列表对象¶

PyListObject¶: 这个C类型 PyObject 的子类型代表一个Python列表对象。

PyTypeObject PyList_Type¶: 这是个属于 PyTypeObject 的代表Python列表类型的实例。在Python层面和类型 list 是同一个对象。

int PyList_Check(PyObject *p)¶: 如果 p 是一个列表对象或者是一个列表类型的子类型实例时，返回真。

int PyList_CheckExact(PyObject *p)¶: 当 p 是一个列表对象，但是不是列表类型的子类型实例时，返回真。

PyObject* PyList_New(Py_ssize_t len)¶: Return value: New reference.
成功时返回长度为 len 的新列表，失败时返回 NULL。

注解

当 len 大于零时，被返回的列表对象项目被设成 NULL。因此你不能用类似C函数 PySequence_SetItem() 的抽象API或者用C函数 PyList_SetItem() 将所有项目设置成真实对象前对Python代码公开这个对象。

Py_ssize_t PyList_Size(PyObject *list)¶: 返回 list 中列表对象的长度；这等于在列表对象调用 len(list) 。

Py_ssize_t PyList_GET_SIZE(PyObject *list)¶: 宏版本的C函数 PyList_Size() ，没有错误检测。

PyObject* PyList_GetItem(PyObject *list, Py_ssize_t index)¶: Return value: Borrowed reference.
返回 list 指向的列表中位置 index 的对象。这个位置必需是正数，不支持倒叙索引。如果 index 超出边界，返回 NULL 并设置 IndexError 异常。

PyObject* PyList_GET_ITEM(PyObject *list, Py_ssize_t i)¶: Return value: Borrowed reference.
宏版本的C函数 PyList_GetItem() ，没有错误检测。

int PyList_SetItem(PyObject *list, Py_ssize_t index, PyObject *item)¶: 将列表中索引为 index 的对象设为 item。成功时返回 0 ，失败时返回 -1 。

注解

This function “steals” a reference to item and discards a reference to an item already in the list at the affected position.

void PyList_SET_ITEM(PyObject *list, Py_ssize_t i, PyObject *o)¶: Macro form of PyList_SetItem() without error checking. This is normally only used to fill in new lists where there is no previous content.

注解

This macro “steals” a reference to item, and, unlike PyList_SetItem(), does not discard a reference to any item that is being replaced; any reference in list at position i will be leaked.

int PyList_Insert(PyObject *list, Py_ssize_t index, PyObject *item)¶: Insert the item item into list list in front of index index. Return 0 if successful; return -1 and set an exception if unsuccessful. Analogous to list.insert(index, item).

int PyList_Append(PyObject *list, PyObject *item)¶: Append the object item at the end of list list. Return 0 if successful; return -1 and set an exception if unsuccessful. Analogous to list.append(item).

PyObject* PyList_GetSlice(PyObject *list, Py_ssize_t low, Py_ssize_t high)¶: Return value: New reference.
Return a list of the objects in list containing the objects between low and high. Return NULL and set an exception if unsuccessful. Analogous to list[low:high]. Negative indices, as when slicing from Python, are not supported.

int PyList_SetSlice(PyObject *list, Py_ssize_t low, Py_ssize_t high, PyObject *itemlist)¶: Set the slice of list between low and high to the contents of itemlist. Analogous to list[low:high] = itemlist. The itemlist may be NULL, indicating the assignment of an empty list (slice deletion). Return 0 on success, -1 on failure. Negative indices, as when slicing from Python, are not supported.

int PyList_Sort(PyObject *list)¶: Sort the items of list in place. Return 0 on success, -1 on failure. This is equivalent to list.sort().

int PyList_Reverse(PyObject *list)¶: Reverse the items of list in place. Return 0 on success, -1 on failure. This is the equivalent of list.reverse().

PyObject* PyList_AsTuple(PyObject *list)¶: Return value: New reference.
Return a new tuple object containing the contents of list; equivalent to tuple(list).

int PyList_ClearFreeList()¶: Clear the free list. Return the total number of freed items.

3.3 新版功能.