函式（Function）物件
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這有一些少數Python函數的於具體說明。

PyFunctionObject

   The C structure used for functions.

PyTypeObject PyFunction_Type

   This is an instance of "PyTypeObject" and represents the Python
   function type.  It is exposed to Python programmers as
   "types.FunctionType".

int PyFunction_Check(PyObject *o)

   Return true if *o* is a function object (has type
   "PyFunction_Type"). The parameter must not be *NULL*.

PyObject* PyFunction_New(PyObject *code, PyObject *globals)
    *Return value: New reference.*

   Return a new function object associated with the code object
   *code*. *globals* must be a dictionary with the global variables
   accessible to the function.

   The function’s docstring, name and *__module__* are retrieved from
   the code object, the argument defaults and closure are set to
   *NULL*.

PyObject* PyFunction_GetCode(PyObject *op)
    *Return value: Borrowed reference.*

   回傳與程式碼物件相關的函數物件 *op*。

PyObject* PyFunction_GetGlobals(PyObject *op)
    *Return value: Borrowed reference.*

   回傳與全域函數字典相關的函數物件 *op*。

PyObject* PyFunction_GetModule(PyObject *op)
    *Return value: Borrowed reference.*

   Return the *__module__* attribute of the function object *op*. This
   is normally a string containing the module name, but can be set to
   any other object by Python code.

PyObject* PyFunction_GetDefaults(PyObject *op)
    *Return value: Borrowed reference.*

   Return the argument default values of the function object *op*.
   This can be a tuple of arguments or *NULL*.

int PyFunction_SetDefaults(PyObject *op, PyObject *defaults)

   Set the argument default values for the function object *op*.
   *defaults* must be *Py_None* or a tuple.

   Raises "SystemError" and returns "-1" on failure.

PyObject* PyFunction_GetClosure(PyObject *op)
    *Return value: Borrowed reference.*

   Return the closure associated with the function object *op*. This
   can be *NULL* or a tuple of cell objects.

int PyFunction_SetClosure(PyObject *op, PyObject *closure)

   Set the closure associated with the function object *op*. *closure*
   must be *Py_None* or a tuple of cell objects.

   Raises "SystemError" and returns "-1" on failure.
