类型对象 ¶

PyTypeObject ¶

The C structure of the objects used to describe built-in types.

PyObject * PyType_Type ¶

This is the type object for type objects; it is the same object as type and types.TypeType 在 Python 层。

int PyType_Check ( PyObject *o ) ¶

Return true if the object o is a type object, including instances of types derived from the standard type object. Return false in all other cases.

int PyType_CheckExact ( PyObject *o ) ¶

Return true if the object o is a type object, but not a subtype of the standard type object. Return false in all other cases.

2.2 版新增。

无符号 int PyType_ClearCache ( ) ¶

Clear the internal lookup cache. Return the current version tag.

2.6 版新增。

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 版新增。

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.

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 版新增。

int PyType_IsSubtype ( PyTypeObject *a , PyTypeObject *b ) ¶

返回 True 若 a is a subtype of b .

2.2 版新增。

This function only checks for actual subtypes, which means that __subclasscheck__() is not called on b 。调用 PyObject_IsSubclass() to do the same check that issubclass() would do.

PyObject * PyType_GenericAlloc ( PyTypeObject *type , Py_ssize_t nitems ) ¶

返回值：新引用。

2.2 版新增。

Changed in version 2.5: This function used an int type for nitems . This might require changes in your code for properly supporting 64-bit systems.

PyObject * PyType_GenericNew ( PyTypeObject *type , PyObject *args , PyObject *kwds ) ¶

返回值：新引用。

2.2 版新增。

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 版新增。

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