类型对象¶
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PyTypeObject
¶ 对象的 C 结构用于描述 built-in 类型。
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PyObject*
PyType_Type
¶ This is the type object for type objects; it is the same object as
type
andtypes.TypeType
in the Python layer.
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unsigned int
PyType_ClearCache
()¶ Clear the internal lookup cache. Return the current version tag.
2.6 新版功能.
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void
PyType_Modified
(PyTypeObject *type)¶ Invalidate the internal lookup cache for the type and all of its subtypes. This function must be called after any manual modification of the attributes or base classes of the type.
2.6 新版功能.
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int
PyType_HasFeature
(PyObject *o, int feature)¶ Return true if the type object o sets the feature feature. Type features are denoted by single bit flags.
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int
PyType_IS_GC
(PyObject *o)¶ Return true if the type object includes support for the cycle detector; this tests the type flag
Py_TPFLAGS_HAVE_GC
.2.0 新版功能.
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int
PyType_IsSubtype
(PyTypeObject *a, PyTypeObject *b)¶ Return true if a is a subtype of b.
2.2 新版功能.
This function only checks for actual subtypes, which means that
__subclasscheck__()
is not called on b. CallPyObject_IsSubclass()
to do the same check thatissubclass()
would do.
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PyObject*
PyType_GenericAlloc
(PyTypeObject *type, Py_ssize_t nitems)¶ - Return value: New reference.
2.2 新版功能.
在 2.5 版更改: This function used an
int
type for nitems. This might require changes in your code for properly supporting 64-bit systems.
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PyObject*
PyType_GenericNew
(PyTypeObject *type, PyObject *args, PyObject *kwds)¶ - Return value: New reference.
2.2 新版功能.
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int
PyType_Ready
(PyTypeObject *type)¶ Finalize a type object. This should be called on all type objects to finish their initialization. This function is responsible for adding inherited slots from a type’s base class. Return
0
on success, or return-1
and sets an exception on error.2.2 新版功能.