
diff --git a/Doc/c-api/set.rst b/Doc/c-api/set.rst
index 0aa6bcecda..c6b097dae4 100644
--- a/Doc/c-api/set.rst
+++ b/Doc/c-api/set.rst
@@ -58,6 +58,13 @@ the constructor functions work with any iterable Python object.
.. versionadded:: 2.6
+.. cfunction:: int PyFrozenSet_Check(PyObject *p)
+
+ Return true if *p* is a :class:`frozenset` object or an instance of a
+ subtype.
+
+ .. versionadded:: 2.6
+
.. cfunction:: int PyAnySet_Check(PyObject *p)
Return true if *p* is a :class:`set` object, a :class:`frozenset` object, or an