Sentinel objects

PyTypeObject PySentinel_Type

This instance of PyTypeObject represents the Python sentinel type. This is the same object as sentinel.

Added in version 3.15.

int PySentinel_Check(PyObject *o)

Return true if o is a sentinel object or a subtype. The sentinel type does not currently allow subclasses, so this check is exact. Future Python versions may choose to allow subtyping. This function always succeeds.

Added in version 3.15.

int PySentinel_CheckExact(PyObject *o)

Return true if o is a sentinel object, but not a subtype. The sentinel type does not currently allow subclasses. Future Python versions may choose to allow subtyping. This function always succeeds.

Added in version 3.15.

PyObject *PySentinel_New(const char *name, const char *module_name)

Return value: New reference.

Return a new sentinel object with __name__ set to name and __module__ set to module_name. name must not be NULL. If module_name is NULL, __module__ is set to None. Return NULL with an exception set on failure.

For pickling to work, module_name must be the name of an importable module, and the sentinel must be accessible from that module under a path matching name. Pickle treats name as a global variable name in module_name (see object.__reduce__()).

Added in version 3.15.