Objetos sentinel
****************

PyTypeObject PySentinel_Type

   Esta instância do "PyTypeObject" representa o tipo "sentinel" do
   Python. Este é o mesmo objeto que "sentinel".

   Adicionado na versão 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.

   Adicionado na versão 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.

   Adicionado na versão 3.15.

PyObject *PySentinel_New(const char *name, const char *module_name)
    *Retorna valor: Nova referência.*

   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__()").

   Adicionado na versão 3.15.
