Descriptor（描述器）物件

"Descriptor" 是描述物件某些屬性的物件，它們存在於型別物件的 dictionary（字典）中。

PyTypeObject PyProperty_Type

為 穩定 ABI 的一部分.

內建 descriptor 型別的型別物件。

PyObject *PyDescr_NewGetSet(PyTypeObject *type, struct PyGetSetDef *getset)

回傳值：新的參照。 為 穩定 ABI 的一部分.

Create a new get-set descriptor for extension type type from the PyGetSetDef structure getset.

Get-set descriptors expose attributes implemented by C getter and setter functions rather than stored directly in the instance. This is the same kind of descriptor created for entries in tp_getset, and it appears in Python as a types.GetSetDescriptorType object.

On success, return a strong reference to the descriptor. Return NULL with an exception set on failure.

PyObject *PyDescr_NewMember(PyTypeObject *type, struct PyMemberDef *member)

回傳值：新的參照。 為 穩定 ABI 的一部分.

Create a new member descriptor for extension type type from the PyMemberDef structure member.

Member descriptors expose fields in the type's C struct as Python attributes. This is the same kind of descriptor created for entries in tp_members, and it appears in Python as a types.MemberDescriptorType object.

On success, return a strong reference to the descriptor. Return NULL with an exception set on failure.

PyTypeObject PyMemberDescr_Type

為 穩定 ABI 的一部分.

The type object for member descriptor objects created from PyMemberDef structures. These descriptors expose fields of a C struct as attributes on a type, and correspond to types.MemberDescriptorType objects in Python.

PyTypeObject PyGetSetDescr_Type

為 穩定 ABI 的一部分.

The type object for get/set descriptor objects created from PyGetSetDef structures. These descriptors implement attributes whose value is computed by C getter and setter functions, and are used for many built-in type attributes. They correspond to types.GetSetDescriptorType objects in Python.

PyObject *PyDescr_NewMethod(PyTypeObject *type, struct PyMethodDef *meth)

回傳值：新的參照。 為 穩定 ABI 的一部分.

Create a new method descriptor for extension type type from the PyMethodDef structure meth.

Method descriptors expose C functions as methods on a type. This is the same kind of descriptor created for entries in tp_methods, and it appears in Python as a types.MethodDescriptorType object.

On success, return a strong reference to the descriptor. Return NULL with an exception set on failure.

PyTypeObject PyMethodDescr_Type

為 穩定 ABI 的一部分.

The type object for method descriptor objects created from PyMethodDef structures. These descriptors expose C functions as methods on a type, and correspond to types.MethodDescriptorType objects in Python.

PyTypeObject PyWrapperDescr_Type

為 穩定 ABI 的一部分.

The type object for wrapper descriptor objects created by PyDescr_NewWrapper() and PyWrapper_New().

Wrapper descriptors are used internally to expose special methods such as __repr__ or __add__, which are implemented by type slots. The type is exposed in Python as types.WrapperDescriptorType.

PyObject *PyDescr_NewWrapper(PyTypeObject *type, struct wrapperbase *base, void *wrapped)

回傳值：新的參照。

Create a new wrapper descriptor of type PyWrapperDescr_Type.

This function is meant for internal use only; it and related API (struct wrapperbase and the PyWrapperFlag_KEYWORDS flag) are exposed publicly for backwards compatibility reasons.

See PyCMethod_New() for wrapping a C function.

PyObject *PyDescr_NewClassMethod(PyTypeObject *type, PyMethodDef *method)

回傳值：新的參照。 為 穩定 ABI 的一部分.

Create a new class method descriptor for extension type type from the PyMethodDef structure method.

Class method descriptors expose C methods that receive the class rather than an instance when accessed. This is the same kind of descriptor created for METH_CLASS entries in tp_methods, and it appears in Python as a types.ClassMethodDescriptorType object.

On success, return a strong reference to the descriptor. Return NULL with an exception set on failure.

int PyDescr_IsData(PyObject *descr)

如果 descriptor 物件 descr 描述的是一個資料屬性則回傳非零值，或者如果它描述的是一個方法則回傳 0。descr 必須為一個 descriptor 物件；沒有錯誤檢查。

PyObject *PyWrapper_New(PyObject *d, PyObject *self)

回傳值：新的參照。 為 穩定 ABI 的一部分.

Create a new bound wrapper object from the wrapper descriptor d and the instance self.

This is the bound form of a wrapper descriptor created by PyDescr_NewWrapper(). CPython creates these objects when a slot wrapper is accessed through an instance, and they appear in Python as types.MethodWrapperType objects.

On success, return a strong reference to the wrapper object. Return NULL with an exception set on failure.

PyDescr_TYPE(descr)

Return a borrowed reference to the type that the descriptor descr belongs to. This is accessible as __objclass__ in Python.

descr must be a descriptor object created by one of the PyDescr_New* functions (an instance of PyMethodDescr_Type, PyClassMethodDescr_Type, PyMemberDescr_Type, PyGetSetDescr_Type, or PyWrapperDescr_Type). If the passed descriptor is not an instance of one of these types, the behavior is undefined.

PyDescr_NAME(descr)

Return the name of the descriptor descr as a borrowed reference to a str object. This is available as __name__ in Python.

descr must be a descriptor object created by one of the PyDescr_New* functions. If not, the behavior is undefined.

內建描述器

PyTypeObject PySuper_Type

為 穩定 ABI 的一部分.

The type object for super objects. This is the same object as super in the Python layer.

PyTypeObject PyClassMethod_Type

The type of class method objects. This is the same object as classmethod in the Python layer.

PyTypeObject PyClassMethodDescr_Type

為 穩定 ABI 的一部分.

The type object for C-level class method descriptor objects. This is the type of the descriptors created for classmethod() defined in C extension types, and corresponds to types.ClassMethodDescriptorType objects in Python.

PyObject *PyClassMethod_New(PyObject *callable)

Create a new classmethod object wrapping callable. callable must be a callable object and must not be NULL.

On success, this function returns a strong reference to a new class method descriptor. On failure, this function returns NULL with an exception set.

PyTypeObject PyStaticMethod_Type

The type of static method objects. This is the same object as staticmethod in the Python layer.

PyObject *PyStaticMethod_New(PyObject *callable)

Create a new staticmethod object wrapping callable. callable must be a callable object and must not be NULL.

On success, this function returns a strong reference to a new static method descriptor. On failure, this function returns NULL with an exception set.